Poe Bridge Mountain Group (ALpbm;7)

Poe Bridge Mountain Group - coarse to fine-grained feldspathic graphite schist, +/- staurolite +/- kyanite +/- sillimanite-muscovite-biotite schist, and garnet-biotite-muscovite schist, and gneiss; locally common pegmatites. Rocks in the area of Turkey Heaven Mountain in Cleburne and Randolph Counties that are here assigned to the Poe Bridge Mountain Group also have been interpreted as part of the Wedowee Group.

State	Alabama
Name	Poe Bridge Mountain Group
Geologic age	Precambrian to Paleozoic
Original map label	pbm
Comments	Printed map includes map units 'pbm, pbmgr, and pbmgt' in one description; split them up here.
Primary rock type	mica schist
Secondary rock type	gneiss
Other rock types	pegmatite
Lithologic constituents	Major Metamorphic > Schistcoarse to fine-grained feldspathic graphite schist, +/- staurolite +/- kyanite +/- sillimanite-muscovite-biotite schist, and garnet-biotite-muscovite schist. Minor Metamorphic > Gneiss Incidental Igneous > Plutonic > Granitic > Leucocratic-granitic > Pegmatite
Map references	Szabo, M. W., Osborne, E. W., Copeland, C. W. Jr., Neathery; T. L., 1988, Geologic Map of Alabama, Geological Survey of Alabama Special Map 220, scale 1:250,000. [http://www.ogb.state.al.us/ogb/ogb_gisdata/algeomap.zip]
Unit references	Szabo, M. W., Osborne, E. W., Copeland, C. W. Jr., Neathery; T. L., 1988, Geologic Map of Alabama, Geological Survey of Alabama Special Map 220, scale 1:250,000. [http://www.ogb.state.al.us/ogb/ogb_gisdata/algeomap.zip]
Geographic coverage	Clay - Cleburne - Randolph - Talladega