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Microfossil of the oil shale of the Green River formation: Triangular pollen with very large apertures. Colorado or Utah. 1925. Microfossil of the oil shale of the Green River formation: Triangular pollen with very large apertures. Colorado or Utah. 1925. Plate 25, figure 2, U.S. Geological Survey. Professional paper 168. 1931. Categories: Image; Tags: Bradley, W.H. Collection, Fossils and Dinosaurs, Photographers, photo print Microfossil of the oil shale of the Green River formation: spore similar to the conidia of Brachysporium sp. Colorado or Utah. 1925. Microfossil of the oil shale of the Green River formation: spore similar to the conidia of Brachysporium sp. Colorado or Utah. 1925. Plate 20, figure 7, U.S. Geological Survey. Professional paper 168. 1931. Categories: Image; Tags: Bradley, W.H. Collection, Fossils and Dinosaurs, Photographers, photo print 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 View in Bryce Canyon from rim. Bryce Canyon National Park, Utah. 1925. Album caption: View in Bryce Canyon from rim. Bryce Canyon National Park, Utah. July 19, 1925. (Panorama with photo no. 156). No index card. Note: Panorama with bwh00156 Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bradley, W.H. Collection, Bryce Canyon National Park, Bryce Canyon National Park Collection, National Parks, Photographers, All tags... panorama, photo print, Fewer tags 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 Specimen of moderately rich oil shale showing fine laminations and the characteristic loop bedding. Garfield County, Colorado. 1924. Specimen of moderately rich oil shale showing fine laminations and the characteristic loop bedding. The zone a little below the center is most typical and represents the edges of polygons formed by sun cracks. From east fork of Parachute Creek T.5 S., R. 95 W. Garfield County, Colorado. 1924. Plate 17-B in U.S. Geological Survey. Professional paper 168. 1931. Categories: Image; Tags: Bradley W.H. Collection, Photographers, Specimens, photo print 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 Microfossil of the oil shale of the Green River formation: Tetraedron sp. cf. T. regulare. Microfossil of the oil shale of the Green River formation: Tetraedron sp. cf. T. regulare. var. torsum (Turner) Brunnthaler. Colorado or Utah. 1925. Plate 21, figure 6, U.S. Geological Survey. Professional paper 168. 1931. Categories: Image; Tags: Bradley, W.H. Collection, Fossils and Dinosaurs, Photographers, photo print Microfossil of the oil shale of the Green River formation: Spores. Colorado or Utah. 1925. Microfossil of the oil shale of the Green River formation: Spores. Colorado or Utah. 1925. Plate 23, figure 5, U.S. Geological Survey. Professional paper 168. 1931. Categories: Image; Tags: Bradley, W.H. Collection, Fossils and Dinosaurs, Photographers, 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 Microfossil of the oil shale of the Green River formation: larva of Chironomidae. Colorado or Utah. 1927. Microfossil of the oil shale of the Green River formation: larva of Chironomidae. Colorado or Utah. 1927. Plate 28, figure 1 and 3, U.S. Geological Survey. Professional paper 168. 1931. Categories: Image; Tags: Bradley, W.H. Collection, Fossils and Dinosaurs, Photographers, photo print Varves in organic marlstone from a bed about 1800 feet above the base of the Green River formation on Clear Creek in sec. Garfield County, Colorado. 1927. Varves in organic marlstone from a bed about 1800 feet above the base of the Green River formation on Clear Creek in sec. 9, T. 5 S., R. 98 W. The darker bands of rock contain the most organic matter. Magnified 4 times. Garfield County, Colorado. 1927. Plate 11 in U.S. Geological Survey. Professional paper 158. 1930. Categories: Image; Tags: Bradley W.H. Collection, Formations, Photographers, Rocks, photo print Microfossil of the oil shale of the Green River formation: Pollen similar to that of Quercus pinus. Colorado or Utah. 1925. Microfossil of the oil shale of the Green River formation: Pollen similar to that of Quercus pinus. Colorado or Utah. 1925. Plate 24, figure 4, U.S. Geological Survey. Professional paper 168. 1931. Categories: Image; Tags: Bradley, W.H. Collection, Fossils and Dinosaurs, Photographers, photo print Microfossil of the oil shale of the Green River formation: spores resembling those of Macrosporuim. Colorado or Utah. 1925. Microfossil of the oil shale of the Green River formation: spores resembling those of Macrosporuim. sp. Colorado or Utah. 1925. Plate 20, figure 9, U.S. Geological Survey. Professional paper 168. 1931. Categories: Image; Tags: Bradley, W.H. Collection, Fossils and Dinosaurs, Photographers, photo print 1 2 3 4 5 »