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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

95MW0213

SAMPLE_ID:  95MW0213

DATE: 8/27/1998

Sample: 95MW0213 - Granite

GRANITE

A foliated, medium-grained granite, sample 95MW0213 contains K-feldspar, plagioclase, quartz, biotite, and oxides, (this is based solely on hand sample). Large porphyries (up to 1 cm) of perthitic K-feldspar are wrapped by a mica-defined foliation. This rock is slightly fractured.

Latitude: 41.61107

Longitude: -70.54135

Elevation of well site (m): 14.63

Elevation of the upper
bedrock surface (m):
-76.35

Elevation of the
top of casing (m):
 14.51

Total thickness of strata
penetrated by the well (m):
 91.75

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