Pg. 764-771, 799-800. Neosho formation. A series of gray limestones alternating with varicolored shaless, some of which are yellowish-gray in color, corresponding in lithological appearance, and containing a fauna similar to the Cottonwood shales, while others are olive and reddish in tint and non-fossiliferous. Interstratified are shaly limestones and dark gray hard limestones which contain an abundant lamellibranch fauna. Thickness 130 feet. Underlies Strong flint [Wreford limestone] and overlies Cottonwood shales [Florena shale]. Is compared with sections of Swallow (1866) and Meek and Hayden (1859). Is assigned to Permian series of Carboniferous period (base of Permian queried at base of Neosho); characteristic fossils listed.
Named for excellent exposures in Neosho Valley and its tributaries extending from 3 mi northwest to 6 mi southeast of Council Grove, Morris Co., KS (Nemaha anticline).

Source: US geologic names lexicon (USGS Bull. 896, p. 1477); supplemental information from GNU records (USGS DDS-6; Denver GNULEX).

Neosho shales reallocated to Flint Hills division (new) of the Big Blue series, as its basal formation, in Osage, Cowley, and Butler Counties, Kansas (Forest City basin and Nemaha anticline). Neosho underlies Chase limestone of the Flint Hills. Age is Permian.

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

Neosho formation of Prosser (1895, Jour. Geol., v. 3) is reduced in rank to upper member (of 2) of Garrison formation (new) of Council Grove stage (new) in east-central Kansas (Nemaha anticline). Consists of green, chocolate, and yellowish shales alternating with grayish limestones. Contains lamellibranch fauna. Overlies Florena shales, lower member of Garrison formation (new) of Council Grove stage (new); underlies Wreford limestone of Chase stage. Age is late Paleozoic.

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

Neosho shale member of Garrison shale. For the many units into which this shale has been divided in recent years [ca. 1935-1936], see "Modern classifications of the Permian rocks of Kansas and Nebraska," compiled by M.G. Wilmarth, Secretary of Committee on Geologic Names, USGS unpub. corr. chart, Oct. 1936, 1 sheet. The name appears to have recently discarded by Kansas Geological Survey.
[In Kansas and Nebraska, Neosho rocks reallocated to (in ascending order) Morrill limestone member[?] of Beattie limestone, Stearns shale, Bader limestone, Easly Creek shale, Bigelow limestone, and Sheiser shale; all of Council Grove group (G.E. Condra, 1935 (late), Nebraska Geol. Survey Paper, no. 8; R.C. Moore, 1936 (Aug. 31), Kansas Geol. Survey Bull., no. 22).]

Source: US geologic names lexicon (USGS Bull. 896, p. 1477).

Pg. 59. Neosho shale member of Garrison shale. Terms Neosho and Garrison no longer used in Kansas stratigraphic nomenclature.

Source: US geologic names lexicon (USGS Bull. 1200, p. 2705).