Filters: Tags: {"scheme":"http://www.sciencebase.gov/vocab/undefined/DenverHistoryPhotoLibrary/Collections"} (X) > partyWithName: Bradley, W.H. (X) > partyWithName: U.S. Geological Survey (X)

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Varves in organic marlstone from a bed about 1800 feet above the base of the Green River formation. 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, Garfield County, Colorado, Photographers, photo print Cedar Breaks National Monument, Utah. Strong color banding showing advantage of ortho (photographic) plates and a color filter. 1925. Cedar Breaks National Monument, Utah. Strong color banding showing advantage of ortho (photographic) plates and a color filter. Bright spot in the foreground is strong sunlight and shows the effect of over-exposure on color render (on black and white film). July 17, 1925. Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bradley, W.H. Collection, Cedar Breaks National Monument, National Parks, Photographers, photo print