Usage:
Brazil Formation (IN*)
Brazil Formation of Raccoon Creek Group (IN)
Subunits:
(ascending) --all in IN: "Lower Block Coal Member," "Upper Block Coal Member," Minshall Coal Member, Buffaloville Coal Member.
Geologic age:
Middle Pennsylvanian*
Type section, locality, area and/or origin of name:
Named from Brazil, Clay Co., central western IN (US geologic names lexicons, USGS Bull. 896, 1200).
Indiana geologists consider type locality to be around Brazil, in southwest corner T. 13 N., R. 6 W., northern Clay Co., southwestern IN (Shaver and others, 1986).
AAPG geologic province:
Illinois basin*
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 ([ ]).