The 500 million year geologic history of Casco Bay

June 24 2021 7pm to 8pm

David West, Department of Geology, Middlebury College

This presentation is a general overview of the nearly 500 million year geologic history preserved in the bedrock of the Casco Bay region of mid-coastal Maine. Although the current coast of Maine is relatively tame in terms of dramatic geologic activity, this has not always been the case. This presentation will provide insight into the dramatic history preserved in the geologic features of Casco Bay, including violent volcanic eruptions, massive earthquakes, and burial beneath over a mile of glacial ice. The spatial distribution of different rock types across the region, and how they relate to the present day landscape, will also be discussed.


Dave West is a Professor of Geology at Middlebury College in Vermont who specializes in unraveling the bedrock geologic history of the northern Appalachians, with a particular interest in coastal Maine geology.  A North Carolina native, Dave obtained his Masters and Ph.D. in Geological Sciences from the University of Maine and has been conducting geological research in Maine for over 30 years.  Prior to arriving at Middlebury, Dave taught at Bowdoin College, Lafayette College in Pennsylvania, and Earlham College in Indiana.

The lecture is available either in-person or by zoom

Bath Freight Shed
27 Commercial St
Bath Maine 04530