Title

Bedrock Bristol Photo 1

Creator

David P. West Jr.

Preview

Contributing Institution

Maine Geological Survey

Document Type

Image

Identifier

69761

Description

Photo 1: Dark gray, fine-grained diabase dike cutting previously deformed and metamorphosed migmatites of the Cross River Formation (O0cr). Diabase is the youngest rock type in the Bristol quadrangle (probably about 200 million years old) and formed when hot relatively silica-poor fluid magma flowed rapidly up through cracks in the surrounding older rocks and then solidified. The locations of these dikes are shown on the map with red symbols. Thurston Point, north side of Pemaquid Harbor, Bristol. Yellow field notebook for scale.
Project Name: STATEMAP Bristol Bedrock24k

Exact Creation Date

7-13-2021

Location

Bristol

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.