Preliminary surficial geologic map of a Calico Mountains piedmont and part of Coyote Lake, Mojave desert, San Bernardino County, California

Content Provider	Semantic Scholar
Author	Dudash, Stephanie L.
Copyright Year	2006
Abstract	This 1:24,000 scale detailed surficial geologic map and digital database of a Calico Mountains piedmont and part of Coyote Lake in south-central California depicts surficial deposits and generalized bedrock units. Mapping is displayed on parts of four USGS 7.5 minute series topographic maps: Coyote Lake, Yermo, Alvord Mountain West, and Harvard Hill. The map area lies in the central Mojave Desert of California, northeast of Barstow, CA and south of Fort Irwin, CA and covers 258 km2 (99.5 mi2). Geologic deposits in the area consist of Paleozoic metamorphic rocks, Mesozoic plutonic rocks, Miocene volcanic rocks, Pliocene-Pleistocene basin fill, and Quaternary surficial deposits. McCulloh (1960, 1965) conducted bedrock mapping and a generalized version of his maps are compiled into this map. McCulloh's maps contain many bedrock structures within the Calico Mountains that are not shown on the present map. The map and database was produced at 1:24,000 scale (coordinate system NAD 1983, UTM zone 11N) using traditional field methods, interpretation of remote sensing images, and previous mapping. Field methods include description of landforms, deposit characteristics, and soil morphology. Stereoscopic analysis was conducted using 1:24,000 and 1:30,000 scale aerial photographs. Remote sensing images were used to evaluate topography and landforms. Process of deposition, geomorphic position, surface roughness, desert pavement maturity, soil morphology, and inset relations were used to classify Quaternary surficial deposits. All line work was compiled in ESRI's ArcMap® using referenced digital orthoquarter quadrangles (DOQQs) and topographic maps. The digitizing scale was approximately 1:3000. The database includes information on geologic deposits, samples, and geochronology. Note: This metadata report provides an overview of the data content of this geodatabase. In addition, each feature class has a corresponding metadata report that should be referred to for additional Spatial Data Organization, Data Quality and Entity Attribute information.
File Format	PDF HTM / HTML
DOI	10.3133/ofr20061090
Alternate Webpage(s)	https://pubs.usgs.gov/of/2006/1090/Documentation/of06-1090_pamphlet.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article