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

Metamorphosed Conglomerate

Gray to grayish-brown, conglomeratic biotite phyllite, siliceous biotite phyllite, mica schist, quartzite, and iron-formation. Thickness up to 2,000 ft (610 m).
StateSouth Dakota
NameMetamorphosed Conglomerate
Geologic ageProterozoic | Paleoproterozoic
Original map labelXcg
Primary rock typephyllite
Secondary rock typeschist
Other rock typesquartzite; iron formation
Lithologic constituents
Major
Sedimentary > Chemical > Banded-iron-formation (Bed)
Metamorphic > Metasedimentary > Metaclastic > Quartzite
Metamorphic > Schist
Metamorphic > Metasedimentary > Metaclastic > Phyllite
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 - Pennington

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