Burkeville Pluton (VAbgr;0)

State	Virginia
Name	Burkeville Pluton
Geologic age	Proterozoic
Original map label	bgr
Comments	Central Piedmont From expanded explanation (ref. VA002): Burkeville pluton. Grayish-blue, fine- to medium grained, massive to faintly foliated; composition ranges from granodiorite to monzonite. Mineralogy: oligoclase + microcline + quartz + biotite + epidote + apatite + zircon. Geophysical signature: diffuse pattern of negative magnetic and circular positive radiometric anomalies. The pluton was originally referred to as the Burkeville granite (Husted, 1942), and is the "granite in the Burkeville granite quarry" of Steidtmann (1945); the pluton intrudes migmatitic paragneiss (mpg).
Primary rock type	granodiorite
Secondary rock type	monzonite
Other rock types
Lithologic constituents	Major Igneous > Plutonic > Syenitic > Monzonite Igneous > Plutonic > Granitic > Granodiorite
Map references	Digital Representation of the 1993 Geologic Map of Virginia", 2003, CD ROM (ISO-9660) contains image file, expanded explanation in pdf, and ESRI shapefiles, viewing software not included. This is a digital version of "Geologic Map of Virginia" published in 1993. Available from: https://www.dmme.virginia.gov/commerce/ [https://www.dmme.virginia.gov/commerce/]
Unit references	Virginia Division of Mineral Resources, 1993, Geologic Map of Virginia: Virginia Division of Mineral Resources, scale 1:500,000 Digital Representation of the 1993 Geologic Map of Virginia - expanded explanation: 2003, Commonwealth of Virginia, Department of Mines, Minerals, and Energy, Divsion of Mineral Resources, Publication 147, 85 pp Digital Representation of the 1993 Geologic Map of Virginia", 2003, CD ROM (ISO-9660) contains image file, expanded explanation in pdf, and ESRI shapefiles, viewing software not included. This is a digital version of "Geologic Map of Virginia" published in 1993. Available from: https://www.dmme.virginia.gov/commerce/ [https://www.dmme.virginia.gov/commerce/]
Geographic coverage	Amelia - Nottoway