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U.S. Geological Survey Open-File Report 03-221
A Pictorial Survey of the Bedrock Beneath Western Cape Cod, Massachusetts

 Detailed Bedrock Photographskip navbar


SAMPLE_ID:  69MW1707

DATE: 9/25/2002

Sample: 69MW1707 - Orthogneiss


Sample 69MW1707 is a gneiss containing an assemblage of K-feldspar (35%), plagioclase (33%), quartz (30%), biotite (2%), and trace muscovite and oxides. Large, perthitic K-feldspar porphyroclasts are present throughout. Fine-grained, commonly recrystallized quartz, plagioclase, and K-feldspar make up the matrix. A foliation is defined by biotite.

Latitude: 41.650249

Longitude: -70.589119

Elevation of well site (m): 44.17

Elevation of the upper
bedrock surface (m):

Elevation of the
top of casing (m):

Total thickness of strata
penetrated by the well (m):

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OFR03-221 Home | Introduction | Bedrock Photographs | GIS Data Catalog

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