magic-gigapans

Public Images

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