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National Geologic Map Database

Geologic Unit: Debris Dam

Usage:

Debris Dam Sandstone (CA)


Subunits:

Romero Conglomerate Lentil (CA).


Geologic age:

Late Cretaceous


Type section, locality, area and/or origin of name:

Small canyon that drains westward to Agua Caliente Canyon about 1.5 mi northeast of Pendola Guard Station and 1-1/8 mi south of Big Caliente Debris Dam, Santa Barbara Co., southern CA. Base of section 6,200 ft S. 1 deg. E. of Big Caliente Dam, and top is 6,700 ft S. of 23 deg. E. of dam. Formation forms part of [Agua] Caliente anticline. To northwest of type section, beds extend past Big Caliente Debris Dam to northern limit of area; southwestward, they extend approximately 1 mi where they disappear beneath Juncal formation; seemingly they reappear south of Santa Ynez fault in an elongate east-west-trending belt; however, correlation here is uncertain because of lack of fossils and occurrence of Romero conglomerate lentils (Page and others, 1951).


AAPG geologic province:

Santa Maria 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 ([ ]).