- Usage in publication:
-
- Mount Airy granite
- Modifications:
-
- Named
- Dominant lithology:
-
- Granite
- Quartz monzonite
- AAPG geologic province:
-
- Piedmont-Blue Ridge province
Summary:
Term Mount Airy granite introduced on the NC State map for unit in northeastern Surry Co. Described as light gray, nearly white biotite granite of medium texture composed of orthoclase, plagioclase, quartz, biotite, and minor amounts of apatite, zircon, muscovite, chlorite, and epidote. On basis of feldspar content, it is best classed as a quartz monzonite. Age is Paleozoic(?).
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Mount Airy Granodiorite
- Modifications:
-
- Revised
- Age modified
- AAPG geologic province:
-
- Piedmont-Blue Ridge province
Summary:
Unit referred to as Mount Airy Granodiorite rather than Granite. Age given as Early Devonian.
Source: GNU records (USGS DDS-6; Reston GNULEX).
- Usage in publication:
-
- Mount Airy pluton
- Modifications:
-
- Overview
- AAPG geologic province:
-
- Piedmont-Blue Ridge province
Summary:
Unit used on State map as informal Mount Airy pluton. Age of 390 m.y. listed for group of quartz diorite to granodiorite plutons including the Whiteside Mountain, Stone Mountain, Mount Airy, and Spruce Pine.
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 ([ ]).