"Sketch Map Showing the Distribution of the Strata and Eruptive Rocks in the Western Part of the Plateau Province", U.S. Geological Survey (USGS)
Subject: United States - Southwestern
Period: 1881 (dated)
Publication: Annual Report 1881
Color: Printed Color
18 x 29 inches
45.7 x 73.7 cm
Very detailed and strongly colored geological map from the U.S. Geological Surveys. 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 is shown. 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 formations through color including: Tertiary, Cretaceous, Jurassic, Trias, Permian, Carboniferous, Silurian, Archaean, Trachyte Rhyolite & Andesite, and Basalt. Engraved by J.H. Renshawe. A very colorful and handsome map.
Brilliant color, strong impression and full margins. One panel darkened on verso only, a couple tiny fold intersection splits, else fine.