magic-gigapans

Northern Virginia Community College

Annandale, VA

Public Images

Unakite
Unknown Sedimentary Rock Sample
Stac Fada member of the Clachtoll Formation
Martinsburg Formation, South Page Valley Road, Page County, Virginia
Arkose, Crossed Polars
Klingle Valley metaconglomerate, Laurel Formation, Rock Creek Shear Zone, Washington, DC
Therapod Tracks
South lateral moraine, Athabasca Glacier (end-on view)
Talc, Crossed Polars
Contact between Tensleep Formation and Goose Egg Formation, east of Shell, Wyoming
Calvert Formation, Scientists' Cliffs, Maryland (#2 of 8)
Microbially induced sedimentary structures and fluvial conglomerate, Barberton
Sedimentary Rocks Lab Sample L
Sand from Mesquite Flat Sand Dunes, Death Valley
Stretched belemnite fossil, Swiss Alps
Georgetown Intrusive Suite, Rock Creek Park, Washington, DC
North Palisade, California
Overlook from High Point Mountain- April 9th 2012
Grind of the Navir
Graphite
Chancellor Formation slate, near Yoho National Park, British Columbia, Canada
Fluid escape structure in MISS-dominated sandstones, Moodies Group
Pseudotachylyte from Vredefort, with acrylic paint coat.
Palmyra, New York quadrangle
Chesapecten middlesexensis
Sandstone with Calcite Cement, Crossed Polars
Hutton's Unconformity on the Isle of Arran
Conglomerate as countertop, on display in Berryville, Virginia
View toward Barite Valley
Satinspar
Bryozoans in Madison Formation Limestone
Scenic Drive Formation fossil layer
Massanutten Sandstone
Detail of Western Fold in the Large Rt 279 Outcrop, Bennington, Vermont, USA
Icelandic valley #2
North Attleboro PetSmart Outcrop - View 1
The French Thrust, Sun River Canyon, Montana
Sand from Virginia Beach, Virginia
Boudinaged tourmalines in Setters Schist, Maryland
Pyroxenite
Fossil Fish
Diopside, Crossed Polars
"Bookshelfing" style boudinage
Zoophycos
(Annotated) laminated and faulted Tonoloway Formation
Geologic map of the Williamsville, Virginia quadrangle
Sand from the Base of St. Mary's Glacier, Colorado
Microbially-induced sedimentary structures, sandstone, Barberton Greenstone Belt, South Africa
Rutile, Crossed Polars
Martinsburg Formation exposed at Staunton, Virginia
Meteorite: Seymchan Pallasite
Diorite, Crossed Polars
View southwest across Church Bay, Rathlin Island, Northern Ireland
Stromatolites in driveway, Thunder Bay Ontario
Grind of the Navir
Cretaceous strata at Swift Dam
Chancellor Group showing deformation, Yoho National Park, British Columbia, Canada
Augen gneiss
Mineral Sample J
Stromatolites, Helena Formation, near Crypt Lake, Waterton Lakes National Park, Alberta
Sediment from Loch Assynt, NW Highlands, Scotland
Mineral Sample K; Metamorphic Rocks Lab Sample M
Trilobite Elrathia kingi
Coal
Rockwell Formation diamictite
Mineral Sample I
Tuff, plane polars
Mt. Stephen, Yoho National Park, Canada
Marine body fossils in Mississippian-aged Reynolds Limestone
Strophomenid brachiopods
Lepidodendron
West Lobe Quarry, West Virginia
Port Askaig "Tillite" (Diamictite), Islay, Scotland
Quartz: variations on a theme
El Capitan Reef, West Side
Igneous Rocks Lab Sample D
Sample D
Bishop Tuff F2 Ashfall
Geopetal fossils in Limestone
Stromatoporoid
Stac Fada member of the Clachtoll Formation
Ammonites in contact-metamorphosed Lias, Portrush, Northern Ireland
Wall of Makanda Sandstone, Giant City State Park, Illinois
Stretched clasts in Laurel Formation metagraywacke, Rock Creek Shear Zone, Washington, DC
Trace fossils in green siltstone
Polysynthetic Twinning in Albite, Plane Polars
Sedimentary Rocks Lab Sample F
Sahara Desert sand
Columnar Jointing in Catoctin Formation
Slaty sandstone of Tickle Cove, Newfoundland
Recumbent anticline in the Edinburg Formation, Page County, Virginia
Stromatolites, Helena Formation, near Crypt Lake, Waterton Lakes National Park, Alberta
Chippokes Plantation, near visitor center
Confusion Hill detail shot 3
Closer look at the K/T Boundary. Gubbio, Italy
Disaggregated Sediment from the Choptank Formation, Zone 13
Arctomys siltstone and shale, southeast of Cirque Peak, Banff National Park, Alberta, Canada
Columbia pluton
Glossopteris
Diptera tipulidae 2026
Astrhelia palmata
Augen Gneiss, Plane Polars
Unknown Sedimentary Rock Sample
Curwensville Reservoir
Native Copper
Diptera tipulidae 007
Chapman's Mill, Thoroughfare Gap, Virginia
Diptera tipulidae 846a
Petrified wood
Porphyritic vesicular basalt from Mt. Vesuvius
Sediment from Lake Ashi, Kanagawa Prefecture, Japan
Sediment from Montara State Park, California
Fold
The Fossil Forest, near Lulworth Cove, Dorset
Galena
Siltstone
Sediment from Port Charlotte, Islay, Scotland
Anorthite, Crossed Polars
Channel forms and clinoforms in the Hampshire Formation
Helen Lake stromatolites, Banff National Park, Alberta, Canada
Serpentinite with chrysotile hat
Unconformity near Portrush, Northern Ireland
Miette Group slate, Trans-Canada Highway and Icefields Parkway junction, Banff National Park
Paleoproterozoic gneiss, Clear Creek Canyon, Colorado
Buda Formation fold
Sand from the Delaware River, Delaware
Fusulinid-bearing Hueco Limestone from West Texas
Sediment from Ten Mile Dunes, Ft. Bragg, California
Rock Wall, Fetlar, Shetland
Sand Grain from Kirby Cove, Marin Headlands, California at 3425x
Calvert Formation, Scientists' Cliffs, Maryland (#6 of 8)
Corundum
Red Bluff Granite
Olivine
"Dunbar Marble": Mississippian limestone chock full of rugose corals
Pemaquid Point, Maine
Coccoliths and a Coccolithosphere in Classroom Chalk, 5245x
The Quake Lake Slide - Hebgen Lake, Montana
Meta-diamictite of the Mechum River Formation, Sharp Top, Virginia
Red Hole, Passage Creek, George Washington National Forest, Virginia (#1 of 2)
LiDAR view of the Northern Fort Valley and Massanutten Mountain
Devonian Shale (#1), South Branch of the Potomac River, West Virginia
Castner Marble
Sediment from North Clear Creek, Colorado
Flat pebble conglomerate, Gros Ventre Formation
Passage Creek in flood
Boudin mouth and neck, Lewisian gneiss exposed east of Durness, Scotland
Physiography of the central Appalachians
Metatuff from the Catoctin Formation, South Mountain, Maryland
Sedimentary Rocks Lab Sample Y
Amphibolite from Clear Creek Canyon, Colorado
Brachiopods and crinoid stems in Mississippian-aged Reynolds Limestone
Sediment from the Great Rift Valley, Kenya
Cobble of amygdaloidal basalt from Precambrian-aged Castle Danger Formation
Kyanite quartzite, plane polars
Stretched belemnite fossil, Swiss Alps
Sediment from the Choptank Formation, Zone 13
Crinoid columnal horizon
Pseudocraters
Fossil Quercus rihanna leaf
Waterton Park - Crandell Mountain
Trezona Formation Stromatolites
Confusion Hill
Calvert Formation, Scientists' Cliffs, Maryland (#1 of 8)
Kaolinite
Salterella Grit, North-West Highlands, Scotland
S-C Mylonite
Sediment from Wicklow Beach, Ireland
Mineral Sample O
Pool at Hofsos, #2
Agglomerate, Eshaness, Shetland, U.K.
Pink marble
Castile Fm. Evaporites
Martinsburg Formation, South Page Valley Road, Page County, Virginia
"Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
Plate breccia
Pseudotachylyte
Sand from the Atlantic Ocean, Point Smith, New York
Helen Lake stromatolites, Banff National Park, Alberta, Canada
Fossil snails in Reynolds Limestone
Glauconite sand
Mt. Kidd, Kananaskis Trail, Alberta, Canada
Patuxent River Sediment at 3035x
Plant fossils in the Allegheny Formation
Banded Iron Formation
Augen Gneiss, Crossed Polars
Sedimentary Structure?
Rutilated quartz with ilmenite
Biotite
Gypsum, var. Alabaster, Plane Polars
Diptera tipulidae 2380a
Sand from Portrush, Northern Ireland
Foram from Punta Uva, Puerto Viejo, Limon, Costa Rica, 4295x
Dolomite
Margin of a Scourie dike (contact w/ host rock: Lewisian gneiss)
Wide Holland Point
Harpers Formation exposed at Glasscock Gap, Virginia (Outdoor Lab)
Walls Boundary Fault, Shetland
Gros Ventre Landslide - Kelly, Montana
Snowball Earth Educational Rock Sample Suite AB-1
Kilbourne Hole, detail A
Waterfall along the eastern edge of Þingvellir, 75%
Sediment from the Calvert Formation, Zone 4
Cairn Formation, Bow River Parkway, Banff National Park, Alberta, Canada
Teredo, side view
Portrush: hornfels (contact metamorphosed Lias shale) above Portrush gabbroic/doleritic sill
Giant ooids
Trilobite Elrathia kingi
Rift zone at Þingvellir, Iceland
Gigantoproductus giganteus fossils in Permian limestone, Arran, Scotland
Rockwell Formation diamictite, plane polars
Conglomerate
Grain from Suromar Rio, Naguabo, Puerto Rico, 3015x
Coarse Sediment from Rathlin Island, Northern Ireland
Sand from Muir Beach, Marin County, California
Chambersville - Base of the Foreknobs Formation
NEW New WV 55 fold belt 3
Cristo Rey: Buda Formation - Fossils in the quarry
Siccar Point, Scotland
Ripple marks and phyllitic sheen in Miette Group slate, Icefields Parkway and Trans-Canada Highway, Banff National Park
Lewisian gneiss with cross-cutting dikes
Crossbedded Fine Sandstone
Microbially-induced sedimentary structures in Stoer Group, Clachtoll, Scotland
Glycymeris trio
Pseudotachylyte from Asbestos Mountain, California, Crossed Polars
Granite pegmatite dike in diorite
Pressure solution seams
Shark Bay 1
Pisolith-rich Grainstone, Tansill Formation(?), Whites City, New Mexico
Siliceous Oolite, Crossed Polars
Fluorite
Sand from the Hudson River at Stuyvesant, New York
Page Valley, Virginia
Native copper in Catoctin Formation metabasalt
Brain coral
Massanutten Sandstone exposed on Fort Valley Road
Wavellite on quartzite
Silurian-aged mudcracks
Calcite
Castner Marble roadcut in Franklin Mountains
Confusion Hill detail shot 2
Cristo Rey: Mesilla Valley Formation - contact with Campus Andesite
Microbially induced sedimentary structures, Barberton
Indiana limestone at the Duke Ellington Bridge, Washington, DC
Labradorite
Foreknobs Formation - Baker section 4
Basal Cambrian burrows
Pseudotachylyte from Vredefort, South Africa
Pope's Head Formation showing cross bedding on the plane of foliation
Corona Heights Fault, San Francisco
The Hogback Hoodoo - Sheep Mountain Anticline, Wyoming
Ronas Hill Granite, Plane Polars
Bituminous coal
Rugose coral
Chromite olivine cumulate, Stillwater Complex, Montana
Crepidula
Rugose corals
Glacial cobble
Painted Wall, Black Canyon of the Gunnison National Park, Colorado
Microbially induced sedimentary structures, Barberton
El Paso Arroyo
Beryl
Kuruna clast with stromatolite
Neuroptera 1597a
Bergton Thrust Fault - Greenland Gap Group
Unconformity east of Portrush, Northern Ireland
Sediment from Blackbird Caye, Turneffe Atoll, Belize
Plant fossil: gymnosperm
Phyllite with garnet
Passage Creek NOT in flood
Calvert Formation, Scientists' Cliffs, Maryland (#3 of 8)
Weathered and jointed ignimbrite, Grind of the Navir, Shetland
Stigmaria tree root fossil
Sand from the Strait of Gibraltar
Pipe Rock, North-West Highlands, Scotland
Graded bedding in the Mechum River Formation, Sharp Top
Dike in diabase
Coleoptera 1030a
Metamorphic Rocks Lab Sample O
Heliophylum halli calyx
Meta-komatiite
Igneous Rocks Lab Sample L1
Passage Creek in flood
Meta-ignimbrite of the Catoctin Formation
Bedding / cleavage relationships in Chancellor Group slates, Yoho National Park, British Columbia, Canada
S3 spherulite layer in the Mapepe Formation, Fig Tree Group
Coastal ecology, West Boothbay Harbor, Maine
Limestones near Carlsbad, New Mexico
Anticline / syncline pair, new New Route 55, west of Moorefield, West Virginia
Amethyst
Conococheague Formation exposed near Mulberry Run, Virginia
Chief Mountain, Montana
Cross-bedding
Dismembered, folded sandstone body from Corridor H, WV, crossed polars
Healed break in hadrosaur bone
Port Askaig Diamictite, Islay, Scotland
Sediment from Ocean Beach, San Francisco, California at 3125x
Magnesium Dendrites
Tonoloway Formation Faults (Wide View), Corridor H, West Virginia
Sand from Lake Erie at Ashtabula, Ohio
Passage Creek in flood
Chromite olivine cumulate, Stillwater Complex, Montana
Coiba Mica - Coiba Mare cave system (here is the Coiba Mare entry), Apuseni Mountains, Transylvania, Romania
Sedimentary Rocks Lab Sample J
Hematite
Citrine
Rock salt (halite) from the Dead Sea, Israel
Brallier Shale on NEW New WV 55 (version 2)
Sheared gabbro from Castel Odhair
Portrush: hornfels (contact metamorphosed Lias shale) above Portrush gabbroic/doleritic sill
Sedimentary Rocks Lab Sample N
Tiny faults and folds
Diptera tipulidae 2227b
Conglomerate of Cerro Toro Formation, Chilean Patagonia
View over paleotopography below the Buck Reef Chert
Rockwell Formation concretion, side A
Basaltic Pumice
Glacial cobble
Mudcracks
Unknown Igneous Rock Sample
Sediment from Tennessee Valley Beach, California
Microbially-induced sedimentary structures in Stoer Group siliciclastics, Clachtoll, North-West Highlands, Scotland
Curwensville Reservoir
Klingle Valley metaconglomerate, Laurel Formation, Rock Creek Shear Zone, Washington, DC
Mineral sample D
Walls Boundary Fault, Shetland
Diptera 2043a
Proterozoic basement rock, Clear Creek Canyon, Colorado
Mylonite at Corrie Sands, Islay, Scotland
Mineral Sample Set L
Snowball Earth Educational Rock Sample Suite TS-15
Helderberg Limestone, Corridor H, West Virginia
Faults, near Guadalupe Mountains National Park
Coelacanth tail fossil from the Solite Quarry, Dan River Basin, Virginia
El Paso Texas and Cd. Juarez Mexico
Pillow basalt from Thetford Ophiolite, Quebec, Canada
Rockwell Formation diamictite, plane polars
Solution seam sample
Hornblende
Rugose coral calyces
Shoshone Canyon - Cody, Wyoming
Carlin Canyon Unconformity
Dickey Ridge Overlook, Shenandoah National Park
Mahantango Formation
Ilmenite
Fuchsite
Two views of Giant City State Park, Illinois
Epidosite, Plane Polars
Sheridan College dinosaur quarry
Echinoid
Reynolds Limestone member of the Mauch Chunk Formation, Corridor H, West Virginia
Tourmaline Schist, Plane Polars
Mahantango Formation showing trace fossils, Fort Valley Road, Virginia
Sediment from Sandy Cove, Newfoundland and Labrador
Sediment Deposited by Hurricane Camille, Nelson County, Virginia
Hanging Rock Anticline, east side
Grand Canyon from Pima Point
Sediment from Tangalle, Sri Lanka
Diamond fossils in limestone
Amygdules in Catoctin Formation meta-basalt
Flame structures
Ripple marks in Foreknobs Formation
Microfiber Pollution in Sediment from Sandy Cove, Newfoundland and Labrador
Rt. 50 cut, Mt. Pleasant Syncline, east limb lower section
Diorite, Crossed Polars
View east over paleotopographic relief at the base of the Buck Reef Chert
NEW new WV 55 west of Moorefield anticline
Outcrop of upturned Paleozoic strata on Highway 16
Sediment from Glass Beach, Ft. Bragg, California
Upper Gypsum Springs Formation - Sheep Mountain Anticline, Wyoming
Stutfield Glacier, Jasper National Park, Alberta, Canada
Port Askaig Diamictite, Islay, Scotland
Andalusite
Marble
Feeder trace fossils
Metamorphic Rocks Lab Sample T
Sand from Crescent City Beach, Crescent City, California
Folded Tonoloway, Looking South. 8-22-12
"Pocket Sand" from the Ace of Diamonds Mine, Herkimer, New York
Igneous Rocks Lab Sample J
Precambrian-Aged Castle Danger Amygdaloidal Basalt, Crossed Polars
Diptera 248
Ignimbrite from Berufjörður, Iceland
Foreknobs Formation- Hunting Ridge 2
Antiform in Mather Gorge Formation
View over outcrops of the Buck Reef Chert
Diptera tipulidae 2223a
Serpentinite breccia, North Anatolian Fault, Turkey
Marine microfossils
Faulted granite dike, Rock Creek Park, Washington, DC
Crossbedded Red Sandstone with Lichen
Sediment from Satellite Beach, Florida
Millboro Formation carbonate nodule
Pisolites in Tansil Formation limestone, Whites City, New Mexico
Beekmantown Group Limestone, Harrisonburg, Virginia
Icefield Centre, Jasper National Park, Alberta, Canada
Blastoid, top view
Spring Forest, Skyline Drive, Shenandoah National Park
LS tectonite, Phoenix Mountains, Arizona
Metamorphosed, boudinaged bedding of the Mather Gorge Formation
Precambrian / Cambrian Unconformity, Ogofgolchfa
Satinspar
Laramie Range folds
Ronasvoe and Ronas Hill, Shetland
Folds in the Catoctin Formation
Sand fom Þorlákshöfn, Iceland
Augen gneiss, Transition Zone, Shetland
Bermuda "Pink Sand" Foram, 1825x
Beach sand from Montserrat, British West Indies
Porphyry, Kinkell Ness, Scotland
Tremolite, 2940x
Soft Sediment Deformation in Castner Marble, Franklin Mountains, West Texas
Catoctin amygdules
Looking West - Sheep Mountain Anticline, Wyoming
Diptera tipulidae 043
Dike contact exposed at Kildonan, Arran, Scotland
Sediment from L'Anse aux Meadows, Newfoundland
Miette Group Outcrop Ellipsoid
Anticline in Veach Gap
Sheridan College dinosaur quarry, south of Buffalo, Wyoming
Sand from Jumeira Beach, Dubai, UAE
Crazy Cat breccia
Martinsburg Formation, South Page Valley Road, Page County, Virginia
Sedimentary Rocks Lab Sample I
Contact between Fauquier Formation marble and Catoctin Formation greenstone, near Lime Kiln Road, Virginia
Komatiite, Barberton Greenstone Belt
Confusion Hill medium-range outcrop #2
Kimberlite from Barkly West, South Africa
Rockwell Formation diamictite
Mylonite, North-West Highlands, Scotland
Pillow basalts, Snæfellsnes Peninsula, Iceland
Proterozoic basement rock, Clear Creek Canyon, Colorado
Dalradian phyllite from Trondra, Shetland
Column at YMCA Camp Harrison, North Carolina
Kilbourne Hole, detail E
Dunite
Duplex Structure in the Gastropod Limestone, Sandy Hollow, Montana
Chip suite, El Paso region geology
Carters Grove West
Migmatite exposed at Sea Point, South Africa
Sand from Clam Beach, Humboldt County, California
Orthoclase, Plane Polars
Physical Geology Mineral Lab Sample 2b
Ulster White Limestone ("The Chalk") with belemnite fossil
Snowball Earth Educational Rock Sample Suite D-6
Tephra Blanket, Kilbourne Hole
Milldale Antietam Breccia
Pteridinium from Farm Aar
Sediment from the Irrawaddy (Ayeyarwady) River, Myanmar
Hymenoptera 1121
Epidotized fault contact between two gneisses
Orthoclase, Crossed Polars
Slag from Britain used as ballast and then as road cobble in DC
Indian Ocean microconcretion
Ammonoid
Stromatoporoid
Weverton Formation atop Biscuit Mountain (Outdoor Lab)
Columnar stromatolite
Ulster White Limestone ("The Chalk"), Northern Ireland
Jasper
Precambrian-aged Castle Danger Amgygdaloidal Basalt
LiDAR view of the Harpers Ferry region, West Virginia / Maryland / Virginia
Chancellor Group slate, Yoho National Park, British Columbia, Canada
Folds in Upper Conococheague
Cruziana trace fossils
Mazon Creek Paleoplant
Sediment from Crescent Bar, Washington
Fusulinids
Anthracite
Vesicular basalt
Goðafoss; upper gorge, Iceland.
Small-scale detachment fold in Foreknobs Formation
Ennis, Montana quadrangle
Internal mold of a clam
Evan Thomas Creek, showing flood deposits and erosion
Lapilli from near Chaupi, Ecuador
Laminated Rockwell Formation diamictite
Brachiopods and crinoid stems in Mississippian-aged Reynolds Limestone
Kilbourne Hole, detail B
Chlorite slickensides
Halite
(Potential) accretionary lapilli in mudrock
Sedimentary Rocks Lab Sample Q
Helen Lake stromatolites, Banff National Park, Alberta, Canada
Buck Reef Chert, Barberton Greenstone Belt
Sediment from the Calvert Formation, Base of Zone 10
Foram from St. Ninian's Tombolo, Scotland, 1915x
Fossil Seed Fern
Diptera tipulidae 2380b
Sphalerite, Plane Polars
Garnet-Rich Purple Sand, Pfeiffer Beach, Big Sur, CA
Sand from a Theater Sandbag
Portrush: hornfels (contact metamorphosed Lias shale) above Portrush gabbroic/doleritic sill
Ostracodes and brachiopods in Tonoloway Formation limestone
Lamprophyre, Crossed Polars
Buda Formation Fold
Albite
Unknown sedimentary
Sand from Ocean Beach, San Francisco, California
Mill Bay, Rathlin Island, Northern Ireland
Sodium-rich Plagioclase Feldspar at 1915x
Ostracodes in Tonoloway Formation limestone
Tubestone stromatolite
Zoisite
Granitoid, Robertson River Igneous Suite
Fossils in Reynolds Limestone, Mauch Chunk Formation
Mylonite, Moine Thrust, Eriboll region, NW Highlands, Scotland
Igneous Rocks Lab Sample F
Sunwapta Glacier
Dike contact exposed at Kildonan, Arran, Scotland
Those aren't crinoid columnals
Quartzite, plane polars
Wills Mountain, The Narrows, Cumberland, Maryland
Weathered basalt near West Light, Rathlin Island, Northern Ireland, U.K.
Hogbacks - Sheep Mountain Anticline, Wyoming
Base of the Stac Fada Member of the Clachtoll Formation of the Stoer Group, North-West Highlands, Scotland
Mylonite
Igneous Rocks Lab Sample G
Chlorite slickensides from Paw Paw Bends
Rockwell Formation diamictite from Sideling Hill
Roadcut Northwest of Bisbee, AZ
Actinolite in Quartz
Sacagawea Peak from bioherms near the Thunderer, Bridger Range, Montana
Unknown Sedimentary Rock
Biotite Granite, Plane Polars
Metamorphic Rocks Lab Sample H
Blue kyanite
Frank Slide, Alberta, Canada
Chapman's Mill, Thoroughfare Gap, Virginia
Spherulitic felsite, Shetland
Wrinkly crenulation folds in marble
Sand from the Mediterranean Sea at Torremolinos, Spain
Blueschist
Sand from Siesta Key, Florida
Crossbedding preserved in phyllite
New Market to Lincolnshire to Edinburg Limestones - Strasburg, VA
LS tectonite, Phoenix Mountains, Arizona
Witvlei Group stromatolites
Evaporite texture in Tonoloway Formation
Martinsburg Formation
Olivine-rich volcaniclastic sand and shell fragments, Kaua'i, Waimea, Hawai'i
Mole Hill basalt
Graptolites
Alluvial gravel, Bow River, Banff
Dolomitic limestone
Paleoproterozoic gneiss from Clear Creek Canyon, Colorado
Cloudina
Selenite
Martinsburg Formation, South Page Valley Road, Page County, Virginia
View to the north of Old Rag Mountain
Unknown Sedimentary Sample
Potassium feldspar
Sediment from Clear Creek, Colorado
Snowball Earth Educational Rock Sample Suite PFH-2
Son Cocó Rock Avalanche (La avalancha de rocas de Son Cocó), Alaró, Mallorca, by CarDec
Catoctin Formation greenstone, Rockfish Gap, Virginia
Echinoid hemicidaris
McKenzie Pass Lava Flow
Giant's Causeway, Northern Ireland
Mistaken Point
Precipitation lamellae
Spherulitic felsite, Shetland
Kimberlite from Barkly West, South Africa, Plane Polars
Sub-Torridonian unconformity, North-West Highlands, Scotland
South Fort Valley Antiform
Lower Mississippian Rockwell Formation roadcut on Corridor H, West Virginia
Unnamed Syncline - Sheep Mountain Anticline, Wyoming
Sand from the Sea of Siam, Pattaya, Thailand
Helderberg limestone, Corridor H, West Virginia
Peridotite from the Josephine Ophiolite
Mylonite, South Mountain metamorphic core complex, Phoenix, Arizona
Migmatite
Corumbella campground
Paleovalley in the Stoer Group / Lewisian Gneiss unconformity surface.
Confusion Hill medium-range outcrop #4
Enstatite, 3095x
Sediment from Spanish Bay Beach, CA
Granite
Old Red Sandstone, cliff at Dunbar, Scotland
Arkose
Cross-cutting dikes in gabbroic host rock in Georgetown Intrusive Suite.
Konnarock Formation
Chesapecten middlesexensis
Tourmaline
Gypsum variety Alabaster
Graded beds of pisolites, Tansil Formation
Andesite with aligned feldspar phenocrysts, Little Walker Caldera, California
Corona Heights Fault, San Francisco
Muscovite, 2800x
Pseudotachylyte from Asbestos Mountain, CA, Plane Polars
Athabasca Glacier with prominent lateral moraines
Littleton Formation schist from Mt. Washington, New Hampshire
Sandstone roll-up feature in the Stac Fada Member of the Clachtoll Formation of the Stoer Group, North-West Highlands, Scotland
Porphyry
Igneous Rocks Lab Sample A
Hampshire Formation strata
Nelsonite
Ghost boundaries in quartzite, crossed polars
Flute casts in Brallier Formation shale
Igneous Rocks Lab Sample B
Subhedral halite
Permian red beds near Hutton's Unconformity, Lochranza, Arran
Devonian Hampshire and lower Mississippian Rockwell Formations roadcut on Corridor H, West Virginia
Sideling Hill (North Side), Maryland
Hibriten Mylonite
Contact between Fauquier Formation marble and Catoctin Formation greenstone, near Lime Kiln Road, Virginia
Sand from Berufjörður, Iceland
Catoctin greenstone
Internal mold of a clam
Graptolites, sp. Tetragraptus
"Bermuda Pink Sand" with Forams
Suite of four metamorphic index minerals
Massanutten Sandstone exposed at Red Hole on Passage Creek
Rocky Gap Run, Lake Habeeb, Maryland
Folded turbidites at Saligo Bay, Islay, Scotland
Folded metamorphic rocks exposed along the shore of Cabbage Island, Maine
Metamorphic Rocks Lab Sample S
Evan Thomas Flood Wash
Rockwell Formation diamictite
Teredo, edge-on
Felsic mylonite from the Dover Fault, Newfoundland
Chert Nodule in Ulster White Limestone ("The Chalk")
Augite
Andalusite
Sedimentary Structure?
Ptygmatic folding in gneiss
Folded strata of the Silurian Tonoloway Formation
Conemaugh Group, showing paleoslump and fluvial scour features, Corridor H, West Virginia
Cirque Peak, Banff National Park, Alberta
Cushendun Conglomerate of the Cross Slieve Group, Cushendun, Northern Ireland
Evaporite texture in Tonoloway Formation
Siccar Point, Scotland
Mahantango Formation, showing fossil brachiopod fauna
Helderberg fault breccia contact
Basalt, Plane Polars
Differential weathering in Nolichucky Formation
Mylonite, North-West Highlands, Scotland
Sediment from Wadi Al Khames, Al Hajar Mountains, Oman
Igneous Rocks Lab Sample L2
Brachiopods in sandstone, Pennsylvania
Martinsburg Formation, South Page Valley Road, Page County, Virginia
Spiral graptolite
Barite horizon, Mapepe Formation of the Fig Tree Group
Marble, Plane Polars
Igneous/sedimentary contact, Arran
Volcaniclastics from the volcanic highlands near Grímsstaðir, Iceland
Chlorite schist
Snowball Earth Educational Rock Sample Suite 22
Oolitic hematite
Amphibolite, Crossed Polars
En echelon tension gashes in quartz arenite
Chesapecten middlesexensis, interior
Sand from Al Habab, Dubai, UAE
Brachiopod fauna of the Nealmont Formation, Germany Valley, West Virginia
Sediment from Accotink Creek, Fairfax, Virginia
Passage Creek: not in flood
View west along the southern shore of northern Rathlin Island (from the Roonivoolin Trail)
Granite exposed along the shore of Cabbage Island, Maine
Rugose coral calyces
Portrush Sill, view #1
Serpentinite from the Josephine ophiolite sequence
Kink bands in Dalradian schist, Shetland
Debris flow east of Field, British Columbia, Canada
"Mississippi Valley" Outcrop - Sheep Mountain Anticline, Wyoming
Incipient Cleavage in Siltstone
Ridgeley Sandstone
Gastropod-bearing agate ("Turitella agate") of the Green River Formation, Wyoming
Em4 fluvial process model after a run
Leesburg Conglomerate
Martinsburg Formation, Millner Road (near Deer Rapids Road), Shenandoah County, Virginia
Organ Mountains-Aguirre Springs
Wilson Hall, Bluestone Limestone, James Madison University
Graded bed in Tonoloway Formation
Sykesville Formation, Chain Bridge Flats, DC
Rock Gypsum, Crossed Polars
Volcanic arch at Dimmuborgir, near Lake Mývatn, Iceland
Fold and Fault in the Amsden Formation on the eastern side of the Bighorn Mountains, Wyoming
Folded banded iron formation
Paleoproterozoic Gneiss, Clear Creek Canyon, Colorado
Crazy Cat breccia
Watern Cove
Galena
Crossbedding preserved in Popes Head schist
Igneous Rocks Lab Sample I-A
Fish fossil from Green River Formation
Polished green porphyritic metavolcanic from St. Anthony, Newfoundland
Igneous Rocks Lab Sample E
Exposure of Catoctin Metabasalt at Point of Rocks, Maryland
Mather Gorge, Great Falls, Maryland
Pillow basalts at Kirby Cove
Ignimbrite, Mt. Vesuvius, Italy
Slate, Plane Polars
Graptolite fossils from Dobb's Linn, Scotland
Tauz karst spring - the deepest underwater cave in Romania (view from south)
Sandstone and conglomerate
Cristo Rey: Buda Formation - Fossils in the quarry
Wyler Aerial Tramway
Igneous Rocks Lab Sample K
Smoo Cave
Patagonian turbidites, Chile
Igneous Rocks Lab Sample H
Sediment from Cushendun, Northern Ireland
Graptolites, Dob's Linn, Scotland
Lewisian gneiss exposed near Durness, Scotland
Spherulitic felsite, Shetland
Coastal Plain fossil smorgasbord
Sediment from Myrtle Creek, Myrtle Beach, Del Norte County, California
Fagopsis leaf
Calamites
View across the Barite Valley
Ammonites in contact-metamorphosed Lias, Portrush, Northern Ireland
Sand from Halls Lake, Ontario, Canada
Rock Garden
Augite, Crossed Polars
Laminated Shale, Plane Polars
Massanutten Sandstone
Fossil Pecopteris
Fluorite
Sykesville Formation, Chain Bridge Flats, DC
Diptera tipulidae 638b
Antietam Breccia 2
Tafoni-covered wall, Giant City State Park, Illinois
Flood deposits on Evan Thomas Creek, Kananaskis Trail, Alberta
Sediment from Squantum Head, Quincy, Massachusetts
Amphibolite from Great Falls, Maryland
Pyritized plant tissue from the Rockwell Formation diamictite
Barrier Lake, Mt. Baldy, and the Kananaskis Valley
Brachiopods and crinoid stems in Mississippian-aged Reynolds Limestone
Basalt Columns at Skinner Butte, Eugene, OR
Foreknobs Formation exposed on Rt. 50 west of Gore, Virginia
Double unconformity at Beinn Garbh, North-West Highlands, Scotland
Folded metamorphic rocks exposed along the shore of Cabbage Island, Maine
Igneous Rocks Lab Sample O
Giant's Causeway, Northern Ireland
Cross-bedding in Massanutten Sandstone
Rockslide in Gog Formation quartzite, trail to Helen Lake, Banff National Park, Alberta, Canada
Sedimentary Rocks Lab Sample A
Bluestone Limestone, Carrier Library Exterior, James Madison University
Rutile, Plane Polars
Sand from The Bahamas
Sedimentary Rocks Lab Sample Z
Portrush Sill, view #2
Volcaniclastic sediment, Kirkjufjara Beach, Iceland
Lunar Breccia Sample 65015, Crossed Polars
Clastic dike
Martinsburg Formation, South Page Valley Road, Page County, Virginia
Martinsburg Formation, South Page Valley Road, Page County, Virginia
Great Unconformity, Wind River Canyon, Wyoming
Bloomsburg Formation outcrop
Garnetiferous schist, Wrangell, Alaska
Passage Creek NOT in flood
Striarca fossil
Cushendun Conglomerate of the Cross Slieve Group, Cushendun, Northern Ireland
Halite Crystals, 3175x
Quartz pebble metaconglomerate (quartzite) of the Silurian Tuscarora Formation, West Virginia
Malachite, Plane Polars
Paw Paw, West Virginia-Maryland quadrangle
Cristo Rey: Buda Formation - folds and faults
Martinsburg Formation exposed at Staunton, Virginia
Campus Andesite with xenolith
S-C mylonite
Igneous intrusions in gneiss, Clear Creek Canyon, Colorado
Albite in Diorite, Plane Polars
Millboro Formation shale, Route 33 near Brandywine, West Virginia
Passage Creek: not in flood
S-C fabric in Rockfish Conglomerate, Virginia Blue Ridge
Fault scarp at Þingvellir
Platteklip Gorge, Table Mountain
"Madeira Point" on the Billy Goat Trail
Cleavage in folded turbidites at Saligo Bay, Islay, Scotland.
Sedimentary Structure?
"Breccia Wall," Antietam Formation, SE Boyce quadrangle, Virginia
Sediment from Vulcano, Aeolian Islands, Italy
Thin Section of the Doushantuo Phosphorite
Metamorphic Rocks Lab Sample D
Igneous Rocks Lab Sample M
The Clydesdale Fault, Washington, DC
Bryozoan Archimedes
Wall of Peninsula Formation Sandstone, Cape Supergroup, Table Mountain
McKelligon Canyon
Beach sand from Lake Ontario in Canada
Boninite, New Calendonia
Sediment from Big Rocky Run, Centreville, Virginia
The Alex Bay Cut
Volcaniclastic Breccia from Mount St. Helens
Wapiti Fm. Volcaniclastics - Cody, Wyoming
Brallier and Chemung Formations, new New Route 55, West Virginia
Granite vein cutting Paleoproterozoic gneiss, Clear Creek Canyon, CO
Patterson Creek Mountain Anticline 3
Trilobite, Devonian of Morocco
Rutile needles on biotite from Tioga Bentonite
Blueschist-grade folded metachert+shale
Deer Mountain Tephra Unconformity
Portrush Sill, view #3
Pyrolusite
El Capitan, West Texas
The Drowned Forest - Hebgen Lake, Montana
Storm deposits in Tonoloway Formation limestone
Sand from Vista Point, Del Norte County, California
Mist Mountain Formation (Kootenay Group), Canmore, Alberta
Metamorphic Rocks Lab Sample L, another side view
Metamorphic Rocks Lab Sample R
Conglomerate with Calcite Cement and Hematite Cement, Plane Polars
Gneissic xenolith in Scourie dike mafic rock
Microcline
Anorthite, Plane Polars
Sheared Dalradian metaturbidites w/ dike tip at Lochranza, Arran, Scotland
Mt. Louis, Banff National Park, Alberta
Muscovite staurolite schist
Ignimbrite at Grind of the Navir
Snowball Earth Educational Rock Sample Suite PFH-1
Fusulinid-rich sediment
Titanite
View SSW from Duncan Knob, George Washington National Forest, Virginia
Bryozoan-rich limestone
View from Spruce Knob, looking south
Mylonite / "LS Tectonite"
Cushendun Conglomerate of the Cross Slieve Group, Cushendun, Northern Ireland
Sedimentary Rocks Lab Sample P
Sulphur Springs, Hillsborough County, Florida quadrangle
Sedimentary Rocks Lab Sample W
Sheared gabbro
Peyto Lake, Banff National Park, Alberta, Canada
Lake Wales, Florida quadrangle
Ball and pillow load-sag structures in Graafwater Formation
Upper Jurassic Morrison Fm. - Sheep Mountain Anticline, Wyoming
South lateral moraine, Athabasca Glacier (inside view)
Ostracode fossils in Tonoloway Formation
Mylonite with well-developed foliation and lineation
Biotite
Diatomaceous earth
Grudaidh Formation w/ vogesite sill, faulted
Looking into the Bow from Barrier Mountain
Physical Geology Minerals Lab Sample 4
Green ignimbrite overlying basalt, Berufjörður, Iceland
Anticline in Veach Gap
Folded turbidites of the Smaull Greywacke at Saligo Bay, Islay, Scotland.
Tonoloway ostracode bed
Trimmers Rock
Flat lying lake strata, Yesnaby, Orkney, U.K.
Sandstone blocks near Seneca Quarry, Maryland
Martinsburg Formation at Guard Hill, north of Front Royal, Virginia
Hornblende Sand Grain, 3265x
Harpers Formation at Jefferson Rock, Harpers Ferry, West Virginia
Pool at Hofsos, Iceland
Pyrites with twin fibrous "tails" or "beards"
Cascade Canyon
Folded Cretaceous sediments of the Western Interior Seaway
Calcite, 3095x
Sedimentary Rocks Lab Sample O
Peridotite, Barberton Greenstone Belt, South Africa
Neuropteris
Chevron Folds - Scaglia Rossa Formation, Le Marche Italy
Unakite, Crossed Polars
Granite
Fossil gingko leaf
Chalcopyrite
Arkose, Plane Polars
Aquia Creek Sandstone
Old Man of Hoy
Eocene-aged herring Knightia eoceana
Phyllite, Crossed Polars
Folded turbidites at Saligo Bay, Islay, Scotland.
Foreknobs Formation - Baker section 5
Fucoid beds
Tilted, folded, intruded metamorphic rock, Clear Creek Canyon, Colorado
Hedinsfjörður, between the two big tunnels on Tröllaskagi Peninsula, Iceland
Chalcedony
Banded iron formation, Barberton Greenstone Belt, South Africa
Petrified wood
Martinsburg Formation, Millner Road and Bethel Road, Shenandoah County, Virginia
Physical Geology Minerals Lab Sample Set 5
Unknown Sedimentary Rock Sample
Diptera tipulidae 1076
Cross-bedding in rounded cobble of pink quartzite
Rocky Islands
Bedrock Geology of Connecticut
Folded turbidites of the Smaull Greywacke, Saligo Bay, Islay, Scotland
Augite, Plane Polars
Sub-Torridonian unconformity, North-West Highlands, Scotland
Plaid Twinning in Microcline, Crossed Polars
Fauquier Formation Outcrop
Chesapeake Bay Plankton Tow, 3200x
Sediment from Little Cayman
Moore House Member - West
Fossil Stigmaria
Curly graptolites
Mitchem's Pit Close up
Pennsylvanian Conemaugh Group - cropped
Accretionary lapilli, Msauli Chert, Barberton Greenstone Belt, South Africa
Marble and blueschist, Perissa, Greece
Carmel Valley River Deposits
"Dunbar Marble": Mississippian limestone chock full of rugose corals
Maidens Gneiss, Crossed Polars
Coarse Sediment from Canoa Beach, Ecuador
Tauz karst spring - the deepest underwater cave in Romania
Whipcove Anticline
Anticline/Syncline Pair Patterson Creek Mountain Anticline WV55 North Side
Euomphalus fossil
Highland County, VA Mafic Intrusion
Oriskany sandstone, plane polars
Talc tremolite schist, plane polars
Ronasvoe beach gravel
Rockfish Quarry 2
Ammonoid
Tombolo at St. Ninian's Isle, Shetland Islands, Scotland
Sediment from Scientists' Cliffs, Maryland
Garnet in Castner Marble, Franklin Mountains, West Texas
Martinsburg Formation graywacke
Railroad cut, Linden, Virginia
Apatite
Green quartzite
Swift Run Formation
Quarry in Rockfish Conglomerate
Cathedral Peak granodiorite
Canyon Diablo meteorite
Phlogopite
Glacier on Mt. Stephen
Zircon, 3875x
Geologic map of the Devil's Fence quadrangle, Montana
Fauquier Formation and Backpack
"Cub Sandstone" (Uppermost Martinsburg Formation), near Catherine Furnace, Virginia
Dismembered, folded sandstone body from Corridor H, WV, plane polars
Diorite
CPR Tunnel Debris Flow
Martinsburg Formation, South Page Valley Road, Page County, Virginia
Sediment from Acadia National Park, Maine
Catoctin Formation metabasalt showing amygdules and asbestos veins
Lower Martinsburg Formation outcrop at Funk Road and Route 11, south of Strasburg, Virginia
Great Unconformity, Wind River Canyon, Wyoming
Shell-rich horizon in Mahantango Formation
Foreknobs Formation- Baker Section 3
Hampshire Formation, Corridor H, West Virginia
Slickenfibers in serpentenite
Folded metamorphic rocks exposed on C&O Canal
Pteridinium at Aarhauser
Granite slab, Haupt Gardens, Smithsonian Instituion, Washington, DC
Lamprophyre dikes on the Virginia side, visible from the Billy Goat Trail
Rudist
Chapman's Mill, Thoroughfare Gap, Virginia
Helen Lake stromatolites and Cirque Peak, Banff National Park, Alberta, Canada.
Serpentine
Tourmaline in Lepidolite
Diabase at Conway Robinson State Forest, Virginia
Sand from Calvert Cliffs State Park, Maryland
Stephen / Eldon formational contact, Yoho National Park, British Columbia, Canada
Porphyritic Andesite, Plane Polars
Fossils and storm deposits in Tonoloway limestone
Confusion Hill medium-range outcrop #5
Gabbro, Fetlar, Shetland
Alluvium and soil profiles
Travertine
Archean conglomerate with detrital pyrite
Coelacanth tail fossil from the Solite Quarry, Dan River Basin, Virginia
Conemaugh Group, Corridor H
L-S tectonite, Phoenix Mountains, Arizona
Grus
Calvert Formation, Scientists' Cliffs, Maryland (#4 of 8)
Graphite Schist, Crossed Polars
Migmatite on the Billy Goat Trail, Great Falls, Maryland
Garnet Mica Schist, Plane Polars
Plagioclase feldspar
Mineral Grains from a Herkimer Diamond Mine
Whipcove Anticline - faulted eastern limb
Sediment from South Ari Atoll, Republic of Maldives
Igneous intrusions in gneiss, Clear Creek Canyon, Colorado
Portrush: hornfels (contact metamorphosed Lias shale) above Portrush gabbroic/doleritic sill
View over the Komati Valley
Staurolite
Gypsum, var. Satinspar, 2800x
Basalt
Kyanite, 3175x
Malachite
Storm deposit in glauconitic sandstone
Graptolites
Klamath Basin
Öxará River at Þingvellir National Park, Iceland
Sediment from Blackbird Caye, Turneffe Atoll, Belize
Rock wall at Knockan Crag, North-West Highlands, Scotland
Hueco Group Tom Mays State Park El Paso TX
Conglomerate with Hematite Cement, Plane Polars
Channeled Scabland with giant gravel bar, Pinto Ridge Road, Washington
Ronas Hill Granite, Crossed Polars
Cristo Rey: Buda Formation - Fossils in the quarry
Breccia in Antietam Formation, Swift Shoals
Ostracode and gastropod body fossils, Tonoloway Formation
Kink banding in Laurel Formation of Rock Creek Shear Zone, Broad Branch, Washington, DC
Ghost boundaries in quartzite, plane polars
Sedimentary Rocks Lab Sample V
Crinoid fossil
Amygdular basalt from Cornwall, Pennsylvania
Chromite olivine cumulate, Stillwater Complex, Montana
Metamorphic Rocks Lab Sample C
Fascinating Folded Float under Route 15 Bridge at Point of Rocks, Maryland
Signal Knob Overlook, Shenandoah National Park
Sediment from Jenner, CA
Mariopteris
Passage Creek: not in flood
Graded bed in Martinsburg Formation
Anorthosite, Adirondack Mountains, New York
Flat pebble conglomerate, Gros Ventre Formation
Limy slate
Beartrap Canyon, Montana
Sediment from the Outer Banks, North Carolina
Just a cool rock.
Lapilli from Mt. Etna
Rockwell Formation diamictite
Rock Gypsum, Plane Polars
Ridgeley Sandstone fauna
Mudchip conglomerate w/ varying oxidation states
Sediment from Tangalle, Sri Lanka
Murri Anticline & Oman Ophiolite
Metamorphic rocks exposed along the shore of Cabbage Island, Maine
Talc tremolite schist, crossed polars
Storm deposit in Reedsville Formation
Fine Sediment from Canoa Beach, Ecuador
Smaull greywacke turbidites exposed south of Saligo Bay, Islay, Scotland
Sedimentary Rocks Lab Sample R
Microbially induced sedimentary structures, Barberton
Fossil Metasequoia and angiosperm
Tremolite in quartzite
Diabeg Formation, Torridonian Group, North-West Highlands, Scotland
"Rocks of Virginia" garden at the DGMR
Serpulids
Trimmers Rock Bouma sequences
Folds and Faults in Foreknobs, Bergton, Virginia
Sand from Ocean City, Maryland
Chippokes Plantation 1
Ultramylonite
Southern Franklin Mountains
Diptera tipulidae 936
Lamprophyre dikes at Mather Gorge, Great Falls, Virginia
Amygdules in Catoctin Formation
Sediment from Creek Trail in Sabino Canyon, Arizona
Grand Canyon from Lipan Point
Panorama of Reynisfjara beach in Iceland
Sillimanite in Sillimanite-Garnet Gneiss, Crossed Polars
Komatiite, Barberton Greenstone Belt
Permian Reef Trail, McKittrick Canyon, Guadalupe Mountains National Park, Texas
Sediment from Ronasvoe, Shetland, Scotland
Dark conglomerate
Hornblende schist
Metamorphic Rocks Lab Sample G
Convolute bedding in Millboro Formation sandstone
Foram from La Isla Verde, Puerto Rico, 3155x
Skolithos in the Hampshire Formation
Permian sedimentary rocks near the site of Hutton's Unconformity, Lochranza, Arran, Scotland
Sediment from Tickle Cove, Bonavista Peninsula, Newfoundland and Labrador
Natural Bridge, Canada 2
Sandstone with Calcite Cement, Plane Polars
Kaap Valley Pluton, Barberton Greenstone Belt
Talc
Kilbourne Hole 360, January 2009
Fossil Annularia and Mariopteris nervosa
Physical Geology Mineral Lab Sample 10-4
Stromatolitic chert from the ~1.9 Ga Gunflint Formation
Diptera tipulidae 2223b
Strained Antietam Formation
Beach sand from Bell's Beach near Victoria, Australia
Physical Geology Mineral Lab Sample 10-11
Rockwell Formation diamictite
Ammonites in contact-metamorphosed Lias, Portrush, Northern Ireland
Sedimentary Rocks Lab Sample H
Obsidian trio
LIDAR Weverton Formation - Blue Ridge front, Virginia
Huckleberry Ridge Tuff, Madison Valley, Montana
Ernietta Hill
Bituminous coal
Plaid Twinning in Microcline, Plane Polars
Gabbro, Fetlar, Shetland
Brachiopods and bivalve mollusks
Harpers Formation, Harpers Ferry, West Virginia
Gabbro, Crossed Polars
Purslane Formation Sandstone, Sideling Hill, Maryland
Ellipsoidal reduction spots in Welsh slate
Granite
Lunar Sample 12002 Thin Section of Basalt, Crossed Polars
Disconformity, Hungary
Absaroka volcanic breccia
Diptera tipulidae 512
Diptera tipulidae 931
Grind of the Navir
Gibbsite in Bauxite
Mather Gorge
Halite casts
Buzzard Rocks
Sediment from Mt. Suswa, Kenya
Folds in Edinburg Formation, Opequon Creek, Clarke County, Virginia
Mantle xenolith
Ostracodes in Tonoloway Formation limestone
Rainbow Canyon, Death Valley National Park
Vesuvius summit crater
Nelsonite
Mariopteris
Grudaidh Formation (Durness Group) w/ two vogesite sills and two faults
Araucaria
Crinoid calyx
Meteorite from Morocco
Old Red Sandstone, cliff at Dunbar, Scotland
Diptera tipulidae 007a
Igneous Rocks Lab Sample N
Laminated and faulted Tonoloway Formation
Paw Paw Tunnel, upstream exit
Topaz
Peridotite from the Josephine Ophiolite, Plane Polars
Brecciated Antietam Formation
Athabasca Glacier
Amygdules in Catoctin Formation metabasalt
Schist trio
Syncline Tension Gashes, Corridor H
Calcite
Wind River Canyon Wyoming
Igneous Rocks Lab Sample Z
Dropstones in weakly-lithified "silt-ite" from Looking Glass Highway, east of Glacier National Park
Martinsburg Formation, South Page Valley Road, Page County, Virginia
Scoria
Carters Grove, Eastern exposure
Ulster White Limestone ("The Chalk") with belemnite fossil, Rathlin Island, Northern Ireland (U.K.)
Giant eurypterid trackway near St. Andrews, Scotland
Selenite
S3 spherulite, Fig Tree Group, Barberton Greenstone Belt
The Nose - Sheep Mountain Anticline, Wyoming
Weverton Formation at Outdoor Lab (Biscuit Mountain)
Dike cross-cutting Colonsay Group meta-sediments, Machir Beach, Islay, Scotland
Fig Tree Formation banded chert
Metavolcanic and metasedimentary mélange, Franciscan Complex, Pacifica, California
Travertine at Tumbling Run
Red cross-beds
Hutton's Unconformity, Arran, Scotland
Archean-aged garnetiferous basement rock from Montana
Mud cracks in Castner Marble argillite
Mineral Sample Set N
Soft sediment deformation variety pack
Tanytrachelos, from the Solite Quarry in the Dan River Basin, Virginia
Ammonite in hornfels
Porphyritic dike rock, Blackwaterfoot, Arran, Scotland
Diopside
Porphyritic Rhyolite, Plane Polars
Marble, Crossed Polars
Verdite
Halite Crystals on Sand Grain, 4145x
Unknown Sedimentary Sample
Stromatolite from Namibia
Folded and faulted rocks at Summerleaze Beach, Bude
1959 Earthquake slide and Lake in Montana
Plant fossils in the Allegheny Formation
Petrified wood cross section
Edinburg Formation, showing Alleghanian cleavage, near Cedarville, Virginia
Petrified wood
Physical Geology Minerals Lab Sample 2a
Pyrrhotite
Foram from La Isla Verde, Puerto Rico, 2850x
Unknown Sedimentary Rock Sample
Anorthite
Cabin Creek Scarp - Hebgen Lake, Montana
Catoctin metabasalt at Point of Rocks, Maryland
Kilbourne Hole, detail D
Pteridinium from Farm Aar
East Brownsville, Texas quadrangle
Rhyolite
Giant's Causeway, Northern Ireland
Papil Water, Fetlar, Shetland
Volcanic bomb
"Geologic provinces of northern Virginia" display
Klingle Valley metaconglomerate, Laurel Formation, Rock Creek Shear Zone, Washington, DC
Rockwell Formation diamictite
Leopard Rock of the Beartooth Highway
Porphyroblastic Turkish blueschist
Helen Lake Stromatolites 3
Devil's Racecourse, Ft. Ritchie, Maryland
Arkose
Siliceous Oolite, Plane Polars
Parallel Roads of Glen Roy
Folded calc-silicate
Kink bands in schist of the Laurel Formation, Rock Creek Shear Zone, Washington, D.C.
Shark Bay
Pteridinium from Farm Aar
Marine body fossils in Mississippian-aged Reynolds Limestone
Sedimentary Rocks Lab Sample C
Clastic dike within Castner Marble, Franklin Mountains, Texas
Unknown Sedimentary Rock Sample
S3 spherulite layer in Mapepe Formation, Fig Tree Group, Barberton Greenstone Belt
Tanytrachelos, from the Solite Quarry in the Dan River Basin, Virginia
Sea stacks and sea bird nesting sites, north of West Lighthouse, Rathlin Island, Northern Ireland, U.K.
Channels in the Hampshire Formation
Sand from a dry wash near Block Mountain, Montana
Dinwoody Formation, Sheep Mountain Anticline, Wyoming
Nautiloid with melanterite
Aragonite
Allegheny Formation chert, plane polars
Tuff, crossed polars
Sphalerite
Bloomsburg Formation sandstone
Desiccation cracks in the Silurian Tonoloway Formation
Fossil fern
Sea stacks and sea bird nesting sites, south of West Lighthouse, Rathlin Island, Northern Ireland, U.K.
Brachiopod from the Needmore Shale
Millboro Formation fossils
Halite, 3455x
Ozark Cave
Stromatolite, Castner Marble, Franklin Mountains, Texas
Microbial sulfate reduction spots
The Backlimb - Sheep Mountain Anticline, Wyoming
Chippewa Falls (Wide)
Outsized clast (dropstone?) in Miette Group gritstone, southern Icefields Parkway, Banff National Park
"Dunbar Marble": Mississippian limestone chock full of rugose corals
Brecciated and folded Montoya Group
Fault breccia, Hebgen Lake Fault, Montana
Shenandoah River - South Fork
Chesapecten jeffersonius
Beartooth Andesite
Porphyritic vesicular basalt from Ka Lae, Hawaii
Rockwell Formation diamictite, crossed polars
Corona Heights Fault, San Francisco
Blastoid, side view
Olivine-rich sand from Ka Lae, Hawai'i
Diopside with red and white calcite
Folds exposed at Riggins, Idaho (annotated #2)
Contact between volcanics and sedimentary host rocks, Kinkell Ness, Scotland
Tuscarora sandstone, plane polars
Coprolite?
Sandstone of Hampshire Formation, Corridor H, West Virginia
Martinsburg Formation crinoids and brachiopods
"Blue granite" from Brazil
Sand from Perissa Beach, Santorini, Greece
Sediment from Crabtree Creek, Massies Mill, Virginia
Skolithos
Mazon Creek paleoplant
Another Column at YMCA Camp Harrison, North Carolina
Confusion Hill detail shot 1 - Castner Formation
Foliated dike in foliated tonalite, cobblestone in the streets of Washington, DC
Red cross-beds (annotated)
Chapman's Mill, Thoroughfare Gap, Virginia
Hell Creek Nirvana K/T boundary
Martinsburg Formation
Coal Bed, Corridor H, West Virginia
Sacagawea Cirque
Ecphora gardnerae, interior view
Argentinian folds
Chlorite Schist, Crossed Polars
Coarse Sediment from Jenner, CA
Muscovite and Chlorite, Plane Polars
Unknown Sediment Sample
Sedimentary Rocks Lab Sample D
Little A Glacier and Boundary Glacier, near Icefield Centre, Icefields Parkway, Jasper National Park, Alberta
Boudinaged tourmaline in Setters Schist
Migmatite, Plane Polars
Slate, Crossed Polars
Miette gritstone with outsized clast, southern Icefields Parkway, Banff National Park
Mauch Chunk Formation, showing Reynolds Limestone Member
Ooids and rip-up clasts
Channeled Scabland with subaqueous gravel bars, Wilson Creek, Washington
Opferkessel atop Old Rag Mountain
Araucaria mirabilis cone
Hueco Tanks
Granitoid dike from Clear Creek Canyon, Colorado
Mydarsjokull, Iceland
Up-close, small-scale folding, Patterson Creek Mountain Anticline WV55
Buttress Unconformities
Dimmuborgir, near Lake Mývatn, Iceland
LIDAR Weverton Formation - Blue Ridge front, Virginia with geologic map overlay
Ediacaran microbial mat: "elephant skin" texture
Stoer group unconformity (over Lewisian gneiss), Clachtoll, Scotland.
Mudchip rip-up clasts in argillite of varying oxidation states and quartzite of the Grinnell Formation
Petersburg Granite at James River State Park - Richmond, VA
Pennsylvanian Alleghanian Formation
Gypsum, var. Selenite, 3095x
Fossil Annularia
Extensional Shear Bands in Thin Section
View SSW from Duncan Knob, George Washington National Forest, Virginia
Folded turbidites at Saligo Bay, Islay, Scotland.
Fluorite
Scleractinian coral
Sediment from St. Vincent's, Avalon Peninsula, Newfoundland and Labrador
Annularia radiata
Sedimentary Rocks Lab Sample X
Leggetts Gap-Section 4
Physical Geology Mineral Lab Sample 10-12
Pt Lobos nonconformity
Kirkjufell, Snæfellsnes Peninsula, Iceland
Chimney Rock - Front View
Mudcracks
"Sketchy Trails" Outcrop - Sheep Mountain Anticline, Wyoming
The Leesburg Conglomerate at Ida Lee Park
Greenops boothi (?) trilobite pygidium
Bituminous shale
Quarry, Old Route 55, West Virginia
Mineral Sample M
Striped Rock Granite with fractured feldspars
Giant ooids
Earthquake Lake Scarp - Hebgen Lake Road, Montana
Andalusite in Slate, Crossed Polars
North Attleboro PetSmart Outcrop - View 2
Granite dike and mundy contact
Portrush: hornfels (contact metamorphosed Lias shale) above Portrush gabbroic/doleritic sill
Serpulids
Paradise road North side east of bridge shot 5
Weathered Sandstone
Giant's Causeway, Northern Ireland
Arsenopyrite
Quartzite
Walker Top mylonite
Sand from Scientists' Cliffs, Chesapeake Bay, Maryland at 3530x
Patterson Creek Mountain Anticline 2
Volcaniclastic Breccia from Mount St. Helens
Helderberg limestone, plane polars
Devonian Hampshire and lower Mississippian Rockwell Formations roadcut on Corridor H, West Virginia
Amphibolite
Lower Mississippian Rockwell Formation roadcut on Corridor H, West Virginia
Bow Falls Tool Marks
Ultramylonite with well-developed foliation and lineation
Fossils in the Martinsburg Formation
Chancellor Group slate, Yoho National Park, British Columbia, Canada
Passage Creek in Flood II
Fort Valley from Buzzard Rocks
Folded, foliated xenoliths in granite
Diorite, Plane Polars
Feeder dike(s) of the Catoctin Formation, exposed at Little Devil's Stairs Overlook, Skyline Drive, Shenandoah National Park, Virginia
Bow River Falls, Banff
Gneiss and migmatite, Clear Creek Canyon, Colorado
Sand from Miami, Florida
Echinoid hemicidaris
Dolostone
Amygdules from Precambrian-aged Castle Danger Basalt
Ferruginous quartzite
Southern Pinnacle - Sheep Mountain Anticline, Wyoming
Zoophycos trace fossils in Mahantango Formation
Patuxent River Tributary Sediment at 5020x
Porphyritic andesite, Crazy Mountains, Montana
Garnet schist
Serpentinite melange, Marshall's Beach, San Francisco
Beach cobbles, Mill Bay, Rathlin Island, Northern Ireland
Mudcrack Wall, limestone quarry on Old Route 55, West Virginia
Archean gneiss, Gallatin Range, Montana
Gneiss and migmatite, Clear Creek Canyon, Colorado
Giant's Causeway, Northern Ireland
Syncline in Helderberg Group
Calvert Formation, Scientists' Cliffs, Maryland (#8 of 8)
Lower Rainbow Canyon, Death Valley National Park
Ordovician Oneota Dolomite 1
Sediment from Fortune Head, Burin Peninsula, Newfoundland
K/T boundary. Gubbio #3
Talc
Sediment from Dunbar, Scotland
Confusion Hill detail shot 1
Metamorphic Rocks Lab Sample I
Pyrite in greenschist
Sheared gabbro from Castel Odhair
Marble breccia
Cairn Formation, Bow River Parkway, Alberta
Fossil Sphenophyllum
Funzie Conglomerate, Fetlar, Shetland, U.K.
Walker Top mylonite
Blastoid, top view
Grind of the Navir
Sillimanite in kaolinite
Jefferson Rock #1, Harpers Formation, Harpers Ferry, West Virginia
Rockfish Gap, Virginia
Ercall Quarry
Angular Unconformity, west of El Paso, Texas
Campus Andesite
Torridonian Group, North-West Highlands, Scotland
Helderberg Formation chert, plane polars
Sediment from Torres del Paine, Chile
Chippewa Falls (Detail)
Waldron, Arkansas quadrangle
Ostracodes in Tonoloway Formation limestone
Enstatite
Lunar Basalt Sample 12005, Plane Polars
Soapstone
Debris flow, Yoho National Park, British Columbia, Canada
Beach sand from the Puna Coast, Big Island, Hawaii
Archean/Cambrian nonconformity at Wind River Canyon, Wyoming
Oolitic Limestone, Plane Polars
Park City, Kentucky quadrangle
Hutton's Unconformity, Arran
Sand from Ophir Beach, Oregon
Weverton Formation
Blastoid, Top View
Drumadoon Sill
Basement complex, MP 16.3 on I-66 (westbound), east of Linden, Virginia
Albite in Diorite, Crossed Polars
Sediment from La Isla Verde, Puerto Rico
Anticline/Syncline Patterson Creek Mountain Anticline WV55 BIG
Cristo Rey: Buda Formation - overturned syncline
Carbonized fern
Blue Hole, Passage Creek, George Washington National Forest, Virginia
Serpentine Marble, Plane Polars
Felsic spherulite from Shetland
Beach sand from the Big Island, Hawaii
Sedimentary Rocks Lab Sample G
Alethopteris
Confusion Hill medium-range outcrop #3
Stromatolite from Namibia
Harpers Formation, Harpers Ferry, West Virginia
Graptolite fossils, Martinsburg Formation
View across the Barite Valley to outcrops of the Mapepe Formation of the Fig Tree Group
Ammonite
Archean-aged phyllite, Ontario, Canada
Rockfish Gap, Virginia
Crepidula
Fucoid Beds, North-West Highlands, Scotland
Pyrolusite dendrites on a limestone joint surface
Weverton Formation at Outdoor Lab (Biscuit Mountain)
Serpentine Marble, Crossed Polars
Metamorphic Rocks Lab Sample K2, Side View
Sediment from Andros Island, Bahamas, at low tide
Physical Geology Mineral Lab Sample 10-2
Castner Marble
Gowganda Tillite
Marble, Plane Polars
Hueco Group anthill
Pekisko Formation, Lac des Arcs, Alberta
Thoroughgare Gap from Turner Road
Sediment from Black Sands Beach, Marin County, CA
Heavy Mineral Sediment from Carmel Beach, California
Voltaire, North Dakota quadrangle
Unknown Sedimentary Sample
Gabbro
Crinoid calyx
Pipe Rock, North-West Highlands, Scotland
Klamath Faults 2
Stromatolites and ooids in banded iron formation
LiDAR-based digital elevation map of the Timberville, VA quadrangle
Garnet
Patterson Creek Mountain Anticline 1
Passage Creek in Flood I
Cornwallis Cave, Yorktown Virginia
Slabs of Brallier Formation shale, Paw Paw Tunnel
Nlaka Hill S1 2013-05-30
Unknown Sedimentary Rock
Amygdular meta-basalt, western Sierra Nevada, California
Staurolite, Crossed Polars
Granite, Wind River Canyon, Wyoming
Paleoproterozoic augen gneiss, Clear Creek Canyon, Colorado
Fauquier Formation Rock Wall
Helderberg limestones, Fort Valley Road, Virginia
Halite casts
Dewatering structure (?)
Imbricate zone, Durness Limestones, North-West Highlands, Scotland
Idaho Batholith contact
Fossil display at the Virginia Department of Geology and Mineral Resources
Echinoid hemicidaris
Mammoth Cave, Kentucky quadrangle
Foreknobs sandstone, plane polars
Breccia in basalt
Sediment from Kirby Cove, Marin County, California
Striations in Eldon Formation, exposed near Athabasca Glacier.
Argillaceous sandstone
Moine Thrust at Knockan Crag, North-West Highlands, Scotland
Sediment from Kinkell Ness, Scotland
Stylolite in Helderberg Group limestone, West Virginia
Unknown Sedimentary Rock
Proterozoic basement rock, Clear Creek Canyon, Colorado
Evaporite texture in Tonoloway Formation
Baraboo Quartzite - Van Hise Rock
Passage Creek Fauna of the Martinsburg Formation
Wisconsin Red Granite
Monocline in Madison Group limestones, western Bighorn Range, Wyoming
Metamorphic rocks and granite exposed along the shore of Cabbage Island, Maine
"Casa del Snake" Outcrop - Sheep Mountain Anticline, Wyoming
Rockwell Formation diamictite, Sideling Hill, Maryland
Microbially-Induced Sedimentary Structures, Stoer Group, Clachtoll, Scotland, Crossed Polars
Metatuff from the Catoctin Formation, South Mountain, Maryland
East Sheep Canyon - Sheep Mountain Anticline, WY
Sand from Valencia College, West Campus, Orlando, FL
Snowball Earth Educational Rock Sample Suite 29
Migmatite exposed at Sea Point, South Africa
New Market limestone, plane polars
Sedimentary Rocks Lab Sample S
Mylonite, North-West Highlands, Scotland
Strained trilobite
Massanutten sandstone slab with trace fossils
Hornblende, 1950x
Alethopteris
Allegheny Formation sandstone, plane polars
Hampshire Formation, showing channel forms in cross section
Diorite, Plane Polars
The nascent NOVA Annandale rock garden, as of May 2012
Calcite
Orthoclase (Potassium Feldspar)
Diptera tipulidae 2227a
Sand from the Cache La Poudre River, Colorado
Detail of Eastern Fold in the Large Rt 279 Outcrop, Bennington, Vermont, USA
Chlorite Schist, Plane Polars
Port Askaig Diamictite, Islay, Scotland
Sand from Omaha Beach, Normandy
Folds in Lewisian gneiss (weathered), Achmelvich, Scotland
Metamorphic Rocks Lab Sample B
Corundum
Ex-aragonite seafloor cements
Little ammonite
Graywacke, Plane Polars
Pipkrake garden
Mauch Chunk Formation, Corridor H, West Virginia
Two sections through a folded sandstone slab ("ploudin") from the mass transport deposit at the end-Devonian section on Corridor H, West Virginia
Breccia boulder
K/T Boundary exposed at Gubbio, Italy
Boudinage in Lewisian gneiss exposed near Durness
Helderberg Formation chert, crossed polars
Oolitic Limestone, Crossed Polars
Sykesville Formation, Chain Bridge Flats, DC
Apatite in Orthoclase
Stigmaria
Westward Facing Quarry Wall (Wide View), Corridor H
Epidosite, Crossed Polars
Sediment from Moss Landing Beach, California
Conglomerate with Calcite Cement and Hematite Cement, Crossed Polars
Sillimanite in Sillimanite-Garnet Gneiss, Plane Polars