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National Geologic Map Database
Geologic Unit: Lansing
Map showing publication footprint
  • Usage in publication:
    • Lansing group
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Forest City basin
Publication:

Moore, R.C., 1932, A reclassification of the Pennsylvanian system in the northern Midcontinent region, IN Carboniferous rocks of eastern Kansas, eastern Nebraska, and western Missouri: Kansas Geological Society Guidebook for the Annual Field Conference, August 28-September 3, 1932, no. 6, p. 79-98., See also "Modern classifications of the Pennsylvanian rocks of eastern Kansas and southeastern Nebraska," compiled by M.G. Wilmarth, Secretary of Committee on Geologic Names, USGS unpub. corr. chart, Oct. 1936, sheet 2


Summary:

Again redefined his Lansing group by excluding at top the Weston shale, Iatan limestone, and lower part of Lawrence shale, to which latter bed he applied new name Hardesly shale. The 3 latter units he assembled under new name Pedee group. Age is Late Pennsylvanian (Missouri age).

Source: US geologic names lexicon (USGS Bull. 896, p. 1147); GNC KS-NE Pennsylvanian Corr. Chart, sheet 2, Oct. 1936.


Map showing publication footprint
  • Usage in publication:
    • Lansing group*
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Anadarko basin
Publication:

Maher, J.C., 1946, Correlation of Paleozoic rocks across Las Animas arch in Baca, Las Animas, and Otero Counties, Colorado: American Association of Petroleum Geologists Bulletin, v. 30, no. 10, p. 1756-1763. [Available online, with subscription, from AAPG archives: http://www.aapg.org/datasystems or http://search.datapages.com]


Summary:

Extended as an undivided unit into the subsurface of Baca County, Colorado, in the Anadarko basin, east of the Las Animas arch. Overlies Kansas City group (undivided) and underlies Peedee group (undivided). Age is Late Pennsylvanian (Missourian). Report includes correlation chart.

Source: Modified from GNU records (USGS DDS-6; Denver GNULEX).


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).