Striped Rock Granite

Striped Rock granite (Stose and Stose, 1957). Fine- to medium-grained equigranular, fluorite-, epidote-, and allanite bearing hornblende-biotite granite and granite gneiss; faintly foliated to mylonitic (Simpson and Kalaghan, 1989). The Striped Rock has been dated at 695 Ma (U-Pb zircon; Odom and Fullagar, 1984).
State Virginia
Name Striped Rock Granite
Geologic age Proterozoic Z
Lithologic constituents
Major
Igneous > Plutonic > Granitic > Granite
Igneous > Plutonic > Syenitic > Syenite
Comments Blue Ridge Basement Complex, Late Proterozoic Igneous
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 Grayson