Acadia Senior College

Course offerings

Evolution of Thinking on the Geology of MDI from 1836 to Now

Duane Braun

Undercroft of St. John Episcopal Church, 315 Main Street, Southwest Harbor.
Geologists have been visiting MDI since 1836 to view the exceptional exposure of a variety of rock types and explain their origin. MDI has been used as a testing ground for fundamental geologic concepts such as the origin of granite and the depression of the crust by the weight of the continental glacier. This course will examine the work on MDI of geologists in the context of the state of geologic knowledge in the eras in which they were working. The emphasis will be on how geologic thinking changed over time with the increase in geologic knowledge since 1836.
About the instructor

Duane Braun holds a PhD from Johns Hopkins University and was a Geosciences Professor at Bloomsburg University, Pennsylvania, where he taught Environmental and Physical Geology, Geomorphology, Hydrogeology, and Field Geology. He also mapped the glacial deposits of northeastern Pennsylvania for the state Geologic Survey, taught Geology for Acadia Senior College, and revised the geologic maps of MDI for the Maine Geologic Survey. Duane and Ruth Braun are coauthors of Guide to the Geology of Mount Desert Island and Acadia National Park.

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