Dadeville Complex; Mafic and ultramafic rock

Ultramafic rock including enstatite pyroxenite, layered actinolite-tremolite amphibolite altered locally to serpentine, anthophyllite, and talc; metanorite; metagabbro; hornblendite; garnet-hornblendite, and massive amphibolite.
State Alabama
Name Dadeville Complex; Mafic and ultramafic rock
Geologic age Precambrian to Paleozoic
Lithologic constituents
Major
Igneous > Plutonic > Ultramafic > Pyroxeniteultramafic rock including enstatite pyroxenite
Minor
Metamorphic > Metaigneous > Metaintrusive > Metagabbrometanorite; metagabbro
Metamorphic > Amphibolite (Amphibolite)layered actinolite-tremolite amphibolite altered locally to serpentine, anthophyllite, and talc; and massive amphibolite.
Incidental
Igneous > Plutonic > Ultramafic > Hornblenditehornblendite; garnet-hornblendite
Comments from the USGS Geologic Names lexicon (ref. AL002): Dadeville Complex intruded by the informally named Franklin gneiss, a metamorphosed and deformed batholith-scale granite pluton with abundant outcrops in Heard Co., west-central GA. An Rb-Sr whole rock age of 462+/-4 Ma (Middle Ordovician) on the Franklin provides a minimum age constraint for Dadeville rocks.
References

Szabo, M.W., Osborne, E.W., Copeland, C.W. Jr., and Neathery, T.L., 1988, Geologic Map of Alabama, Geological Survey of Alabama Special Map 220, scale 1:250,000.

USGS Geologic Names lexicon found at: http://ngmdb.usgs.gov/Geolex/

https://ngmdb.usgs.gov/Geolex/search

NGMDB product
Counties Chambers - Tallapoosa