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U.S. Geological Survey Open-File Report 03-221
A Pictorial Survey of the Bedrock Beneath Western Cape Cod, Massachusetts

Thin Section of 95MW0208

Photomicrograph of Mylonite

Undulatory quartz showing partial recrystallization and extensive subgrain development in mylonite. Sphene grain is extensively fractured and embayed. Muscovite occurs as a fine crystal mesh.

Undulatory quartz showing partial recrystallization and extensive subgrain development in mylonite (95MW0208). Sphene grain is extensively fractured and embayed. Muscovite occurs as a fine crystal mesh.  Click here for a zip file with full resolution image.

ms: muscovite
qtz: quartz
sph: sphene

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