Slickensides made of epidote along the surface of one of several small, inactive, brittle fault s on the Boston Harbor islands.
Location
The MA Geological Survey
Department of Geosciences
269 Morrill Science Center
University of Massachusetts
611 North Pleasant Street
Amherst, MA 01003-9297
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Ph: (413) 545-4814
Fax: (413) 545-1200
stategeologist at geo dot umass dot edu
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