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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:  02MW2000

DATE: 3/7/2002

Sample: 02MW2000 - Granite


Sample 02MW0200 is a granodiorite with the assemblage plagioclase (60%), quartz (18%), K-feldspar (15%), biotite (5%), chlorite (1%), oxides (1%), and trace epidote and sericite/muscovite. Plagioclase grains show albite and pericline twinning and occur as porphyries and matrix grains. Some plagioclase grains are intergrown with K-feldspar. A weak, wavy foliation is defined by micas that wrap feldspar porphyries.

Latitude: 41.64051

Longitude: -70.56152

Elevation of well site (m): 31.52

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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