magic-gigapans

Public Images

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