magic-gigapans

Public Images

• Sediment from Montara State Park, California
• Curwensville Reservoir
• Diptera tipulidae 846b
• Basalt Columns at Skinner Butte, Eugene, OR
• Allegheny Formation sandstone, plane polars
• K/T boundary. Gubbio, Italy #4
• Archean gneiss, Gallatin Range, Montana
• Pipe Rock, North-West Highlands, Scotland
• Giant's Causeway, Northern Ireland
• Arkose, Crossed Polars
• Mauch Chunk Formation, Corridor H, West Virginia
• Weverton Formation at Outdoor Lab (Biscuit Mountain)
• Martinsburg Formation, South Page Valley Road, Page County, Virginia
• View across the Barite Valley
• Sediment from Buggs Creek, Annandale, VA
• Sandstone of Hampshire Formation, Corridor H, West Virginia
• Castner Marble
• Pseudotachylyte from Asbestos Mountain, California, Crossed Polars
• CPR Tunnel Debris Flow
• Petrified wood cross section
• Portrush: hornfels (contact metamorphosed Lias shale) above Portrush gabbroic/doleritic sill
• Sand from Long Island Sound, Bronx, New York
• Holland Point, Virginia
• Ecphora gardnerae
• The Drowned Forest - Hebgen Lake, Montana
• Unconformity east of Portrush, Northern Ireland
• Chesapecten jeffersonius
• Tension gashes in Cambrian Bison Creek Formation, Jasper National Park, Alberta, Canada
• Pillow basalts, Snæfellsnes Peninsula, Iceland
• Banded iron formation, Barberton Greenstone Belt, South Africa
• Neuropteris
• Mylonite at Corrie Sands, Islay, Scotland
• Rockwell Formation diamictite, crossed polars
• Augen Gneiss, Plane Polars
• Coastal Plain fossil smorgasbord
• Dark conglomerate
• Granitoid, Robertson River Igneous Suite
• Sediment from Playa Rocosa De Piñones, Puerto Rico
• Chesapecten nefrens
• Garnet schist
• Concentric Diatom in Choptank Formation Zone 13, 4870x
• Witvlei Group stromatolites
• Son Cocó Rock Avalanche (La avalancha de rocas de Son Cocó), Alaró, Mallorca, by CarDec
• Black Cretaceous Shales - Sheep Mountain Anticline, Wyoming
• Beryl, Crossed Polars
• Sediment from Arches Provincial Park, Newfoundland and Labrador
• Sand from Muir Beach, Marin County, California
• Hampshire Formation siderite concretion, crossed polars
• Unconformity east of Portrush
• Graded bed in Martinsburg Formation turbidites, Peach Orchard Gap, Virginia
• Igneous Rocks Lab Sample I-A
• Mudchip rip-up clasts in argillite of varying oxidation states and quartzite of the Grinnell Formation
• Blastoid, top view
• The Nose - Sheep Mountain Anticline, Wyoming
• Martinsburg Formation crinoids and brachiopods
• Porphyritic Rhyolite, Crossed Polars
• Komatiite, Barberton Greenstone Belt
• El Paso Texas and Cd. Juarez Mexico
• Ostracodes in Tonoloway Formation limestone
• Conemaugh Formation Sandstone
• Chalcedony
• Root Casts in Shale, Corridor H
• Boar's Tusk and Killpecker Dunes, Wyoming
• Cirque Peak, Banff National Park, Alberta
• Echinoid hemicidaris
• Devonian Hampshire and lower Mississippian Rockwell Formations roadcut on Corridor H, West Virginia
• Rockwell Formation diamictite
• Grinnell Formation quartz sandstone and red argillite
• Contact between Tensleep Formation and Goose Egg Formation, east of Shell, Wyoming
• Cloudina
• Weekeroo 03 - Bookshelf fractures and shear bands in Walter-Outalpa Shear Zone
• Sand from Ophir Beach, Oregon
• Gravel deposits of the Salmon River, near Riggins, Idaho
• Amygdules in Catoctin Formation meta-basalt
• Slickensides on slabs of Brallier Formation shale, Paw Paw Tunnel
• Micrite
• Foram from Port Charlotte, Islay, Scotland,at 2775x
• Mauch Chunk Formation
• Giant's Causeway, Northern Ireland
• Geology Department Field Trip 2013
• Pyrite-bearing phyllite, Islay, Scotland
• Kink banding in Eldon Formation carbonates, exposed on roche moutonee east of Athabasca Glacier
• Feeder dike(s) of the Catoctin Formation, exposed at Little Devil's Stairs Overlook, Skyline Drive, Shenandoah National Park, Virginia
• Yesnaby Castle, Orkney
• Chippokes Plantation 1
• Graded bed in Martinsburg Formation
• Diptera tipulidae 936
• Tanytrachelos, from the Solite Quarry in the Dan River Basin, Virginia
• Cornwallis' Cave
• Siglufjörður, Iceland
• Walker Top mylonite
• Cross-bedding
• Tauz karst spring - the deepest underwater cave in Romania
• Tonoloway Formation, folded as part of Patterson Creek Mountain Anticline, Corridor H, West Virginia
• Blueschist
• Gneiss
• Sea stacks and sea bird nesting sites, south of West Lighthouse, Rathlin Island, Northern Ireland, U.K.
• Sheared gabbro
• Pemaquid Point, Maine
• Mechum River Formation meta-diamictite
• Facies change across the Cathedral Escarpment, Field, British Columbia, Canada
• Ulster White Limestone ("The Chalk") with belemnite fossil
• Dimmuborgir, near Lake Mývatn, Iceland
• Caliche from the Hueco Formation, West Texas
• Base of the Stac Fada Member of the Clachtoll Formation of the Stoer Group, North-West Highlands, Scotland
• Sediment from the boil at Blue Spring State Park, Orange City, Florida
• Fossil fern
• Diorite, Plane Polars
• Halite Crystals on Sand Grain, 4145x
• Porphyritic green metavolcanic rock, St. Anthony, Newfoundland
• Aragonite
• Great Unconformity, Wind River Canyon, Wyoming
• Foram from Ronasvoe, Shetland, Scotland
• Anthracite
• Spherulitic felsite, Shetland
• "Minsk Green" granite
• Tonoloway Formation Faults (Wide View), Corridor H, West Virginia
• Galena
• Sterling, Virginia-Maryland quadrangle
• Lewisian gneiss with cross-cutting dikes
• Sediment from the Moray Coast, Northeast Scotland
• Sand from Scientists' Cliffs, Chesapeake Bay, Maryland at 3530x
• Peridotite, Barberton Greenstone Belt, South Africa
• Two sets of kink bands in phyllitic metasiltstone
• Sedimentary Rocks Lab Sample P
• Oriskany/Needmore Formations
• Folded metamorphic rocks exposed on C&O Canal
• Sedimentary Structure?
• Nature baths, Mývatn, Iceland
• Ozark Cave
• Bishop Tuff
• Microbially-Induced Sedimentary Structures, Stoer Group, Clachtoll, Scotland, Crossed Polars
• Massanutten sandstone slab with trace fossils (annotated)
• Sillimanite in Sillimanite-Garnet Gneiss, Plane Polars
• Igneous intrusions in gneiss, Clear Creek Canyon, Colorado
• Pyroxenite
• Sandstone
• Closer look at the K/T Boundary. Gubbio, Italy
• Dike contact exposed at Kildonan, Arran, Scotland
• Massanutten Sandstone
• Diorite
• Stromatolites in driveway, Thunder Bay Ontario
• Siccar Point, Scotland
• Papil Water, Fetlar, Shetland
• Flathead Sandstone, Wind River Canyon, Wyoming
• Bartolome Island, Galapagos
• Leopard Rock, Beartooth Highway
• Oolitic Limestone, Plane Polars
• Metamorphic Rocks Lab Sample A
• Albite in Diorite, Crossed Polars
• Oolitic Limestone, Crossed Polars
• Fossil Acer dacycarpoides
• Fossil display at the Virginia Department of Geology and Mineral Resources
• Mineral sample D
• Cristo Rey: Buda Formation - Fossils in the quarry
• Unknown Sedimentary Rock
• Euhedral quartz, 1850x
• Folded strata of the Silurian Tonoloway Formation
• Kaap Valley Pluton, Barberton Greenstone Belt
• Halite Crystals, 3175x
• Holey Chesapecten jeffersonius
• Sediment from Acadia National Park, Maine
• Permian Reef Trail, McKittrick Canyon, Guadalupe Mountains National Park, Texas
• Anhedral Quartz, 3095x
• Derrick Quarry near Romney, WV
• Kyanite
• LiDAR view of the Harpers Ferry region, West Virginia / Maryland / Virginia
• Calcite in Precambrian-Aged Amygdaloidal Basalt, Plane Polars
• Ripple marks in mudstone
• Placopecten clintonious
• Kink banding in Laurel Formation of Rock Creek Shear Zone, Broad Branch, Washington, DC
• Sediment from Glass Beach, Ft. Bragg, California
• Dike contact exposed at Kildonan, Arran, Scotland
• Foram from St. Ninian's Tombolo, Scotland, 1915x
• Grábrókarfell cinder cone, Iceland
• Conophyton
• Cross-cutting features in a block of limestone
• Diptera tipulidae 2026
• Geopetal fossils in Limestone
• Mylonite (felsic) from the Dover Fault, Newfoundland
• Snowball Earth Educational Rock Sample Suite 22
• Chip suite, El Paso region geology
• Serpentine, Plane Polars
• Gigantoproductus giganteus productid brachiopod fossils in Permian limestone, Arran, Scotland
• Martinsburg Formation, South Page Valley Road, Page County, Virginia
• Permian Peaks - Sheep Mountain Anticline, Wyoming
• Monocline in Madison Group limestones, western Bighorn Range, Wyoming
• Snowball Earth Educational Rock Sample Suite TS-15
• Pseudotachylyte from Asbestos Mountain, CA, Plane Polars
• Kink bands in schist of the Laurel Formation, Rock Creek Shear Zone, Washington, D.C.
• Solution seam sample
• Mount Baldy (Barrier Peak), Alberta
• Rock wall at Knockan Crag, North-West Highlands, Scotland
• Ammonite
• Gravel deposits on Adams Mill Road NW, Washington, DC
• Shark Bay
• Rose quartz
• Hornblende
• Fine ooids
• WV Rt 55 Whipcove Anticline
• Glossopteris
• Sediment from Ten Mile Dunes, Ft. Bragg, California
• Foram from La Isla Verde, Puerto Rico, 3155x
• Trace fossils in the Millboro Formation, Corridor H, West Virginia
• Red cross-beds
• Rugose corals
• Giant's Causeway, Northern Ireland
• Geologic Map of the Quantico Quadrangle, Prince William and Stafford Counties, Virginia and Charles County, Maryland
• Tremolite
• Brecciated Antietam Formation
• Brown limestone
• Trezona Formation Stromatolites
• Sediment from Andros Island, Bahamas, at low tide
• Sedimentary Rocks Lab Sample T
• Ellicott City granodiorite, Ellicott City, Maryland
• Looking south from Waterton
• Canyon Diablo meteorite
• Inverted graded bedding in Dalradian metagraywackes, Lochranza, Arran, Scotland
• Pyroxene in Stillwater Complex Cumulate, Montana
• Hampshire Formation sandstone, plane polars
• Evaporite texture, Tonoloway Formation
• Igneous Rocks Lab Sample B
• Patuxent River Tributary Sediment at 5020x
• Barrier Lake, Mt. Baldy, and the Kananaskis Valley
• Mauch Chunk sandstone, crossed polars
• Ediacaran microbial mat: "elephant skin" texture
• Sphalerite, Crossed Polars
• Boxwork on sandstone
• Urbanite
• Sand from Clam Beach, Humboldt County, California
• Parallel Roads of Glen Roy
• Polysynethic Twinning in Albite, Crossed Polars
• Muscovite and Chlorite, Crossed Polars
• Lower Mississippian Rockwell Formation roadcut on Corridor H, West Virginia
• Devil's Racecourse, Ft. Ritchie, Maryland
• Polysynthetic Twinning in Albite, Plane Polars
• Tombolo at St. Ninian's Isle, Shetland Islands, Scotland
• Sediment from the Calvert Formation, Zone 4
• Rockwell Formation concretion, side B
• Blue quartz in weathered granitoid
• Mirevalles Deposits
• Amphibolite
• Em4 fluvial process model after a run
• Upper Gypsum Springs Formation - Sheep Mountain Anticline, Wyoming
• Igneous/sedimentary contact, Arran
• L-tectonite, side view
• Sedimentary Rocks Lab Sample D
• Rockfish Gap, Virginia
• Foreknobs Formation exposed on Rt. 50 west of Gore, Virginia
• Metamorphic rocks and granite exposed along the shore of Cabbage Island, Maine
• Passage Creek NOT in flood
• Antietam Breccia 3
• Gneiss, Clear Creek, Colorado
• Carlin Canyon Unconformity
• Gigantoproductus giganteus fossils in Permian limestone, Arran, Scotland
• Foreknobs Formation- Baker Section 3
• Folded glacial outwash sediments
• Gunflint Formation SCHW 39A
• Orthoclase, Plane Polars
• Kimberlite from Barkly West, South Africa, Plane Polars
• Gypsum, var. Selenite, 3095x
• Dike cross-cutting Colonsay Group meta-sediments, Machir Beach, Islay, Scotland
• Spherulitic felsite dike, Shetland
• Igneous Rocks Lab Sample C
• Permian sedimentary rocks near the site of Hutton's Unconformity, Lochranza, Arran, Scotland
• Mylonite, Moine Thrust, Eriboll region, NW Highlands, Scotland
• Sediment from Crabtree Creek, Massies Mill, Virginia
• Igneous Rocks Lab Sample A
• Mylonite with well-developed foliation and lineation
• Fauquier Formation Rock Wall
• Stromatolites and ooids in banded iron formation
• Coquina
• Physical Geology Mineral Lab Sample 10-12
• Calcite and [?] precipitated on gneiss used as aquarium decoration, face 1 of 3
• Balls Bluff Formation Along VA-267
• Heavy mineral sediment from Pfeiffer Beach, California
• Shark teeth and whale vertebra
• Fossiliferous sandstone
• Rockwell Formation diamictite, plane polars
• Physical Geology Mineral Lab, Sample Set 1
• Echinoid hemicidaris
• Sediment from Wicklow Beach, Ireland
• Andesite with aligned feldspar phenocrysts, Little Walker Caldera, California
• Grudaidh Formation (Durness Group) w/ two vogesite sills and two faults
• Glauconite Sand Grain from Canoa, Ecuador, 3265x
• Mazon Creek Paleoplant
• Unakite, Crossed Polars
• Looking West - Sheep Mountain Anticline, Wyoming
• Plate breccia
• Grand Canyon GigaView #25 Blacktail Canyon
• Stutfield Glacier, Jasper National Park, Alberta, Canada
• Cross-bedding
• Mylonite near Eriboll, Scotland
• Ammonoids
• Augen gneiss, Transition Zone, Shetland
• Volcanic rocks exposed at Eshaness, Shetland
• Mineral Sample K; Metamorphic Rocks Lab Sample M
• Conemaugh Group, showing paleoslump and fluvial scour features, Corridor H, West Virginia
• Therapod Tracks
• Red Hole, Passage Creek, George Washington National Forest, Virginia (#1 of 2)
• Devil's Racecourse, Ft. Ritchie, Maryland
• Bergton Thrust Fault - Greenland Gap Group
• Big kink fold in Foreknobs Formation, Rt. 50 west of Gore, Virginia
• Olivine in Gabbro, Crossed Polars
• Talc
• Slate and phyllite
• Southward Facing Quarry Wall (Close Up), Corridor H
• Migmatite exposed at Sea Point, South Africa
• Mather Gorge
• Stretched belemnite fossil, Swiss Alps
• Sand from the Sea of Siam, Pattaya, Thailand
• Mazon Creek paleoplant
• Pisolites in Tansil Formation limestone, Whites City, New Mexico
• View across the Barite Valley to outcrops of the Mapepe Formation of the Fig Tree Group
• Anticline in Veach Gap
• Sediment from Roanoke River, Roanoke, VA
• Passage Creek in Flood II
• Proterozoic basement rock, Clear Creek Canyon, Colorado
• Pipe Rock, North-West Highlands, Scotland
• Coelacanth tail fossil from the Solite Quarry, Dan River Basin, Virginia
• Blue kyanite
• Sediment from Loch Assynt, NW Highlands, Scotland
• Foliated dike in foliated tonalite, cobblestone in the streets of Washington, DC
• Microcline, 2940x
• Pisolith-rich Grainstone, Tansill Formation(?), Whites City, New Mexico
• Brachiopods and crinoid stems in Mississippian-aged Reynolds Limestone
• Confusion Hill medium-range outcrop #2
• Shenandoah River - South Fork
• Strained Antietam Formation
• Outcrop of upturned Paleozoic strata on Highway 16
• Isognomon
• Dewatering structure (?)
• Hampshire Formation strata
• Helderberg limestone, plane polars
• Graded bedding in the Martinsburg Formation
• Olivine
• Felsic mylonite from the Dover Fault, Newfoundland
• Chlorite Schist, Plane Polars
• Conococheague Formation at Mulberry Run, showing stromatolites
• Campus Andesite with xenolith
• Breccia boulder
• Shelly Sand from Portrush, Northern Ireland
• Kyanite, 3175x
• Sedimentary Structure?
• Spherulitic felsite, Shetland
• Mudcracks
• Galena
• Tamengo Formation
• Placopecten clintonius interior
• Pt Lobos nonconformity
• Fold
• Graded beds of pisolites, Tansil Formation
• Contact between volcanics and sedimentary host rocks, Kinkell Ness, Scotland
• Tilted, folded, intruded metamorphic rock, Clear Creek Canyon, Colorado
• Heavy Mineral Sediment from Carmel Beach, California
• Rockwell Formation diamictite, plane polars
• Mineral Sample A
• Old Red Sandstone, cliff at Dunbar, Scotland
• Pillow basalt from Thetford Ophiolite, Quebec, Canada
• Soapstone
• Spring Forest, Skyline Drive, Shenandoah National Park
• Ammonites in contact-metamorphosed Lias, Portrush, Northern Ireland
• Nlaka Hill S1 2013-05-30
• Amphibolite
• Wapiti Fm. Volcaniclastics - Cody, Wyoming
• Klamath Faults 1
• Sedimentary Structure?
• Unknown Sedimentary Rock Sample
• Double-Terminated Quartz Crystals
• Sediment from Clear Creek in Colorado
• Pteridinium at Aarhauser
• Setters Schist
• Beach cobbles, Mill Bay, Rathlin Island, Northern Ireland
• Edinburg Formation, showing Alleghanian cleavage, near Cedarville, Virginia
• Chalcopyrite
• Sheared eclogite, Italian Alps
• Crossbedding preserved in phyllite
• Mylonite, South Mountain metamorphic core complex, Phoenix, Arizona
• Dike contact exposed at Kildonan, Arran, Scotland
• Green Tuff from Jawbone Flats, Oregon
• White Mountain escarpment, Wyoming
• Metamorphic Rocks Lab Sample O
• Amphibolite, Plane Polars
• Urchin Spine from Playa Rocosa De Piñones, Puerto Rico, at 3555x
• Beach Sand from Punta Uva, Puerto Viejo, Limon, Costa Rica
• Precipitation lamellae
• Miette Group hand sample
• Limonite
• Slab of Rockwell Formation diamictite
• Fossil Alethopteris decurrens
• "Carbonatite?"
• Anthracite
• Soft sediment deformation variety pack
• Pteridinium from Farm Aar
• North Attleboro PetSmart Outcrop - View 2
• Crinoid fossil
• Coiba Mica - Coiba Mare cave system (here is the Coiba Mare entry), Apuseni Mountains, Transylvania, Romania
• Oxidation and reduction in Hampshire Formation sedimentary rock
• Pipkrake garden
• Wavellite on quartzite
• LIDAR Weverton Formation - Blue Ridge front, Virginia
• Athabasca Glacier with prominent lateral moraines
• Igneous Rocks Lab Sample L1
• Ammonite
• Sediment from Kinkell Ness, Scotland
• Cristo Rey: Buda Formation - Fossils in the quarry
• Argentinian folds
• Conglomerate as countertop, on display in Berryville, Virginia
• Arsenopyrite
• Mather Gorge, Great Falls, Maryland
• Igneous Rocks Lab Sample K
• Conemaugh Formation sandstone
• Leesburg Conglomerate
• Sedimentary Rocks Lab Sample H
• Corundum
• Paleoproterozoic gneiss, Clear Creek Canyon, Colorado
• Pennsylvanian Conemaugh Group - cropped
• Quarry in Rockfish Conglomerate
• Sediment from North Clear Creek, Colorado
• Orthoclase, Crossed Polars
• Stromatolites, Helena Formation, near Crypt Lake, Waterton Lakes National Park, Alberta
• Tremolite, 2940x
• Rockwell Formation diamictite, crossed polars
• Sediment from Tennessee Valley Beach, California
• Augen gneiss, Transition Zone, Shetland
• Castile Fm. Evaporites
• Muscovite, Crossed Polars
• Stromatolitic Bonahaven Dolomite, south of Bunnahabhain, Islay, Scotland
• Thoroughfare Gap Weverton Formation, upper section
• Cleavage refraction in Chancellor slate, Yoho National Park, British Columbia, Canada
• Stromatolites, Helena Formation, near Crypt Lake, Waterton Lakes National Park, Alberta
• "Talking Bears" Outcrop - Sheep Mountain Anticline, Wyoming
• Marble, Crossed Polars
• Waterfall along the eastern edge of Þingvellir, 75%
• Sediment from Rehoboth Beach, Delaware
• Organ Mountains-Aguirre Springs
• Paw Paw Tunnel, upstream exit
• Plant fossils in the Allegheny Formation
• Mahantango Formation
• Oolitic Limestone
• North Attleboro PetSmart Outcrop - View 1
• Sedimentary Rocks Lab Sample D
• Carters Grove, Eastern exposure
• Passage Creek NOT in flood
• The Quake Lake Slide - Hebgen Lake, Montana
• Conglomerate with Hematite Cement, Crossed Polars
• Precambrian-Cambrian Unconformity at Putnam Station, NY
• Beach sand from Lake Ontario in Canada
• Flood deposits on Evan Thomas Creek, Kananaskis Trail, Alberta
• Fossil ginkgo leaf
• Sedimentary Rocks Lab Sample Y
• Devonian Shale (#1), South Branch of the Potomac River, West Virginia
• Dolostone
• Tonalite with cross-cutting veins, DC cobblestone
• Those aren't crinoid columnals
• Mole Hill basalt
• Porphyritic rhyolite dike, Cushendun, Northern Ireland
• Conglomerate of Cerro Toro Formation, Chilean Patagonia
• Diptera tipulidae 512
• Amphibolite, Crossed Polars
• Beartooth Highway
• Channeled Scabland with giant gravel bar, Pinto Ridge Road, Washington
• Ernietta Hill
• Calcite and [?] precipitated on gneiss used as aquarium decoration, face 2 of 3
• Quarry, Old Route 55, West Virginia
• Sand from Miami, Florida
• Proterozoic basement rock, Clear Creek Canyon, Colorado
• Grand Canyon from Pima Point
• Diatomaceous earth
• Up-close, small-scale folding, Patterson Creek Mountain Anticline WV55
• Conifer Cone
• Debris flow east of Field, British Columbia, Canada
• Lepidodendron
• Massanutten Sandstone with trace fossils
• Ripple marks and phyllitic sheen in Miette Group slate, Icefields Parkway and Trans-Canada Highway, Banff National Park
• Diabase Cobble
• Strobilus cone fossil
• Diptera tipulidae 2227a
• Pisolites in Tansil Formation limestone, Whites City, New Mexico
• Port Askaig Diamictite, Islay, Scotland
• Crinoid calyx
• Cliff's at Portuguese Beach, Mendocino, CA
• Coal, Conemaugh Formation, Corridor H, West Virginia
• Microbead found in sediment from Accotink Creek, Fairfax, Virginia
• "Chill and bake," Blackwaterfoot Beach, Arran, Scotland
• Granitic dikes in granite
• (Annotated) laminated and faulted Tonoloway Formation
• Demopolis Chalk
• Beryl
• Evaporite texture in Tonoloway Formation
• Skolithos
• Devil's Racecourse, Ft. Ritchie, Maryland
• Portrush Sill, view #1
• Calcite and [?] precipitated on gneiss used as aquarium decoration, face 3 of 3
• Glacial striations on a pebble, Rockwell Formation diamictite, Corridor H, West Virginia
• Dirty terminus of the Athabasca Glacier
• Obsidian trio
• Crossbedded sandstone
• Diorite
• Sediment from Ronasvoe, Shetland, Scotland
• Pyrites with twin fibrous "tails" or "beards"
• Snowball Earth Educational Rock Sample Suite TS-3
• Archean-aged garnetiferous basement rock from Montana
• Contact between two dikes, Blackwaterfoot, Arran, Scotland
• Andalusite in Slate, Crossed Polars
• Mt. Kidd, Kananaskis Trail, Alberta, Canada
• Rockwell Formation diamictite
• Lunar Sample 12005 Thin Section of Olivine Basalt, Crossed Polars
• Sheared gabbro from Castel Odhair
• Gunflint SCH55 22A
• McKenzie Pass Lava Flow
• Eyjafjallajökull from Flotshlid
• Grudaidh Formation w/ vogesite sill, faulted
• Foreknobs Formation - Baker section 4
• Porphyritic andesite
• Conglomerate with Calcite Cement and Hematite Cement, Plane Polars
• Allegheny Formation siltstone, crossed polars
• Sedimentary and diagenetic features in the Conemaugh Formation, Corridor H, West Virginia
• LiDAR-based digital elevation map of the Timberville, VA quadrangle
• Coastal ecology, West Boothbay Harbor, Maine
• Stretched belemnite fossil
• Buck Reef Chert
• Foreknobs Formation - Baker section 5
• Unknown Sedimentary Rock Sample
• Lower Martinsburg Formation outcrop at Funk Road and Route 11, south of Strasburg, Virginia
• Pegmatite, Red Bluff Granite
• Pyrite in greenschist
• Sediment from Suromar Rio, Naguabo, Puerto Rico
• Monocline in Hampshire Formation
• Ammonoid
• Serpulids
• Sediment from the Irrawaddy (Ayeyarwady) River, Myanmar
• Anorthosite, Adirondack Mountains, New York
• Terminal Ediacaran trace fossils
• Portrush: hornfels (contact metamorphosed Lias shale) above Portrush gabbroic/doleritic sill
• Lewisian gneiss exposed near Durness
• Kilbourne Hole - East Crater Wall
• Giant's Causeway, Northern Ireland
• Fossil Fish
• Ash and lapilli from Kilbourne Hole
• Brachiopods and crinoid stems in Mississippian-aged Reynolds Limestone
• Sedimentary Structure?
• Archean-aged phyllite, Ontario, Canada
• Passage Creek NOT in flood
• Skolithos
• North Palisade, California
• Upper Jurassic Morrison Fm. - Sheep Mountain Anticline, Wyoming
• Foreknobs Formation- Hunting Ridge 2
• Buck Reef Chert, Barberton Greenstone Belt
• Grain from Clear Creek, Colorado
• Kyanite quartzite
• Feeder trace fossils
• Cribratina duo
• Plumose structure, route 55, West Virginia
• Beartrap Canyon, Montana
• Diatomaceous earth
• Metamorphic Rocks Lab Sample S
• "Rocks of Virginia" garden at the DGMR
• Sedimentary Rocks Lab Sample Z
• Tabulate corals
• Chief Mountain, Montana
• Diatomaceous earth
• Quartz and smoky quartz
• Beekmantown Group Limestone, Harrisonburg, Virginia
• 1959 Earthquake slide and Lake in Montana
• Paleoproterozoic gneiss from Clear Creek Canyon, Colorado
• Marble
• Oolitic hematite
• Martinsburg Formation exposed at Staunton, Virginia
• Graded bed in the Martinsburg Formation
• Angular Unconformity, west of El Paso, Texas
• Migmatite exposed at Sea Point, South Africa
• "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
• Hueco Tanks
• Calvert Formation, Scientists' Cliffs, Maryland (#2 of 8)
• Hampshire Formation sandstone, crossed polars
• Granite, Wind River Canyon, Wyoming
• Floe Lake, Kootenay National Park, British Columbia, Canada
• Devonian Shale (#2), South Branch of the Potomac River, WV
• Foreknobs Formation - Baker section 2
• Silt shale
• Jackson, Michigan quadrangle
• Metasequoia
• Evaporite texture in Tonoloway Formation
• Conglomerate with Calcite Cement and Hematite Cement, Crossed Polars
• Patterson Creek Mountain Anticline 1
• Etna: auxillary crater
• Sand from Ocean Beach, San Francisco, California
• Patuxent River Sediment at 5245x
• Bow River Falls, Banff
• Limestone (biosparite)
• Snowball Earth Educational Rock Sample Suite P101A
• Sediment from Kirby Cove, Marin County, California
• Detail of Western Fold in the Large Rt 279 Outcrop, Bennington, Vermont, USA
• Eurypterid
• Hogbacks - Sheep Mountain Anticline, Wyoming
• Catoctin Formation greenstone
• Evan Thomas Flood Wash
• Mudcracks
• Bow Lake and Bow Glacier
• Catoctin Formation greenstone, Rockfish Gap, Virginia
• Mudcracks from the Belt Supergroup
• Folded turbidites of the Smaull Greywacke at Saligo Bay, Islay, Scotland.
• Bryozoan Archimedes
• Grain from Suromar Rio, Naguabo, Puerto Rico, 3015x
• Graywacke
• East Sheep Canyon - Sheep Mountain Anticline, WY
• Metamorphic cobbles on a beach on Fetlar
• Siccar Point, Scotland
• Antietam Formation (quartzite) breccia with iron and manganese oxide cement
• Sediment from Creek Trail in Sabino Canyon, Arizona
• "Leopard rock" with contact zone
• Geologic map of the Devil's Fence quadrangle, Montana
• Sand from Jumeira Beach, Dubai, UAE
• Wrecked Wrack
• Folded Tonoloway, Looking South. 8-22-12
• Ronasvoe and Ronas Hill, Shetland
• Silurian-aged mudcracks
• Spherulitic felsite, Shetland
• Buda Formation fold
• Metamorphic Rocks Lab Sample K1
• Sediment from Blackbird Caye, Turneffe Atoll, Belize
• Metavolcanic and metasedimentary mélange, Franciscan Complex, Pacifica, California
• Outcrop along Highway 15, Oman
• L-tectonite
• Chancellor Formation slate, near Yoho National Park, British Columbia, Canada
• Petersburg Granite at James River State Park - Richmond, VA
• Big Rocky Run Sediment at 4680x
• "Dunbar Marble": Mississippian limestone chock full of rugose corals
• Microbially induced sedimentary structures, Barberton
• Sedimentary Rocks Lab Sample S
• Rollup structures in dolomitic microbialaminite
• Convolute bedding in Millboro Formation sandstone
• Garnet schist
• Seneca Rocks
• Quartzite of the Weverton Formation, Thoroughfare Gap, Virginia
• Quartz: variations on a theme
• Garnetiferous schist, Wrangell, Alaska
• Astrhelia palmata
• Bloomsburg Formation sandstone
• Rounded cobble of Cuckold Formation conglomerate, St. John's, Newfoundland
• Giant current ripples, Crescent Bar, WA
• Ozark Cave 2
• Folds in the Catoctin Formation
• Kilauea surface crevice debris
• False "syncline" in Titus Canyon, Death Valley National Park
• Faulted granite dike, Rock Creek Park, Washington, DC
• Chapman's Mill, Thoroughfare Gap, Virginia
• Confusion Hill overview GigaPan #1
• Augite, Crossed Polars
• Paleoslump and Fluvial Incision Structures, Conemaugh Group, Corridor H, West Virginia
• Differential weathering in Nolichucky Formation
• Accretion lapilli
• Slabs of Brallier Formation shale, Paw Paw Tunnel
• Compositional layering in schist, Glen Roy, Scotland
• Unconformity near Portrush, Northern Ireland
• Graptolites
• Sulfur
• Graded bedding and desiccation cracks in Tonoloway Formation limestone
• Green ignimbrite overlying basalt, Berufjörður, Iceland
• Massanutten Sandstone
• Sea stacks along the coast of Shetland north of Eshaness
• Snowball Earth Educational Rock Sample Suite D-6
• Catoctin greenstone
• Spinifex texture in komatiite, Barberton Greenstone Belt, South Africa
• Petrified wood
• Red slate with elongated reduction spots
• Ordovician Oneota Dolomite 1
• Diptera tipulidae 931
• Boudinaged tourmaline in Setters Schist
• Klingle Valley metaconglomerate, Laurel Formation, Rock Creek Shear Zone, Washington, DC
• Andalusite in Slate, Plane Polars
• Metamorphic Rocks Lab Sample C
• Fossil snails in Reynolds Limestone
• Chevron Folds - Scaglia Rossa Formation, Le Marche Italy
• Folded porphyritic green metavolcanic rock, St. Anthony, Newfoundland
• Patterson Creek Mountain Anticline 2
• Oolitic limestone
• Lamprophyre, Plane Polars
• Sand from the Base of St. Mary's Glacier, Colorado
• Diaphragmus brachiopod fossils from the Reynolds Limestone member of the Mauch Chunk Formation, Corridor H, West Virginia
• Ooids
• Calamites
• Sheared Dalradian metaturbidites w/ dike tip at Lochranza, Arran, Scotland
• Ouray Ampitheater
• Rugose coral calyces
• Ball and pillow load-sag structures in Graafwater Formation
• Gneiss
• Mylonite
• View to the north of Old Rag Mountain
• Sediment from Corfu, Greece
• Sediment from Port Charlotte, Islay, Scotland
• Coccoliths and a Coccolithosphere in Classroom Chalk, 5245x
• Sediment from Clear Creek, Colorado
• Mt. Stephen, Yoho National Park, Canada
• Exposure of Catoctin Metabasalt at Point of Rocks, Maryland
• Dinwoody Formation, Sheep Mountain Anticline, Wyoming
• Sediment from Squantum Head, Quincy, Massachusetts
• Sediment from Moss Landing Beach, California
• Skolithos in the Hampshire Formation
• Volcanic bomb
• Igneous Rocks Lab Sample O
• Foram from Punta Uva, Puerto Viejo, Limon, Costa Rica, 4295x
• Disaggregated Sediment from the Choptank Formation, Zone 13
• Cape Granite exposed at Sea Point, South Africa
• Olivine-rich volcaniclastic sand and shell fragments, Kaua'i, Waimea, Hawai'i
• Ammonoid
• Bermuda "Pink Sand" Foram, 1825x
• Foram from Andros Island, Bahamas, 2900x
• Sand from Lake Erie at Ashtabula, Ohio
• Diabase at Conway Robinson State Forest, Virginia
• Mars PSP_001984_1735
• Ennis, Montana quadrangle
• Unnamed Syncline - Sheep Mountain Anticline, Wyoming
• Rutile needles on biotite from Tioga Bentonite
• Harpers Formation exposed at Glasscock Gap, Virginia (Outdoor Lab)
• Sediment from North Clear Creek, Colorado
• Gneiss and migmatite, Clear Creek Canyon, Colorado
• Gainesville West, Florida quadrangle
• Cristo Rey: Mesilla Valley Formation - folds
• Glycymeris trio
• Stromatolite, Castner Marble, Franklin Mountains, Texas
• "Sketchy Trails" Outcrop - Sheep Mountain Anticline, Wyoming
• Unknown Sedimentary Sample
• Helderberg Formation chert, crossed polars
• Faults in Fort Payne Formation, Kentucky
• Breccia in Antietam Formation, Swift Shoals 2
• Granite dike and mundy contact
• Slickensides in ultramafic rocks at Time Zone Bridge, Salmon River, Idaho
• Passage Creek: not in flood
• Volcanic arch at Dimmuborgir, near Lake Mývatn, Iceland
• Sand from the Mediterranean Sea at Torremolinos, Spain
• Chlorite slickensides from Paw Paw Bends
• Two sections through a folded sandstone slab ("ploudin") from the mass transport deposit at the end-Devonian section on Corridor H, West Virginia
• Cushendun Conglomerate of the Cross Slieve Group, Cushendun, Northern Ireland
• Wall of Makanda Sandstone, Giant City State Park, Illinois
• Sediment from the Black Sea off the coast of Zatoka, Odessa Oblast, Ukraine
• Blastoid, side view
• The Fossil Forest, near Lulworth Cove, Dorset
• Snowball Earth Educational Rock Sample Suite AB-1
• "The Ampitheater" in Hyalite Canyon, Gallatin Range, Montana
• Graphite Schist, Plane Polars
• Helderberg fault breccia contact
• Pope's Head Formation showing cross bedding on the plane of foliation
• Mahantango Formation, showing fossil brachiopod fauna
• Sediment from St. Vincent's, Avalon Peninsula, Newfoundland and Labrador
• Chancellor Group showing deformation, Yoho National Park, British Columbia, Canada
• Contact between New Market Formation (lower unit) and overlying Lincolnshire Formation (upper unit), near Staunton, Virginia
• Skolithos
• Patuxent River Sediment at 3035x
• Klingle Valley metaconglomerate, Laurel Formation, Rock Creek Shear Zone, Washington, DC
• Peridotite from the Josephine Ophiolite, Crossed Polars
• Meta-komatiite
• Mylonite
• S2 meteorite impact tsunami deposit, Barberton Greenstone Belt
• Alethopteris
• Slickensides of epidote in diorite
• Greenland Gap Group Shale - Bergton, VA
• Gabbro
• Lower Mississippian Rockwell Formation roadcut on Corridor H, West Virginia
• "Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
• Unknown Igneous Rock Sample
• Pseudotachylyte from Vredefort, South Africa
• Contact between Fauquier Formation marble and Catoctin Formation greenstone, near Lime Kiln Road, Virginia
• Cloudina graveyard
• Titanite
• S-C Mylonite
• Felsic spherulite from Shetland
• Cape Granite
• Contact between Fauquier Formation marble and Catoctin Formation greenstone, near Lime Kiln Road, Virginia
• Foreknobs sandstone, plane polars
• Buttress Unconformities
• Fusulinids
• Unakite from Vesuvius, VA
• Paradise road North side east of bridge shot 5
• Hueco Group Tom Mays State Park El Paso TX
• Graptolite fossils in the Martinsburg Formation
• Storm deposit in Reedsville Formation
• Bloomsburg Formation outcrop
• Castner Marble roadcut in Franklin Mountains
• Gneiss and migmatite, Clear Creek Canyon, Colorado
• Stromatoporoid
• Unknown Sedimentary sample
• Confusion Hill medium-range outcrop #4
• Ash from Mount St. Helens
• Sedimentary Rocks Lab Sample K
• Lower Mississppian Rockwell Formation roadcut on Corridor H, West Virginia
• Grand Canyon 1
• Giant eurypterid trackway, near St. Andrews, Scotland
• Sedimentary Rocks Lab Sample J
• "Bermuda Pink Sand" with Forams
• Paleoproterozoic gneiss, Clear Creek Canyon, Colorado
• LiDAR view of the Northern Fort Valley and Massanutten Mountain
• Aquia Creek Sandstone (2)
• Diptera tipulidae 2223b
• Slickenfibers in serpentenite
• Folded turbidites at Saligo Bay, Islay, Scotland
• Ammonites in contact-metamorphosed Lias, Portrush, Northern Ireland
• Sediment from Sarandë, Albania
• Meta-ignimbrite of the Catoctin Formation, near Linden, Virginia
• Wills Mountain, The Narrows, Cumberland, Maryland
• Kink bands in Dalradian schist, Shetland
• Keyser Limestone
• Unakite
• Cross-bedding in Massanutten Sandstone
• Giant current ripples from Missoula Megafloods, Crescent Bar, Washington
• Clastic dike within Castner Marble, Franklin Mountains, Texas
• Chimney Rock - Front View
• Goðafoss; upper gorge, Iceland.
• Barberton komatiites in outcrop
• Luray, Virginia quadrangle
• Unknown Sedimentary Rock Sample
• Graptolite fossils from Dobb's Linn, Scotland
• Sediment from Kotor, Montenegro
• Igneous Rocks Lab Sample Z
• Cairn Formation, Bow River Parkway, Banff National Park, Alberta, Canada
• Sand from the Delaware River, Delaware
• Giant ooids
• Confusion Hill detail shot 1
• Buda Formation Fold
• Skolithos
• Fauquier Formation Outcrop
• Corona Heights Fault, San Francisco
• Huckleberry Ridge Tuff Angular Unconformity near Gardiner, Montana
• Whipcove Anticline - faulted eastern limb
• Whipcove Anticline, Corridor H. 8-22-12
• Lunar Basalt Sample 12005, Plane Polars
• Sand from Veach Gap, George Washington National Forest, Virginia
• Anticline in Edinburg Formation, Opequon Creek, Clarke County, Virginia
• Asterotheca miltoni
• Curly graptolites
• Cristo Rey: Buda Formation - folds and faults
• Porphyritic Andesite, Plane Polars
• Swift Dam anticline, looking west
• Lapilli from near Chaupi, Ecuador
• Enstatite, Plane Polars
• Subhedral halite
• Fault breccia from the scarp of the Hebgen Lake Fault, southern Montana
• Biotite Granite, Crossed Polars
• Sphalerite on Fossiliferous Chert
• Moore House Member - West
• Tonoloway Formation - Corridor H, east of Baker, WV
• Tuscarora Sandstone exposed at Hanging Rock Anticline, West Virginia
• Sediment from Passage Creek, Fort Valley, Virginia
• A second view of the felsite intrusion
• Cross-cutting dikes in gabbroic host rock in Georgetown Intrusive Suite.
• Gypsum, var. Alabaster, Crossed Polars
• Broad Run
• Hutton's Unconformity, Arran, Scotland
• Sand Grain from Kirby Cove, Marin Headlands, California at 3425x
• Mudcracks
• Mineral Sample O
• Lamprophyre, Crossed Polars
• Sediment from Vulcano, Aeolian Islands, Italy
• Tourmaline Schist, Crossed Polars
• Diptera tipulidae 1215
• Biotite
• Conemaugh Group, showing paleoslump and fluvial scour features, Corridor H, West Virginia
• Massanutten Sandstone
• Antietam Breccia 2
• Porphyry
• Hibriten Mylonite
• Fine sandstone
• View over the Komati Valley
• Dike in diabase
• Slate
• Ghaub Formation diamictite with Snowball Earth glacial dropstones
• Halite casts
• Peridotite from the Josephine Ophiolite, California
• Smoo Cave
• Crinoid columnal horizon
• Arctomys siltstone and shale, southeast of Cirque Peak, Banff National Park, Alberta, Canada
• Giant's Causeway, Northern Ireland
• "Bookshelfing" style boudinage
• Stromatolites, Helena Formation, near Crypt Lake, Waterton Lakes National Park, Alberta
• Trimmers Rock
• Proterozoic basement rock, Clear Creek Canyon, Colorado
• Rockwell Formation diamictite, plane polars
• Carmel Valley River Deposits
• Anticline in Veach Gap
• Arkose, Cushendun
• Sediment from Lake Ashi, Kanagawa Prefecture, Japan
• Polished green porphyritic metavolcanic from St. Anthony, Newfoundland
• Overlook from High Point Mountain- April 9th 2012
• Sediment from Fernandina Beach, Amelia Island, Florida
• Murri Anticline and Oman Ophiolite
• Grind of the Navir
• Weverton Formation at Outdoor Lab (Biscuit Mountain)
• Panorama of Reynisfjara beach in Iceland
• Fossil Mariopteris
• Difficult Run Migmatite 2
• Reaction rim
• Beach sand from Hapuna Beach on the Big Island of Hawaii
• Mariopteris
• Castner Marble
• Sediment from the St. Ninian's Isle Tombolo, Scotland
• Hornblende Sand Grain, 3265x
• Meta-diamictite of the Mechum River Formation, Sharp Top, Virginia
• Sykesville Formation, Chain Bridge Flats, DC
• Talc, Crossed Polars
• Bishop Tuff F2 Ashfall
• Volcaniclastic sediment, Kirkjufjara Beach, Iceland
• Leggetts Gap-Section 4
• Fossil Annularia
• Diorite, Plane Polars
• Scleractinian coral
• Channel forms and clinoforms in the Hampshire Formation
• Agglomerate, Eshaness, Shetland, U.K.
• Siccar Point, Scotland
• Teredo, edge-on
• Sedimentary Structure?
• Devil Canyon Overlook, Bighorn Canyon National Recreation Area, Wyoming
• Microbially-induced sedimentary structures in Stoer Group, Clachtoll, Scotland
• Igneous Rocks Lab Sample J
• Bliss Sandstone
• Andalusite
• Conglomerate
• View SSW from Duncan Knob, George Washington National Forest, Virginia
• Laminated Shale, Crossed Polars
• Bishop Tuff
• Bluestone Limestone, Carrier Library Exterior, James Madison University
• Martinsburg Formation, South Page Valley Road, Page County, Virginia
• Martinsburg Formation
• Slaughter Canyon, Guadalupe Mountains, New Mexico
• Ammonite showing ammonitic sutures
• Sand from Al Madam, Sharjah, UAE
• Tuff, crossed polars
• Arkose
• Westward Facing Quarry Wall (Wide View), Corridor H
• Blastoid, top view
• Bow Falls Tool Marks
• Ball and pillow
• Archean/Cambrian nonconformity at Wind River Canyon, Wyoming
• Serpulids
• Mineral Sample P
• Rugose coral
• Alabaster
• Buzzard Rocks
• Sand from Bromley Brook, Manchester, Vermont
• Diorite, Crossed Polars
• Foreknobs formation- Corridor H Needmore section 3
• Augite, Plane Polars
• Port Askaig "Tillite" (Diamictite), Islay, Scotland
• Alluvium and soil profiles
• Enstatite, 3095x
• Garnet Mica Schist, Plane Polars
• Mineral Sample I
• Deer Mountain Tephra Unconformity
• Sediment from the Calvert Formation, Base of Zone 10
• Rockfish Quarry 2
• Argentinian folds
• Albite in Diorite, Plane Polars
• Phyllite with garnet
• Pennsylvanian Alleghanian Formation
• Physical Geology Minerals Lab Sample 2a
• Physical Geology Mineral Lab Sample 10-4
• Holey Hampshire Formation
• Rocky Islands
• Biotite sand
• "Casa del Snake" Outcrop - Sheep Mountain Anticline, Wyoming
• Coal
• Microfiber Pollution in Sediment from Sandy Cove, Newfoundland and Labrador
• Crossbedding preserved in Popes Head schist
• Snowball Earth Educational Rock Sample Suite 29
• Serpentine Marble, Plane Polars
• Sheridan College dinosaur quarry
• Biotite
• Duplex Structure in the Gastropod Limestone, Sandy Hollow, Montana
• Mahantango Formation showing trace fossils, Fort Valley Road, Virginia
• Sediment from Wadi Al Khames, Al Hajar Mountains, Oman
• Rift zone at Þingvellir, Iceland
• Mylonite, North-West Highlands, Scotland
• Bivalves
• Limestone quarry on Old Route 55, West Virginia
• Papilliform stromatolite, Green River Formation
• Imbricate zone, Durness Limestones, North-West Highlands, Scotland
• Chlorite slickensides
• Ulster White Limestone ("The Chalk") with belemnite fossil, Rathlin Island, Northern Ireland (U.K.)
• Diptera 2043a
• Sediment from Cushendun, Northern Ireland
• Marcellus Shale, plane polars
• Blueschist (fine-grained; ~phyllite)
• Ptygmatic folding in gneiss
• Amygdules in Catoctin Formation
• Igneous Rocks Lab Sample M
• Trace fossils in green siltstone
• Sand from the Cache La Poudre River, Colorado
• Milky quartz
• Hell's Half Acre, Wyoming
• Foram from Blackbird Caye, Turneffe Atoll, Belize, 2785x
• Echinoid
• McDonald Creek, Glacier National Park
• Taconic Angular Unconformity near Catskill, NY
• Sphalerite
• Faulted Tonoloway
• Scenic Drive Formation fossil layer
• Metatuff from the Catoctin Formation, South Mountain, Maryland
• Page Valley, Virginia
• Red Leaf, Arkansas-Mississippi
• Conglomerate with Hematite Cement, Plane Polars
• Channels in the Hampshire Formation
• Fossils and storm deposits in Tonoloway limestone
• En echelon tension gashes in quartz arenite
• Recumbent anticline in the Edinburg Formation, Page County, Virginia
• Port Askaig Diamictite, Islay, Scotland
• Gastropod shells
• Klamath Basin
• Blueschist-grade folded metachert+shale
• Grand Teton range 1
• One nautiloid, one ammonoid
• Pyrrhotite
• Tourmaline in Lepidolite
• Trilobite Asaphiscus wheeleri
• Migmatite, Crossed Polars
• Folded calc-silicate
• Lake Wales, Florida quadrangle
• Stromatoporoid
• Martinsburg Formation, South Page Valley Road, Page County, Virginia
• Quartz pebble metaconglomerate (quartzite) of the Silurian Tuscarora Formation, West Virginia
• Sediment from the end of the swimming run at Blue Spring State Park, Orange City, Florida
• Cobbles, Church Bay, Rathlin Island, Northern Ireland
• Natural Bridge, Yoho National Park, British Columbia, Canada
• Catoctin Formation metabasalt showing amygdules and asbestos veins
• Annandale, Virginia quadrangle
• Curwensville Reservoir
• Chippewa Falls (Wide)
• Migmatite, Plane Polars
• Konnarock Formation
• Gabbro, Fetlar, Shetland
• Foreknobs Formation- Corridor H Needmore section 1
• Heliophylum halli
• Marcellus Shale, crossed polars
• Petrified wood
• Snowball Earth Eduational Rock Sample Suite TS-7
• Felsite intrusion, Iceland
• Sand from the Hudson River at Stuyvesant, New York
• Folded gneiss from Clear Creek Canyon, Colorado
• Chert
• Martinsburg Formation, South Page Valley Road, Page County, Virginia
• Mylonite
• Folded metamorphic rocks exposed along the shore of Cabbage Island, Maine
• Geologic Map of the Annandale Quadrangle, Fairfax and Arlington Counties, and Alexandria City, Virginia
• Gypsum, var. Alabaster, Plane Polars
• Chlorite porphyroblasts in Popes Head Formation schist
• Flat lying lake strata, Yesnaby, Orkney, U.K.
• Spiral graptolite
• Indiana limestone at the Duke Ellington Bridge, Washington, DC
• Sulphur Springs, Hillsborough County, Florida quadrangle
• Fossil Annularia
• Kingston, Washington County, Rhode Island quadrangle
• Ooids and rip-up clasts
• Beryl, Plane Polars
• Dismembered, folded sandstone body from Corridor H, WV, crossed polars
• Azurite and malachite
• Sedimentary Rocks Lab Sample O
• Lower Rainbow Canyon, Death Valley National Park
• Siliceous Oolite, Plane Polars
• Sedimentary Rocks Lab Sample A
• Martinsburg Formation, Millner Road (near Deer Rapids Road), Shenandoah County, Virginia
• Graded bedding in the Mechum River Formation, Sharp Top
• Physical Geology Mineral Lab Sample 2b
• Helderberg limestone, Corridor H, West Virginia
• Amphibolite
• Conemaugh Formation sandstone
• Chesapecten middlesexensis
• Rockwell Formation diamictite, crossed polars
• Laminated Rockwell Formation diamictite
• Hutton's Unconformity on the Isle of Arran
• Recumbent anticline in the Edinburg Formation, Page County, Virginia
• Annotated Anticline/Syncline Pair Patterson Creek Mountain Anticline WV55
• Coquina
• Unknown Sedimentary Rock
• Tubestone stromatolite
• Metamorphosed, boudinaged bedding of the Mather Gorge Formation
• Öxará River at Þingvellir National Park, Iceland
• Scenic Overlook, Looking West, West Virginia
• Sediment Deposited by Hurricane Camille, Nelson County, Virginia
• Faults, near Guadalupe Mountains National Park
• Baraboo Quartzite - Van Hise Rock
• Coelacanth tail fossil from the Solite Quarry, Dan River Basin, Virginia
• Foreknobs Formation - Corridor H Needmore section 2
• Stylolite in Helderberg Group limestone, West Virginia
• Snowball Earth Educational Rock Sample Suite 36
• Porphyroblastic schist, Glen Roy, Scotland
• Lamprophyre dikes at Mather Gorge, Great Falls, Virginia
• Diptera tipulidae 1076
• Bermuda "Pink Sand" Foram, 2495x
• Kilbourne Hole, detail A
• Igneous Rocks Lab Sample I-B
• Flute casts in Brallier Formation shale
• Swift Run Formation
• Kaolinite
• Sediment from Biscuit Run, Virginia
• Annularia radiata
• Whipcove Anticline
• Porphyroblastic Turkish blueschist
• Sodium-rich Plagioclase Feldspar at 1915x
• Port Askaig Diamictite, Islay, Scotland
• Sunwapta Glacier
• Foreset beds in gravel dune complex near Soap Lake
• Ultramylonite
• Lava flow of 1944, Vesuvius
• Marble and blueschist, Perissa, Greece
• Second Generation Quartz, Billy Goat Trail
• Fault breccia, Hebgen Lake Fault, Montana
• Arthrophycus
• Kimberlite from Barkly West, South Africa
• View east over paleotopographic relief at the base of the Buck Reef Chert
• Gabbro, Crossed Polars
• Folded Brallier Shale, south side of NEW New WV 55
• Granite exposed along the shore of Cabbage Island, Maine
• Sample D
• Confusion Hill detail shot 1 - Castner Formation
• Cabin Creek Scarp - Hebgen Lake, Montana
• Chimney Rock - Side View
• Leopard Rock of the Beartooth Highway
• Syenite
• Palmyra, New York quadrangle
• Graded bedding in the Martinsburg Formation
• Actinolite in Actinolite Schist, Plane Polars
• The French Thrust, Sun River Canyon, Montana
• Hueco Tanks
• Cathedral Peak granodiorite
• Slumped boulder (serpentinite colluvium), Marshall's Beach, San Francisco
• Conglomerate of the Cerro Toro Formation, Chilean Patagonia
• Cinder cone, Snæfellsnes Peninsula
• Dolomite, Crossed Polars
• Miette gritstone with outsized clast, southern Icefields Parkway, Banff National Park
• Mineral Sample Set N
• Granite slab, Haupt Gardens, Smithsonian Instituion, Washington, DC
• Coarse Sediment from Rathlin Island, Northern Ireland
• Plagioclase feldspar
• Turbidites at Garrapata Beach, Big Sur, California
• Selenite
• Rugose coral calyces
• Travertine
• Snowball Earth Educational Rock Sample Suite 7
• Meteorite from Morocco
• Eocene-aged herring Knightia eoceana
• Sediment from Myrtle Creek, Myrtle Beach, Del Norte County, California
• Igneous Rocks Lab Sample E
• Outcrop at the intersection of Fort Valley Road and Ramsey Road, Fort Valley, Virginia
• Icefield Centre, Jasper National Park, Alberta, Canada
• Sub-Torridonian unconformity, North-West Highlands, Scotland
• Kimberlite from Barkly West, South Africa, Crossed Polars
• Sedimentary Rocks Lab Sample X
• Martinsburg Formation at Guard Hill, north of Front Royal, Virginia
• Folded and faulted rocks at Summerleaze Beach, Bude
• Granite
• Shark Bay 1
• Schist trio
• Mineral Sample J
• Paleoproterozoic gneiss, Clear Creek Canyon, Colorado
• Tombolo at St. Ninian's Isle, Shetland Islands, Scotland
• Metamorphic rocks exposed along the shore of Cabbage Island, Maine
• Sediment from Spanish Bay Beach, CA
• Barite
• Kilbourne Hole, detail B
• The Alex Bay Cut
• Great Unconformity, Wind River Canyon, Wyoming
• Fagopsis leaf
• Chippokes Plantation, near visitor center
• Carbla Beach 1
• Sediment from the Great Rift Valley, Kenya
• Passage Creek Fauna of the Martinsburg Formation
• Blastoid, side view
• Kilbourne Hole, detail A
• Sediment from L'Anse aux Meadows, Newfoundland
• Meta-ignimbrite of the Catoctin Formation
• Brecciated and folded Montoya Group
• Giant's Causeway, Northern Ireland
• Waterfall Formation boulder
• Milldale Antietam Breccia
• Sandstone and conglomerate
• S3 spherulite, Fig Tree Group, Barberton Greenstone Belt
• Mt. Louis, Banff National Park, Alberta
• Shoshone Canyon - Cody, Wyoming
• Sediment from Dunbar, Scotland
• Pyrolusite dendrites on a limestone joint surface
• Anorthosite, Adirondack Mountains, New York
• Swift Dam, Montana
• Sillimanite in kaolinite
• Boninite, New Calendonia
• Ulster White Limestone
• Cleavage in folded turbidites at Saligo Bay, Islay, Scotland.
• Porphyritic Rhyolite, Plane Polars
• Kuruna clast with stromatolite
• Flat pebble conglomerate, Gros Ventre Formation
• Garnet
• Graphite
• Table Mountain Sandstone, South Africa
• Sandstone with Calcite Cement, Plane Polars
• Stockdale Kimberlite
• Physical Geology Mineral Lab Sample 10-1
• Calcite
• South lateral moraine, Athabasca Glacier (inside view)
• Augite
• Anticline/Syncline Pair, Patterson Creek Mountain Anticline, WV55
• Mudcracks and gypsum casts
• Miette gritstone with scour incision and mudchip rip-up clast-rich strata, Banff National Park, Alberta, Canada
• Massanutten Sandstone exposed on Fort Valley Road
• Amygdular (amygdaloidal) Catoctin Formation meta-basalt, Blue Ridge, Virginia
• Faulted strata
• Hole In The Rock, Papago Park, Tempe, Arizona
• Gypsum, var. Satinspar, 2800x
• Euomphalus fossil
• Harpers Formation, Harpers Ferry, West Virginia
• Rose Hill Formation / Tuscarora Formation contact
• Encrinite
• New Market limestone, plane polars
• Bituminous coal
• Klingle Valley metaconglomerate, Laurel Formation, Rock Creek Shear Zone, Washington, DC
• Garnet schist
• Staurolite
• Sand from Paphos, Cyprus
• Grind of the Navir
• Porphyritic andesite, Crazy Mountains, Montana
• Ignimbrite from Berufjörður, Iceland
• Meteorite NW Africa 869, cut and polished face
• Augen gneiss
• Hampshire Formation, Corridor H, West Virginia
• Ellipsoidal reduction spots in Welsh slate
• "Pocket Sand" from the Ace of Diamonds Mine, Herkimer, New York
• Strophomenid brachiopods
• Anhydrite
• Balls Bluff Siltstone
• Sedimentary Rocks Lab Sample R
• Classroom Chalk, Gypsum, 3665x
• El Capitan, West Texas
• Diorite, Crossed Polars
• Bryozoan-rich limestone
• Mahantango limestone, plane polars
• Calcite in Precambrian-Aged Amygdaloidal Basalt, Crossed Polars
• Carbonized fern
• Pond at the south end of the Roonivoolin Trail, Rathlin Island, Northern Ireland, U.K.
• Stretched belemnite fossil, Swiss Alps
• Rockwell Formation diamictite
• Diptera tipulidae 043
• Sediment from Katsura River, Kyoto
• Siderite
• Plant fossils in the Allegheny Formation
• "Fubarite" Outcrop - Sheep Mountain Anticline, Wyoming
• Muscovite staurolite schist
• Diptera tipulidae 840
• Fossiliferous siltstone (Martinsburg Fm?) with prolific fossils
• Unknown Sediment Sample
• Cairn Formation, Bow River Parkway, Alberta
• Idaho Batholith contact
• Diptera 1105a
• Rock Gypsum, Crossed Polars
• View southwest across Church Bay, Rathlin Island, Northern Ireland
• Ignimbrite at Grind of the Navir
• Overlook, YMCA Camp Harrison, North Carolina
• Marble Breccia, Plane Polars
• Portrush: hornfels (contact metamorphosed Lias shale) above Portrush gabbroic/doleritic sill
• Portrush Sill, view #3
• New Market to Lincolnshire to Edinburg Limestones - Strasburg, VA
• Granite
• Brachiopod fauna of the Nealmont Formation, Germany Valley, WVA
• Sand from the Atlantic Ocean, Point Smith, New York
• Shawangunk Conglomerate, Pennsylvania
• Migmatite
• Lunar Breccia Sample 65015, Plane Polars
• Syncline Fold, Corridor H
• Sand from a dry wash near Block Mountain, Montana
• Ostracodes and brachiopods in Tonoloway Formation limestone
• Precambrian / Cambrian Unconformity, Ogofgolchfa
• Paleoplant in Hampshire Formation
• Miette Group slate, Trans-Canada Highway and Icefields Parkway junction, Banff National Park
• Sand from Siesta Key, Florida
• Helen Lake stromatolites, Banff National Park, Alberta, Canada
• Small folds in the Foreknobs Formation, Rt. 50 west of Gore, Virginia
• Fossil Seed Fern
• Alluvial gravel, Bow River, Banff
• Cribratina
• Another Column at YMCA Camp Harrison, North Carolina
• Gabbro, Fetlar, Shetland
• Detail of Eastern Fold in the Large Rt 279 Outcrop, Bennington, Vermont, USA
• Rainbow Canyon, Death Valley National Park
• Sedimentary Rocks Lab Sample U
• Desiccation cracks in the Silurian Tonoloway Formation
• Pteridinium from Farm Aar
• Wills Mountain South End, Cumberland, Maryland
• Sediment from South Ari Atoll, Republic of Maldives
• Rutilated quartz with ilmenite
• Rock salt (halite) from the Dead Sea, Israel
• Coleoptera 1030b
• Banded Iron Formation
• "Cub Sandstone" (Uppermost Martinsburg Formation), near Catherine Furnace, Virginia
• Chromite olivine cumulate, Stillwater Complex, Montana
• Marine microfossils
• Kilbourne Hole, detail B
• Anorthite, 3015x
• Maidens Gneiss, Plane Polars
• Graptolites
• Angular unconformity, Death Valley National Park
• Shear zone in granite
• Garnet-bearing anorthosite
• Microbially induced sedimentary structures, Barberton
• Sand from the Atlantic Ocean at Monte de Estoril, Portugal
• Salterella Grit, North-West Highlands, Scotland
• Goethite
• Suite of four metamorphic index minerals
• Precambrian-aged Castle Danger Amgygdaloidal Basalt
• Rock Wall, Fetlar, Shetland
• Sedimentary Rocks Lab Sample C
• Igneous Rocks Lab Sample H
• Marble, Plane Polars
• Ammonites in contact-metamorphosed Lias, Portrush, Northern Ireland
• Klamath Faults 2
• Tauz karst spring - the deepest underwater cave in Romania (view from south)
• Fault breccia in the Helderberg Group
• Microbially-induced sedimentary structures, sandstone, Barberton Greenstone Belt, South Africa
• Georgetown Intrusive Suite, Rock Creek Park, Washington, DC
• Fascinating Folded Float under Route 15 Bridge at Point of Rocks, Maryland
• Red Bluff Granite
• Mudcrack Wall, limestone quarry on Old Route 55, West Virginia
• Sediment from Tangalle, Sri Lanka
• Metamorphic Rocks Lab Sample H
• Malachite
• Unknown Sedimentary Sample
• Magnesium Dendrites
• Metamorphic Rocks Lab Sample G
• Mud cracks in Castner Marble argillite
• Soft sediment deformation in Hampshire Formation
• Sediment from Mill Creek, Fort Valley, Virginia, USA
• Outcrop of Weverton Formation quartzite atop Biscuit Mountain, Pond Mountains (South of Thoroughfare Gap), Virginia
• Rippled Eldon Formation
• Quartzite, plane polars
• Klingle Valley metaconglomerate, Laurel Formation, Rock Creek Shear Zone, Washington, DC
• Fossiliferous Limestone, Plane Polars
• Bedding / cleavage relationships in Chancellor Group slates, Yoho National Park, British Columbia, Canada
• Glycymeris trio
• Pyroxene phenocrysts from Mt. Vesuvius
• Cottonwood Creek; Boise, Idaho
• Sediment from Jenner, CA
• Zoophycos
• Rutile, Plane Polars
• Volcanic arches at Dimmuborgir, near Lake Mývatn, Iceland
• Unknown Igneous Rock Sample
• Igneous intrusions in gneiss, Clear Creek Canyon, Colorado
• Shatter cones, Vredefort impact structure, South Africa
• Felsite intrusion, Iceland
• Heavy mineral sands in planar laminations
• Sediment from Scientists' Cliffs, Maryland
• Stylolites in Tonoloway Formation limestone
• Catoctin amygdules
• The Hogback Hoodoo - Sheep Mountain Anticline, Wyoming
• Patuxent River Tributary Sediment at 3355x
• New Market limestone, crossed polars
• Folded garnetiferous beds, Leinster Granite aureole, Ireland
• Till
• Fuchsite
• Basaltic cliffs, Roonivoolin Trail, Rathlin Island, Northern Ireland, U.K.
• Dalradian phyllite from Trondra, Shetland
• S-C mylonite
• Brachiopods and crinoid stems in Mississippian-aged Reynolds Limestone
• Rhyolite
• Igneous Rocks Lab Sample P
• Sediment from Korčula, Croatia
• Brachiopod fauna of the Nealmont Formation, Germany Valley, West Virginia
• Lake strata, Yesnaby Coast, Orkney
• Mylonite / "LS Tectonite"
• Old Red Sandstone, cliff at Dunbar, Scotland
• Cincinattian limestone with lots of fossil components
• Biotite Gneiss, Plane Polars
• Weathered and jointed ignimbrite, Grind of the Navir, Shetland
• Scoria
• Biotite Gneiss, Crossed Polars
• Grus
• Fusulinid-bearing Hueco Limestone from West Texas
• Contorted Columns
• Martinsburg Formation, South Page Valley Road, Page County, Virginia
• Massanutten Sandstone
• Barite horizon within Mapepe Formation, Fig Tree Group, Barberton Greenstone Belt, South Africa
• Argillaceous sandstone
• Diamond fossils in limestone
• Sediment from Kirby Cove, Marin County, CA
• Augen Gneiss, Crossed Polars
• "Blue granite" from Brazil
• Ostracodes in Tonoloway Formation limestone
• Pyritized brachiopods
• Beach sand from the Puna Coast, Big Island, Hawaii
• Passage Creek: not in flood
• Stromatolites, Helena Formation, near Crypt Lake, Waterton Lakes National Park, Alberta
• Sand from Vista Point, Del Norte County, California
• Chromite olivine cumulate, Stillwater Complex, Montana
• The Clydesdale Fault, Washington, DC
• Cobble of amygdaloidal basalt from Precambrian-aged Castle Danger Formation
• Dropstones in weakly-lithified "silt-ite" from Looking Glass Highway, east of Glacier National Park
• Quartzite, crossed polars
• Hymenoptera 1121
• Sandstone with Calcite Cement, Crossed Polars
• Mill Bay, Rathlin Island, Northern Ireland
• Trilobite Elrathia kingi
• Paw Paw Tunnel, downstream exit
• Lincolnshire limestone, plane polars
• Actinolite, 2940x
• Maidens Gneiss, Crossed Polars
• Maidens gneiss from the Goochland Terrane
• Rt. 50 cut, Mt. Pleasant Syncline, east limb lower section
• Allegheny Formation chert, crossed polars
• Graded bed in Tonoloway Formation
• Serpentinite melange, Marshall's Beach, San Francisco
• Lewisian gneiss exposed near Durness, Scotland
• Southern Franklin Mountains
• Topaz
• Mydarsjokull, Iceland
• Metamorphic Rocks Lab Sample K2, Bottom View
• Rockwell Formation diamictite, Sideling Hill, Maryland
• Ridgeley Sandstone fauna
• Bar 3 cross section, near Wilson Creek, Washington
• Komatiite
• Ostracode fossils in Tonoloway Formation
• Brachiopod fauna of the Nealmont Formation, Germany Valley, West Virginia
• Sediment from the Outer Banks, North Carolina
• Sediment from Beaverdam Creek, Virginia
• Mist Mountain Formation (Kootenay Group), Canmore, Alberta
• Fusulinid-rich sediment
• Diptera tipulidae 2380a
• Derrick Quarry near Romney, West Virginia
• Stromatolitic chert from the ~1.9 Ga Gunflint Formation
• Giant Current Ripples, Crescent Bar, Washington
• Precambrian-Aged Castle Danger Amygdaloidal Basalt, Crossed Polars
• Mafic enclaves in the Kaap Valley Pluton, Barberton Greenstone Belt, South Africa
• Unknown Sedimentary Sample
• Plaid Twinning in Microcline, Crossed Polars
• Siltstone
• Millboro Formation carbonate nodule
• Dike contact exposed at Kildonan, Arran, Scotland
• Garnet Mica Schist, Crossed Polars
• Mantle xenolith
• Classroom Chalk, Dolomite and Gypsum Blend, 3665x
• Mahantango Formation oolite with intraclast
• Passage Creek in flood
• Pekisko Formation, Lac des Arcs, Alberta
• Snowball Earth Educational Rock Sample Suite TS-20
• Rockwell diamictite, plane polars
• Internal mold of a clam
• Zircon, 3875x
• Schist, Wind River Canyon, Wyoming
• Castner Marble
• Littleton Formation schist from Mt. Washington, New Hampshire
• Trimmers Rock Bouma sequences
• Pyritized brachiopods
• Verdite
• S-C fabric in Rockfish Conglomerate, Virginia Blue Ridge
• Cretaceous strata at Swift Dam
• Sediment from Clachtoll Beach, Scotland
• Bryozoans in Madison Formation Limestone
• Portrush: hornfels (contact metamorphosed Lias shale) above Portrush gabbroic/doleritic sill
• Ferruginous quartzite
• Amygdular meta-basalt, western Sierra Nevada, California
• Basal Cambrian burrows
• Rudist
• Sediment from Little Cayman
• Rollup structures in dolomitic microbialaminite
• Brallier Shale on NEW New WV 55 (version 1)
• Sykesville Formation, Chain Bridge Flats, DC
• Red Hole, Passage Creek, George Washington National Forest, Virginia (#2 of 2)
• Sand from LaParee Beach, Bretignolles-sur-Mer, France
• Jura as viewed from Islay
• Metamorphic Rocks Lab Sample P1 (left) and P2 (right)
• Syncline in Helderberg Group
• Echinoid hemicidaris
• Porphyritic vesicular basalt from Ka Lae, Hawaii
• Metatuff from the Catoctin Formation, South Mountain, Maryland
• Komatiitic ash (meteorite impact layer), Barberton Greenstone Belt, South Africa
• Migmatite on the Billy Goat Trail, Great Falls, Maryland
• Stoer group unconformity (over Lewisian gneiss), Clachtoll, Scotland.
• Ostracode from St. Ninian's Isle Tombolo, Scotland, at 2495x
• Flat pebble conglomerate, Gros Ventre Formation
• Miette Group Outcrop Ellipsoid
• Limestones near Carlsbad, New Mexico
• Rockwell Formation diamictite
• Ronasvoe beach gravel
• Metamorphic Rocks Lab Sample I
• Boudinaged sandstone layer within Miette Group slate, Banff National Park, Alberta, Canada
• Bermuda "Pink Sand" Foram, 2415x
• Metamorphic Rocks Lab Sample R
• Foram from Bell's Beach near Victoria, Australia, 2870x
• El Paso Arroyo
• Echinoid hemicidaris
• Klingle Valley metaconglomerate, Laurel Formation, Rock Creek Shear Zone, Washington, DC
• Fossil Lepidodendron
• Quartzite
• Physiography of the central Appalachians
• Volcaniclastics from the volcanic highlands near Grímsstaðir, Iceland
• Granite vein cutting Paleoproterozoic gneiss, Clear Creek Canyon, CO
• Cristo Rey: Buda Formation - Fossils in the quarry
• Sedimentary Structure?
• Sediment from Ocean Beach, San Francisco, California at 3125x
• Biotite
• Talc
• Smithsonian Castle, Washington, DC
• View over paleotopography below the Buck Reef Chert
• Ghost boundaries in quartzite, plane polars
• Weverton Formation
• Paleoproterozoic Gneiss, Clear Creek Canyon, Colorado
• Aragonite
• Anorthite, Plane Polars
• Muscovite and Chlorite, Plane Polars
• Fluorite
• Satinspar
• Phyllite, Plane Polars
• "Dunbar Marble": Mississippian limestone chock full of rugose corals
• Massanutten sandstone slab with trace fossils
• Wisconsin Red Granite
• Snowball Earth Educational Rock Sample Suite PFH-3
• Zoophycos
• Nelsonite
• Carters Grove West
• Serpentine Marble, Crossed Polars
• Basaltic Pumice
• Unknown sedimentary
• Unknown Sedimentary Rock
• The Golden Gate
• Parallel Roads of Glen Roy, Scotland
• Leptaena brachipod in fossiliferous limestone
• Lamprophyre dikes at Mather Gorge, Great Falls, Maryland
• View from Spruce Knob, looking south
• Unknown Sedimentary Rock Sample
• Bermuda "Pink Sand" Foram, 2580x
• Fuchsite
• Stromatolite from Namibia
• Pseudotachylyte
• Absaroka volcanic breccia
• Brallier Formation - Baker section 6
• Lycopsid bark
• Trilobite, Devonian of Morocco
• Laramie Range folds
• Komatiite, Barberton Greenstone Belt
• Tumbling Run
• Bloomsburg Formation sandstone
• Blastoid, side view
• Sand from Berufjörður, Iceland
• Old Red Sandstone, cliff at Dunbar, Scotland
• Gastropod at 2000x
• Tilted glacial outwash sediments
• Beach sand from Washington Oaks Garden State Park, Flagler County, FL
• Cathedral Formation Outcrop
• Dyed agate
• Encrinal Limestone, Plane Polars
• Cooling columns, Catoctin Formation, exposed at Indian Run Overlook, Skyline Drive, Shenandoah National Park, Virginia
• Folds in Upper Conococheague
• Amygdules in Catoctin Formation metabasalt
• Reticulite
• Graded bedding in the Martinsburg Formation
• Rockwell Formation diamictite
• Pyritized plant tissue from the Rockwell Formation diamictite
• Liesegang rings, Namibia
• Arkose
• Millboro Formation fossils
• Columnar stromatolite
• Slag from Britain used as ballast and then as road cobble in DC
• El Capitan Reef, West Side
• Pyrite
• Snowball Earth Educational Rock Sample Suite PFH-2
• Ghost boundaries in quartzite, crossed polars
• Thunderbird Rhyolite, Franklin Mountains, Texas
• Mariopteris
• Igneous Rocks Lab Sample G
• Sediment from Big Wash Trail in Honey Bee Canyon, Oro Valley, Arizona
• Folded and Cleaved Martinsburg Slate, Page County, Virginia
• Araucaria mirabilis cone
• Mineral Sample M
• Sedimentary Rocks Lab Sample F
• Shale
• Diptera tipulidae 2193b
• Metamorphic Rocks Lab Sample J
• Coleoptera 1030a
• Difficult Run Migmatite 1
• West Boothbay Harbor, Maine
• Graywacke, Plane Polars
• Corundum
• Porphyritic andesite from the Kibo Summit of Mt. Kilimanjaro, Tanzania
• Mitchem's Pit Close up
• Ultramylonite with well-developed foliation and lineation
• Diptera tipulidae 007a
• Natural Bridge, Canada 2
• Sedimentary Rocks Lab Sample B
• Apatite
• Epidosite, Plane Polars
• Volcaniclastic breccia from Mount St. Helens
• Confusion Hill medium-range outcrop #1
• Sedimentary Rocks Lab Sample L
• Fluorite, 3555x
• Crossbedded Red Sandstone with Lichen
• Mahantango limestone, crossed polars
• Grind of the Navir
• Sand from Calvert Cliffs State Park, Maryland
• Teredo, side view
• Fossil Quercus rihanna leaf
• Debris flow, Yoho National Park, British Columbia, Canada
• Volcanic Breccia, Plane Polars
• Drysdale Syncline as viewed from the Barberton GeoTrail
• Magnetite muscovite schist from Thoroughfare Gap
• Halite, 3455x
• Gabbro, Plane Polars
• Monkeypuzzle tree, Haupt Gardens, Smithsonian Castle, Washington, DC
• Folded metamorphic rocks exposed along the shore of Cabbage Island, Maine
• Coprolite
• Microbialite in banded iron formation
• Volcaniclastic Breccia from Mount St. Helens
• "Dunbar Marble": Mississippian limestone chock full of rugose corals
• Cushendun Conglomerate of the Cross Slieve Group, Cushendun, Northern Ireland
• Andalusite
• Marine Eugene Formation
• Columnar Jointing in Catoctin Formation
• Sedimentary Rocks Lab Sample W
• S3 spherulite layer in the Mapepe Formation, Fig Tree Group
• Scourie dike, Achmelvich Beach
• Chippewa Falls (Detail)
• Lunar Basalt Sample 12002, Plane Polars
• Physical Geology Mineral Lab Sample 10-2
• Veach Gap Anticline 2
• Glauconite sand
• Staurolite, Plane Polars
• Araucaria
• Dunite
• Garnet
• Halite
• Peridotite from the Josephine Ophiolite, Plane Polars
• Gooney Run Overlook, Shenandoah National Park
• Sediment from Fortune Head, Burin Peninsula, Newfoundland
• Aragonite with right-angle twinning
• Basalt, Plane Polars
• Slumped boulder (serpentinite colluvium), Marshall's Beach, San Francisco
• Basalt, Crossed Polars
• Sand from a Theater Sandbag
• Dolomite
• "Mississippi Valley" Outcrop - Sheep Mountain Anticline, Wyoming
• View west along the southern shore of northern Rathlin Island (from the Roonivoolin Trail)
• Dewatering structure (?)
• Giant fusulinids
• Weverton Formation atop Biscuit Mountain (Outdoor Lab)
• Diabeg Formation, Torridonian Group, North-West Highlands, Scotland
• Stromatolitic Bonahaven Dolomite, south of Bunnahabhain, Islay, Scotland
• Rutile, Crossed Polars
• Sillimanite in Sillimanite-Garnet Gneiss, Crossed Polars
• Looking into the Bow from Barrier Mountain
• Blueschist (medium-grained)
• Confusion Hill detail shot 2
• Volcaniclastic Breccia from Mount St. Helens
• Unakite, Plane Polars
• Helderberg Limestone, Corridor H, West Virginia
• Brallier and Chemung Formations, new New Route 55, West Virginia
• Conglomerate
• Drumadoon Sill
• Amygdular basalt
• Green quartzite
• Port Askaig Tillite
• View SSW from Duncan Knob, George Washington National Forest, Virginia
• Diptera tipulidae 638b
• Sedimentary Rocks Lab Sample N
• Diopside, Crossed Polars
• Disconformity, Hungary
• Sand from Portrush, Northern Ireland
• Climbing ripples in Millboro Formation shale
• Graptolite fossils, Martinsburg Formation
• Ronas Hill Granite, Shetland
• Chesapecten jeffersonius, state fossil of Virginia
• Graded bed in Martinsburg Formation turbidites, Peach Orchard Gap, Virginia
• Grand Canyon from Lipan Point
• Igneous Rocks Lab Sample L2
• Mauch Chunk sandstone, plane polars
• Martinsburg Formation, South Page Valley Road, Page County, Virginia
• Grundarfjörður and Kirkjufell, Snæfellsnes Peninsula, Iceland
• Cristo Rey Mountain
• Mudchip conglomerate w/ varying oxidation states
• Volcanic Breccia, Crossed Polars
• Muscovite, 2800x
• Old Red Sandstone, headland at Dunbar, Scotland
• Confusion Hill
• Columbia pluton
• Fern fossil, St. Clair, Pennsylvania
• Marine microfossils
• Augite, 3095x
• Rockslide in Gog Formation quartzite, trail to Helen Lake, Banff National Park, Alberta, Canada
• Massanutten sandstone slab with trace fossils (annotations only)
• Microcline
• Cleavage refraction in Konnarock Formation
• Living Stromatolites
• Imbricated gravels of the Salmon River, Idaho
• Passage Creek in flood
• Kyanite quartzite, plane polars
• Corumbella campground
• Euhedral Quartz, 3265x
• Sheared gabbro from Castel Odhair
• Graptolites, Dob's Linn, Scotland
• Torridonian Group, North-West Highlands, Scotland
• Walls Boundary Fault, Shetland
• Magnetite with Fayalite
• View over outcrops of the Buck Reef Chert
• Garnetiferous metagraywacke, Rock Creek Shear Zone, Washington, DC
• Fossils from the Rochester Shale
• Waterton Park - Crandell Mountain
• Peyto Lake, Banff National Park, Alberta, Canada
• Helen Lake stromatolites and Cirque Peak, Banff National Park, Alberta, Canada.
• Athabasca Glacier
• Graphite, 3330x
• Corona Heights Fault, San Francisco
• Orthoclase at 1825x
• Lake Scott, Kansas quadrangle
• Rockwell diamictite, crossed polars
• Mahantango Formation showing trace fossils, Fort Valley Road, Virginia
• Brecciated chert, Corona Heights Fault, San Francisco, California
• Beach sand from Montserrat, British West Indies
• Helderberg limestone, crossed polars
• Folded banded iron formation
• Alma, Wisconson-Minnesota
• Ashy sediment from Creek Trail in Sabino Canyon, Arizona
• Martinsburg Formation exposed at Staunton, Virginia
• Outsized clast (dropstone?) in Miette Group gritstone, southern Icefields Parkway, Banff National Park
• Sand from Crescent City Beach, Crescent City, California
• Klingle Valley metaconglomerate, Laurel Formation, Rock Creek Shear Zone, Washington, DC
• Zoisite
• Harpers Formation, Thoroughfare Gap, Virginia
• Martinsburg Formation graywacke
• Accretionary lapilli, Msauli Chert, Barberton Greenstone Belt, South Africa
• Diptera tipulidae 2227b
• Old Red Sandstone, cliff at Dunbar, Scotland
• Physical Geology Minerals Lab Sample Set 5
• Sediment from Myrtle Creek, Myrtle Beach, Del Norte County, California
• Coarse Sediment from Jenner, CA
• Gog Formation quartzite, Yoho National Park, British Columbia, Canada
• Laminated and faulted Tonoloway Formation
• S2 meteorite impact tsunami deposit, Barberton Greenstone Belt
• Keyser limestone, crossed polars
• Diptera tipulidae 007
• Sodium-Rich Plagioclase Feldspar
• Marine body fossils in Mississippian-aged Reynolds Limestone
• Kyanite quartzite
• Sykesville Formation, Chain Bridge Flats, DC
• Actinolite
• Contact between Fauquier Formation marble and Catoctin Formation greenstone, near Lime Kiln Road, Virginia
• Stigmaria
• Amazonite (Microcline)
• Fluorite
• View west from Woodstock Tower, Massanutten Mountain
• The Rock and Spindle, Kinkell Ness, Scotland
• Rockwell Formation concretion, side A
• Limy slate
• Fossil Stigmaria
• Clastic dike
• Neuroptera 1597a
• Granite pegmatite dike in diorite
• Gros Ventre Landslide - Kelly, Montana
• Anticline/Syncline Pair Patterson Creek Mountain Anticline WV55 North Side
• Striations in Eldon Formation, exposed near Athabasca Glacier.
• Brachiopods in sandstone, Pennsylvania
• Glacial cobble
• Chalcopyrite
• Hampshire Formation siderite concretion, plane polars
• Sand from Mesquite Flat Sand Dunes, Death Valley
• Hanging Rock Anticline, West Virginia
• Mineral Grains from a Herkimer Diamond Mine
• Footwall scarp, Thingvellir, Iceland
• Southern Pinnacle - Sheep Mountain Anticline, Wyoming
• Graywacke from the rock walls high above Siccar Point, Scotland
• S3 spherulite layer in Mapepe Formation, Fig Tree Group, Barberton Greenstone Belt
• Striped Rock Granite with fractured feldspars
• Diamictite of the Gaskiers Formation
• Snowball Earth Educational Rock Sample Suite PFH-1
• Graptolites from Dob's Linn, Scotland
• Pyrolusite
• Mistaken Point
• Skinner Butte Columns
• Klingle Valley metaconglomerate, Laurel Formation, Rock Creek Shear Zone, Washington, DC
• Sub-Torridonian unconformity, North-West Highlands, Scotland
• Archean conglomerate with detrital pyrite
• Metamorphic Rocks Lab Sample F1 and F2
• Internal mold of a clam
• Carbonatite dikes, Yoho National Park, British Columbia, Canada
• Portrush: hornfels (contact metamorphosed Lias shale) above Portrush gabbroic/doleritic sill
• Cushendun Conglomerate of the Cross Slieve Group, Cushendun, Northern Ireland
• Giant eurypterid trackway near St. Andrews, Scotland
• Rubified quartz of the Swift Run Formation
• Labradorite
• Hematite
• Hematite
• Catoctin metabasalt at Point of Rocks, Maryland
• Glacier on Mt. Stephen
• Folds in Edinburg Formation, Opequon Creek, Clarke County, Virginia
• Brachiopod from the Needmore Shale
• Lapilli from Mt. Etna
• Fold and Fault in the Amsden Formation on the eastern side of the Bighorn Mountains, Wyoming
• Passage Creek: not in flood
• Serpentine, Crossed Polars
• Folded turbidites at Saligo Bay, Islay, Scotland.
• Hanging Rock Anticline, east side
• Arkose
• Arkose, Plane Polars
• Tafoni-covered wall, Giant City State Park, Illinois
• Painted Wall, Black Canyon of the Gunnison National Park, Colorado
• Cirque Peak, Banff National Park, Alberta
• Chlorite schist
• Augite at 1965x
• Ulster White Limestone ("The Chalk"), Northern Ireland
• Snowball Earth Educational Rock Sample Suite PFH-4
• Granite with Mafic Xenoliths, Iceland
• Sediment from Andros Island, Bahamas, at high tide
• Patagonian turbidites, Chile
• Hueco Group anthill
• Beartooth Andesite
• Chancellor Group slate, Yoho National Park, British Columbia, Canada
• Sediment from Mt. Suswa, Kenya
• Bedrock Geology of Connecticut
• Diptera tipulidae 1714a
• Weathered basalt near West Light, Rathlin Island, Northern Ireland, U.K.
• Sheridan College dinosaur quarry, south of Buffalo, Wyoming
• Smaull greywacke turbidites exposed south of Saligo Bay, Islay, Scotland
• Eocene-aged fish from the Green River Formation
• Crinoid calyx
• Shell-rich horizon in Mahantango Formation
• Calcite
• Voltaire, North Dakota quadrangle
• Sykesville Formation, Chain Bridge Flats, DC
• Myvatn Overview from Dimmuborgir
• Sand from Al Habab, Dubai, UAE
• Native Copper
• Liesegang rings in jointed sandstone, Foreknobs Formation, Corridor H, West Virginia.
• Upper Contact, Purcell Sill
• Annotated folded Foreknobs, Gore, Virginia
• Fauquier Formation limestone, crossed polars
• Incipient Cleavage in Siltstone
• Brain coral
• Ronas Hill Granite, Plane Polars
• Northern Hueco Mountains Escarpment
• Chancellor Group slate, Yoho National Park, British Columbia, Canada
• Sand from Siesta Key, Florida
• Walker Top mylonite
• Fossil
• Ammonite in hornfels
• Clay shale
• Biotite Granite, Plane Polars
• Antietam Breccia 1
• Folds exposed at Riggins, Idaho
• Helderberg Formation chert, plane polars
• Fluvial and lahar deposits at Cold Springs, California
• Wide Holland Point
• Oriskany sandstone, plane polars
• Basalt
• Lunar Sample 12002 Thin Section of Basalt, Crossed Polars
• Mitchems Pit, Matthews County Virginia
• Fauquier Formation limestone, plane polars
• Epidotized fault contact between two gneisses
• Graded bed in Martinsburg Formation turbidites, Peach Orchard Gap, Virginia
• Apatite in Orthoclase
• Devonian Hampshire and lower Mississippian Rockwell Formations roadcut on Corridor H, West Virginia
• Platteklip Gorge, Table Mountain
• Signal Knob overlook
• Green ignimbrite
• Sediment from Tangalle, Sri Lanka
• Astrhelia palmata
• Paw Paw, West Virginia-Maryland quadrangle
• Sandstone roll-up feature in the Stac Fada Member of the Clachtoll Formation of the Stoer Group, North-West Highlands, Scotland
• Ammonites in contact-metamorphosed Lias, Portrush, Northern Ireland
• Cobble of amygdaloidal basalt from Precambrian-aged Castle Danger Formation
• Specular hematite
• Fossil Annularia and Mariopteris nervosa
• Gneissic xenolith in Scourie dike mafic rock
• Diopside with red and white calcite
• Fine Sediment from Rathlin Island, Northern Ireland
• Folds exposed at Riggins, Idaho (annotated #2)
• View south from Table Mountain toward Chapman's Peak and the Cape of Good Hope
• Sea stacks and sea bird nesting sites, north of West Lighthouse, Rathlin Island, Northern Ireland, U.K.
• Martinsburg Formation
• Laminated micrite
• Sykesville Formation, Chain Bridge Flats, DC
• Walls Boundary Fault, Shetland
• Allegheny Formation coal, plane polars
• Stac Fada member of the Clachtoll Formation
• Channeled Scabland with subaqueous gravel bars, Wilson Creek, Washington
• View toward Barite Valley
• Tonoloway Formation Faults (Close Up), Corridor H
• Brachiopods and bivalve mollusks
• Sediment from Crescent Bar, Washington
• Sand from the Strait of Gibraltar
• Beach cobbles at Dunbar, Scotland
• Stigmaria tree root fossil
• Fort Valley from Buzzard Rocks
• Harpers Formation, Harpers Ferry, West Virginia
• Sedimentary Rocks Lab Sample M
• Metamorphic Rocks Lab Sample L, one side view
• Wind River Canyon Wyoming
• Sedimentary Rocks Lab Sample E
• West Lobe Quarry, West Virginia
• Hornblende muscovite schist
• Little A Glacier and Boundary Glacier, near Icefield Centre, Icefields Parkway, Jasper National Park, Alberta
• Phyllite, Crossed Polars
• Rhyolite
• Rift at Þingvellir, Iceland
• Meteorite: Seymchan Pallasite
• Sedimentary Rocks Lab Sample I
• Giant's Causeway, Northern Ireland
• Therapod Tracks 2
• Sand from Valencia College, West Campus, Orlando, FL
• Roadcut Northwest of Bisbee, AZ
• "Madeira Point" on the Billy Goat Trail
• Chapman's Mill, Thoroughfare Gap, Virginia
• Native copper in Catoctin Formation metabasalt
• Giant's Causeway, Northern Ireland
• Cornwallis Cave, Yorktown Virginia
• Allegheny Formation chert, plane polars
• Brallier Formation near Deerfield, Virginia
• Fold
• Heliophylum halli calyx
• Stromatolites in Helena (Siyeh) Formation limestone from Alberta, Canada
• Dismembered, folded sandstone body from Corridor H, WV, plane polars
• Lamprophyre dikes on the Billy Goat Trail
• Coal Bed, Corridor H, West Virginia
• Sacagawea Peak from bioherms near the Thunderer, Bridger Range, Montana
• Hematite
• Rock Garden
• Sedimentary Rocks Lab Sample G
• Folds in Lewisian gneiss (weathered), Achmelvich, Scotland
• Sediment from Big Rocky Run, Centreville, Virginia
• Pemaquid Point, Maine
• Fish fossil from Green River Formation
• Rockfish Gap, Virginia
• Marine body fossils in Mississippian-aged Reynolds Limestone
• Lower Cretaceous Cloverly Fm. - Sheep Mountain Anticline, Wyoming
• Kilbourne Hole, detail C
• Fluid escape structure in MISS-dominated sandstones, Moodies Group
• Nautiloid in Mahantango Formation
• Mylonite, North-West Highlands, Scotland
• Tephra Blanket, Kilbourne Hole
• Martinsburg Formation exposed at Staunton, Virginia
• Igneous Rocks Lab Sample F
• Lamprophyre dikes on the Virginia side, visible from the Billy Goat Trail
• Helen Lake Stromatolite 4
• Slaty sandstone of Tickle Cove, Newfoundland
• Grind of the Navir
• Sedimentary Rocks Lab Sample V
• Flint
• Ultramylonite
• Sacagawea Cirque
• Ercall Quarry
• Pressure solution seams
• Rockwell Formation concretion, interior
• Kilbourne Hole, detail D
• Flame structures
• Chinese Hat, Galapagos
• Hell Creek Nirvana K/T boundary
• Sediment from Blackbird Caye, Turneffe Atoll, Belize
• Boudinage in Lewisian gneiss exposed near Durness
• Oriskany sandstone, crossed polars
• Mineral Sample Set L
• Gastropod-bearing agate ("Turitella agate") of the Green River Formation, Wyoming
• Barite with quartz and hematite on quartzite
• Talc, Plane Polars
• Cape Granite II
• Porphyry?
• Migmatite exposed at Sea Point, South Africa
• Nautiloid with melanterite
• Selenite
• Lincolnshire limestone, crossed polars
• Martinsburg Formation, South Page Valley Road, Page County, Virginia
• Calvert Formation, Scientists' Cliffs, Maryland (#6 of 8)
• Earthquake Lake Scarp - Hebgen Lake Road, Montana
• Harpers Formation, Harpers Ferry, West Virginia
• Folded turbidites at Saligo Bay, Islay, Scotland
• Metamorphic Rocks Lab Sample L, another side view
• K/T boundary. Gubbio #3
• Sediment from La Isla Verde, Puerto Rico
• Dolomite, 2940x
• Corona Heights Fault, San Francisco
• Graptolites, sp. Tetragraptus
• Rocky Islands from the towpath
• Paleoproterozoic gneiss, Clear Creek Canyon, Colorado
• Porphyritic vesicular basalt from Mt. Vesuvius
• The rift at Þingvellir, Iceland
• Kyanite quartzite, crossed polars
• Peridotite from the Josephine Ophiolite
• Ostracode and gastropod body fossils, Tonoloway Formation
• Wrinkly crenulation folds in marble
• Buffards Formation
• Granitoid dike from Clear Creek Canyon, Colorado
• Holy Cross, Colorado quadrangle
• Folds exposed at Riggins, Idaho (annotated)
• Reynolds Member of the Mauch Chunk Formation
• Sugarloaf Mountain quartzite
• Tourmaline
• Chambersville - Base of the Foreknobs Formation
• Ostracodes in Tonoloway Formation limestone
• Mahantango Formation, showing Zoophycos trace fossils
• Icelandic valley #2
• Folded gneiss
• Gowganda Tillite
• Millboro Formation shale, Route 33 near Brandywine, West Virginia
• West Sheep Canyon - Sheep Mountain Anticline, Wyoming
• Brallier and Lower Foreknobs-Baker Section 1
• Marble, Plane Polars
• Graywacke and tafoni weathering on sandstone, Ocean Beach, San Francisco, California
• Rocky Gap Run, Lake Habeeb, Maryland
• Stretched clasts in Laurel Formation metagraywacke, Rock Creek Shear Zone, Washington, DC
• Railroad cut, Linden, Virginia
• Purslane Formation Sandstone, Sideling Hill, Maryland
• Sea arch, southern Iceland
• Calcite
• Dias 360 - McMurdo Dry Valleys - Antarctica
• Pebble-bearing Massanutten Sandstone
• Wyler Aerial Tramway
• Opferkessel atop Old Rag Mountain
• Spherulitic felsite, Shetland
• Physical Geology Minerals Lab Sample 4
• Highland County, VA Mafic Intrusion
• Actinolite in Actinolite Schist, Crossed Polars
• The Backlimb - Sheep Mountain Anticline, Wyoming
• South Fort Valley Antiform
• Funzie Conglomerate, Fetlar, Shetland, U.K.
• Chromite olivine cumulate, Stillwater Complex, Montana
• Confusion Hill medium-range outcrop #5
• Magnetite-Rich Sand from Fort Funston Beach, San Francisco, CA
• Sediment from Big Run, Shenandoah National Park
• Kilbourne Hole, detail E
• Mahantango Formation, showing carbonate nodules
• Sediment from the Choptank Formation, Zone 13
• Fossils in Reynolds Limestone, Mauch Chunk Formation
• Folded turbidites of the Smaull Greywacke, Saligo Bay, Islay, Scotland
• Cincinattian limestone with bryozoan fossils
• Differential weathering
• Helen Lake stromatolites, Banff National Park, Alberta, Canada
• Plant fossil: gymnosperm
• Double unconformity at Beinn Garbh, North-West Highlands, Scotland
• Beach sand from the Big Island, Hawaii
• Martinsburg Formation, South Page Valley Road, Page County, Virginia
• Detail of Western Fold in the Large Rt 279 Outcrop, Bennington, Vermont, USA
• Barite horizon, Mapepe Formation of the Fig Tree Group
• Sediment from Torres del Paine, Chile
• Rodeo Beach Cliff
• Flat pebble conglomerate, Gros Ventre Formation
• Hampshire Formation redbeds, from a higher perspective
• Pteridinium from Farm Aar
• Foram from Andros Island, Bahamas, 3785x
• Graded carbonate beds
• Geologic map of the Williamsville, Virginia quadrangle
• Old Man of Hoy
• Chert
• Diptera tipulidae 2223a
• Glacial sculpting of basalt in Iceland
• L-S tectonite, Phoenix Mountains, Arizona
• Fig Tree Formation banded chert
• Heat-treated amethyst
• Pipe Rock, North-West Highlands, Scotland
• Rock Scramble at Old Rag Mountain, Virginia
• Yesnaby "Castle," western mainland Orkney, Scotland, U.K.
• Gibbsite in Bauxite
• Mauch Chunk Formation, showing Reynolds Limestone Member
• Microfiber in Chesapeake Bay Plankton Tow, 2940x
• Cross beds in komatiitic ash deposits
• Boudinaged tourmalines in Setters Schist, Maryland
• Metamorphic Rocks Lab Sample E
• Oriskany Fishing Hole
• Port Askaig Tillite
• Alethopteris
• Cross-bedding
• Marble
• Phlogopite
• Striarca fossil
• Prom?
• McKelligon Canyon
• Meteorite Northwest Africa 869
• Muscovite, Plane Polars
• Crazy Cat breccia
• Mammoth Cave, Kentucky quadrangle
• Granite
• Watern Cove
• Fossil Metasequoia and angiosperm
• The Leesburg Conglomerate at Ida Lee Park
• Snowball Earth Educational Rock Sample Suite TS-1
• Serpentinite breccia, North Anatolian Fault, Turkey
• Waldron, Arkansas quadrangle
• Fossils in the Martinsburg Formation
• Blastoid, Top View
• Sediment from Cape Henlopen State Park, Delaware
• Pseudocraters at Lake Mývatn, Iceland
• Hampshire Formation, Corridor H, West Virginia
• Rockwell Formation diamictite
• Park City, Kentucky quadrangle
• NEW New WV 55 fold belt 3
• Calvert Formation, Scientist Cliffs, Maryland (#5 of 8)
• Clastic dike in slaty sandstone, Tickle Cove, Newfoundland
• Nelsonite
• Folded turbidites at Saligo Bay, Islay, Scotland.
• Pseudocraters
• Diptera tipulidae 2380b
• Trilobite Pseudogygites, Ontario, Canada
• Rose quartz
• Calvert Formation, Scientists' Cliffs, Maryland (#8 of 8)
• Serpentinite from the Josephine ophiolite sequence
• Shenandoah Valley Overlook, Shenandoah National Park
• Faulted Massanutten Formation sandstone at the Talking Headwall
• Marble, Crossed Polars
• Antietam Formation
• Pink marble
• Foram from Hapuna Beach, Big Island, Hawaii, 3970x
• Sediment from Sandy Cove, Newfoundland and Labrador
• Hutton's Unconformity, Arran
• Igneous Rocks Lab Sample D
• Breccia in basalt
• Tuscarora sandstone, plane polars
• Malachite, Plane Polars
• Spherulitic felsite, Shetland
• Jefferson Rock #1, Harpers Formation, Harpers Ferry, West Virginia
• Metamorphic Rocks Lab Sample T
• Mylonitized pseudotachylyte, Pofadder Shear Zone
• Chert Nodule in Ulster White Limestone ("The Chalk")
• Passage Creek in Flood I
• Stretched beach cobbles, Funzie Bay, Fetlar
• Crazy Cat breccia
• Wall of Peninsula Formation Sandstone, Cape Supergroup, Table Mountain
• Dismembered, folded sandstone body from Corridor H, WV, crossed polars
• Sample from the Dead Sea, Israel
• Foram from Playa Rocosa De Piñones, Puerto Rico, at 3265x
• Rockwell Formation diamictite, exposed on Corridor H, West Virginia (second berm)
• Kaap Valley Pluton exposed along Queens River, Barberton Greenstone Belt, South Africa
• Thin Section of the Doushantuo Phosphorite
• Microbially induced sedimentary structures, Barberton
• Calvert Formation, Scientists' Cliffs, Maryland (#3 of 8)
• Calvert Formation glauconite sand
• Mudcracks in micrite
• Petrified wood
• Brallier Shale on NEW New WV 55 (version 2)
• Moine Thrust at Knockan Crag, North-West Highlands, Scotland
• Kirkjufell, Snæfellsnes Peninsula, Iceland
• Fossil Sphenophyllum
• Confusion Hill medium-range outcrop #3
• Olivine in Gabbro, Plane Polars
• Head of Wind River Canyon, Wyoming
• West Face - Sheep Mountain Anticline, Wyoming
• S-C fabric in schist, Dover Fault, Newfoundland
• Chlorite Slickensides, 3455x
• Physical Geology Mineral Lab Sample 10-11
• Folded gneissic banding, Billy Goat Trail, Maryland
• Darton Peak, WY
• Kink banding in Laurel Formation of Rock Creek Shear Zone, Broad Branch, Washington, DC
• Paleoproterozoic augen gneiss, Clear Creek Canyon, Colorado
• Ilmenite
• LIDAR Weverton Formation - Blue Ridge front, Virginia with geologic map overlay
• Evan Thomas Creek, showing flood deposits and erosion
• Storm deposit in glauconitic sandstone
• Calcite
• Grand Canyon View from Desert View Outlook
• Rockwell Formation diamictite from Sideling Hill
• Little ammonite
• K/T Boundary exposed at Gubbio, Italy
• Dickey Ridge Overlook, Shenandoah National Park
• Boudinaged tourmalines in Setters Schist, Maryland
• Amygdular basalt from Cornwall, Pennsylvania
• Coal and pyrite from the Carboniferous Period
• Veach Gap Anticline 1
• Semionotid fish (Triassic), Culpeper Basin, Virginia
• Permian red beds near Hutton's Unconformity, Lochranza, Arran
• Quartz-cemented breccia, Antietam Formation quartzite, western Blue Ridge, Virginia
• Brain coral
• Ocean jasper, Madagascar
• Glacial cobble
• Fine Sediment from Canoa Beach, Ecuador
• Sand Grain from Ocean Beach, San Francisco, California at 3955x
• Anticline/Syncline Patterson Creek Mountain Anticline WV55 BIG
• Fluorite
• Diopside, Plane Polars
• Cruziana trace fossils
• Diptera 248
• Dismembered, folded sandstone body from Corridor H, WV, plane polars
• Folded Cretaceous sediments of the Western Interior Seaway
• Weathered Sandstone
• (Potential) accretionary lapilli in mudrock
• Chromite olivine cumulate, Stillwater Complex, Montana
• Fossil Pecopteris
• Unknown Sedimentary Rock Sample
• Coarse Sediment from Canoa Beach, Ecuador
• Shear zone in gabbro
• Signal Knob Overlook, Shenandoah National Park
• Fucoid beds
• Patterson Creek Mountain Anticline 3
• Diopside
• Sahara Desert sand
• Crossbedded Fine Sandstone
• Sand from Ocean City, Maryland
• Looking west from Spruce Knob, West Virginia
• Euhedral calcite in Precambrian-aged basalt cobble
• Belemnoids
• Weverton Formation at Outdoor Lab (Biscuit Mountain)
• Cascade Canyon
• Tuscarora Formation quartzite, showing iron oxide staining
• Metamorphic Rocks Lab Sample Q
• Boudinaged tourmaline from the Setters Schist, Maryland
• Unconformity east of Portrush
• Brachiopod Body Fossils in the Ridgeley Sandstone, LaVale, MD
• Malachite, Crossed Polars
• Cristo Rey: Mesilla Valley Formation - contact with Campus Andesite
• Patagonian turbidites
• Metamorphic Rocks Lab Sample K2, Side View
• Ripple marks in Foreknobs Formation
• Microbially induced sedimentary structures, Barberton
• Contact between Fauquier Formation marble and Catoctin Formation greenstone, near Lime Kiln Road, Virginia
• Amphibolite from Great Falls, Maryland
• Schist
• Pseudotachylyte from Vredefort, with acrylic paint coat.
• Siccar Point, Scotland
• Ridgeley Sandstone
• Azurite and malachite
• Column at YMCA Camp Harrison, North Carolina
• Diptera tipulidae 846a
• Fauquier Formation and Backpack
• Confusion Hill detail shot 3
• Cristo Rey: Buda Formation - overturned syncline
• Vesuvius summit crater
• Metamorphic Rocks Lab Sample B
• Tempestite
• White chalcedony
• Sediment from below the wrack line on Playalinda Beach, Merritt Island, Florida
• Moldavite
• Laminated Shale, Plane Polars
• Sand fom Þorlákshöfn, Iceland
• Stac Fada member of the Clachtoll Formation
• Banded iron formation, Barberton Greenstone Belt, South Africa
• Foram from Hapuna Beach, Big Island, Hawaii, 2920x
• Naturebaths, Lake Myvatn region
• Helderberg limestones, Fort Valley Road, Virginia
• Folded, foliated xenoliths in granite
• Metamorphic Rocks Lab Sample D
• Slab of Massanutten Sandstone
• Tonoloway ostracode bed
• Cross-bedding in rounded cobble of pink quartzite
• Pillow basalts at Kirby Cove
• Marble Breccia, Crossed Polars
• Geologic Map of the Pennington Gap Quadrangle, Lee County, Virginia and Harlan County, Kentucky
• Sediment from Fiumefreddo, Sicily
• Fault breccia in Helderberg Group
• Bituminous coal
• Indian Ocean microconcretion
• Michigan Center, Michigan quadrangle
• Conococheague Formation exposed near Mulberry Run, Virginia
• Microbial sulfate reduction spots
• Gypsum from Zone 4 of the Calvert Formation, 5080x
• South lateral moraine, Athabasca Glacier (end-on view)
• Sandstone bed from within the Brallier Formation, Corridor H, West Virginia
• Blue Hole, Passage Creek, George Washington National Forest, Virginia
• Potassium feldspar
• Ignimbrite, Mt. Vesuvius, Italy
• Chesapeake Bay Plankton Tow, 3200x
• Sand from Perissa Beach, Santorini, Greece
• Fault scarp at Þingvellir
• Stromatolites, Helena Formation, near Crypt Lake, Waterton Lakes National Park, Alberta
• Geologic Map of the Devil Slide Quadrangle, Hot Springs County, Wyoming
• "Cub Sandstone" (Uppermost Martinsburg Formation), near Catherine Furnace, Virginia
• Sacagawea Peak from the south, halfway along the ridge toward the Thunderer, Bridger Range, Montana
• Serpentine
• Sediment from the Choptank Formation, Zone 13
• Encrinal Limestone, Crossed Polars
• Sediment from Accotink Creek, Fairfax, Virginia
• Buzzard Rocks
• Geologic Map of the Wind Gap Quadrangle, Northampton and Monroe Counties, Pennsylvania
• Red cross-beds (annotated)
• Thoroughgare Gap from Turner Road
• Amazonite in pegmatite 2
• Keyser limestone, plane polars
• Devonian coral
• Caliche from the Hueco Formation, West Texas
• Sedimentary features in the Conemaugh Formation, Corridor H, West Virginia
• Syncline Tension Gashes, Corridor H
• Garnet in Castner Marble, Franklin Mountains, West Texas
• Anticline / syncline pair, new New Route 55, west of Moorefield, West Virginia
• Graptolites
• Allegheny Formation coal, crossed polars
• Angular Unconformity, west of El Paso, Texas
• Rathlin Island Foram
• Rock Gypsum, Plane Polars
• Campus Andesite
• Serpentine, var. chrysotile
• Microbially-induced sedimentary structures, Barberton Greenstone Belt, South Africa
• Dolomite
• Thin Section of Deformed Quartzite with Small Pebbles
• "Dragon's Tongue" Outcrop, Corridor H, West Virginia
• Port Askaig Tillite
• Beach sand from Bell's Beach near Victoria, Australia
• Outcrop on Route 28 near Quincy, Washington
• Snowball Earth Educational Rock Sample Suite TS-12
• Calvert Formation, Scientists' Cliffs, Maryland (#4 of 8)
• Ex-aragonite seafloor cements
• NEW new WV 55 west of Moorefield anticline
• Vesicular basalt
• Unknown sedimentary sample
• Anorthite, Crossed Polars
• Extensional Shear Bands in Thin Section
• Anthony Gap
• Sediment from Moormans River, Virginia
• Muscovite
• "Leopard rock" with contact zone
• Argillaceous shale
• Hornblende schist
• Sand from Omaha Beach, Normandy
• Sand from The Bahamas
• Talc tremolite schist, crossed polars
• Conemaugh Group, Corridor H
• Staurolite, Crossed Polars
• Plaid Twinning in Microcline, Plane Polars
• Sediment from above the wrack line on Playalinda Beach, Merritt Island, Florida
• Chesapecten middlesexensis, interior
• Serpentinite with chrysotile hat
• Sand from Halls Lake, Ontario, Canada
• Sugarloaf LiDAR
• Tanytrachelos, from the Solite Quarry in the Dan River Basin, Virginia
• Grinnell Formation quartzite
• Giant ooids
• Kilbourne Hole 360, January 2009
• Porphyritic dike rock, Blackwaterfoot, Arran, Scotland
• Scleractinian coral
• Snowball Earth Educational Rock Sample Suite 17
• Sykesville Formation, Chain Bridge Flats, DC
• East Brownsville, Texas quadrangle
• Precambrian-Aged Castle Danger Amygdaloidal Basalt, Plane Polars
• Reynolds Limestone member of the Mauch Chunk Formation, Corridor H, West Virginia
• Graded bed in Martinsburg Formation turbidites, Peach Orchard Gap, Virginia
• Unknown Sedimentary Rock
• Tourmaline Schist, Plane Polars
• Healed break in hadrosaur bone
• Diabase sill/dike complex within Red Bluff Granite
• Sideling Hill (North Side), Maryland
• Fucoid Beds, North-West Highlands, Scotland
• Sand from Virginia Beach, Virginia
• Igneous Rocks Lab Sample N
• Triassic red beds, near Kildonan, Arran, Scotland
• Calvert Formation, Scientists' Cliffs, Maryland (#7 of 8)
• Pyrolusite
• Enstatite, Crossed Polars
• Sandstone blocks near Seneca Quarry, Maryland
• Chesapecten middlesexensis
• Stephen / Eldon formational contact, Yoho National Park, British Columbia, Canada
• Just a cool rock.
• Harpers Formation at Jefferson Rock, Harpers Ferry, West Virginia
• Crepidula
• Microbially-induced sedimentary structures in Stoer Group siliciclastics, Clachtoll, North-West Highlands, Scotland
• Magnetite
• Porphyry, Kinkell Ness, Scotland
• Bryozoan-rich limestone
• Hornblende
• Pool at Hofsos, #2
• Portrush Sill, view #2
• Actinolite in Quartz
• Travertine at Tumbling Run
• Tremolite in quartzite
• Sediment from the Leiðarendi Lava Tube, Iceland
• Helen Lake Stromatolites 3
• Spherulitic felsite, Shetland
• Albite
• Amygdules from Precambrian-aged Castle Danger Basalt
• Sea Urchin Spine, Sandy Cove, Newfoundland, 3175x
• Waterfall Formation boulder
• "Diamond in the Rough" outcrop of Hampshire Formation, Corridor H, West Virginia
• LS tectonite, Phoenix Mountains, Arizona
• Epidosite, Crossed Polars
• Conococheague Formation exposed near Mulberry Run, Virginia
• Rounded cobble of intrusion breccia
• Mount Tom, California quadrangle
• Greenops boothi (?) trilobite pygidium
• Chapman's Mill, Thoroughfare Gap, Virginia
• Brecciated Antietam Formation
• Sediment from Satellite Beach, Florida
• Lunar Breccia Sample 65015, Crossed Polars
• Foram from La Isla Verde, Puerto Rico, 2850x
• Jasper
• Garnet-Rich Purple Sand, Pfeiffer Beach, Big Sur, CA
• Lava Lake, Montana
• Slate, Crossed Polars
• Sand from Zatoka, Odessa Oblast, Ukraine
• Sediment from Pfeiffer Beach, California
• Enstatite
• Weverton Formation exposed at Thoroughfare Gap, Virginia
• Strained trilobite
• Basement complex, MP 16.3 on I-66 (westbound), east of Linden, Virginia
• Gypsum variety Alabaster
• Olivine at 3095x
• Bituminous shale
• Chapman's Mill, Thoroughfare Gap, Virginia
• Stromatolite from Namibia
• Coprolite?
• Soft Sediment Deformation in Castner Marble, Franklin Mountains, West Texas
• Olivine-rich sand from Ka Lae, Hawai'i
• Metamorphic Rocks Lab Sample N
• Goðafoss; lower gorge, Iceland.
• Grand Canyon - Hopi Point Overlook 180 Degree Panorama View
• Helen Lake stromatolites, Banff National Park, Alberta, Canada
• Pine Butte, Montana
• Ecphora gardnerae, interior view
• Permian Tuff of St. Gertrude, near Cottonwood, Idaho
• Martinsburg Formation, Millner Road and Bethel Road, Shenandoah County, Virginia
• Amethyst
• Calcite precipitated on aquarium gravel
• Microbially induced sedimentary structures and fluvial conglomerate, Barberton
• Scoria
• Sphenopsids
• Gneiss from Clear Creek Canyon, Colorado
• Trilobite Elrathia kingi
• Amphibolite exposed on the Billy Goat Trail, Great Falls, Maryland
• Fossil Asterophyllites equistiformis
• Tiny faults and folds
• Margin of a Scourie dike (contact w/ host rock: Lewisian gneiss)
• Amphibolite from Clear Creek Canyon, Colorado
• Portrush: hornfels (contact metamorphosed Lias shale) above Portrush gabbroic/doleritic sill
• Tuff, plane polars
• Sand from the Atlantic Ocean at Kure Beach, North Carolina
• Konnarock Formation rhythmites
• Ronas Hill Granite, Crossed Polars
• Mylonite, North-West Highlands, Scotland
• Belle Isle and James River Park, Richmond, Virginia
• Gastropod duplex w/ people for scale
• Fossiliferous Limestone, Crossed Polars
• Passage Creek in flood
• Tuscarora sandstone, crossed polars
• Graptolites
• Sediment from Tickle Cove, Bonavista Peninsula, Newfoundland and Labrador
• Quartz
• Redfieldius
• Hibriten Mylonite
• Dolomite, Plane Polars
• Aquia Creek Sandstone
• Zoophycos trace fossils in Mahantango Formation
• Pressure solution in Eldon Formation limestone exposed on roche moutonee east of Athabasca Glacier, Jasper National Park, Alberta
• Cushendun Conglomerate of the Cross Slieve Group, Cushendun, Northern Ireland
• Sphalerite, Plane Polars
• Differential Weathering, Sideling Hill, Maryland
• Fault breccia
• Marble breccia
• Antiform in Mather Gorge Formation
• Meteorite Northwest Africa 869, cut face
• "Geologic provinces of northern Virginia" display
• Bloomsburg, Mifflinsville, and Catawissa County Quadrangles, Columbia County, PA
• Breccia in Antietam Formation, Swift Shoals
• Setters Schist
• Martinsburg Formation, South Page Valley Road, Page County, Virginia
• Slate, Plane Polars
• Sediment from Black Sands Beach, Marin County, CA
• Massanutten Sandstone exposed at Red Hole on Passage Creek
• Carbonatite dikes cutting across Chancellor Group slate, Yoho National Park, British Columbia, Canada
• Small-scale detachment fold in Foreknobs Formation
• Black Sea Foram, 2490x
• 15BSK005
• Evaporite texture in Tonoloway Formation
• Dolomitic limestone
• Talc tremolite schist, plane polars
• Graphite Schist, Crossed Polars
• Tilted, folded, intruded metamorphic rock, Clear Creek Canyon, Colorado
• Sedimentary Rocks Lab Sample Q
• Two views of Giant City State Park, Illinois
• Anorthite
• LS tectonite, Phoenix Mountains, Arizona
• Boudin mouth and neck, Lewisian gneiss exposed east of Durness, Scotland
• Huckleberry Ridge Tuff, Madison Valley, Montana
• Chlorite Schist, Crossed Polars
• Pool at Hofsos, Iceland
• Siliceous Oolite, Crossed Polars
• Felsic intrusion with xenoliths
• Hampshire Formation, showing channel forms in cross section
• Unidentified unconformity
• Microbially-Induced Sedimentary Structures, Stoer Group, Clachtoll, Scotland, Plane Polars
• Vulcano, Aeolian Islands, Italy
• Satinspar
• Coarse ooids
• Helen Lake stromatolites, Banff National Park, Alberta, Canada
• Fossiliferous limestone
• Wilson Hall, Bluestone Limestone, James Madison University
• Amygdules in Catoctin Formation
• Calcite, 3095x
• Orthoclase (Potassium Feldspar)
• Rutile exsolved on biotite
• Paleovalley in the Stoer Group / Lewisian Gneiss unconformity surface.
• Hedinsfjörður, between the two big tunnels on Tröllaskagi Peninsula, Iceland
• Porphyritic Andesite, Crossed Polars
• Serpentine
• Storm deposits in Tonoloway Formation limestone
• Halite casts
• Pteridinium from Farm Plateau (Aar)
• Bell Canyon/Rader Slide Roadcut
• Hornblende, 1950x
• Crepidula
• Calvert Formation, Scientists' Cliffs, Maryland (#1 of 8)
• Mechum River Formation meta-diamictite
• Graywacke, Crossed Polars
• Diatoms on a Grain of Sand from Scientists' Cliffs, Chesapeake Bay, Maryland at 2800x
• Tanytrachelos, from the Solite Quarry in the Dan River Basin, Virginia
• Miette Group graded bedding
• Folds and Faults in Foreknobs, Bergton, Virginia
• Point Bar
• The nascent NOVA Annandale rock garden, as of May 2012
• Frank Slide, Alberta, Canada
• Mudcracks at Höfn, Iceland
• Rift Valley, Iceland
• Rutile

Public Collections

• Sediment
• Landscapes
• Rivers
• Structural Geology
• Oceans and Coasts
• Minerals
• Metamorphic Rocks
• Collections
• Thin Sections
• Meteorites
• Triassic Period
• Unconformities
• Scotland
• Foraminifera
• Hand Samples
• Paleobotany
• Paleozoic Era
• Coastal Maine
• Outcrops
• Mesozoic Era
• Anthropocene
• Thoroughfare Gap, Virginia
• Ediacaran Period
• El Paso, Texas
• Fossils
• Specimens from the Virginia Museum of Natural History
• Geologic Maps
• Shenandoah National Park
• Unknown Sedimentary Samples for Lab/Quiz
• Neogene Period
• Building Stones
• Scanning Electron Micrographs
• Foreknobs Formation
• Iceland
• Igneous Rocks
• Martinsburg Formation
• Ordovician Period
• Permian Period
• Devonian Period
• Silurian Period
• Relative Dating
• South Africa
• Valley and Ridge Province
• Jurassic Period
• Primary Sedimentary Structures
• Western Chesapeake
• Glaciers
• Miette Group
• Culpeper Basin
• Proterozoic Eon
• Phanerzoic Eon
• Karst and Travertine
• Northern Ireland
• Paleogene Period
• Newfoundland and Labrador
• Sedimentary Rocks
• K/PG (K/T) Boundary
• Catoctin and Swift Run Formations
• Maps
• Wind River Canyon, Wyoming
• Annotated GigaPans
• MT / WY Rockies
• Calvert Cliffs and Scientists' Cliffs
• Billy Goat Trail, Great Falls, Maryland
• Clear Creek Canyon, Colorado
• Channeled Scablands, Washington
• Stromatolites
• Mid-Atlantic Geo-Image Collection
• Chilhowee Group
• Carboniferous Period
• Appalachian Plateaus Province
• Mass Wasting
• Canadian Rockies
• Weathering
• Coastal Plain Province
• Cenozoic Era
• Archean Eon
• Cambrian Period
• Piedmont Province
• Blue Ridge Province
• Corridor H
• Massanutten, Tuscarora, and Shawangunk Formations
• Snowball Earth
• Cretaceous Period