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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:  03MW2622

DATE: 7/11/2000

Sample: 03MW2622 - Orthogneiss


An orthogneiss with a composition of plagioclase (40%), K-feldspar (25%), quartz (25%), chlorite (5%), muscovite (2%), epidote (2%), and trace sphene and oxides, sample 03MW2622 shows less evidence of metamorphism than most of the other gneissic samples. 8-mm plagioclase porphyroclasts are visible in hand sample. Micas occur in 0.5-1 mm-thick bundles, yet no deformational fabrics are recognized.

Latitude: 41.62436

Longitude: -70.53189

Elevation of well site (m): 23.26

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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