Pg. 714. Matfield shales. Variously colored shale with some shaly, buff, occassionally cherty limestones and a light-gray limestone, 2 feet or more thick, about 30 feet below top. Thickness of formation 0 to 70 feet. Overlies Wreford limestone and underlies Florence flint. Included in Chase stage. Age is Permian.
Named from development in Matfield Twp., Chase Co., eastern KS.
[Adopted by the USGS as Matfield shale of Chase group. Recognized in eastern Kansas, central northern Oklahoma, and southeastern Nebraska.]
Source: US geologic names lexicon (USGS Bull. 896, p. 1319).
Matfield formation of Chase group. Includes (descending) Blue Springs shale, Kinney limestone, and Wymore shale members. Occurs below Barneston formation and above Wreford [limestone], both of Chase group. Age is Permian (Big Blue).
Source: GNC KS-NE Permian Corr. Chart, Oct. 1936.
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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