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Contributing Institution
Maine Geological Survey
Document Type
Image
Identifier
70124
Description
Photo 4: Close-up view of the top surface of strongly foliated biotite granite within the dioritic gneiss unit (DSdg). Although the deformed granitic rocks shown above are subordinate within this unit, the photo provides a nice example of foliation, the parallel alignment of mineral grains present in many rocks throughout the quadrangle. In this rock, foliation can be seen in the alignment of black mica (biotite) and the elongated shapes of lighter colored quartz and feldspar. Both foliated and non-foliated varieties of granite are present and reflect different times of intrusion relative to ductile deformation. Fiddlers Reach Rd, Phippsburg.
Project Name: STATEMAP Phippsburg Bedrock24k
Exact Creation Date
4-13-2022
Location
Phippsburg
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