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Map showing publication footprint
  • Usage in publication:
    • Petersburg formation*
  • Modifications:
    • Named
  • Dominant lithology:
    • Sandstone
    • Shale
    • Limestone
    • Coal
  • AAPG geologic province:
    • Illinois basin
Publication:

Fuller, M.L., and Ashley, G.H., 1902, Ditney folio, Indiana: U.S. Geological Survey Geologic Atlas of the United States Folio, GF-84, 8 p., scale 1:125,000


Summary:

Named for Petersburg, Pike Co., southwestern IN. Includes strata from base of Petersburg coal to base of Millersburg coal. Consists of alternating sandstones and shales with persistent bed of limestone at top. Thickness is 80 ft. Underlain by Brazil formation; overlain by Millersburg formation. [Age is Pennsylvanian.]

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


Map showing publication footprint
  • Usage in publication:
    • Petersburg Formation*
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Illinois basin
Publication:

Willard, D.A., DiMichele, W.A., Eggert, D.L., Hower, J.C., Rexroad, C.B., and Scott, A.C., 1995, Paleoecology of the Springfield Coal Member (Desmoinesian, Illinois basin) near the Leslie Cemetery paleochannel, southwestern Indiana: International Journal of Coal Geology, v. 27, no. 1, p. 59-98.


Summary:

Springfield Coal Member of Petersburg Formation of Carbondale Group is split locally in Warrick and Gibson Cos., IN, by clastic rocks of Folsomville Member of Petersburg Formation.

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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