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  • Usage in publication:
    • Wilshire Till Member
  • Modifications:
    • Named
  • Dominant lithology:
    • Till
    • Loam
  • AAPG geologic province:
    • Cincinnati arch
Publication:

Bleuer, N.K., 1991, The Lafayette bedrock valley system of Indiana; concept, form, and fill stratigraphy, IN Melhorn, W.N., and Kempton, J.P., eds., Geology and hydrogeology of the Teays-Mahomet bedrock valley system: Geological Society of America Special Paper, 258, p. 51-77.


Summary:

Wilshire Till Member of Jessup Formation here defined in east-central IN. Occurs in the subsurface of easternmost Marion valley. Described as a gray loam till of eastern-source mineralogy. Interfingers with the eastern ice-proximal facies of the Blackford Member (new name). Is correlated with till at St. Marys, OH, based on drillers' description, position, and log character.

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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