Reconnaissance Map of the United States Showing the Distribution of the Geologic System So Far as Known

This is a beautiful geological map of the United States showing the distribution of the geologic systems. The color divisions on this map correlate to the type of geologic makeup of the area, such as rock and soil structure. This map is highly detailed and colors have remained bold and crisp. This would make a fantastic framed piece to study or just as a piece of art of the United States.

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