Filters: Tags: Professional Papers (X) > partyWithName: U.S. Geological Survey (X) > partyWithName: Bradley, W.H. (X)

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Polished transverse section of the digitate reef shown in Bradley photo 248: natural size. Uintah County, Utah. 1925. Polished transverse section of the digitate reef shown in Bradley photo 248: natural size. Specimen is from Hells Canyon, sec. 22 T. 10 S., R. 25 E. Uintah County, Utah. September 15, 1925. Plate 42-A in U.S. Geological Survey. Professional paper 154. 1929. Categories: Image; Tags: Bradley, W.H. Collection, Photographers, Professional Papers, Specimens, Utah Professional Paper 154, All tags... photo print, Fewer tags Thin section of a recent algae reef from Green Lake: showing the typical spongy structure of the microcrystalline calcite produced by a felt of fresh water algae. Onondaga County, New York. 1926. Thin section of a recent algae reef from Green Lake: showing the typical spongy structure of the microcrystalline calcite produced by a felt of fresh water algae. This also shows a portion of the recrystallized and denser surface layer in the upper left quadrant. Enlarged 30 diameters. Onondaga County, New York. July 1926. Plate 30-B in U.S. Geological Survey. Professional paper 154. 1929. Categories: Image; Tags: Bradley, W.H. Collection, New York Professional Paper 154, Photographers, Professional Papers, photo print Algal pebbles formed chiefly of Chlorellopsis coloniata Reis in a matrix of ostracode limestone, natural size. Garfield County, Colorado. August 18, 1925. Algal pebbles formed chiefly of Chlorellopsis coloniata Reis in a matrix of ostracode limestone, natural size. Garfield County, Colorado. August 18, 1925. Plate 46-B in U.S. Geological Survey. Professional paper 154. 1929. Categories: Image; Tags: Bradley, W.H. Collection, Colorado Professional Paper 154, Photographers, Professional Papers, photo print Confervites Mantiensis and associated coprolites; photomicrograph of cellular parts of Confervites Mantiensis Bradley: polished specimen showing sparse colony of confervities Mantiensis in a partly silicified area of an algae reef from the "Mantis beds" The white areas are calcite; the darker ones chalcedonic silica; enlarged 10 diameters.San Pete County, Utah. 1925. Confervites Mantiensis and associated coprolites; photomicrograph of cellular parts of Confervites Mantiensis Bradley: polished specimen showing sparse colony of confervities Mantiensis in a partly silicified area of an algae reef from the "Mantis beds" The white areas are calcite; the darker ones chalcedonic silica; enlarged 10 diameters. Specimen is originally from sec. 6, T. 18 S., R. 3 E. San Pete County, Utah. July 20, 1925. Plate 33-C in U.S. Geological Survey. Professional paper 154. 1929. Categories: Image; Tags: Bradley, W.H. Collection, Photographers, Photomicrographs, Professional Papers, Specimens, All tags... Utah Professional Paper 154, photo print, Fewer tags Small area of the polished specimen in Bradley 245; this shows a part of the oolitic sandstone which contains fragments of micro crystalline calcite with ferruginous oolite grains suspended in the positions in which they formed; fragments of algal limestone consisting almost wholly of Chlorellopsis and an unusually large oolite grains that show the wide banding characteristic of all the oolites in this bed. Rio Blanco County, Colorado. Small area of the polished specimen in Bradley 245; this shows a part of the oolitic sandstone which contains fragments of micro crystalline calcite with ferruginous oolite grains suspended in the positions in which they formed; fragments of algal limestone consisting almost wholly of Chlorellopsis and an unusually large oolite grains that show the wide banding characteristic of all the oolites in this bed. Enlarged 5 diameters. Specimen is from the basal part of an algae reef on the north side of White River, in the SW 1/4 sec. 30, T. 1 N., R. 95 W. Rio Blanco County, Colorado. Plate 48-B in U.S. Geological Survey. Professional paper 154. 1929. Categories: Image; Tags: Bradley, W.H. Collection, Colorado Professional Paper 154, Photographers, Professional Papers, Specimens, All tags... photo print, Fewer tags Photomicrograph of a part of the organic marlstone shown in Bradley photo 325, illustrating the regular spacing of the dark laminae; the thin section was cut abnormally thick so as to bring out the fore feebly colored organic layers. Garfield County, Colorado. 1927. Photomicrograph of a part of the organic marlstone shown in Bradley photo 325, illustrating the regular spacing of the dark laminae; the thin section was cut abnormally thick so as to bring out the fore feebly colored organic layers. Enlarged 18 diameters. Garfield County, Colorado. 1927. Plate 12-B in U.S. Geological Survey. Professional paper 158. 1930. Categories: Image; Tags: Bradley, W.H. Collection, Colorado Professional Paper 158, Photographers, Photomicrographs, Professional Papers, All tags... photo print, Fewer tags Steep false bedding in a fine grained muddy sandstone of the delta facies in a small canyon tributary to Minnie Maud Creek; the steepness of the bedding is local and apparently due to differential compaction; near the Duchesne-Uintah County line. Utah. 1925. Steep false bedding in a fine grained muddy sandstone of the delta facies in a small canyon tributary to Minnie Maud Creek; the steepness of the bedding is local and apparently due to differential compaction; near the Duchesne-Uintah County line. Utah. September 11, 1925. Plate 9-A, U.S. Geological Survey. Professional paper 168. 1931. Categories: Image; Tags: Bradley, W.H. Collection, Photographers, Professional Papers, Utah Professional Paper 168, photo print Photomicrograph showing detail of the varves in the rich oil shale specimen in Bradley photo 321; the organic laminae indicated by marks are themselves finely laminated. Photomicrograph showing detail of the varves in the rich oil shale specimen in Bradley photo 321; the organic laminae indicated by marks are themselves finely laminated. The mineral laminae contain considerable organic matter, but they are readily distinguished by their coarser grain and greater thickness. Enlarged 320 diameters. Garfield County, Colorado. 1927. Plate14-A in U.S. Geological Survey. Professional paper 158. 1930. Categories: Image; Tags: Colorado Professional Paper 158, Photomicrographs, Professional Papers, Specimens, photo print Photomicrograph of a thin section of specimen from an analcite crystal bed, showing the idiomorphism of crystals and the abundance of dust like inclusions; the jet-black pyrite and the clear gray areas between the crystals are holes in the section. Uintah County, Utah. 1925. Photomicrograph of a thin section of specimen from an analcite crystal bed, showing the idiomorphism of crystals and the abundance of dust like inclusions; the jet-black pyrite and the clear gray areas between the crystals are holes in the section. From a bed about 750 feet above the base of the Green River formation in the canyon of the White River, sec. 27, T. 9S. R.25 E., enlarged 36 diameters. Uintah County, Utah. September 14, 1925. Plate 1-A in U.S. Geological Survey. Professional paper 158. 1930. Categories: Image; Tags: Bradley, W.H. Collection, Formations, Photographers, Photomicrographs, Professional Papers, All tags... Specimens, Utah Professional Paper 158, photo print, Fewer tags Recent algal deposit from Green Lake, the upper rough part is grayish green, owing to the dense felt algae, whose tips were only incrusted with lime. Onondaga County, New York. 1926. Recent algal deposit from Green Lake, the upper rough part is grayish green, owing to the dense felt algae, whose tips were only incrusted with lime. The lower, smoother part, which was buried in a soft limy mud is yellowish gray, dense and without living algae. Onondaga County, New York. July 1926. Plate 29-B in U.S. Geological Survey. Professional paper 154. 1929. Categories: Image; Tags: Bradley, W.H. Collection, New York Professional Paper 154, Photographers, Professional Papers, photo print Upper surface of a tabellate reef with spongy surface; each molariform head is more or less columnar in section, though many of them are very irregular and complexly intergrown; 75% of natural size.Garfield County, Colorado. 1925. Upper surface of a tabellate reef with spongy surface; each molariform head is more or less columnar in section, though many of them are very irregular and complexly intergrown; 75% of natural size. Specimen is from about 530 feet above the base of the Green River formation on the divide between Douglas and East Salt Creeks. Garfield County, Colorado. August 18, 1925. Plate 43-A in U.S. Geological Survey. Professional paper 154. 1929. Categories: Image; Tags: Bradley, W.H. Collection, Colorado Professional Paper 154, Formations, Photographers, Professional Papers, All tags... Specimens, photo print, Fewer tags Specimen of mosaic breccia in oil shale showing the contrast on a weathered surface between the flakes of very rich oil shale and the slightly less rich matrix; Uintah County, Utah. 1925. Specimen of mosaic breccia in oil shale showing the contrast on a weathered surface between the flakes of very rich oil shale and the slightly less rich matrix; Uintah County, Utah. September 10, 1925. Plate 15-A, U.S. Geological Survey. Professional paper 168. 1931. Categories: Image; Tags: Bradley, W.H. Collection, Photographers, Professional Papers, Specimens, Utah Professional Paper 168, All tags... photo print, Fewer tags Lower sandy part of the Bridger formation resting in evident conformity on the Green River formation, approximately in sec. Duchesne County, Utah. September 6, 1925. Lower sandy part of the Bridger formation resting in evident conformity on the Green River formation, approximately in sec. 21, T. 11 S., R. 17: boundary of formation is about one third of the way up from bottom on the left side extending across to a slightly lower position on the right. Duchesne County, Utah. September 6, 1925. Plate 12-B, with graphics, U.S. Geological Survey. Professional paper 168. 1931. Categories: Image; Tags: Bradley, W.H. Collection, Formations, Photographers, Professional Papers, Utah Professional Paper 168, All tags... photo print, Fewer tags Large lens of oil shale and organic marlstone in the muddy sandstone of the delta facies of the Green River formation; by differential compaction the top of this lens (upper right) has been depressed several feet below its original position: Near the boundary between Duchesne and Uintah Counties, Utah.1925. Large lens of oil shale and organic marlstone in the muddy sandstone of the delta facies of the Green River formation; by differential compaction the top of this lens (upper right) has been depressed several feet below its original position: Near the boundary between Duchesne and Uintah Counties, Utah. September 9, 1925. Plate 10-A, with graphics, U.S. Geological Survey. Professional paper 168. 1931. Categories: Image; Tags: Bradley, W.H. Collection, Formations, Photographers, Professional Papers, Utah Professional Paper 168, All tags... photo print, Fewer tags Polished vertical section of a reef formed of recumbent discoid colonies of Chlorellopsis coloniata Reis. Duchesne County, Utah. 1925. Polished vertical section of a reef formed of recumbent discoid colonies of Chlorellopsis coloniata Reis. The colonies near the center and upper parts of the specimen show faintly the concentric growth layers, which are convex outward along the radii of the colonies, natural size. Specimen is from 3700 feet above the base of the Green River formation on the west side of the Duchesne-Price mail road; T.6 S, R.7 W. Duchesne County, Utah. August 31, 1925. Plate 41-A in U.S. Geological Survey. Professional paper 154. 1929. Categories: Image; Tags: Bradley, W.H. Collection, Formations, Photographers, Professional Papers, Specimens, All tags... Utah Professional Paper 154, photo print, Fewer tags Photomicrograph of a specimen from an analcite crystal bed with a distinctly tuffaceous matrix; showing sub parallel orientation of the large biotite flakes, some of which are deeply embedded in the analcite crystals. Rio Blanco County, Colorado. 1927. Photomicrograph of a specimen from an analcite crystal bed with a distinctly tuffaceous matrix; showing sub parallel orientation of the large biotite flakes, some of which are deeply embedded in the analcite crystals. The medium toned gray matrix is chalcedony. From a bed in the north wall of White River canyon, T. 1 N., R. 103 W., enlarged 80 diameters. Rio Blanco County, Colorado. 1927. Plate 2-A in U.S. Geological Survey. Professional paper 158. 1930. Categories: Image; Tags: Bradley, W.H. Collection, Colorado Professional Paper 158, Photographers, Photomicrographs, Professional Papers, All tags... Specimens, photo print, Fewer tags Isolated algal head with digitate spongy structure; resembles in form and sculpturing the marine Lithothamnion, natural size. Uintah County, Utah. 1925. Isolated algal head with digitate spongy structure; resembles in form and sculpturing the marine Lithothamnion, natural size. See also Bradley 247 and 248. Specimen is from Hells Canyon, sec. 22 T. 10 S., R. 25 E. Uintah County, Utah. September 15, 1925. Plate 41-B in U.S. Geological Survey. Professional paper 154. 1929. Categories: Image; Tags: Bradley, W.H. Collection, Photographers, Professional Papers, Specimens, Utah Professional Paper 154, All tags... photo print, Fewer tags Microfossil of the oil shale of the Green River formation: spiral thickening of a tracheid. Colorado or Utah. 1925. Microfossil of the oil shale of the Green River formation: spiral thickening of a tracheid. Colorado or Utah. 1925. Plate 24, figure 5, U.S. Geological Survey. Professional paper 168. 1931. Categories: Image; Tags: Bradley, W.H. Collection, Colorado Professional Paper 168, Formations, Fossils and Dinosaurs, Photographers, All tags... Professional Papers, photo print, Fewer tags Microfossil of the oil shale of the Green River formation: spore of Pestalozzia. sp? Colorado or Utah. 1925. Microfossil of the oil shale of the Green River formation: spore of Pestalozzia. sp? enlarged 1130 times. Colorado or Utah. 1925. Plate 19, figure 3, U.S. Geological Survey. Professional paper 168. 1931. Categories: Image; Tags: Bradley, W.H. Collection, Colorado Professional Paper 168, Formations, Fossils and Dinosaurs, Photographers, All tags... Professional Papers, photo print, Fewer tags Microfossil of the oil shale of the Green River formation: group of spores suggesting sorus of Uromyces. sp. Colorado or Utah. 1925. Microfossil of the oil shale of the Green River formation: group of spores suggesting sorus of Uromyces. sp. Colorado or Utah. 1925. Plate 20, figure 8, U.S. Geological Survey. Professional paper 168. 1931. Categories: Image; Tags: Bradley, W.H. Collection, Colorado Professional Paper 168, Formations, Fossils and Dinosaurs, Photographers, All tags... Professional Papers, photo print, Fewer tags 1 2 3 4 »