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