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- Usage in publication:
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- Deer Canyon Member*
- Modifications:
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- Original reference
- Dominant lithology:
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- Rhyolite
- AAPG geologic province:
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- San Juan basin
Summary:
Pg. P15. Deer Canyon Member of Valles Rhyolite of Tewa Group. Rhyolite flows and tuffs. Typically contains abundant large bipyramidal phenocrysts of quartz and blocky phenocrysts of sanidine; lacks visible ferromagnesian minerals. Thickness about 100 feet. At most localities conformably overlies thin veneer of red, sedimentary caldera fill, which in turn overlies the uppermost ash-flow units of Tshirege Member of Bandelier Tuff. In upper San Luis Creek underlies a flow of Redondo Creek Member of Valles Rhyolite. Age is Pleistocene, based on stratigraphic relations.
Type locality: Deer Canyon, southwest side of Redondo Border, Jemez Springs 15-min quadrangle, Sandoval Co., north-central NM. Named from dome-flow and associated tuffs in Deer Canyon.
Source: Publication; US geologic names lexicon (USGS Bull. 1520, p. 81).
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 ([ ]).