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- Usage in publication:
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- Emigrant Pass Member*
- Modifications:
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- Named
- Dominant lithology:
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- Quartzite
- Sandstone
- AAPG geologic province:
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- Great Basin province
Summary:
Pg. 7-9. Emigrant Pass Member of Zabriskie Quartzite. Present in southeastern California and southern Nevada. Consists of maroon, brown, yellow, pale-green, pink, and white quartzite, sandstone, minor siltstone and phyllitic shale. Quartzite is medium- to coarse-grained. Contains laminated or low-angle cross beds and mudcracks in upper part. Thickness ranges from <1 to 51 m. As uppermost unit and only formal member, overlies main body of Zabriskie Quartzite; underlies Eagle Mountain Shale Member (new) of Carrara Formation. Age is Early Cambrian. (Emigrant Pass Member of Zabriskie Quartzite adopted by the USGS.)
Type locality: exposures north of Emigrant Pass, in NW/4 sec. 25, T. 21 N., R. 8 E., southern Nopah Range, Tecopah quadrangle, Inyo Co., southeastern CA. Named from Emigrant Pass.
Source: GNU records (USGS DDS-6; Menlo GNULEX); US geologic names lexicon (USGS Bull. 1564, p. 54); Changes in stratigraphic nomenclature, 1979 (USGS Bull. 1502-A, p. A25).
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 ([ ]).