Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2012 Title: Surficial Geologic Map of the Ivanpah 30' x 60' Quadrangle, San Bernardino County, California, and Clark County, Nevada Geospatial_Data_Presentation_Form: vector digital data Other_Citation_Details: Scientific Investigations Map 3206 Online_Linkage: http://pubs.usgs.gov/sim/3206 Description: Abstract: The Ivanpah 30x60-minute quadrangle covers the heart of the Mojave National Preserve in eastern San Bernardino County, California. The map describes surficial geology and Quaternary volcanic and tectonic features in the area. The map was compiled from detailed surficial geologic maps where available and the remainder was mapped at the scale of 1:100,000 by standard field methods, including examining the geomorphology, surface features, and soil development, as well as by interpretation of remote sensing images. In addition to depicting surficial deposits, the map depicts the many pediments in the region, including famous Cima pediment dome. A few faults in the Bristol Mountains and adjacent to Old Dad Mountain are found to be Quaternary in age, and several more faults are possibly Quaternary in age in that they ruptured materials of poorly defined age, approximately early Pleistocene or Pliocene. Purpose: One of a series of 1:100,000 scale surficial maps and geologic databases of the Mojave Desert region produced to aid in understanding the potential long-term effects of urban development and land use. The multi-purpose surficial geologic maps and databases produced by this project contain information that is being used for land-management decisions with regard to (1) ground-water availability, (2) natural hazard risks, such as earthquakes, landslides, and debris flows, (3) ecosystem sustainability, and (4) effects of climate change. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2012 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -116.007277 East_Bounding_Coordinate: -114.988497 North_Bounding_Coordinate: 35.512418 South_Bounding_Coordinate: 34.961824 Keywords: Theme: Theme_Keyword_Thesaurus: This Report Theme_Keyword: Surficial Geology Place: Place_Keyword_Thesaurus: This Report Place_Keyword: Mojave Desert, California Access_Constraints: None Use_Constraints: Acknowledgement of the U.S. Geological Survey; uses of this digital geologic map should not violate the spatial resolution of the data. Although the digital form of the data removes the constraint imposed by the scale of a paper map, the detail and accuracy inherent in map scale are also present in the digital data. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: David M. Miller Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 345 Middlefield Rd. MS973 City: Menlo Park State_or_Province: CA Postal_Code: 94025 Country: USA Contact_Voice_Telephone: 650-329-4923 Contact_Facsimile_Telephone: 650-329-4936 Contact_Electronic_Mail_Address: dmiller@usgs.gov Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.3.1.4000 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: map units, contacts, or faults are attributed with an appended '?' if their designation is assumed and not definite. Logical_Consistency_Report: Geologic lines attributed as a 'contact' do not separate geologic map units of the same type, and are not considered as 'dangles'. All geologic polygons are attributed with map unit designators found in the Description of Map Units Completeness_Report: Complete for Publication Standards Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Accuracy of line locations is carried in the database and displayed by different line symbols (solid vs. dashed lines) in the cartographic display. For the purpose of this database, solid lines represent contacts and faults located with an accuracy greater than 10 m and commonly greater than 5 m. Dashed lines represent two kinds of less certainly located features, each distinguished in the database: (1) contacts and faults located with an accuracy of 10 to 15 m, (2) contacts that represent gradational boundaries between adjacent units. Gradational contacts represent interleaving of sediments and smooth gradations in characteristics such as percentage of eolian sand. In general, these gradations take place over distances of 50 to 150 m. 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Miller Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 345 Middlefield Rd. MS 973 City: Menlo Park State_or_Province: CA Postal_Code: 94025 Country: USA Contact_Voice_Telephone: 650-329-4923 Contact_Facsimile_Telephone: 650-329-4963 Contact_Electronic_Mail_Address: dmiller@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile