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

Metagabbro

Dark-green sills of amphibolite, actinolite schist, greenstone, and serpentine. Thickness of sills variable, up to 1,000 ft (305 m).
StateSouth Dakota
NameMetagabbro
Geologic ageProterozoic | Paleoproterozoic
Original map labelXmg
Primary rock typeamphibolite
Secondary rock typeschist
Other rock typesgreenstone; serpentinite
Lithologic constituents
Major
Metamorphic > Metaigneous > Serpentinite
Metamorphic > Metaigneous > Greenstone
Metamorphic > Schist
Metamorphic > Amphibolite
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 - Lawrence - Pennington

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