Digital version of 'Open-file report 92-181: geologic map of the Indian Spring quadrangle, San Bernardino County, California'

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Howard G. Wilshire (author)
Originator: David R. Bedford (digital compiler)
Originator: Teresa Coleman (digital compiler)
Publication_Date: 2002
Title:

Digital version of 'Open-file report 92-181: geologic map of the Indian Spring quadrangle, San Bernardino County, California'

Edition: 1
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:

Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 02-272

Publication_Information:

Publication_Place: Menlo Park, California
Publisher: U.S. Geological Survey

Online_Linkage: http://pubs.usgs.gov/of/2002/0272/

Description:

Abstract:

This is a digital map database version of a previous U.S. Geological Survey Open-File Report, OF92-181. 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: Publication date of original report

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -115.877559
East_Bounding_Coordinate: -115.748919
North_Bounding_Coordinate: 35.251210
South_Bounding_Coordinate: 35.123761

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: geology
Theme_Keyword: geologic maps
Theme_Keyword: bedrock geologic units
Theme_Keyword: surficial geologic units
Theme_Keyword: geologic structure
Theme_Keyword: geospatial datasets

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: geoscientificInformation

Place:

Place_Keyword_Thesaurus: none
Place_Keyword: Indian Spring
Place_Keyword: San Bernardino County
Place_Keyword: Mojave Desert

Place:

Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4
Place_Keyword: f06071 = San Bernardino

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, MS 975
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: http://pubs.usgs.gov/of/2002/0272/images/ind-browse.jpg
Browse_Graphic_File_Description: Reduced-size image of the map sheet, 432x628 pixels, 99k bytes
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 Indian Spring Quandrangle, San Bernardino County, California

Geospatial_Data_Presentation_Form: map
Series_Information:

Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 92-181

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: 1992

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: USGS OFR 92-181
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_Step:

Process_Description: Creation of original metadata record
Process_Date: 20010308
Process_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, MS 975
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

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: 0.9996
Longitude_of_Central_Meridian: -117.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000.0
False_Northing: 0.0

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: ind-geo.aat
Entity_Type_Definition: Arcs with geological significance

Attribute:

Attribute_Label: LTYPE
Attribute_Definition: Description of the type of geologic line
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

Attribute_Domain_Values:

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

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: dike
Enumerated_Domain_Value_Definition: dike
Enumerated_Domain_Value_Definition_Source: Author

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: dike, Km
Enumerated_Domain_Value_Definition: a dike composed of map unit Km
Enumerated_Domain_Value_Definition_Source: Author

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: dike, QTbi
Enumerated_Domain_Value_Definition: dike composed of map unit QTbi
Enumerated_Domain_Value_Definition_Source: Author

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: dike, ZYa
Enumerated_Domain_Value_Definition: dike composed of map unit ZYa
Enumerated_Domain_Value_Definition_Source: Author

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: fault, approx. located
Enumerated_Domain_Value_Definition:

Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset. The existence is inferred from structural, stratographic, of lineament relations. Locational accuracy is approximate

Enumerated_Domain_Value_Definition_Source: Author

Attribute_Domain_Values:

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

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: fault, concealed
Enumerated_Domain_Value_Definition:

Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset. The fault is obscured by overlying map units, so it is not well-located

Enumerated_Domain_Value_Definition_Source: Author

Attribute_Domain_Values:

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

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Tsd
Enumerated_Domain_Value_Definition: A bed composed of map unit Tsd
Enumerated_Domain_Value_Definition_Source: Author

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: s.s. fault, r.l., certain
Enumerated_Domain_Value_Definition:

Structural boundary between mapped units or structural discontinuity within a mapped unit that has experienced relative offset in a predomintate right lateral, strike slip direction. Locational accuracy is well located

Enumerated_Domain_Value_Definition_Source: Author

Detailed_Description:

Entity_Type:

Entity_Type_Label: ind-geo.pat
Entity_Type_Definition: Geologic units

Attribute:

Attribute_Label: PTYPE
Attribute_Definition: Geologic map unit attribute
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Qcp
Enumerated_Domain_Value_Definition: Playa deposits in volcanic craters (Holocene)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Q4
Enumerated_Domain_Value_Definition: Unit 4 (Holocene)--Alluvial fill of active channels

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Q3
Enumerated_Domain_Value_Definition:

Unit 3 (Holocene to Pleistocene)--Undissected to little dissected alluvial deposits of unstratified to weakly stratified sand and gravel.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Q3b
Enumerated_Domain_Value_Definition:

Subunit 3b-Little dissected deposits about 1 to 2 m above active channels.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Q3a
Enumerated_Domain_Value_Definition:

Subunit 3a--Little dissected deposits 1 to 3 m above active channels.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Q2
Enumerated_Domain_Value_Definition:

Unit 2 (Pleistocene)--Moderately to well dissected alluvial deposits of sand and gravel.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Q2c
Enumerated_Domain_Value_Definition:

Subunit 2c-Moderately dissected alluvial deposits about 1 to 5 m above adjacent drainages.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Q2b
Enumerated_Domain_Value_Definition:

Subunit 2b-Moderately dissected alluvial deposits about 2 to 6 m above adjacent drainages.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Q2a
Enumerated_Domain_Value_Definition:

Subunit 2a-Generally well-dissected alluvial deposits 5 to 10 m above adjacent drainages, or 1 to 5 m above adjacent Q2b deposits.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: QTta
Enumerated_Domain_Value_Definition:

Talus and colluvial deposits derived from cinder cones and basalt flows (Holocene to early Pliocene)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: QT1
Enumerated_Domain_Value_Definition:

Unit 1 (Pleistocene to Pliocene)--Dissected deposits with no relic pavement, 5 to 10 m above adjacent drainages.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: QTs
Enumerated_Domain_Value_Definition: Conglomerate and arkosic sandstone (Quaternary or Pliocene?)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: QTl
Enumerated_Domain_Value_Definition: Lake deposits of Valley Wells basin (Pleistocene to Pliocene)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: QTa
Enumerated_Domain_Value_Definition: Coarse ash and lapilli tuff (Pleistocene)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: QTt
Enumerated_Domain_Value_Definition:

Deposits of red oxidized scoria and black unoxidized scoria consisting of pebble to cobble size fragments

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: QTtb
Enumerated_Domain_Value_Definition:

Deposits of blocks and bombs, consisting of boulder-size fragments as much as 5 m in diameter.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: QTpb
Enumerated_Domain_Value_Definition: Pyroclastic breccia (Pleistocene to late Pliocene)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: QTf
Enumerated_Domain_Value_Definition: Lava flow (Pleistocene to late Pliocene)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: QTtc
Enumerated_Domain_Value_Definition: Tuffaceous breccia (Pleistocene to late Miocene)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Tt
Enumerated_Domain_Value_Definition: Tephra (early Pliocene to late Miocene)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Tpb
Enumerated_Domain_Value_Definition: Pyroclastic breccia (early Pliocene to late Miocene)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Tf
Enumerated_Domain_Value_Definition: Lava flow (early Pliocene to late Miocene)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Ta
Enumerated_Domain_Value_Definition: Volcanic rocks (middle Miocene)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Tp
Enumerated_Domain_Value_Definition: Peach Springs Tuff of Young and Brennan (1974) (early Miocene)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Ts
Enumerated_Domain_Value_Definition:

Sedimentary rocks-Fine-grained sandstone, siltstone, shale, fresh water limestone locally present near base of deposits.

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Tsb
Enumerated_Domain_Value_Definition: Sedimentary rocks

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: PD1
Enumerated_Domain_Value_Definition: Limestone (Permian to Devonian)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: CZs
Enumerated_Domain_Value_Definition: Siliciclastic rocks (Cambrian and Late Proterozoic)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: QTbi
Enumerated_Domain_Value_Definition: Basalt dikes and plugs (Holocene? to late Miocene)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: TKpt
Enumerated_Domain_Value_Definition: Pseudotachylite (Tertiary? or Cretaceous?)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: TKr
Enumerated_Domain_Value_Definition: Rhyolitic dikes (Tertiary? or Cretaceous?)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: TKm
Enumerated_Domain_Value_Definition: Mafic dikes (Tertiary? or Cretaceous?)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Km
Enumerated_Domain_Value_Definition: Mafic and intermediate dikes (Cretaceous)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Kap
Enumerated_Domain_Value_Definition:

Aplite, pegmatite, and fine- to medium-grained biotite monzogranite dikes (Cretaceous)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Kt
Enumerated_Domain_Value_Definition: Felsic members of Teutonia batholith

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Kti
Enumerated_Domain_Value_Definition: Intermediate members of Teutonia batholith

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Ktm
Enumerated_Domain_Value_Definition: Mafic member of Teutonia batholith

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Zya
Enumerated_Domain_Value_Definition: Alaskite dike (Late Proterozoic? or Middle Proterozoic?)

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: X2
Enumerated_Domain_Value_Definition: Mafic gneiss

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: X1
Enumerated_Domain_Value_Definition: Felsic gneiss

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Xu
Enumerated_Domain_Value_Definition: Undivided mafic and felsic gneiss

Detailed_Description:

Entity_Type:

Entity_Type_Label: ind-smp.pat
Entity_Type_Definition: Sample locations

Attribute:

Attribute_Label: pttype
Attribute_Definition: Description of the type of sample
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Sample
Enumerated_Domain_Value_Definition: Sample for K/Ar analysis

Attribute:

Attribute_Label: sampno
Attribute_Definition:

The sample number or designator as depicted on the map and in the report

Attribute_Domain_Values:

Unrepresentable_Domain: Identifier without further scientific significance

Detailed_Description:

Entity_Type:

Entity_Type_Label: ind-str.pat
Entity_Type_Definition: Point Attribubes for the geologic structure layer, ind-str

Attribute:

Attribute_Label: PTTYPE
Attribute_Definition: Description of the structural measurement
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: bedding
Enumerated_Domain_Value_Definition: stratigraphic bedding

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: foliation
Enumerated_Domain_Value_Definition: foliation

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: horz bedding
Enumerated_Domain_Value_Definition: horizontal (flat) bedding

Attribute_Domain_Values:

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_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_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 360
Attribute_Units_of_Measure: degrees, based on the 'right-hand-rule'

Overview_Description:

Entity_and_Attribute_Overview:

From their origin in ArcInfo and the Alacarte package, each coverage contains topological and bookkeeping attributes of little or no scientific interest; only the attributes of scientific significance are described in detail here. The other attributes are AREA, PERIMETER, LENGTH, FNODE#, TNODE#, LPOLY#, RPOLY#, cover#, cover-ID, SEL, and SYMB.
The primary layer is the geology layer (ind-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 (ind-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 (ind-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).
The geologic structure layer (ind-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 (ind- 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.
Features representing location of samples (ind-smp) discussed in the original report, are described in the point attribute table (ind-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: http://pubs.usgs.gov/of/2002/0272/pdf/of02-272_1a.pdf

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: Indian Spring, 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: USGS Open-File Report 02-272
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- 181: Geologic Map of the Indian Spring 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_Information_Content:

Geologic units, structural features and measurements, and sample locations

File_Decompression_Technique: no compression applied
Transfer_Size: 2

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: http://pubs.usgs.gov/of/2002/0272/of02-272_2a.e00
Network_Resource_Name: http://pubs.usgs.gov/of/2002/0272/of02-272_2b.e00
Network_Resource_Name: http://pubs.usgs.gov/of/2002/0272/of02-272_2c.e00

Fees: none

Metadata_Reference_Information:

Metadata_Date: 20160613
Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Peter N Schweitzer
Contact_Organization: USGS Midwest Area

Contact_Position:

Collection manager, USGS Geoscience Data Clearinghouse, http://geo-nsdi.er.usgs.gov/

Contact_Address:

Address_Type: mailing address
Address:

Mail Stop 954
12201 Sunrise Valley Dr

City: Reston
State_or_Province: VA
Postal_Code: 20192-0002
Country: USA

Contact_Voice_Telephone: 703-648-6533
Contact_Facsimile_Telephone: 703-648-6252
Contact_Electronic_Mail_Address: pschweitzer@usgs.gov

Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

This page is <https://geo-nsdi.er.usgs.gov/metadata/open-file/02-272/metadata.html>