U.S. Geological Survey Open-File Report 03-221
A Pictorial Survey of the Bedrock Beneath Western Cape
Cod, Massachusetts
![]() Altered plagioclase phenocryst partially recrystallized as fine-grained, unaltered plagioclase in granite (95MW0107). Note later matrix muscovite wrapping non-recrystallized grain. Click here for a zip file with full resolution image. kfs: K-feldspar |
|