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Mineral Resources > Online Spatial Data > Geology > by state > South Dakota

Upper Metagraywacke

Light- to dark-gray, quartz-mica-feldspar schist, quartz-mica schist, staurolite and garnet-rich schist, metaconglomerate, calc-silicate gneiss, and cummingtonite-quartz schist. Thickness up to 14,000 ft (4,267 m).
StateSouth Dakota
NameUpper Metagraywacke
Geologic ageProterozoic | Paleoproterozoic
Original map labelXgwu
Primary rock typeschist
Secondary rock typemetasedimentary rock
Other rock typesgneiss
Lithologic constituents
Major
Metamorphic > Gneiss
Metamorphic > Metasedimentary > Metaclastic > Metaconglomerate
Metamorphic > Schist
Map references
Martin, J. E., Sawyer, J. F., Fahrenbach, M. D., Tomhave, D. W., and Schulz, L. D., 2004, Geologic Map of South Dakota: South Dakota Geological Survey
Unit references
Martin, J. E., Sawyer, J. F., Fahrenbach, M. D., Tomhave, D. W., and Schulz, L. D., 2004, Geologic Map of South Dakota: South Dakota Geological Survey
Geographic coverageCuster

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