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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;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Bradley, W.H. Collection,
Colorado (CO),
Photographers,
Utah (UT),
photo print
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;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Bradley, W.H. Collection,
Colorado,
Photographers,
Utah,
photo print
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;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Bradley, W.H. Collection,
Colorado (CO),
Photographers,
Utah (UT),
photo print
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;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Bradley, W.H. Collection,
Colorado (CO),
Photographers,
Utah (UT),
photo print
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,
Garfield County, Colorado,
Photographers,
photo print
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;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Bradley, W.H. Collection,
Photographers,
Rio Blanco County, Colorado,
photo print
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,
Garfield County, Colorado,
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. 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: Bradley, W.H. Collection,
Garfield County, Colorado,
Photographers,
photo print
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,
Garfield County, Colorado,
Photographers,
photo print
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;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Bradley, W.H. Collection,
Colorado (CO),
Photographers,
Utah (UT),
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. 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,
Garfield County, Colorado,
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. 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,
Garfield County, Colorado,
Photographers,
photo print
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;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Bradley, W.H. Collection,
Colorado (CO),
Photographers,
Utah (UT),
photo print
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;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Bradley, W.H. Collection,
Colorado,
Photographers,
Utah,
photo print
Microfossil of the oil shale of the Green River formation: Zygospore, perhaps desmid. Colorado or Utah. 1925. Plate 23, figure 4, U.S. Geological Survey. Professional paper 168. 1931.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Bradley, W.H. Collection,
Colorado (CO),
Photographers,
Utah (UT),
photo print
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,
Photographers,
Rio Blanco County, Colorado,
photo print
Microfossil of the oil shale of the Green River formation: Microspora sp. cf. M. pachyderma (Wille) Lagerheim. Colorado or Utah. 1925. Plate 21, figure 7, U.S. Geological Survey. Professional paper 168. 1931.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Bradley, W.H. Collection,
Colorado (CO),
Photographers,
Utah (UT),
photo print
Microfossil of the oil shale of the Green River formation: Chain of conidia resembling those of several genera of Hyphomycetes.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Bradley, W.H. Collection,
Colorado (CO),
Photographers,
Utah (UT),
photo print
Microfossil of the oil shale of the Green River formation: larva of Tabanidae. Colorado or Utah. 1927. Plate 28, figure 1, U.S. Geological Survey. Professional paper 168. 1931.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Bradley, W.H. Collection,
Colorado (CO),
Photographers,
Utah (UT),
photo print
Microfossil of the oil shale of the Green River formation: Quadrula minuta Bradley, n.sp. Colorado or Utah. 1925. Plate 25, figure 7, U.S. Geological Survey. Professional paper 168. 1931.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Bradley, W.H. Collection,
Colorado (CO),
Photographers,
Utah (UT),
photo print
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