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Map showing publication footprint
  • Usage in publication:
    • Spar Mountain sandstone
  • Modifications:
    • Named
  • Dominant lithology:
    • Sandstone
    • Siltstone
  • AAPG geologic province:
    • Illinois basin
Publication:

Tippie, F.E., 1945, Rosiclare-Fredonia contact in and adjacent to Hardin and Pope Counties, Illinois: American Association of Petroleum Geologists Bulletin, v. 29, no. 11, p. 1654-1663. [Available online, with subscription, from AAPG archives: http://www.aapg.org/datasystems or http://search.datapages.com]


Summary:

Name applied to middle sandstone unit of the Fredonia Member of the Ste. Genevieve Formation. This unit has been known as a "sub-Rosiclare sandstone." Typically light-gray to greenish calcareous glauconitic sandstone or siltstone grading to very sandy limestone. Thickness 8 to 15 ft.

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


Map showing publication footprint
  • Usage in publication:
    • Spar Mountain Member
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Illinois basin
Publication:

Droste, J.B., and Carpenter, G.L., 1990, Subsurface stratigraphy of the Blue River Group (Mississippian) in Indiana: Indiana Geological Survey Bulletin, no. 62, 45 p.


Summary:

Spar Mountain Member restricted from report area. Fredonia Member of Ste. Genevieve Limestone is stratigraphically extended in this study to include the equivalent to both the Fredonia and Spar Mountain Members as previously used on the outcrop in Indiana.

Source: GNU records (USGS DDS-6; Reston 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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