Raised in stratigraphic rank from Mayes formation to Mayes group in northeast OK where it can be divided into the Moorefield formation (at base) and Hinsdale formation (at top). Mayes overlies Keokuk formation and underlies Fayetteville formation. Moorefield and Hinsdale mapped (5 geologic maps) in all or parts of Craig, Mayes, Cherokee, Adair, Muskogee, and Sequoyah Cos., OK. This area lies within the Arkoma basin and on the Chautauqua platform. The Moorefield is divisible into the new named (ascending order) Tahlequah, Bayou Manard, Lindsey Bridge, and Ordnance Plant members. Of [Late] Mississippian, Meramecian age.
Source: GNU records (USGS DDS-6; Denver GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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