| State | South Dakota |
|---|---|
| Name | Metabasalt |
| Geologic age | Early Proterozoic |
| Lithologic constituents | Major
Metamorphic > Metaigneous > Metavolcanic > Metabasaltalkalic metabasalt
Metamorphic > Schist > Amphibole-schistactinolite schist, iron-rich schist
Metamorphic > Metaigneous > Greenstone
|
| 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, GM 10, scale 1:500,000. |
| NGMDB product | |
| Counties | Custer - Lawrence - Pennington |