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  • Usage in publication:
    • Ghost Dance Lava Member*
  • Modifications:
    • Named
  • Dominant lithology:
    • Breccia
  • AAPG geologic province:
    • Great Basin province
Publication:

Ekren, E.B., Byers, F.M., Jr., Hardyman, R.F., Marvin, R.F., and Silberman, M.L., 1980, Stratigraphy, preliminary petrology and some structural features of Tertiary volcanic rocks in the Gabbs Valley and Gillis Ranges, Mineral County, Nevada: U.S. Geological Survey Bulletin, 1464, 54 p.


Summary:

Named as middle member (of 3) of Hu-pwi Rhyodacite. Type locality: Hidden Wash, 3.2 km east of Ghost Dance Ridge, T11N R30E, Gillis Range, Mineral Co, NV. Present in northern Gillis and Wassuk Ranges only. Consists of brownish-gray and black rhyodacitic flow breccia and lava. Porphyritic flow-banded lava contains layers alternately rich and poor in phenocrysts. Thickness ranges from 1 to 100 m. Overlies Nugent Tuff Member (new); underlies Poinsettia Tuff Member (new) (both of Hu-pwi Rhyodacite). Contacts are low-angle detachment faults. Age is Miocene based on K-Ar age of 23 Ma.

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 ([ ]).

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