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Bright Angel Shale
A silty-shale where the clasts are dominated by quartz. Sample collected from an area typified by interbedded limestones and shale.
Both thin section images were taken at a 400x magnification.
Both thin section images were taken at a 400x magnification.
Bright Angel Shale
Red siltstone lithology of the Bright Angel Shale.
Both thin section images were taken at a 400x magnification.
Both thin section images were taken at a 400x magnification.
Bright Angel Shale
Green clay lithology of the Bright Angel Shale.
Both thin section images were taken at a 400x magnification.
Both thin section images were taken at a 400x magnification.
Brahma Schist
Part of the The Granite Gorge Metamorphic Suite, this is usually considered a metavolcanic, and its mineralogy is dominated by quartz and mica.
Both thin section images were taken at a 400x magnification.
Both thin section images were taken at a 400x magnification.
Blueschist
Dense Blueschist
Blueschist
Thinly banded Blueschist
