Pg. 2274 (fig. 1), 2275. Plumb shale member of Wood Siding formation. Defined to include strata between Nebraska City limestone member below and Grayhorse limestone member above. Thickness at type locality about 20 feet; average thickness across Kansas 13 feet. Name credited to M.R. Mudge and R.H. Burton [USGS Bull. 1068, 210 p., geol. map, 1959]. Age is Late Pennsylvanian (Virgilian).
Type section: exposed in an east-west roadcut in SW/4 SE/4 SE/4 sec. 30, T. 14 S., R. 13 E., about 1.5 miles west of Harveyville, Wabaunsee Co., eastern KS. Named from Plumb Twp., southeastern Wabaunsee Co., eastern KS.
Source: US geologic names lexicon (USGS Bull. 1200, p. 3066).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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