| Abstract: | The surficial geologic map of the Amboy 30‘ x 60‘ quadrangle presents characteristics of surficial materials for an area of approximately 5,000 km2 in the eastern Mojave Desert of southern California. This map consists of new surficial mapping conducted between 2000 and 2007, as well as compilations from previous surficial mapping. Surficial geologic units are mapped and described based on depositional process and age categories that reflect the mode of deposition, pedogenic effects following deposition, and, where appropriate, the lithologic nature of the material. Many physical properties were noted and measured during the geologic mapping. This information was used to classify surficial deposits and to understand their ecological importance. We focus on physical properties that drive hydrologic, biologic, and physical processes such as particle-size distribution (PSD) and bulk density. The database contains point data representing locations of samples for both laboratory determined physical properties and semiquantitative field-based information in the database. We include the locations of all field observations and note the type of information collected in the field to help assist in assessing the quality of the mapping. The publication is separated into three parts: documentation, spatial data, and printable map graphics of the database. Documentation includes this pamphlet, which provides a discussion of the surficial geology and units and the map. Spatial data are distributed as ArcGIS Geodatabase in Microsoft Access format and are accompanied by a readme file, which describes the database contents, and FGDC metadata for the spatial map information. Map graphics files are distributed as Postscript and Adobe Portable Document Format (PDF) files that provide a view of the spatial database at the mapped scale. |
| Genre: | USGS Numbered Series |
| ProdID: | 70007374 |
| Citation Author: | Bedford, David R.; Miller, David M.; Phelps, Geoffrey A. |
| Citation Contributing Office: | Geology and Geophysics Science Center |
| Citation Datum: | NAD27 |
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| Citation Language: | English |
| Citation Larger Work Title: | |
| Citation LatN: | 0350000 |
| Citation LatS: | 0343000 |
| Citation LonE: | -1150000 |
| Citation LonW: | -1160000 |
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| Citation No Pagination: | |
| Citation Number Of Pages: | |
| Citation Online Only Flag: | Y |
| Citation Phsyical Description: | Pamphlet: iv, 20 p.; Figures; Map: 1 Sheet: 56.00 x 30.00 inches; Readme TXT; Metadata TXT; ZIP Download of Data |
| Citation Projection: | Universal Transverse Mercator projection |
| Citation Public Comments: | |
| Citation Publisher: | U.S. Geological Survey |
| Citation Series: | Scientific Investigations Map |
| Citation Series Code: | SIM |
| Citation Series Number: | 3109 |
| Citation Search Results Text: | Surficial geologic map of the Amboy 30‘ x 60‘ quadrangle, San Bernardino County, California; 2010; SIM; 3109; Bedford, David R.; Miller, David M.; Phelps, Geoffrey A. |
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| Citation Year: | 2010 |
| Type: | citation/reference |
| Text: | Surficial geologic map of the Amboy 30‘ x 60‘ quadrangle, San Bernardino County, California; 2010; SIM; 3109; Bedford, David R.; Miller, David M.; Phelps, Geoffrey A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/sim_3109.png |
| URL (INDEX PAGE): | http://pubs.usgs.gov/sim/3109/ |
| Date Other: | Thu, 23 Feb 2012 00:00 -0600 |
| Publisher: | U.S. Geological Survey |
