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Map showing publication footprint
  • Usage in publication:
    • French Lick coal member
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Coal
  • AAPG geologic province:
    • Illinois basin
Publication:

Gray, H.H., Jenkins, R.D., and Weidman, R.H., 1960, Geology of the Huron area, south-central Indiana: Indiana Geological Survey Bulletin, no. 20, 78 p.


Summary:

Pg. 26, 27, pl. 1. French Lick coal member of Mansfield formation. Important stratigraphic marker or key bed about 50 feet below top of lower unit of Mansfield. Average thickness about 1 foot. Coal named by D.W. Franklin (1939, unpub. thesis). Franklin's type section for coal, in SW/4 NW/4 sec. 4, T. 2 N., [sic] R. 2 W., not located. Another locality noted which may be one to which Franklin referred. Age is Pennsylvanian.
Type locality: quarry and mine in NE/4 NE/4 sec. 5, T. 1 N., R. 2 W., approx. 1 mi west of town of French Lick, Orange Co., south-central IN. Named from French Lick.

Source: US geologic names lexicon (USGS Bull. 1200, p. 1428-1429).


Map showing publication footprint
  • Usage in publication:
    • French Lick Coal Member
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Illinois basin
Publication:

Shaver, R.H., Ault, C.H., Burger, A.M., Carr, D.D., Droste, J.B., Eggert, D.L., Gray, H.H., Harper, Denver, Hasenmueller, N.R., Hasenmueller, W.A., Horowitz, A.S., Hutchison, H.C., Keith, B.D., Keller, S.J., Patton, J.B., Rexroad, C.B., and Wier, C.E., 1986, Compendium of rock-unit stratigraphy in Indiana; a revision: Indiana Geological Survey Bulletin, no. 59, 203 p.


Summary:

Pg. 49, pls. French Lick Coal Member, in basal part of Mansfield Formation of Raccoon Creek Group. Commercially mined coal. Present in Orange, Martin, and Dubois Counties, south-central Indiana. Described by Franklin (1939, unpub. thesis) as bright, blocky, 2.4 feet (0.7 m) thick, and having no partings. Roof generally thin carbonaceous shale overlain by sandy siltstone; floor is underclay. Lies immediately below or close to so-called Hindostan Whetstone Beds, and 40 to 60 feet (12 to 18 m) below Pinnick Coal Member. Called Coal I by Ashley (1899, p. 1086). Age is Early Pennsylvanian (Morrowan). Report includes map of type sections-localities-areas, correlation chart.

Source: Publication.


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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