Mafic intrusive rocks

Sierra Madre--Gabbro of Elkhorn Mountain; age 1,800 Ma. Medicine Bow Mountains--Mullen Creek 5 and Lake Owens 7 Mafic Complexes; older than 1,700 Ma.
State Wyoming
Name Mafic intrusive rocks
Geologic age Early Proterozoic
Lithologic constituents
Major
Igneous > Plutonic > Gabbroicmafic
References
NGMDB product
Counties Albany - Carbon