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DUANE BRAUN’s interest in geology began at age eight, when he collected fossils on the Helderberg escarpment in upstate New York.  He went onto earn a BS in Geology at SUNY, Fredonia, in 1970, a MS in 1971 and PhD in Geomorphy in 1976 at The Johns Hopkins University.  Between his MS and PhD work he spent two years in the U.S. Army studying seafloor geology.  From 1975 to 2008 he taught courses in environmental geology and hydrogeology at Bloomsburg University in Pennsylvania.  Over the same period he and a number of field assistants mapped the glacial geology of 9000 square miles of northeastern Pennsylvania for that state’s Geologic Survey.

RUTH BRAUN was brought up in rural western New York State.  She earned a BS in Geology from SUNY at Fredonia,  in 1970 and an MA in Geology from Johns Hopkins University in 1975.  In the mid-1980’s she began to substitute in local school districts.  Starting in 1992 she became an adjunct instructor for the Geology Department at Bloomsburg University where she taught a variety of introductory courses in geology and geography.

After the two authors retired to Mount Desert  Island (MDI) in 2009, they gave geologic presentations and taught courses for the Acadia Senior College on the geology of MDI.  The need for an updated geology guide and more detailed geologic mapping for Acadia National Park led Duane to revise the geologic maps of MDI and the Schoodic Peninsula for the Maine Geologic Survey.

The book begins with a review of basic geologic concepts and then goes through the geologic history of Mount Desert Island. After that there are three different geologic field trips, each with a number of stops, that can be made around the Island and Acadia National Park.  At each stop there is description and discussion about the geologic features at that stop. Following those field trips is the geologic history of the Schoodic Peninsula and the portion of Acadia National Park there.  Finally there is a geologic field trip around the Park part of the Schoodic Peninsula with a description and discussion of the geologic features at each stop.