This engraved woodblock of a “Fault with thrown beds flexed upward” was prepared by the Government Printing Office in Washington, D.C.; the print was published in 1875 as Figure 71 (p.184) in Report of the Exploration of the Colorado River of the West and Its Tributaries. Explored in 1869, 1870, 1871, and 1872, under the direction of the Secretary of the Smithsonian Institution by John Wesley Powell (1834-1902).
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