Title

Bedrock Brooks West Photo 8

Creator

David P. West Jr.

Preview

Contributing Institution

Maine Geological Survey

Document Type

Image

Identifier

9683

Description

Photo 8. Fine-grained mylonitic gneiss of the Ray Corner Mylonite Suite (rcm) cut by light gray veins of pseudotachylyte. Sudden, brittle failure at depth in the earth can generate intense frictional heating which causes melting along the fault surface. The melt then invades any open fractures and solidifies instantly, producing a rock similar to volcanic glass, called pseudotachylyte. This is an indicator of ancient faulting that probably produced earthquakes. Pavement outcrop approximately 700 meters west-northwest (N80W) of Ray Corner, Knox.
Project Name: Bedrock Geology Brooks West

Exact Creation Date

6-8-2012

Location

Knox

Supplemental Rights

Credit must be given to the photographer and the Maine Geological Survey when this photo is displayed, reproduced, distributed and/or used in derivative works.