Migmatitic Paragneiss

Leucocratic to mesocratic, medium- to coarse-grained layered gneiss contains interlayered biotite-rich and quartzofeldspathic zones, locally migmatitic; includes lesser amounts of biotite schist, muscovite schist, and thin lenticular amphibolite bodies. Mineralogy: biotite + muscovite + plagioclase + potassium feldspar + garnet ± hornblende.
State Virginia
Name Migmatitic Paragneiss
Geologic age Proterozoic
Lithologic constituents
Major
Metamorphic > Metasedimentary > Paragneissmigmatitic paragneiss
Comments Central Piedmont
References

Virginia Division of Mineral Resources, 1993, Geologic Map of Virginia: Virginia Division of Mineral Resources, scale 1:500,000.

Virginia Division of Mineral Resources, 2003, Digital Representation of the 1993 Geologic Map of Virginia, Publication 174, CD ROM (ISO-9660) contains image file, expanded explanation in pdf, and ESRI shapefiles, scale 1:500,000.

NGMDB product
Counties Amelia - Charlotte - Cumberland - Goochland - Lunenburg - Nottoway - Powhatan - Prince Edward - Richmond