U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Point Lookout granite
  • Modifications:
    • Named
  • Dominant lithology:
    • Granite
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Jonas, A.I., 1935, Hypersthene granodiorite in Virginia: Geological Society of America Bulletin, v. 46, no. 1, p. 47-60.


Summary:

Named Point Lookout granite for its occurrence on Point Lookout Mountain, Grayson Co., southwestern VA. [Unit not described. Age is Precambrian(?).]

Source: GNU records (USGS DDS-6; Reston GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Point Lookout granite
  • Modifications:
    • Revised
    • Overview
  • AAPG geologic province:
    • Piedmont-Blue Ridge province
Publication:

Stose, A.J., and Stose, G.W., 1946, Geology of Carroll and Frederick Counties [Maryland]: Maryland Geological Survey County Report, p. 11-131.


Summary:

Point Lookout granite described as biotite quartz monzonite. Intrudes biotite gneiss injection complex, oldest rock of which is Saddle gneiss (new). Cut by pink pegmatite.

Source: GNU records (USGS DDS-6; Reston GNULEX).


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).

Accessibility FOIA Privacy Policies and Notices

USA Gov U.S. Department of the Interior | U.S. Geological Survey
Supported by the National Cooperative Geologic Mapping Program
Page Contact Information: Personnel
Page Last Modified: Thu 04 Apr 2024 03:29:34 PM MDT