Title

Bedrock 24k Louds Island Photo 10

Creator

David P. West Jr.

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Contributing Institution

Maine Geological Survey

Document Type

Image

Identifier

72148

Description

Photo 10: Garnet-bearing, porphyritic amphibolite of the Greenland Cove Member of the Bucksport Formation (Sbgc). In the case of this rock, porphyritic refers to the larger light colored plagioclase feldspar minerals set in a finer grained matrix of hornblende (an amphibole group mineral) and feldspar. The larger feldspar grains are interpreted to represent relict phenocrysts in a volcanic rock prior to metamorphism. The rocks in this member of the Bucksport Formation are interpreted to represent deformed and metamorphosed Late Silurian volcanic rocks of intermediate to mafic composition. West side of Greenland Cove, Bremen.
Project Name: STATEMAP Louds Island Bedrock24k

Exact Creation Date

6-8-2022

Location

Bremen

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.