| State | Arizona |
|---|---|
| Name | Early Proterozoic metamorphic rocks |
| Geologic age | Early Proterozoic |
| Lithologic constituents | Major
Metamorphic > Metaigneous > Metavolcanic (Amphibolite)
Metamorphic > Gneiss (Amphibolite)
Metamorphic > Metasedimentary (Amphibolite)
|
| References | Richard, S.M., Reynolds, S.J., Spencer, J.E., and Pearthree, P.A., 2000, Geologic Map of Arizona: Arizona Geological Survey Map 35, 1 sheet, scale 1:1,000,000.Anderson, P., 1989, Stratigraphic framework, volcanic-plutonic evolution, and vertical deformation of the Proterozoic volcanic belts of central Arizona, in Jenney, J.P., and Reynolds, S.J., editors, Geologic evolution of Arizona: Arizona GeConway, C.M., and Silver, L.T., 1989, Early Proterozoic rocks (1710 - 1615 Ma) in central and southeastern Arizona, in Jenney, J.P., and Reynolds, S.J., editors, Geologic evolution of Arizona: Arizona Geological Society Digest 17, p. 165-18 |
| NGMDB product | |
| Counties | Cochise - Coconino - Gila - Graham - La Paz - Maricopa - Mohave - Pima - Pinal - Santa Cruz - Yavapai - Yuma |