Title

Bedrock Bristol Photo 2

Creator

David P. West Jr.

Preview

Contributing Institution

Maine Geological Survey

Document Type

Image

Identifier

69762

Description

Photo 2: Light-colored intrusive igneous rock (granite pegmatite) cutting across rusty-weathering gneissic rocks of the Cross River Formation (O0cr). The granite dike formed when hot silica-rich fluid magma flowed up through cracks in the gneiss deep underground and then solidified in place. Pegmatites are a very coarse grained variety of granite and are composed primarily of cream-colored feldspar, light gray quartz, and lesser amounts of mica (often both biotite and muscovite). Roadside outcrop, Bristol Consolidated School, Bristol.
Project Name: STATEMAP Bristol Bedrock24k

Exact Creation Date

7-12-2021

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.