This map details the region from Prescott (Ft. Whipple) and Camp Verde north through the Grand Canyon and Marble Canyon, today's Canyonlands National Park, Moab, and the southern portion of the Great Salt Lake. It locates the Wasatch and Uintah Mountains, the Bad Land Cliffs (Book Cliffs), the San Juan River, etc. and has remarkable detail of the watershed and topography. This thematic map identifies ten geological types through color including: Tertiary, Cretaceous, Jurassic, Trias, Permian, Carboniferous, Silurian, Archaean, Trachyte, Rhyolite & Andesite, and Basalt. Engraved by J.H. Renshawe. A colorful and handsome map.

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Condition: A

Issued folding on a clean sheet with a couple of tiny splits at the fold junctions.