- Usage in publication:
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- Eagle Mountain Shale Member*
- Modifications:
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- Named
- Biostratigraphic dating
- Dominant lithology:
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- Shale
- AAPG geologic province:
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- Great Basin province
Summary:
Pg. 9-13. Eagle Mountain Shale Member of Carrara Formation. Name proposed for the lowermost member (of 9). Present in southeastern California and southern Nevada. Consists of green to gray-brown slope-forming and fossiliferous silty shale with interbedded terrigenous or carbonate silt- and sand-size material. Thickness ranges from <1 to 59 m; is thickest at type locality. Overlies Emigrant Pass Member (new) of Zabriskie Quartzite; conformably underlies Thimble Limestone Member (new) of Carrara Formation. In Titanothere and Echo Canyons two olenellid trilobite species were found. Age is Early Cambrian. (Eagle Mountain Shale Member of Carrara Formation adopted by the USGS.)
Type locality: exposures on west side of Eagle Mountain, Inyo Co., southeastern CA. Named from Eagle Mountain.
Source: GNU records (USGS DDS-6; Menlo GNULEX); US geologic names lexicon (USGS Bull. 1564, p. 52); Changes in stratigraphic nomenclature, 1979 (USGS Bull. 1502-A, p. A23).
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 ([ ]).