Generalized geologic map of North Carolina

GENERALIZED GEOLOGIC MAP OF NORTH CAROLINA LLEGHANY RTHAMPTON 3 ASHE GHAM Elizabeth HERTFORD SAW y^AARLE 'SOUND WinsWn-$«tlem Du t ham IREDELL TYRRELL MARTIN DARE Raleigh HATHAM CATAWBA Asheville SWAIN FORT ^ HYDE GRAHAM STANLY MOORE Cape Hatteras MACON SAMPSON Monroe PENDEl ilminglon Sedimentary Rocks м .2 3 S | 8 3 73 O. CL Jj о з 3 S 2 Sedimentary and Metamorphic Rocks Sedimentary rocks - sandstone, dolomite, shale and siltstone. Mctasedimentary and mctavolcanic rocks of the Kings Mountain belt - schist, phyllite, marble, metavolcanic rock, quartzite and gneiss. Metamorphic rocks of the Inner Piedmont, Milton belt and Raleigh belt - gneiss, schist and amphibolite. Mctavolcanic rocks of the Carolina slate belt and eastern slate belt - felsic metavolcanic rock with mafic and intermediate volcanic rock. Metasedimentary rocks of the Carolina slate belt and eastern slate belt - metamudstone, argillite and cpiclastic rock. Clastic and carbonate metasedimentary rocks of the Murphy belt - schist, phyllite. quartzite, marble, slate and metasiltstone. Brevard fault zone - schist, marble and phyllonite. Clastic mctasedimentary and metavolcanic rocks of the Ocoee Supergroup, Grandfather Mountain Formation. Mount Rogers Formation and quartzite of the Sauratown Mountains anticlinorium - slate, metasiltstone, schist, metagraywackc, calc-silicate granofels, quartzite and felsic metavolcanic rock. Clastic metasedimentary rock and mafic and felsic metavolcanic rock of the Ashe Metamorphic Suite, Tallulah Falls Formation and Alligator Back Formation - gneiss, schist, metagraywacke, amphibolite and calc-silicate granofels. Felsic gneiss derived from sedimentary and igneous rocks in the northern outcrop area; biotitc gneiss in the southern outcrop area; locally migmatitic and mylonitic. Locally and variably interlayered with amphibolite, calc-silicate granofels and rare marble. Intruded by Late Proterozoic mafic and felsic plutons. Intrusive Rocks Granitic rocks - unfoliated to weakly foliated. Syenite - Concord ring dike. Metamorphosed gabbro and diorite - foliated to weakly foliated. Metamorphosed granitic rocks - foliated to weakly foliated; locally migmatitic. Henderson Gneiss - uneven-grained monzonitic to granodioritic. Meta-ultramafic rocks. Cape Lookout Surficial deposits, undivided - sand, clay and gravel. (Shown only below 25 feet of elevation.) Pinehurst Formation - unconsolidated sand. Terrace deposits and upland sediment - gravel, clayey sand and sand. Waccamaw Formation - fossiliferous sand with silt and clay. Yorktown Formation and Duplin Formation, undivided - Yorktown Formation- fossiliferous clay and sand. Duplin Formation- shelly sand, sandy marl and limestone. Cape Fear Belgrade Formation, undivided - Pollocksvillc Member- oyster-shell mounds in sand matrix. Haywood Landing Member- fossiliferous clayey sand. ШК River Bend Formation - sandy, molluscan-mold limestone. Castle Hayne Formation - Spring Garden Member- molluscan-mold limestone. Comfort Member and New Hanover Member, undivided - Comfort Member - limestone with bryozoan and echinoid skeletons. New Hanover Member - phosphate-pebble conglomerate. Beaufort Formation, undivided - Unnamed upper member - glauconitic, fossiliferous sand and silty clay. Jericho Run Member - siliceous mudstone with sandstone lenses. Dan River Group, undivided - Stoneville Formation - conglomerate, sandstone and mudstone. Cow Branch Formation - mudstone. Pine Hall Formation - sandstone, mudstone and conglomerate. Chatham Group, undivided - Sanford Formation - conglomerate, sandstone and mudstone. Cumnock Formation.- sandstone and mudstone. Pekin Formation - conglomerate, sandstone and mudstone. □ I □ Peedee Formation - marine sand, clayey sand and clay. Black Creek Formation - lignitic sand and clay. Middcndorf Formation - sand, sandstone and clay. 50 Miles 1991 Reprinted, 1996 Cape Fear Formation - sandstone and sandy mudstone.