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Surficial and bedrock geologic map database of the Kelso 7.5 Minute quadrangle, San Bernardino County, California

Open-File Report 2003-501

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Abstract

This geologic map database describes geologic materials for the Kelso 7.5 Minute Quadrangle, San Bernardino County, California. The area lies in eastern Mojave Desert of California, within the Mojave National Preserve (a unit of the National Parks system). Geologic deposits in the area consist of Proterozoic metamorphic rocks, Cambrian-Neoproterozoic sedimentary rocks, Mesozoic plutonic and hypabyssal rocks, Tertiary basin fill, and Quaternary surficial deposits. Bedrock deposits are described by composition, texture, and stratigraphic relationships. Quaternary surficial deposits are classified into soil-geomorphic surfaces based on soil characteristics, inset relationships, and geomorphic expression. The surficial geology presented in this report is especially useful to understand, and extrapolate, physical properties that influence surface conditions, and surface- and soil-water dynamics. Physical characteristics such as pavement development, soil horizonation, and hydraulic characteristics have shown to be some of the primary drivers of ecologic dynamics, including recovery of those ecosystems to anthropogenic disturbance, in the eastern Mojave Desert and other arid and semi-arid environments.

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Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Surficial and bedrock geologic map database of the Kelso 7.5 Minute quadrangle, San Bernardino County, California
Series title:
Open-File Report
Series number:
2003-501
Year Published:
2003
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
Geology, Minerals, Energy and Geophysics Science Center
Description:
1 Plate: 45.00 x 30.00 inches; Revisions; Metadata: TXT and HTML; Metadata FAQ; Faults; Structure; Digital data package; Map
Country:
United States
State:
California
County:
San Bernardino County
Datum:
National Geodetic Datum of 1929
Projection:
Universal Transverse Mercator projection
Scale:
24000