- Usage in publication:
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- Los Pinos granite
- Modifications:
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- Named
- Dominant lithology:
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- Granite
- AAPG geologic province:
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- Southern Rocky Mountain region
Summary:
Named for mountain range in northwestern Socorro Co, NM, Southern Rocky Mountain region. No type locality designated. Forms steep western escarpment for 7 mi along central and southern parts of Los Pinos Mountains. Is a pink, medium- to coarse-grained granite composed of microcline, orthoclase, albite, and quartz with biotite, magnetite, muscovite, apatite, garnet, and zircon as accessory minerals. Intrudes older pre-Cambrian units and in part, or wholly, assimilated or replaced them. Overlies and intrudes pre-Cambrian Sevilleta schist (new). Unconformably underlies Derry series (Pennsylvanian). Geologic map. Structure cross sections. Pre-Cambrian age [presumably based on regional geology and stratigraphic position].
Source: GNU records (USGS DDS-6; Denver 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 ([ ]).