Usage:
Marlbrook Marl (AR*,LA*,TX*)
Marlbrook Formation of Taylor Group (TX)
Geologic age:
Late Cretaceous (Campanian to Maastrichtian)*
Type section, locality, area and/or origin of name:
Typically exposed about 1 mi north of Saratoga, on road to Mineral Springs, Howard Co., AR. Also exposed along Marlbrook Creek in T. 10 S., R. 24 W., Hempstead Co., AR (Hill, 1888).
AAPG geologic province:
Arkla basin*
East Texas basin*
Ouachita folded belt*
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 ([ ]).