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Geological map and digital database of the San Rafael Mtn. 7.5-minute quadrangle, Santa Barbara County, California

Open-File Report 2001-290

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Abstract

Geologic mapping of the San Rafael Primitive Area (now the San Rafael Wilderness) by Gower and others (1966) and Vedder and others (1967) did not include all of the San Rafael Mtn. quadrangle, and the part that was mapped was done in reconnaissance fashion. To help resolve some of the structural and stratigraphic ambiguities of the earlier mapping and to complete the mapping of the quadrangle, additional field work was done during short intervals in 1980 and 1981 and from 1996 to 1998. Contacts within the belt of Franciscan rocks at the southwestern corner of the quadrangle were generalized from the detailed map by Wahl (1998). Because extensive areas were inaccessible owing to impenetrable chaparral, observations from several helicopter overflights (1965, 1980, 1981) and interpretations from aerial photographs were used as compilation aids. Consequently, some of the depicted contacts and faults are highly inferential, particularly within the Upper Cretaceous rocks throughout the middle part of the quadrangle.

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Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Geological map and digital database of the San Rafael Mtn. 7.5-minute quadrangle, Santa Barbara County, California
Series title:
Open-File Report
Series number:
2001-290
Year Published:
2001
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
Geology, Minerals, Energy and Geophysics Science Center
Description:
Report: 22 p.; 1 Plate: 48.00 x 36.00 inches; Metadata: TXT file; Database package: TAR.GZ file; Map: PS.GZ file
Country:
United States
State:
California
County:
Santa Barbara County
Projection:
Polyconic projection
Scale:
24000