Identification_Information: Citation: Citation_Information: Originator: Geology By Howard G. Wilshire Originator: GIS Database by: David R. Bedford and Teresa Coleman Publication_Date: 2002 Title: Digital Version of 'Open-File Report 92-182: Geologic Map of the Marl Mountains Quadrangle, San Bernardino County, California' Edition: 1 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open-File Report Issue_Identification: 02-271 Publication_Information: Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey Online_Linkage: http://geopubs.wr.usgs.gov/open-file/of02-271 Description: Abstract: This is a digital map database version of a previous U.S. Geological Survey Open-File Report, OF92-182. It contains 3 Arc/Info formatted coverages, distributed in Arc Interchange format, a plottable map representation of the database at 1:24,000 scale in Postscript and Adobe PDF formats, and the original map explanation pamphlet in text, Postscript, and Adobe PDF formats. Purpose: The purpose of this dataset is to archive previous geologic mapping in the area and to enable the further use, reclassification, and analysis of existing geologic map data in the area. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1992 Currentness_Reference: Date of original Report Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -115.752747 East_Bounding_Coordinate: -115.623724 North_Bounding_Coordinate: 35.251339 South_Bounding_Coordinate: 35.123634 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Geology Theme_Keyword: Geologic Map Database Theme_Keyword: Marl Mountains Quadrangle Place: Place_Keyword_Thesaurus: None Place_Keyword: Marl Mountains Place_Keyword: San Bernardino County Place_Keyword: Mojave Desert 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. The fact that this database was edited at a scale of 1:24,000 means that higher resolution information is not present in the dataset. Plotting at scales larger than 1:24,000 will not yield greater real detail, although it may reveal fine-scale irregularities below the intended resolution of the database. Similarly, where this database is used in combination with other data of higher resolution, the resolution of the combined output will be limited by the lower resolution of these data. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: David Bedford Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 345 Middlefield Rd, MS975 City: Menlo Park State_or_Province: CA Postal_Code: 94025 Country: USA Contact_Voice_Telephone: 650-329-4924 Contact_Facsimile_Telephone: 650-329-4936 Contact_Electronic_Mail_Address: dbedford@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: marlm-browse.jpg Browse_Graphic_File_Description: Browse Graphic for the Plottable Map Browse_Graphic_File_Type: JPEG Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 1, RC 1.1; ESRI ArcCatalog 8.1.0.570 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Map units, geologic line types, dip values, and other attribute data were appended with a '?' if the feature was not labeled, or clearly labeled, on the original map. Dip values in the 'dip' field of the structural geology points layer that were not clearly identifiable were calculated as the NEGATIVE assumed value, and annotation values were appended with a '?' (such as if it is assumed that a dip was 37, but was not clear, -37 was entered into the dababase, and annotation of 37? was created). For instances where the dip value was absent or completely indeterminate, the value '99' was used, and no anotation was created. No positional accuracy information was prescribed to geologic contacts in the original report (such as approximate, concealed, etc), and thus all geologic contacts were attributed as well placed (certain, or solid lines) although the original nature of the contact is unknown. 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 original report. Completeness_Report: This report is intended to completely represent and describe the original publication of the surficial and bedrock materials of the map area at a scale of 1:24000. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: point, line, and polygon features were vectorized from scans of the original maps and were edited to represent the original map at a scale of 1:24,000. This includes removing unnecessary lines, and closing all polygons. All vector geometries were then transformed into UTM coordinates with an RMS error of .003 or less. No positional accuracy information was prescribed to geologic contacts in the original report (such as approximate, concealed, etc), and thus all geologic contacts were attributed as well placed (certain, or solid lines) although the original nature of the contact is unknown. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: H.G. Wilshire Publication_Date: 1992 Title: Geologic Map of the Marl Mountains Quandrangle, San Bernardino County, California Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Open-File Report Issue_Identification: 92-182 Publication_Information: Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey Source_Scale_Denominator: 24000 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: unknown Time_of_Day: unknown Source_Currentness_Reference: publication date Source_Citation_Abbreviation: WILSH Source_Contribution: Original mapping and description Process_Step: Process_Description: Original map was scanned at a resolution of 600 dpi, vecrorized and edited in Arc/Info, transformed into UTM coordinates, and attributed according to the original publication Process_Date: Unknown Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Complete chain Point_and_Vector_Object_Count: 1000 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Label point Point_and_Vector_Object_Count: 278 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 278 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 30 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Label point Point_and_Vector_Object_Count: 17 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 11 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -117.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000008 Ordinate_Resolution: 0.000008 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: marlm-geo.aat Entity_Type_Definition: Geologic Line Attributes in the coverage 'marlm-geo' Entity_Type_Definition_Source: This Publication Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: FNODE# Attribute_Definition: Internal node number for the beginning of an arc (from-node). Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Whole numbers that are automatically generated. Attribute: Attribute_Label: TNODE# Attribute_Definition: Internal node number for the end of an arc (to-node). Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Whole numbers that are automatically generated. Attribute: Attribute_Label: LPOLY# Attribute_Definition: Internal node number for the left polygon. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Whole numbers that are automatically generated. Attribute: Attribute_Label: RPOLY# Attribute_Definition: Internal node number for the right polygon. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Whole numbers that are automatically generated. Attribute: Attribute_Label: LENGTH Attribute_Definition: Length of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: MARLM-GEO# Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: MARLM-GEO-ID Attribute_Definition: User-defined feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: User defined attribute Attribute: Attribute_Label: LTYPE Attribute_Definition: Description of the type of geologic line Attribute_Definition_Source: This Publication Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: contact, certain Enumerated_Domain_Value_Definition: Boundary between two mapped units that was observed, the location of which is well known and is described in Positional_Accuracy Enumerated_Domain_Value_Definition_Source: Author Enumerated_Domain: Enumerated_Domain_Value: crest of crater in cinder cone Enumerated_Domain_Value_Definition: crest of crater in cinder cone Enumerated_Domain_Value_Definition_Source: Original Publication Enumerated_Domain: Enumerated_Domain_Value: dike Enumerated_Domain_Value_Definition: dike Enumerated_Domain_Value_Definition_Source: Author Enumerated_Domain: Enumerated_Domain_Value: dike, Kap Enumerated_Domain_Value_Definition: a dike composed of map unit Kap Enumerated_Domain_Value_Definition_Source: Author Enumerated_Domain: Enumerated_Domain_Value: dike, Km Enumerated_Domain_Value_Definition: dike composed of map unit Km Enumerated_Domain_Value_Definition_Source: Author Enumerated_Domain: Enumerated_Domain_Value: dike, Kt Enumerated_Domain_Value_Definition: dike composed of map unit Kt Enumerated_Domain_Value_Definition_Source: Author Enumerated_Domain: Enumerated_Domain_Value: fault, certain Enumerated_Domain_Value_Definition: Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset. Locational accuracy is well located Enumerated_Domain_Value_Definition_Source: Author Enumerated_Domain: Enumerated_Domain_Value: map boundary Enumerated_Domain_Value_Definition: Edge of mapped area, used to bound polygons at the edge of the map database Enumerated_Domain_Value_Definition_Source: Author Enumerated_Domain: Enumerated_Domain_Value: dike, Ktm Enumerated_Domain_Value_Definition: dike composed of map unit Ktm Enumerated_Domain_Value_Definition_Source: Author Enumerated_Domain: Enumerated_Domain_Value: dike, QTbi Enumerated_Domain_Value_Definition: a dike composed of map unit QTbi Enumerated_Domain_Value_Definition_Source: Author Enumerated_Domain: Enumerated_Domain_Value: dike, TKm Enumerated_Domain_Value_Definition: a dike composed of unit TKm Enumerated_Domain_Value_Definition_Source: Author Enumerated_Domain: Enumerated_Domain_Value: dike, TKr Enumerated_Domain_Value_Definition: a dike composed of map unit TKr Enumerated_Domain_Value_Definition_Source: Author Attribute: Attribute_Label: SEL Attribute_Definition: User Defined Attribute Attribute_Definition_Source: This Publication Attribute_Domain_Values: Unrepresentable_Domain: User defined attribute Attribute: Attribute_Label: SYMB Attribute_Definition: User Defined Attribute Attribute_Definition_Source: This Publication Attribute_Domain_Values: Unrepresentable_Domain: User defined attribute Detailed_Description: Entity_Type: Entity_Type_Label: marlm-geo.pat Entity_Type_Definition: Polygon attributes for coverage 'marlm-geo' (Faults, depositional contacts, and rock units) Entity_Type_Definition_Source: This Publication Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: AREA Attribute_Definition: Area of feature in internal units squared. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: MARLM-GEO# Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: MARLM-GEO-ID Attribute_Definition: User-defined feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: User-defined feature number. Attribute: Attribute_Label: PTYPE Attribute_Definition: Geologic map unit attribute Attribute_Definition_Source: This Publication Attribute_Domain_Values: Unrepresentable_Domain: Geologic map unit labels are described in the accompanying geologic report Attribute: Attribute_Label: SEL Attribute_Definition: User-defined attribute. Attribute_Definition_Source: This Publication Attribute_Domain_Values: Unrepresentable_Domain: User-defined attribute. Attribute: Attribute_Label: SYMB Attribute_Definition: User-defined attribute. Attribute_Definition_Source: This Publication Attribute_Domain_Values: Unrepresentable_Domain: User-defined attribute. Detailed_Description: Entity_Type: Entity_Type_Label: marlm-smp.pat Entity_Type_Definition: Point attrubutes for the Samples layer, marlm-smp Entity_Type_Definition_Source: This Publication Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: AREA Attribute_Definition: Area of feature in internal units squared. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: MARLM-SMP# Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: MARLM-SMP-ID Attribute_Definition: User-defined feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: User-defined feature number. Attribute: Attribute_Label: pttype Attribute_Definition: Description of the type of sample Attribute_Definition_Source: This Publication Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Sample Enumerated_Domain_Value_Definition: Sample for K/Ar analysis Enumerated_Domain_Value_Definition_Source: This Publication Attribute: Attribute_Label: sampno Attribute_Definition: The sample number or designator Attribute_Definition_Source: This Publication Attribute_Domain_Values: Unrepresentable_Domain: The sample number, as depicted on the map and report Attribute: Attribute_Label: SEL Attribute_Definition: User-defined attribute. Attribute_Definition_Source: This Publication Attribute_Domain_Values: Unrepresentable_Domain: User-defined attribute. Attribute: Attribute_Label: SYMB Attribute_Definition: User-defined attribute. Attribute_Definition_Source: This Publication Attribute_Domain_Values: Unrepresentable_Domain: User-defined attribute. Detailed_Description: Entity_Type: Entity_Type_Label: marlm-str.pat Entity_Type_Definition: Point Attribubes for the geologic structure layer, marlm-str Entity_Type_Definition_Source: This Publication Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: AREA Attribute_Definition: Area of feature in internal units squared. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: MARLM-STR# Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: MARLM-STR-ID Attribute_Definition: User-defined feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: User-defined feature number. Attribute: Attribute_Label: PTTYPE Attribute_Definition: Description of the structural measurement Attribute_Definition_Source: This Publication Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: bedding Enumerated_Domain_Value_Definition: stratigraphic bedding Enumerated_Domain_Value_Definition_Source: This Publication Enumerated_Domain: Enumerated_Domain_Value: foliation Enumerated_Domain_Value_Definition: foliation Enumerated_Domain_Value_Definition_Source: This Publication Enumerated_Domain: Enumerated_Domain_Value: horz bedding Enumerated_Domain_Value_Definition: horizontal (flat) bedding Enumerated_Domain_Value_Definition_Source: Author Enumerated_Domain: Enumerated_Domain_Value: vert foliation and bedding Enumerated_Domain_Value_Definition: vertical foliation Enumerated_Domain_Value_Definition_Source: Author Attribute: Attribute_Label: Dip Attribute_Definition: The dip value of the structural measurement, indeterminated dips contain a value of 99, assumed or inferred dip values are negative Attribute_Definition_Source: This Publication Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 90 Attribute_Units_of_Measure: degrees Attribute: Attribute_Label: Strike Attribute_Definition: The strike of the structural measurement, based on the 'right hand rule' Attribute_Definition_Source: This Publication Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 360 Attribute_Units_of_Measure: degrees, based on the 'right-hand-rule' Attribute: Attribute_Label: SEL Attribute_Definition: User-defined attribute. Attribute_Definition_Source: This Publication Attribute_Domain_Values: Unrepresentable_Domain: User-defined attribute. Attribute: Attribute_Label: SYMB Attribute_Definition: User-defined attribute. Attribute_Definition_Source: This Publication Attribute_Domain_Values: Unrepresentable_Domain: User-defined attribute. Overview_Description: Entity_and_Attribute_Overview: The primary layer is the geology layer (marlm-geo), which consists of both polygon features and arc features that describes map units (polygons), and depositional contacts, faults (which may or may not be polygon bounding features) and map boundaries. Map units (polygons) are described in the polygon attribute table (marlm-geo.pat). The identities of the map units are recorded in the PTYPE field by map label (i.e. Ts). For a description of the map units, consult the PostScript or PDF explanation pamphlets in this report. Geologic lines (arcs) are recorded as strings of vectors and are described in the arc attribute table (marlm-geo.aat). They define the boundaries of the map units, the faults, and the map boundaries. These distinctions, including the geologic identities of the unit boundaries, are recorded in the LTYPE field. Attributes for geologic lines generally follow a scheme of the type of geologic line (i.e. fault), followed by a locational and/or scientific modifier (i.e. approx. located or queried). Entity_and_Attribute_Detail_Citation: This Publication Overview_Description: Entity_and_Attribute_Overview: The geologic structure layer (marlm-str) consists of point features that describe geologic structures such as strike and dip of beds. Point features, typically structural measurements, are described in the point attribute table (marlm-str.pat) and are used to represent locations of structural measurements such as strike and dip, and foliation. The type of structural measurement of points is attributed in the PTTYPE field, and the measurements taken at that location are attributed in the STRIKE and DIP fields. Entity_and_Attribute_Detail_Citation: This Publication Overview_Description: Entity_and_Attribute_Overview: Features representing location of samples (marlm-smp) discussed in the original report, are described in the point attribute table (marlm-smp.pat). Attributes of features in this dataset are recorded in the PTTYPE field, and the sample number from the map is recorded in the SAMPNO field. Entity_and_Attribute_Detail_Citation: This Publication Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Marl Mountians, California Database Contact_Position: Database coordinator Contact_Address: Address_Type: mailing address Address: 345 Middlefield Road, MS975 City: Menlo Park State_or_Province: California Postal_Code: 94025 Country: USA Contact_Voice_Telephone: (650) 329-4924 Resource_Description: All files for this report can be accessed via the World Wide Web at: http://geopubs.wr.usgs.gov/open-file/of02-271 or through File Transfer Protocol (FTP) at ftp://geopubs.wr.usgs.gov/pub/open-file/of02-271/ Distribution_Liability: This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. This database, identified as "Digital Version of 'Open-File Report 92-182: Geologic Map of the Marl Mountains Quadrangle, San Bernardino County, California'" has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE Format_Version_Number: 8.0 Format_Specification: ARC/INFO export files, explanatory materials, and printable maps for the digital database can be downloaded at the specified URL File_Decompression_Technique: no compression applied Transfer_Size: 0.277 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://geopubs.wr.usgs.gov/open-file/of02-271/ Network_Resource_Name: ftp://geopubs.wr.usgs.gov/pub/open-file/of02-271/ Fees: None Custom_Order_Process: Database files, PostScript plotfiles, and related files can be obtained by sending a tape or CDR (Recordable CD-ROM) with request and return address to: Marl Mountains, California Database c/o Database Coordinator U.S. Geological Survey 345 Middlefield Road, M/S 975 Menlo Park, CA 94025 Do not omit any part of this address! The compressed tar file will be returned on the tape or CD-ROM. The acceptable tape type is: 2.3 or 5.0 GB, 8 mm Exabyte tape. Metadata_Reference_Information: Metadata_Date: 20010308 Metadata_Review_Date: 20010308 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: David R Bedford Contact_Position: Geologist Contact_Address: Address_Type: mailing address Address: 345 Middlefield Rd, MS975 City: Menlo Park State_or_Province: California Postal_Code: 94025 Country: USA Contact_Voice_Telephone: 650-329-4924 Contact_Facsimile_Telephone: 650-329-4936 Contact_Electronic_Mail_Address: dbedford@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_Access_Constraints: NONE Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile