| State | South Dakota |
|---|---|
| Name | Metagraywacke Unit 1 |
| Geologic age | Early Proterozoic |
| Lithologic constituents | Major
Metamorphic > Schist > Mica-schist
Metamorphic > Metasedimentary > Metaclastic > Quartzite
|
| 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 | Pennington |