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This project established a permafrost monitoring network in this region, providing a baseline of permafrost thermal regimes for assessing future change at a total of 26 automated monitoring stations. Stations have collected year-round temperature data from the active layer and the permafrost starting from the summer of 2011. The strong correspondence between spatial variability in permafrost thermal regime and an existing ecotype map allowed for the development of a map of ‘permafrost thermal classes’ for the broader study region. Further, the annual temperature data was used to calibrate models of soil thermal regimes as a function of climate, providing estimates of both historic and future permafrost thermal regimes...
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This collection (known internally at Maryland Geological Survey as Component 9) consists of 1,474 black-and-white aerial photographs (1,472 unique frames plus 2 duplicates) plus 2 index maps which serve as a finding aid for the photographs in the two sub-components of this collection -- DC Collection 1 and DC Collection 2. The photographs are 9 in. by 9 in. in size and cover Washington, DC and vicinity (including portions of Maryland and Virginia). The counties in Maryland covered by these aerial photographs are Anne Arundel, Howard, Montgomery, and Prince George's Counties. No date is printed on these photographs; however, based on features shown in the photographs, Maryland Geological Survey (MGS) estimates...
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Rutile. Pen for scale. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 4-5011, TiO_2.
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Deer Creek Coal Field. Large dike cutting the coal bearing rocks below the Reed shaft, looking east along the dike. Pinal County, Arizona. 1903.
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View from the summit of Harney Peak, Black Hills. Pennington County, South Dakota. September 1897.
Categories: Image; Tags: Walcott Collection, photo print
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Strelna Creek valley, near old Nizina trail. Alaska. 1913.
Categories: Image; Tags: Alaska Images, photo print
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Navajo cornfield, Tyende Valley, Navajo County, Arizona, Marsh Pass quadrangle. July, 1910.
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Carlsbad Caverns National Park, New Mexico. Hattin's Dome and the Temple of the Sun, one of the spectacular scenes combining many of the characteristic features of the cavern, such as stalactites, stalagmites, columns, and monuments. Photo by R.V. Davis, circa 1923. Plate 24-B, U.S. Geological Survey Bulletin 760-C.
Categories: Image; Tags: Davis R.V., Photographers, photo print
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Album caption and index card: Two-story canyon of Crooked River, Crook County, Oregon. 1903. Handwritten notes on album caption: Plate 11-B in U.S. Geological Survey. Bulletin 252. 1905.
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Looking north from Eagle Dove Trail to Wizard Island and Llao Rock, Devils Backbone. Crater Lake National Park, Oregon. August 31, 1925.
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Cosmoceras, Cadoceras, and Kepplerites, Callovian (Jurassic) Ammonite from the Western interior of the United States. n.d. Plate 14, in U.S.Geological Survey Professional paper 249. 1953.
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Blackfeet Indian Reservation, Montana. Glaciated pebble from pre- Wisconsin drift on Two Medicine Ridge (plain No. 1). SW1/4, Sec. 17, T. 32 N., R. 13 W. Glacier County, Montana. Collected July 21, 1911.
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Contact between Cretaceous shales and overlying sandstone east side of Table Mountain. Fossils collected in shale below sandstone. (See Rich's notebook on field relations.) T. 22 N., R. 102 W. Almond quadrangle. Sweetwater County, Wyoming. 1907.
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Cliffs of volcanic breccia, Cave Spring, Silver Peak Canyon. Esmeralda County, Nevada. 1896.
Categories: Image; Tags: Walcott Collection, photo print
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Muscovite. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 17- 3092a, KAl_2Si_4O_4(OH)_2. This image is in the public domain pursuant to an agreement dated August 10, 2006 between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Recently formed cut-off on Sleepy Creek at Johnsons Mill, looking downstream through the rock cut over which the stream is now falling into the ponded waters of the old channel. Morgan County, West Virginia. 1911. Plate 20 in U.S. Geological Survey. Folio 179. 1912.
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Dakota sandstone where crossed by Highway 24. The formation consists of two sandstone and an intervening coal bearing shale unit, each about 25 feet thick. The shale and lower sandstone are cross bedded, shale bedding grading into sandstone bedding and the cross beds truncated by the top sandstone. The shale is interpreted as top set beds, the lower sandstone as foreset beds. View is nearly west. Wayne County, Utah. 1935.
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Album caption and index card: Rock needles eroded in basalt, bank of Yellowstone River below Tower Falls in Yellowstone Canyon. Yellowstone National Park, Wyoming. 1911.
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From rim south of main Cochetopa Creek, above mouth of Lake Fork, looking northwest down the glacial valley of that stream. Cochetopa quadrangle (?). Saguache County, Colorado. August 18, 1914. F-stop 16, 1/25 second.


map background search result map search result map Stereo studies about Mount Blackmore, M.T. Cascades, head of Middle Creek. Gallatin County, Montana. 1872. Opal Canyon, Crooked River, showing basalt of inner canyon in contact with stratified beds of outer canyon. 1903. Looking north from Eagle Dove Trail to Wizard Island and Llao Rock, Devils Backbone. Crater Lake National Park, Oregon. 1925. Needles eroded in basalt on the bank of the Yellowstone River below Tower Falls. Yellowstone National Park, Wyoming. 1911. Washington, DC & Vicinity Aerial Photographs, 1945-1949 Looking north from Eagle Dove Trail to Wizard Island and Llao Rock, Devils Backbone. Crater Lake National Park, Oregon. 1925. Opal Canyon, Crooked River, showing basalt of inner canyon in contact with stratified beds of outer canyon. 1903. Washington, DC & Vicinity Aerial Photographs, 1945-1949 Stereo studies about Mount Blackmore, M.T. Cascades, head of Middle Creek. Gallatin County, Montana. 1872. Needles eroded in basalt on the bank of the Yellowstone River below Tower Falls. Yellowstone National Park, Wyoming. 1911.