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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
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Overturned and broken head of the pitted reef shown in Bradley photo 165, this shows near the hammer head a hole that contained the nucleus. It also shows the eccentric growth layers, which may be annual, and near the top of head (lower edge of photograph near the center) several open pit tubes. These are indistinct, partly because they are weathered and partly also because they are somewhat overgrown with algal deposits as the reef formed. Moffat County, Colorado. August 2, 1925. Plate 39-A in U.S. Geological Survey. Professional paper 154. 1929.
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Thin section of a rich oil shale bed from asphalt tunnel, sec. 1, T. 7 S., R. 98 W., showing figured organic material embedded in a structure less groundmass. This photomicrograph shows the spines of insect larvae, probably a species of Oestridae still arranged in tiers. It also shows part of larval skins (the large black areas) and fragments of the eyes and wings of minute adult insects. C.A. Davis thin section was made prior to 1916: enlarged 110 times. Garfield County, Colorado. Plate 18, U.S. Geological Survey. Professional paper 168. 1931.
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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.
    map background search result map search result map Cedar Breaks National Monument, Utah. Strong color banding showing advantage of ortho (photographic) plates and a color filter. 1925. View in Bryce Canyon from rim. Bryce Canyon National Park, Utah. 1925. Overturned and broken head of the pitted reef. Moffat County, Colorado. 1925. Cedar Breaks National Monument, Utah. Strong color banding showing advantage of ortho (photographic) plates and a color filter. 1925. View in Bryce Canyon from rim. Bryce Canyon National Park, Utah. 1925. Overturned and broken head of the pitted reef. Moffat County, Colorado. 1925.