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Filters: Tags: Professional Papers (X) > partyWithName: Bradley, W.H. (X)

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Upper part of Evacuation Creek member in east wall of Evacuation Creek Canyon in sec. 8 T. 10 S., R. 25 E. Salt Lake meridian; shows numerous ellipsoidal cavities formed by the growth of bladed aggregates of an unknown salt while the beds were still plastic. Uintah County, Utah. September 6, 1925. Plate 5-A, U.S. Geological Survey. Professional paper 168. 1931.
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Microfossil of the oil shale of the Green River formation: ascospore of Letoshareia sp.? enlarged 1130 times. Colorado or Utah. 1925. Plate 19, figure 2, U.S. Geological Survey. Professional paper 168. 1931.
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Southwest across the valley of Minnie Maud Creek; the remarkably flat bench is the top of the Horse Bench sandstone lentil. The inner canyon of Minnie Maud Creek is cut into the sandy deltaic facies of the Green River formation, and the principal oil-shale group is just below the rim of the inner canyon. The road in the foreground furnishes a scale: Near the boundary between Duchesne and Uintah Counties, Utah. September 9, 1925. Plate 9-B, U.S. Geological Survey. Professional paper 168. 1931.
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Photomicrograph of a group of euhedral sanidine and orthoclase crystals isolated from oil shale. The grains are immersed in oil, which has a refractive index of 1.58; enlarged 80 diameters, from a bed in the western part of T. 6S, R. 95 W. Garfield County, Colorado. 1927. Plate 3-B in U.S. Geological Survey. Professional paper 158. 1930.
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Microfossil of the oil shale of the Green River formation: Phacus sp. cf P. caudate Hubner. Colorado or Utah. 1925. Plate 19, figure 7, U.S. Geological Survey. Professional paper 168. 1931.
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Microfossil of the oil shale of the Green River formation: Conidia and sporophores resembling Cladosporium. sp. Colorado or Utah. 1925. Plate 20, figure 6, U.S. Geological Survey. Professional paper 168. 1931.
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Mud cracked organic marlstone bed from Indian Canyon; small calcite pseudomorphs of a salt, probably glauberite, fill the cracks. Note the marked convexity of the polygon surfaces. Duchesne County, Utah. September 2, 1925. Plate 10-B, U.S. Geological Survey. Professional paper 168. 1931.
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Coarse shale breccia in fairly rich oil shale from Piceance Creek: Rio Blanco County, Colorado. 1925. Plate 16-B, U.S. Geological Survey. Professional paper 168. 1931.
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Group of superimposed algae reefs in the upper part of the basal member of the Green River formation near the divide between west Douglas and East Salt Creeks. The man's feet are at the base of the lowest reef, which truncates the shaly sandstone beds below; his shoulders are level with a thin reef that has unusual pencillated structure. The thin dark colored bed at the top of the unit consists of algal pebbles some of which are shown Bradley photo 182. The group is bout 5.5 meters (18 feet) thick. Garfield County, Colorado. August 18, 1925. Plate 29-A in U.S. Geological Survey. Professional paper 154. 1929.
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Microfossil of the oil shale of the Green River formation: Spores. Colorado or Utah. 1925. Plate 23, figure 7, U.S. Geological Survey. Professional paper 168. 1931.