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National Geologic Map Database
Geologic Unit: Ruth
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Map showing publication footprint
  • Usage in publication:
    • Ruth limestone
  • Modifications:
    • Named
  • Dominant lithology:
    • Limestone
  • AAPG geologic province:
    • Great Basin province
Publication:

Lawson, A.C., 1906, The copper deposits of the Robinson mining district, Nevada: University of California Publications in Geological Sciences, v. 4, no. 14, p. 287-357., See also review by Lindgren Waldemar, Univ. California Pub. Geol. Sci., v. 4, p. 287-357, 1907


Summary:

[Named] for Ruth mine, Robinson mining district [Ely quad] Egan Range, White Pine Co, NV. Is heavy but distinctly bedded blue-gray limestone carrying fossils identified by G.H. Girty as of late Carboniferous age. [list of fossils included]. Characterized by abundance of flint or chert nodules. Thickness is 500 feet. Overlies Arcturus limestone (new).

Source: GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Ruth limestone
  • Modifications:
    • Not used
  • AAPG geologic province:
    • Great Basin province
Publication:

Spencer, A.C., 1917, The geology and ore deposits of Ely, Nevada: U.S. Geological Survey Professional Paper, 96, 189 p., (incl. geologic map, scale 1:30,000)


Summary:

Ruth limestone of Lawson (1906) is discovered to be much lower in section than mapped by Lawson, and "in fact is the same as the Ely limestone", p. 26. Age of Ely limestone is Pennsylvanian based on fossils identified by G.H. Girty.

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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).