New biostratigraphic data suggest that unit is the same age (late Llandoverian) as the overlying Willowvale Shale and is zonally distinct from the underlying Sauquoit Shale. Westmoreland is laterally equivalent to Second Creek Bed, a new name for a phosphatic quartz pebble bed with abundant pyrite at the base of the Williamson Shale.
Source: GNU records (USGS DDS-6; Reston GNULEX).
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 ([ ]).