| State | Alabama |
|---|---|
| Name | Higgins Ferry Group |
| Geologic age | Precambrian to Paleozoic |
| Lithologic constituents |
Major
Metamorphic > Schist > Mica-schist > Muscovite-schistsericite-feldspar-muscovite schist, +/- biotite +/- garnet-muscovite schist; locally includes masses of roscoelite-graphite-quartz schist.
Metamorphic > Gneiss > Biotite-gneissthinly layered coarse to fine-grained biotite-feldspar-quartz gneiss, biotite-garnet feldspathic gneiss
Minor
Igneous > Plutonic > Granitic > Leucocratic-granitic > Pegmatite
|
| Comments | Printed map includes units 'hf, hfgr and hfgt' all under one description; split them up here. |
| 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. |
| NGMDB product | |
| Counties | Chilton - Clay - Coosa |