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Generalized geologic map of the Eocene Absaroka volcanic field

By Yellowstone Volcano Observatory 1972 (approx.)
Generalized geologic map of the Eocene Absaroka volcanic field
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Detailed Description

Generalized geologic map of the Eocene Absaroka volcanic field (modified from Smedes and Prostka, 1972 and “Geology of Wyoming”). Black masses represent locations of volcanic centers (see Chadwick, 1970). Single dot-dashed line is the boundary of Yellowstone National Park.

Sources/Usage

Public Domain.