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Contributing Institution
Maine Geological Survey
Document Type
Image
Identifier
72131
Description
Photo 5: A view towards the north of the foliated porphyritic granite to granodiorite of the South Pond Porphyry (Dsp) that underlies Eastern Egg Rock. Close examination of the photo reveals a popcorn-like texture in the rocks which reflects the presence of large cream-colored alkali feldspar crystals set in a darker colored matrix rich in biotite (black mica), quartz, and finer grained feldspars (a close-up view is provided in Photo 6). North-south striking, vertically dipping foliation can be seen in this photo and is a result of superimposed tectonic stresses on the previously crystallized igneous rocks. East side of Eastern Egg Rock, Saint George.
Project Name: STATEMAP New Harbor Bedrock24k
Exact Creation Date
9-16-2022
Location
Saint George
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.
Keywords
bedrock mapping; outcrop; STATEMAP; New Harbor