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Geologic Unit: Exline
Map showing publication footprint
  • Usage in publication:
    • Exline limestone
  • Modifications:
    • Original reference
  • AAPG geologic province:
    • Iowa shelf
Publication:

Cline, L.M., 1941, Traverse of upper Des Moines and lower Missouri series from Jackson County, Missouri, to Appanoose County, Iowa: American Association of Petroleum Geologists Bulletin, v. 25, no. 1, p. 23-72. [Available online, with subscription, from AAPG archives: http://www.aapg.org/datasystems or http://search.datapages.com]


Summary:

Pg. 62, 65-66. Exline limestone of Henrietta group. Limestone at top of Henrietta group. Upper 3 inches laminated, lower 1 foot massive; dark blue-gray, earthy, medium-grained; well jointed, weathers brown and slabby; fossiliferous with CHONETES and white crinoid stems which contrast strongly with weathered yellow-brown matrix. Separated from underlying Cooper Creek limestone (new) by underclay, coal, and shale. Traced into northern Missouri. Age is Pennsylvanian.
Type locality: about 1.5 mi south of southwest corner of Exline, Appanoose Co., IA. Well exposed in west-flowing tributary ravine of North Shoal Creek, in SE/4 sec. 6, T. 67 N., R. 17 W.

Source: US geologic names lexicon (USGS Bull. 1200, p. 1305-1306).


Map showing publication footprint
  • Usage in publication:
    • Exline limestone
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Iowa shelf
Publication:

Moore, R.C. (chairman), 1944, Correlation of Pennsylvanian formations of North America; Chart No. 6, Correlation chart of Pennsylvanian rocks of North America: Geological Society of America Bulletin, v. 55, no. 6, p. 657-706., Prepared by the Pennsylvanian Subcommittee, R.C. Moore, chairman, under the auspices of the National Research Council Committee on Stratigraphy, C.O. Dunbar, chairman


Summary:

Chart 6 (column 31). Exline limestone. Shown on chart at top of Appanoose group in Iowa.

Source: US geologic names lexicon (USGS Bull. 1200, p. 1305-1306).


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

Greene, F.C., and Searight, W.V., 1949, Revision of the classification of the post-Cherokee Pennsylvanian beds of Missouri: Missouri Division of Geological Survey and Water Resources Report of Investigations, no. 11, 22 p.


Summary:

Pg. v (fig. 1), 10. Exline limestone. In Pleasanton group, Missouri series.

Source: US geologic names lexicon (USGS Bull. 1200, p. 1305-1306).


Map showing publication footprint
  • Usage in publication:
    • Exline limestone member
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Illinois basin
Publication:

Kosanke, R.M., Simon, J.A., Wanless, H.R., and Willman, H.B., 1960, Classification of the Pennsylvanian strata of Illinois: Illinois Geological Survey Report of Investigations, no. 214, 84 p.


Summary:

Pg. 38, 49 (table 1). Exline limestone member of Modesto formation (new) of McLeansboro group. In northern western Illinois, overlies Lonsdale limestone member and underlies Trivoli sandstone member. Age is Late Pennsylvanian (Missourian). Presentation of new rock-stratigraphic classification of Pennsylvanian strata in Illinois; cyclical classification is independent of rock-stratigraphic classification.

Source: US geologic names lexicon (USGS Bull. 1200, p. 1305-1306).


Map showing publication footprint
  • Usage in publication:
    • Exline Limestone Member
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Forest City basin
    • Iowa shelf
Publication:

Howe, W.B., 1982, Stratigraphy of the Pleasanton Group, Pennsylvanian System in Missouri: Missouri Division of Geology and Land Survey Open-File Report, no. 82-1O-GI, 112 p.


Summary:

Exline Limestone Member of Lees Summit Formation (new) of Pleasanton Group. Revised to lower member (of 2) of Lees Summit Formation. Traced from southern Iowa, south into Cass County, Missouri. Average thickness in Missouri is 1 foot. Correlates with Checkerboard Limestone of Kansas and Oklahoma. Overlies South Mound Shale Member (new) of Seminole Formation of Pleasanton Group; underlies Unity Farm Shale Member (new) of Lees Summit. Fossiliferous. Age is Late Pennsylvanian (early Missourian). Unit serves as important datum within Pennsylvanian column in northern Midcontinent region. Report includes faunal list.

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