Foliated to massive.
Interbedded felsic to mafic tuffs and flowrock.
Locally pinkish gray, massive to weakly foliated; contains hornblende.
Metagabbro, metadiorite, and mafic plutonic-volcanic complexes.
Barber, Concord, Farmington, Mecklenburg, and Weddington intrusives.
Metamorphosed dacitic to rhyolitic flows and tuffs, light gray to greenish gray; minor mafic and intermediate metavolcanic rock.
Massive to well foliated; contains andalusite, kyanite, or sillimanite, chloritoid, and pyrite.
Megacrystic, well foliated; locally contains hornblende.
Massive to strongly foliated; minor layers of amphibolite and muscovite schist.
Includes the Concord ring dike.
Foliated to massive.
Locally laminated and pyritic; includes phyllonite, sheared fine-grained metasediment, and metavolcanic rock. In Lilesville granite aureole, includes hornfels.
Pink, massive to weakly foliated. Gold Hill, Kannapolis, Salisbury, Southmont, and Yadkin intrusives.
Metamorphosed quartz diorite to diorite
Metamorphosed granite and granodiorite
Metagabbro and minor metadiorite
Gabbro - Mecklenburg pluton
Felsic metavolcanic rocks and felsic gneiss interpreted to the metavolcanics
Metavolcanic rocks, interlayered felsic to mafic, undivided