skip headerUSGS: science for a changing world -
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:  80MW0001

DATE: 5/3/2001

Sample: 80MW0001 - Orthogneiss


An orthogneiss, sample 80MW0001 contains plagioclase (45%), K-feldspar (40%), quartz (8%), chlorite (3%), muscovite (2%), oxides (1%), and trace biotite. Biotite has been almost completely replaced by chlorite. Plagioclase shows a variable grain size and albite twinning in some, but not all, porphyroclasts. Calcite veins crosscut the foliation and are not included in modal estimates.

Latitude: 41.63639

Longitude: -70.58239

Elevation of well site (m): 32.41

Elevation of the upper
bedrock surface (m):

Elevation of the
top of casing (m):

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

Zip file with full resolution image. skip navbar

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

skip footer
[an error occurred while processing this directive]