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A. Digital elevation model (DEM) and geology of the Greenville area. The Carrabassett Formation is shown in gray and the Moxie pluton in purple. All of these mountains are hornfels, with the exception Big Squaw, which is largely injection hornfels mingling with a fine-grain border facies of the Moxie pluton. Geophysical work and lineations in the Moxie indicate that the intrusion dips southeast, explaining the asymmetry of the contact aerole. Beyond the contact aerole the lowlands are underlain by the Carrabasset slate (gray) and pre-Devonian metasedimentary rocks (yellow). Sites 1 (hornfels) and 2 (gabbro) locate the exposures pictured in the previous figure.
B. Northeast view from the slope of Big Squaw Mountain showing the hornfels mountains on the other side of Moosehead Lake. The southern part of Moosehead lake is underlain by the Moxie pluton.

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Image by Lindley Hanson.
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