Pilot Shale (NV*,UT*)
Leatham Member (UT).
Late Devonian to Early Mississippian*
Not designated. Named from Pilot Knob, west part of Ely quadrangle, White Pine Co., NV (Spencer, 1917).
Great Basin province*
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 ([ ]).