Usage:
Bull Formation (VT*)
Subunits:
(alphabetical) --all in VT*: Bomoseen Graywacke Member, Mettawee slate facies (informal), Mudd Pond Quartzite Member, Zion Hill Quartzite Member.
Geologic age:
Neoproterozoic and Early Cambrian*
Type section, locality, area and/or origin of name:
Named from quarry on Bull Hill, 2 mi north of Castleton, [Castleton quadrangle, Rutland Co.], west-central VT (Keith, 1932).
AAPG geologic province:
New England 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 ([ ]).