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South wall of Purgatoire Canyon near Sopris: a general view showing the Raton basal conglomerate, the unconformity between a coal bed and Vermejo formation. Las Animas County, Colorado. 1909. Plate 13-A, with graphics, in U.S. Geological Survey Professional Paper 101. 1917.
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Near view of White Mountain, consists of pink sandstone and shale of the Wasatch group below and the light-green beds of the Green River formation above. Sweetwater County, Wyoming. 1914. Plate 15-C in U.S. Geological Survey Bulletin 612. 1915.


    map background search result map search result map South wall of Purgatoire Canyon near Sopris. Las Animas County, Colorado. 1909. Near view of White Mountain, consists of pink sandstone and shale of the Wasatch group below and the light-green beds of the Green River formation above. Sweetwater County, Wyoming. 1914. Mammoth Cave National Park, Kentucky. Formation at the top of Frozen Niagara. Mammoth Cave National Park, Kentucky. 1925. Mammoth Cave National Park, Kentucky. Formation at the top of Frozen Niagara. Mammoth Cave National Park, Kentucky. 1925. South wall of Purgatoire Canyon near Sopris. Las Animas County, Colorado. 1909. Near view of White Mountain, consists of pink sandstone and shale of the Wasatch group below and the light-green beds of the Green River formation above. Sweetwater County, Wyoming. 1914.