U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Geologic Unit: Earlham
Map showing publication footprint
  • Usage in publication:
    • Earlham limestone
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Limestone
  • AAPG geologic province:
    • Iowa shelf
Publication:

Tilton, J.L., and Bain, H.F., 1897, Geology of Madison County [Iowa], IN Calvin, Samuel, and Leonard, A.G., Annual report, 1896, with accompanying papers: Iowa Geological Survey Annual Report, v. 7, p. 489-540.


Summary:

[Credited to H.F. Bain.] Pg. 511-517. Earlham limestone. The first heavy limestone above Fragmental limestone (No. 3 of exposure in sec. 22, Lincoln Township [Madison County, Iowa]), is = beds quarried at Earlham and hence may be called Earlham limestone. In Kansas City formation. Age is Pennsylvanian. Present in western Iowa and Missouri and eastern Kansas.

Source: US geologic names lexicon (USGS Bull. 896, p. 652).


Map showing publication footprint
  • Usage in publication:
    • Earlham limestone†
  • Modifications:
    • Abandoned
  • AAPG geologic province:
    • Iowa shelf
Publication:

Wilmarth, M.G., 1936, [Selected Geologic Names Committee remarks (ca. 1935-1938) on Carboniferous and Permian rocks of the Midcontinent], IN Wilmarth, M.G., 1938, Lexicon of geologic names of the United States (including Alaska): U.S. Geological Survey Bulletin, 896, pts. 1-2, 2396 p.


Summary:

†Earlham limestone. Same as Bethany Falls limestone, the older name.

Source: US geologic names lexicon (USGS Bull. 896, p. 652).


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 ([ ]).

Accessibility FOIA Privacy Policies and Notices

USA Gov U.S. Department of the Interior | U.S. Geological Survey
Supported by the National Cooperative Geologic Mapping Program
Page Contact Information: Personnel
Page Last Modified: Thu 04 Apr 2024 04:41:29 PM MDT