The following is a list of links to favorite field photographs taken by Bruce Railsback. Educators are welcome to use these images in their teaching, so long as the images are not reproduced in publications and are not used for financial gain.

Field Photographs

Faults

Small thrust fault with drag folding, Rome Formation, U.S. 25E roadcut near Thorn Hill, Tennessee, U.S.A.

Major thrust fault with drag folding along U.S. 25E between Thorn Hill and Springdale, Tennessee, U.S.A.

A normal fault in Cretaceous strata west of Pueblo, Colorado. Note that the overlying Quaternary gravels are not cut by the fault.

A thrust fault with associated drag fold, Gaspe Peninsula, Canada.

Fault scarp of the Lost River normal fault above Mackay, Idaho, in 1987. Note person for scale.

A minor fault with noticeable weathering of fault gouge in Devonian carbonates, Tuscola, Illinois, U.S.A. Weathering of fault gouge makes a transition to the faults evident by preferential erosion in the following slides.

Apparent fault in gully between limestone outcrops to right and basalt outcrops to left in Antelope Valley near Arco, Idaho.

Apparent fault in valley between landscapes of different character in Antelope Basin near Arco, Idaho.

Apparent fault between landscape of different character above Mackay Reservoir in Lost River Valley, Idaho.

Fault scarp of apparent fault in Stanley Basin, Idaho.

Apparent fault viewed from Mammoth Hot Springs, Yellowstone National Park, Idaho.

Folds

Small folds on San Juan Islands, Washington. Note thickening in hinge in layer on which lens cap rests.

Small folds in gneiss on Bountiful Ridge above and east of the Great Salt Lake, Utah.

Horizontal fold above Pass Creek in Custer County, Idaho.

Small asymmetric folds in the Belt Supergroup along the Gallatin River in southwest Montana.

A small fold associated with thrust faulting, Gaspe Peninsula, Canada.

Ptigamtic folding of a vein in granite near Elberton, Georgia.

Joints / Fractures

Joints enlarged by dissolution in Jurassic anhydrite near Fort Dodge, Iowa.

Conjugate joints in Mississippian limestones at McCormick's Creek State Park, Indiana. Note water flowing from joints.

Fractures in granite somewhere on the coast of Nova Scotia, but the exact location is unknown.

Mineral-filled fractures in dipping strata, Gaspe Peninsula, Canada.

Weathering and Soils

Exfoliation fractures in granite on Stone Mountain, Georgia.

Root wedging in a large boulder in northern Georgia, U.S.A.

Clava Cairns, a prehistoric (ca. 2000 BC) site near Inverness, Scotland, and setting for next slide.

Monolith split by weathering, presumably by frost wedging, at Clava Cairns (see previous).

Boulder fractured by mechanical weathering, Great Smoky Mountains National Park, Tennessee, U.S.A.

Weathered rind and unweathered core of a piece of Ordovician limestone from Wilson County, Tennessee, U.S.A.

Residual quartz vein in saprolitic soil, northeast Georgia, U.S.A.

Peat cut on the Isle of Skye, Scotland.

Furrows of old cuttings for peat on a hillside (not in a bog) on the Isle of Skye, Scotland. (See previous.)

Sandy soil in the Coastal Plain of Georgia, U.S.A.

Soil and underlying bedrock near Gainesville, Georgia, U.S.A.

Forest soil and fractures in underlying bedrock, Lake District, Cumbria, England.

Black prairie soil (mollisol) near Blooming Prairie in southern Minnesota, U.S.A.

Black prairie soil (mollisol) with small erosional rills in Douglas County, South Dakota, U.S.A.

Modern soil developed on basalt in central Oregon.

Paleosol developed on basalt in eastern Oregon.

Paleosol in Badlands National Monument, South Dakota.

An apparent paleosol on glacial till overlain by a landslide breccia on the Geologensteig below Hungerburg and above Innsbruck, Tyrol, Austria.

Geomorphology

View #1 and View #2 of Providence Canyon, a human-induced example of erosion in the otherwise flat Coastal Plain of Georgia, southeastern U.S.A.

A rockfall deposit eroded by later stream flow on the flanks of the U-shaped Glen Coe valley, western Scotland

A U-shaped valley with a pronounced stream gully in a hanging valley above the Glen Coe valley, western Scotland

Gullies cutting a hillside that may have also undergone slumping in western Scotland.

Eastward-looking aerial view in northern Utah, U.S.A. showing old beach ridges of Lake Bonneville against the Wasatch Front, and contrasting north and south slopes within it.

A slump along South Dakota Highway 44 near the Missouri River.

Small slumps into a downcut gully, western Isle of Skye, Scotland.

Two landslides in distance impinging on the Stubai Valley as seen from Dresdener Hütte about Stubai in the Tyrol, Austria.

Rockfalls onto the Stubai Glacier, Tirol, Austria.

Gunnison Canyon in Colorado and the smooth topography into which it has cut.

A flat-bottomed valley in the Skagit Valley region of Washington.

An exposure of sands and gravels in a mountain valley near Sunbeam, Idaho.

A Utah lake, with a flat valley amidst slopes in the distance.

Point bars and meanders in Elk Creek, Stanley Basin, Idaho, U.S.A.

Meanders and floodplain of Tomichi Creek, Colordao, U.S.A.

Point bar and cut bank of a stream in Wildhorse Canyon, Custer County, Idaho, U.S.A.

View to east of alluvial fans fringing Lost River Mountains as seen from Burma Road above Mackay, Idaho, U.S.A.

Aerial view of Lost River Mountains, alluvial fan, and floodplain of Big Lost River, Butte and Custer counties, Idaho, U.S.A. text.

Also see the "apparent faults" above.

Hydrology

View of a dry high desert valley near Arco, Idaho with a spring in the distance (see next too)

Spring and tree low in dry valley shown in previous image.

Water seeping from coarse siliclastics at a small perched water table in a cliff on the northern California coast.

Grounwater emerging from joints in Mississippian limestones at McCormick's Creek State Park, Indiana, U.S.A.

An artesian well in Muhlach, Tyrol, Austria, with the Calcareous Alps from which the groundwater flow comes.

Hot springs near Sunbeam in central Idaho, U.S.A.

Travertines at Mammoth Hot Springs, Yellowstone National Park, Wyoming, U.S.A.

Fractures surrounded by Fe-oxide-bearing zones in a sandstone from Carter County, Tennessee, U.S.A.

Igneous Rocks

Inlcusions (xenoliths) in the Elberton Granite near Elberton, Georgia, U.S.A.

Pahoehoe in Quaternary volcanics near Craters of the Moon National Monument, Idaho, U.S.A.

Cross-cutting relationships among a xenolith, veins, and surrounding intrusive rock exposed along U.S. 50 just west of Monarch Pass, Colorado, U.S.A.

A volcanic breccia exposed along U.S. 26 in eastern Oregon, U.S.A.

Mt. Hood, a composite volcano in the Cascades of western Oregon, U.S.A.

Mount Hood, Mount Jefferson, etc. in the Cascades - a landscape view looking south.

A profile view of Molokai, a classic Hawaiian shield volcano, as seen from Maui. Photograph was taken by Sean Brophy of UC-Santa Barbara and part of a larger image used as the Earth Science Picture of the Day for February 5, 2003.

The Cascade volcanoes in a set of MODIS images.

Flood basalt on Snake River Plain east of Craters of the Moon National Monument, Idaho.

Sequence of flood basalts exposed in Snake River cut at Twin Falls, Idaho. Cf. image above.

Stone Mountain from beautiful Snellville, east of Atlanta, Georgia, U.S.A.

Sedimentary Rocks

Ordovician strata at a now-removed outcrop on an exit to the Nashville Airport outside Nashville, Tennessee, U.S.A. An illustration of layering of sedimentary rocks, of original (and sustained) horizontality and continuity of strata, and of the stability of continental interiors.

Unconformities

Angular unconformity in distance in northern Utah, U.S.A.

Angular unconformity of low angle and short duration in Pennsylvanian strata in southeastern Kentucky, U.S.A

A disconformity at which about one million years of stratigraphic record is missing, near Gladeville in central Tennessee, U.S.A., and a close-up view.

A regional non-conformity: Unlabled and labeled space-shuttle views of the Sinai Peninsula.

Glacial Geology

Till overlain by outwash (at hammer) overlain by till and thus evidence of episodic glaciation in a quarry near Russellville, Indiana.

An apparent paleosol on glacial till overlain by a landslide breccia that is in turn overlain by another till, and thus evidence of multiple episodes of glaciation. Geologensteig below Hungerburg and above Innsbruck, Tyrol, Austria.

Crevasses in the Stubai Glacier, Tirol, Austria. Note layering in ice.

Rockfalls onto the Stubai Glacier, Tirol, Austria.

A U-shaped valley at Schlegeis above Mayrhofen, Tirol, Austria. The next image shows the glacier and end moraine.

A terminal moraine left behind by retreat of an alpine glacier at Schlegeis above Mayrhofen, Tirol, Austria. The moraine has been breached the meltwater stream, which has also generated the valley train in the foreground. See previous image for setting

Glacial ice exposed above Hintertux, Tirol, Austria.

Lateral moraines from which a glacier has retreated above Hintertux, Tirol, Austria.

Lateral moraines flanking Stampflkees Glacier above Schlegeisstausee, Tirol, Austria.

View of a glacier from above the Stubai cable car run, Tyrol, Austria. Note the crevasses where the glacier bends in its flow down the mountain.

U-shaped valley below the Gaisbergferner Glacier above Obergurgl, Tirol, Austria.

Mountain views

A view across the Smoky Mountains in Great Smoky Mountains National Park, North Carolina, U.S.A.

A view into the Smoky Mountains in Great Smoky Mountains National Park, North Carolina, U.S.A.

A view into the Sawatch Range of the Rockie Mountains from Monarch Pass in central Colorado, U.S.A.

The Grand Tetons and Jackson Lake (Wyoming, U.S.A.) from the air.

The Grand Tetons from the ground (cf. above).

Beaverhead Mountains, which form the border between Idaho and Montana in the Rockies, as seen from near Salmon Idaho. (Many thanks to Jacob Haeberle of Idaho State University for helping me out with the correct nomenclature).

The Calcareous Alps above Innsbruck, Tirol, Austria.

The Calcareous Alps and Achensee lake from the bergstation (upper terminus) of the Maurach cable car near Jenbach, east of Innsbruck.

The Calcareous Alps (right) and Metamorphic Alps (left) from the Rofanspitze, the mountaintop to which one walks from the upper terminus of the Maurach cable car (previous image).

The Metamorphic Alps to north from the Schaufelferner Glacier above Stubai in the Tyrol, Austria.

The Metamorphic Alps to south from the Schaufelferner Glacier above Stubai in the Tyrol, Austria.

The Dolomites from Klobenstein, above Bozen (Bolzano) in South Tyrol.

The High Altas Mountains of Jurassic carbonates above the Ziz River south of the Tunnel du Legionaire in central Morocco. Note the small qubbah or shrine on the rond peak in the central foreground.

Stone Mountain from beautiful Snellville, east of Atlanta, Georgia, U.S.A.

Applied Geology

Rotary drillng rig of the Shell #1 Bauer in central Lousiana in about 1984.

External and internal views of limestone mines in Pennsylvanian strata near Kansas Ciy, Missouri.

A kaolin mine in Cretaceous strata near Thomson, Georgia, U.S.A.

     


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