Geologic map of the Christian quadrangle, Alaska

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: Brosge, W.P., and Reiser, H.N.

Publication_Date: 2000

Title: Geologic map of the Christian quadrangle, Alaska

Edition: Version 1.0

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name: U.S. Geological Survey Open-File Report

Issue_Identification: USGS OFR 00-192

Online_Linkage: <http://geopubs.wr.usgs.gov/open-file/of00-192/>

Description:

Abstract:

This data set represents reconnaissance geologic mapping of the Christian quadrangle, Alaska. It is used to create the mapsheet in USGS OFR 00-192, which shows bedrock and surficial deposits of the 1:250,000 scale Christian quadrangle in northern Alaska.

Purpose:

Digital representation of geologic mapping facilitates the presentation and analysis of earth-science data. Digital maps may be displayed at any scale or projection, however the geologic data in this coverage is not intended for use at a scale larger than 1:250,000.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2000

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -147.0

East_Bounding_Coordinate: -144.0

North_Bounding_Coordinate: 68.0

South_Bounding_Coordinate: 67.0

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: geology

Theme_Keyword: bedrock geology

Theme_Keyword: surficial geology

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Alaska

Place_Keyword: Christian

Place_Keyword: Porcupine Plateau

Place_Keyword: Brooks Range

Place_Keyword: Yukon Flats

Access_Constraints: None

Use_Constraints: None

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Person: William P. Brosge

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: 345 Middlefield Road MS 901

City: Menlo Park

State_or_Province: CA

Postal_Code: 94025-3591

Country: USA

Contact_Voice_Telephone: 650-329-5741

Contact_Electronic_Mail_Address: brosge@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name: csopenfile.gif

Browse_Graphic_File_Description: Image of the map sheet. Does not include pamphlet.

Browse_Graphic_File_Type: GIF

Data_Set_Credit:

This digital coverage was created by Keith Labay and David Pray, Raytheon STX contractors.

Native_Data_Set_Environment:

Data set was created using ESRI ARC/Info version 7 on a Unix platform.

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The linework was captured by hand digitizing from a hand-drawn 1:250,000 scale paper map. Vector and polygon attributes were obtained from a compilation of field maps and other compilations. The digital data has been visually checked by and the geologic map has undergone technical review.

Logical_Consistency_Report:

This geology data set is a network coverage containing arcs and polygons. Each polygon has a coded attribute designating the mapped geologic unit. Faults, stratigraphic contacts, and other linear features are represented as arcs. When a fault is also a stratigraphic contact, only a single arc is present. Dangling arcs may be present (faults, moraines, etc.)

Coverage csfold is an arc coverage containing fold axes information. Coverage csstruct is a point coverage, with annotation, containing strike and dip information. Coverage csfossil contains the fossil locations.

Completeness_Report:

These coverages were used to create the map portion of the Christian geologic map. Text files, tables, graphics, and topography shown on the map sheet or pamphlet are not included.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Users of this digital geologic map should respect the intentions of the original mappers and the limitations of the map. This geologic map compilation is intended to be used at a scale of 1:250,000; it is not intended to be used at a more detailed scale.

Lineage:

Process_Step:

Process_Description:

This data was hand digitized in ARC/Info from a hand-drawn 1:250,000 scale paper map. The arcs and polygons were attributed. For the purpose of distribution, the coverage has been converted to an interchange format file using the ARC/Info export command.

Process_Date: 1999

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Person: Nora Shew

Contact_Address:

Address_Type: mailing and physical address

Address: 4200 University Drive

City: Anchorage

State_or_Province: AK

Postal_Code: 99508-4667

Country: USA

Contact_Voice_Telephone: 907-561-1181

Contact_Electronic_Mail_Address: nshew@usgs.gov

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator

Universal_Transverse_Mercator:

UTM_Zone_Number: 6

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996

Longitude_of_Central_Meridian: -147

Latitude_of_Projection_Origin: 0.0

False_Easting: 500000

False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 250

Ordinate_Resolution: 250

Planar_Distance_Units: meters

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: arcs

Entity_Type_Definition:

Characteristic of the arc features in coverage csgeol are coded in csgeol.aat, the arc attribute table. The .aat consists of the following items: ARC-CODE and LINETYPE

Entity_Type_Definition_Source: This data set

Attribute:

Attribute_Label: arc-code

Attribute_Definition:

Arc-code is a positive integer value (3 3 I) item in the arc attribute table. Values range from 0 to 99. Arc-code describes the stratigraphic boundary, fault, or other linear feature. The code is described by the item LINETYPE.

Attribute_Definition_Source: this coverage

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 1

Enumerated_Domain_Value_Definition: Stratigraphic or intrusive contact, location certain

Enumerated_Domain:

Enumerated_Domain_Value: 2

Enumerated_Domain_Value_Definition: Stratigraphic or intrusive contact, location approximate

Enumerated_Domain:

Enumerated_Domain_Value: 3

Enumerated_Domain_Value_Definition: Stratigraphic or intrusive contact, location inferred

Enumerated_Domain:

Enumerated_Domain_Value: 7

Enumerated_Domain_Value_Definition: Shoreline or riverbank

Enumerated_Domain:

Enumerated_Domain_Value: 9

Enumerated_Domain_Value_Definition: Boundary of local basal conglomerate

Enumerated_Domain:

Enumerated_Domain_Value: 10

Enumerated_Domain_Value_Definition: Thrust fault, location certain; teeth on right from origin

Enumerated_Domain:

Enumerated_Domain_Value: 11

Enumerated_Domain_Value_Definition: Thrust fault, location approximate; teeth on right from origin

Enumerated_Domain:

Enumerated_Domain_Value: 12

Enumerated_Domain_Value_Definition: Thrust fault, location inferred; teeth on right from origin

Enumerated_Domain:

Enumerated_Domain_Value: 13

Enumerated_Domain_Value_Definition: Moraine

Enumerated_Domain:

Enumerated_Domain_Value: 30

Enumerated_Domain_Value_Definition: Fault, sense of displacement uncertain, location certain

Enumerated_Domain:

Enumerated_Domain_Value: 31

Enumerated_Domain_Value_Definition: Fault, sense of displacement uncertain; location approximate

Enumerated_Domain:

Enumerated_Domain_Value: 32

Enumerated_Domain_Value_Definition: Fault, sense of displacement uncertain, location inferred

Enumerated_Domain:

Enumerated_Domain_Value: 51

Enumerated_Domain_Value_Definition: Concealed contact

Enumerated_Domain:

Enumerated_Domain_Value: 52

Enumerated_Domain_Value_Definition: Concealed fault

Enumerated_Domain:

Enumerated_Domain_Value: 53

Enumerated_Domain_Value_Definition: Concealed thrust fault

Enumerated_Domain:

Enumerated_Domain_Value: 99

Enumerated_Domain_Value_Definition: Bounding line of coverage

Detailed_Description:

Entity_Type:

Entity_Type_Label: polygons

Entity_Type_Definition:

Characteristic of the polygon features are coded in the polygon attribute table. Table csgeol.pat includes of the following items: CLASS, UNIT (geologic unit label), and UNITTYPE (geologic unit).

Entity_Type_Definition_Source: this coverage

Attribute:

Attribute_Label: class

Attribute_Definition:

Class is a positive integer value (4 5 B) item in the polygon attribute table. Values range from 102 to 1170. The table csgeol.lut contains class and the corresponding geologic label. See USGS Open-File Report 00-192 for full descriptions of the geologic units.

Attribute_Definition_Source: USGS Open-File Report 00-192

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 102

Enumerated_Domain_Value_Definition: water

Enumerated_Domain:

Enumerated_Domain_Value: 110

Enumerated_Domain_Value_Definition: Qu - Undifferentiated deposits (Quaternary)

Enumerated_Domain:

Enumerated_Domain_Value: 111

Enumerated_Domain_Value_Definition: Qal - Alluvium (Holocene)

Enumerated_Domain:

Enumerated_Domain_Value: 120

Enumerated_Domain_Value_Definition: Qg - Glacial drift undifferentiated (Pleistocene)

Enumerated_Domain:

Enumerated_Domain_Value: 121

Enumerated_Domain_Value_Definition:

Qg1 - Dift of Itkillik I glaciation (Middle to Upper Pleistocene)

Enumerated_Domain:

Enumerated_Domain_Value: 122

Enumerated_Domain_Value_Definition: Qg2 - Dift of Itkillik II glaciation (Upper Pleistocene)

Enumerated_Domain:

Enumerated_Domain_Value: 123

Enumerated_Domain_Value_Definition: Qgs - Drift of Sagavanirktok glaciation (Middle(?) Pleistocene)

Enumerated_Domain:

Enumerated_Domain_Value: 125

Enumerated_Domain_Value_Definition: Qt - Terrace deposits (Pleistocene)

Enumerated_Domain:

Enumerated_Domain_Value: 130

Enumerated_Domain_Value_Definition:

Jol - Ophiolitic sequence; layered leucogabbro (Middle Jurassic)

Enumerated_Domain:

Enumerated_Domain_Value: 131

Enumerated_Domain_Value_Definition: Jou - Ophiolitic sequence; ultramafic rocks (Middle Jurassic)

Enumerated_Domain:

Enumerated_Domain_Value: 135

Enumerated_Domain_Value_Definition: Kgr - Granite (Cretaceous)

Enumerated_Domain:

Enumerated_Domain_Value: 140

Enumerated_Domain_Value_Definition: Trgw - Graywacke (Middle or Lower Triassic)

Enumerated_Domain:

Enumerated_Domain_Value: 145

Enumerated_Domain_Value_Definition: TrMc - Chert and argillite (Triassic(?) through Mississippian)

Enumerated_Domain:

Enumerated_Domain_Value: 150

Enumerated_Domain_Value_Definition: JMv - Mafic volcanic rocks (Jurassic through Mississippian)

Enumerated_Domain:

Enumerated_Domain_Value: 151

Enumerated_Domain_Value_Definition: JMvr - Rhyolite and dacite (Jurassic through Mississippian)

Enumerated_Domain:

Enumerated_Domain_Value: 152

Enumerated_Domain_Value_Definition: JMg - Greenstone (Jurassic through Mississippian)

Enumerated_Domain:

Enumerated_Domain_Value: 154

Enumerated_Domain_Value_Definition: MzPzs - Shale (Mesozoic or Paleozoic)

Enumerated_Domain:

Enumerated_Domain_Value: 155

Enumerated_Domain_Value_Definition: MzPzg - Greenstone (Triassic or Upper Paleozoic)

Enumerated_Domain:

Enumerated_Domain_Value: 160

Enumerated_Domain_Value_Definition: Dsl - Sandy limestone (Upper Devonian)

Enumerated_Domain:

Enumerated_Domain_Value: 161

Enumerated_Domain_Value_Definition: Dsq - Quartzite and slate (Devonian)

Enumerated_Domain:

Enumerated_Domain_Value: 162

Enumerated_Domain_Value_Definition: Ds - Phyllite (Devonian)

Enumerated_Domain:

Enumerated_Domain_Value: 165

Enumerated_Domain_Value_Definition: Dpm - Phyllite and metamorphosed sandstone (Devonian)

Enumerated_Domain:

Enumerated_Domain_Value: 166

Enumerated_Domain_Value_Definition: Dmw - Metamorphosed wacke (Devonian)

Enumerated_Domain:

Enumerated_Domain_Value: 167

Enumerated_Domain_Value_Definition: Dw - Wacke (Devonian)

Enumerated_Domain:

Enumerated_Domain_Value: 170

Enumerated_Domain_Value_Definition: Dhf - Hunt Fork Shale, shale member (Upper Devonian)

Enumerated_Domain:

Enumerated_Domain_Value: 171

Enumerated_Domain_Value_Definition: Dvt - Volcanic rocks and tuff (Upper Devonian)

Enumerated_Domain:

Enumerated_Domain_Value: 180

Enumerated_Domain_Value_Definition: Dk - Kanayut Conglomerate (Upper Devonian)

Enumerated_Domain:

Enumerated_Domain_Value: 190

Enumerated_Domain_Value_Definition: Dkq - Kanayut Conglomerate, quartzite member (Upper Devonian)

Enumerated_Domain:

Enumerated_Domain_Value: 195

Enumerated_Domain_Value_Definition: Dn - Noatak Sandstone (Upper Devonian)

Enumerated_Domain:

Enumerated_Domain_Value: 197

Enumerated_Domain_Value_Definition: Dg - Greenstone (Devonian and younger?)

Enumerated_Domain:

Enumerated_Domain_Value: 200

Enumerated_Domain_Value_Definition:

Dbsg - Beaucoup Formation, siltstone, greenstone and wacke member (Upper and Middle(?) Devonian)

Enumerated_Domain:

Enumerated_Domain_Value: 210

Enumerated_Domain_Value_Definition:

Dbl - Beaucoup Formation cherty limestone (Upper and Middle(?) Devonian)

Enumerated_Domain:

Enumerated_Domain_Value: 211

Enumerated_Domain_Value_Definition:

Dbls - Beaucoup Formation, limestone and siltstone member (Upper Devonian)

Enumerated_Domain:

Enumerated_Domain_Value: 215

Enumerated_Domain_Value_Definition: DOs - Skajit Limestone (Devonian through Ordovician)

Enumerated_Domain:

Enumerated_Domain_Value: 220

Enumerated_Domain_Value_Definition: Pzs - Quartz-muscovite schist (Lower Paleozoic)

Enumerated_Domain:

Enumerated_Domain_Value: 221

Enumerated_Domain_Value_Definition: Pzbs - Biotite schist (Lower Paleozoic)

Enumerated_Domain:

Enumerated_Domain_Value: 222

Enumerated_Domain_Value_Definition: TrMcs - Chert adn slate (Triassic(?) through Mississippian)

Enumerated_Domain:

Enumerated_Domain_Value: 1170

Enumerated_Domain_Value_Definition:

Dhf - Hunt Fork Shale, local basal conglomerate (Upper Devonian)

Detailed_Description:

Entity_Type:

Entity_Type_Label: points

Entity_Type_Definition:

Characteristic of point features in coverage cssstruct are coded in csstruct.pat, the point attribute table. The .pat includes the following items: ANGLE, DIP, CODE, and POINTTYPE.

Entity_Type_Definition_Source: This data set

Attribute:

Attribute_Label: angle

Attribute_Definition:

Angle is a positive integer value (3 3 I) item in the point attribute table. Values may range from 0 to 360 degrees. The value is the azimuthal measurement of strike, where North is 0 degrees and values increase clockwise.

Attribute_Definition_Source: this coverage

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 360

Attribute_Units_of_Measure: degrees

Attribute:

Attribute_Label: dip

Attribute_Definition:

Dip is a positive integer value (3 3 I) in the point attribute table. Values may range from 0 to 90 degrees.

Attribute_Definition_Source: this coverage

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 90

Attribute_Units_of_Measure: degrees

Attribute:

Attribute_Label: code

Attribute_Definition:

Code is a positive integer value (3 3 I) item in csstruct.pat. It is a coded value representing the type of structure measured. Item pointtype is a text field which describes the type of measurement.

Attribute_Definition_Source: this coverage

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 20

Enumerated_Domain_Value_Definition: strike and dip of bedding

Enumerated_Domain:

Enumerated_Domain_Value: 21

Enumerated_Domain_Value_Definition: strike and dip of vertical beds

Enumerated_Domain:

Enumerated_Domain_Value: 23

Enumerated_Domain_Value_Definition: horizontal bed

Enumerated_Domain:

Enumerated_Domain_Value: 49

Enumerated_Domain_Value_Definition:

strike and direction of dip of beds from distant views or photo-interpretations

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: USGS Information Services

Contact_Address:

Address_Type: mailing address

Address:

Box 25286 Denver Federal Center

City: Denver

State_or_Province: CO

Postal_Code: 80225-0046

Country: USA

Contact_Voice_Telephone: 303-202-4200 or 1-888-ASK-USGS

Resource_Description: USGS OFR 00-192

Distribution_Liability:

Although this data has been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data, software, or related materials.

Metadata_Reference_Information:

Metadata_Date: 20000803

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Person: Nora Shew

Contact_Address:

Address_Type: mailing and physical address

Address: 4200 University Drive

City: Anchorage

State_or_Province: AK

Postal_Code: 99508-4667

Country: USA

Contact_Voice_Telephone: 907-561-1181

Contact_Electronic_Mail_Address: nshew@usgs.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998