1878 General Geologic Map of Colorado
By: Hayden / Department of Interior
Date: 1878 (published) Washington D.C.
Dimensions: 25.5 x 35.25 inches (64.75 x 89.5 cm)
This is a colorful, large format map of Colorado at the end of the 19th century detailing the Geology of the state. The map was published as part of Hayden's "Geological and Geographical Atlas of Colorado and Portions of Adjacent Territory."
As one can assume, the geologic makeup of Colorado is quite varied in age and composition. A key at the top right helps to identify the various layers including Tertiary, Post Cretaceous, Cretaceous, Silurian, Metamorphic, and Eruptive Rocks, to name a few. In all the map give new meaning to the nickname "Colorful Colorado."
Nicknames for various area in the Rockies are given along with the elevation of many of the highest peaks. Rivers and their tributaries can be traced throughout, some of which will lead you to old mining towns that came and went. Early wagon trails and railroads snake their way from end to end of the map.
Condition: Map is in A condition with bright colors on clean paper with wide margins on all sides. Originally folded, the map has been flattened for framing purposes. Minor fold separations have been reinforced on the verso using archival material.
Inventory # 11402
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