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

Condra, G.E., and Bengtson, N.A., 1915, The Pennsylvanian formations of southeastern Nebraska: Nebraska Academy of Sciences Publications, v. 9, no. 2, 60 p., 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 1


Summary:

Pg. 9, 17, 30. Falls City limestone member of Admire(?) formation. Usually one massive bed, brownish mottled, soft, resinous; hardens on exposure. Thickness 3 feet to 6 feet 4 inches. Lies 18 to 27 [37?] feet above Aspinwall limestone. Fossiliferous (pelecypods). Age is Pennsylvanian. Report includes measured sections, cross sections.

Source: US geologic names lexicon (USGS Bull. 896, p. 718-719); GNC KS-NE Pennsylvanian Corr. Chart, sheet 1, Oct. 1936; supplemental information from GNU records (USGS DDS-6; Denver GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Falls City limestone bed
  • Modifications:
    • Principal reference
    • Revised
  • AAPG geologic province:
    • Forest City basin
Publication:

Condra, G.E., 1927, The stratigraphy of the Pennsylvanian system in Nebraska: Nebraska Geological Survey Bulletin, 2nd series, no. 1, 291 p., 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 1


Summary:

Falls City limestone bed of Admire shale member of Wabaunsee formation. Named the beds overlying Falls City limestone and underlying Americus limestone the West Branch shale, and the beds underlying Falls City limestone the Aspinwall shale; but in 1932 he discarded Aspinwall shale and named the beds immediately below Falls City limestone the Hawxby shale. Age is Late Pennsylvanian (Missouri age). Report includes cross sections, measured sections, geologic maps, stratigraphic tables.
On p. 82 Condra stated type locality of Falls City limestone to be in Lehmer quarry, in sec. 32, T. 1 N., R. 16 E., 2.5 mi south and 1.5 mi west of Falls City, Richardson Co., NE.

Source: US geologic names lexicon (USGS Bull. 896, p. 718-719); GNC KS-NE Pennsylvanian Corr. Chart, sheet 1, Oct. 1936; supplemental information from GNU records (USGS DDS-6; Denver GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Falls City limestone formation
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Forest City basin
Publication:

Condra, G.E., 1935, Geologic cross-section, Forest City, Missouri to south of Du Bois, Nebraska: Nebraska Geological Survey Paper, no. 8, 23 p., Issued late in 1935. See also USGS unpub. corr. charts of Pennsylvanian and Permian rocks of KS and NE, compiled by M.G. Wilmarth, Secretary of Committee on Geologic Names, Oct. 1936


Summary:

Pg. 5, 9. Falls City limestone formation of Admire group. At old Lehmer quarry, 4 miles southwest of Falls City and in lower course of Five Point Creek, includes (descending): Lehmer limestone member, 3 to 4 feet; Reserve shale member, 4.5 feet; Miles limestone member, 1+ feet. Overlies Hawxby shale formation and underlies West Branch shale formation, both of the Admire group. Age is considered Permian (lower part of Big Blue).

Source: Publication; GNC KS-NE Pennsylvanian Corr. Chart, sheet 2, Oct. 1936; US geologic names lexicon (USGS Bull. 1200, p. 1318).


Map showing publication footprint
  • Usage in publication:
    • Falls City limestone*
  • Modifications:
    • Age modified
Publication:

Moore, R.C., 1936, Stratigraphic classification of the Pennsylvanian rocks of Kansas: Kansas Geological Survey Bulletin, no. 22, 256 p., 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:

Transferred all beds above Brownville limestone to Permian. (See "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.)

Source: US geologic names lexicon (USGS Bull. 896, p. 718-719); GNC KS-NE Pennsylvanian Corr. Chart, sheet 2, Oct. 1936.


Map showing publication footprint
  • Usage in publication:
    • Falls City limestone member
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Forest City basin
    • Nemaha anticline
Publication:

Condra, G.E., and Reed, E.C., 1943, The geological section of Nebraska: Nebraska Geological Survey Bulletin, no. 14, 82 p., Revised 1959


Summary:

Pg. 36 (fig. 14), 37. Falls City limestone member of Chicago Mound formation of Admire group. Rank reduced to member status in Chicago Mound formation (new). Includes Miles limestone, Reserve shale, and Lehmer limestone as beds. Thickness about 9 feet. Age is Permian (Big Blue).

Source: Publication; US geologic names lexicon (USGS Bull. 1200, p. 1318).


Map showing publication footprint
  • Usage in publication:
    • Falls City limestone*
  • Modifications:
    • Overview
Publication:

Moore, R.C., Frye, J.C., Jewett, J.M., Lee, Wallace, and O'Connor, H.G., 1951, The Kansas rock column: Kansas Geological Survey Bulletin, no. 89, 132 p.


Summary:

Pg. 52. Falls City limestone of Admire group. Underlies West Branch shale; overlies Hawxby shale. [Age is Early Permian (Wolfcampian).]

Source: US geologic names lexicon (USGS Bull. 1200, p. 1318).


Map showing publication footprint
  • Usage in publication:
    • Falls City limestone*
  • Modifications:
    • Revised
Publication:

Moore, R.C., and Mudge, M.R., 1956, Reclassification of some Lower Permian and Upper Pennsylvanian strata in northern Midcontinent, IN Geological notes: American Association of Petroleum Geologists Bulletin, v. 40, no. 9, p. 2271-2278. [Available online, with subscription, from AAPG archives: http://www.aapg.org/datasystems or http://search.datapages.com]


Summary:

Pg. 2274 (fig. 1). Falls City limestone of Admire group. Underlies West Branch shale member of Janesville shale (new); overlies Hawxby shale member of Onaga shale (new). Age is Early Permian (Wolfcampian).

Source: US geologic names lexicon (USGS Bull. 1200, p. 1318).


Map showing publication footprint
  • Usage in publication:
    • Falls City Limestone*
  • Modifications:
    • Biostratigraphic dating
    • Areal extent
  • AAPG geologic province:
    • Chautauqua platform
    • Cherokee basin
    • Nemaha anticline
Publication:

Boardman, D.R., II, Wardlaw, B.R., and Nestell, M.K., 2009, Stratigraphy and conodont biostratigraphy of the uppermost Carboniferous and Lower Permian from the North American Midcontinent: Kansas Geological Survey Bulletin, no. 255, 253 p.


Summary:

Falls City Limestone of Admire Group. Overlies Onaga Shale and underlies Janesville Shale, both of Admire Group. Conodont species association indicates the ADETOGNATHUS-SWEETOGNATHUS-STREPTOGNATHODUS biofacies; nearshore marine depositional environment. Age is Late Pennsylvanian (late Gzhelian; STREPTOGNATHODUS BELLUS conodont zone).
Described from measured sections in Chautauqua, Greenwood, and Pottawatomie Counties, eastern Kansas, and Osage County, northern Oklahoma. (Locs. 1, 2, 3, A12, A15, A26.)

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