Metamorphosed Conglomerate (SDXcg;0)

Metamorphosed Conglomerate

Gray to grayish-brown, conglomeratic biotite phyllite, siliceous biotite phyllite, mica schist, quartzite, and iron-formation. Thickness up to 2,000 ft (610 m).

State	South Dakota
Name	Metamorphosed Conglomerate
Geologic age	Early Proterozoic
Lithologic constituents	Major Metamorphic > Schist > Mica-schist Metamorphic > Metasedimentary > Metaclastic > Quartzite Metamorphic > Metasedimentary > Metaclastic > Phyllite Minor Sedimentary > Chemical > Banded-iron-formation (Bed)
References	Martin, J.E., Sawyer, J.F., Fahrenbach, M.D., Tomhave, D.W., and Schulz, L.D., 2004, Geologic Map of South Dakota: South Dakota Geological Survey, GM 10, scale 1:500,000.
NGMDB product	NGMDB product page for 72317
Counties	Custer - Pennington

Metamorphosed Conglomerate

Martin, J.E., Sawyer, J.F., Fahrenbach, M.D., Tomhave, D.W., and Schulz, L.D., 2004, Geologic Map of South Dakota: South Dakota Geological Survey, GM 10, scale 1:500,000.