- Usage in publication:
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- Temescal Wash dacite porphyry
- Modifications:
-
- Redescribed
- Dominant lithology:
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- Dacite
- Porphyry
- AAPG geologic province:
-
- Peninsular Ranges province
Summary:
Temescal dacite porphyry of Dudley (1935) is renamed Temescal Wash dacite porphyry. Exposed over wide area few mi southeast of Puente Hills [see Larsen (1948) for distribution]. Is dark-colored rock with plagioclase and quartz phenocrysts and inconspicuous biotite or hornblende. Occurs as rare constituent of conglomerate in Puente Hills.
Source: GNU records (USGS DDS-6; Menlo GNULEX).
- Usage in publication:
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- Temescal Wash quartz latite porphyry*
- Modifications:
-
- Named
- Dominant lithology:
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- Quartz latite
- Porphyry
- AAPG geologic province:
-
- Peninsular Ranges province
Summary:
Temescal dacite porphyry of Dudley (1935) is renamed Temescal Wash quartz latite porphyry since name Temescal was preoccupied and microscopic study and chemical analysis showed rock is quartz latite. Nearly black porphyritic rock forms several large bodies in Corona and Elsinore 30' quads chiefly east of Temescal Wash, Riverside Co, CA; underlies about 21 sq mi. Latite shows dark-gray, rugged, angular outcrops with sharp cliffs and steep, deep stream gorges. Intruded by Estelle tonalite. Is older than Woodson Mountain granodiorite (new) and Bonsall tonalite. Age given as Jurassic(?),
Source: GNU records (USGS DDS-6; Menlo 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 ([ ]).