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Granite (eastern bedrock)

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Felsic coarse-grained granite, includes white, silty clay weathering residuum which grades downward to a pink, white, and gray siltstone.
State South Dakota
Name Granite (eastern bedrock)
Geologic age Upper Archean
Lithologic constituents
Major
Igneous > Plutonic > Granitic > GraniteFelsic coarse-grained granite.
Minor
Unconsolidated > Fine-detritalIncludes white, silty clay weathering residuum.
Sedimentary > Clastic > SiltstoneA pink, white, and gray siltstone.
Comments Another unit labeled Wgr exists in SD001 and has a different description. Changed unit label to Wgr2 to distinguish this unit from the other.
References

Tomhave, D.W., and Schulz, L.D., 2004, Bedrock Geologic Map Showing Configuration of the Bedrock Surface in South Dakota East of the Missouri River, South Dakota Geological Survey, GM 9, scale 1:500,000.
NGMDB product
Counties Roberts