Identification_Information: Citation: Citation_Information: Originator: Labay, Keith A. Originator: Wilson, Frederic H. Originator: Bleick, Heather Originator: Shew, Nora B. Publication_Date: 2008 Title: Digital data for the geology of the southern Brooks Range, Alaska Edition: ver 1.0 Geospatial_Data_Presentation_Form: digital data Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: OFR 2008-XXXX Online_Linkage: http//pubs.usgs.gov/of/2008/XXXX Larger_Work_Citation: Citation_Information: Originator: Till, Alison B. Originator: Dumoulin, Julie, A. Originator: Harris, Anita G. Originator: Moore, Thomas E. Originator: Bleick, Heather Originator: Siwiec, Benjamin Publication_Date: 2008 Title: Bedrock geologic map of the southern Brooks Range, Alaska, and accompanying conodont data Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Scientific Investigations Map Issue_Identification: SIM-XXXX Description: Abstract: The southern Brooks Range spans northern Alaska from west to east. It has tree- and shrub-covered lowlands and tundra-covered and rocky uplands. Much of the area has ridgelines reaching about 4000 feet, but the central part of the map area has ridgelines exceeding 6000 feet and peaks above 7000 feet. The geology includes the Brooks Range orogen, a contractional mountain belt with a foreland basin on its north side. This map has been compiled from published maps and papers, and unpublished mapping by the authors. This data set is a portion of a statewide geology database, which is being compiled by the U.S. Geological Survey's National Surveys and Analysis (NSA) project, whose goal is to compile geologic, geochemical, geophysical, and other data. Purpose: This data set represents part of a systematic effort to release geologic map data for the United States in a uniform manner. Geologic data in this series has been compiled from a wide variety of sources, published and unpublished, ranging from state and regional geologic maps to large-scale field mapping. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2008 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -162.0 East_Bounding_Coordinate: -146.0 North_Bounding_Coordinate: 68.0 South_Bounding_Coordinate: 66.75 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: geology Theme_Keyword: bedrock Theme_Keyword: orogen Theme_Keyword: schist belt Theme_Keyword: metamorphic Place: Place_Keyword_Thesaurus: Geographic names information system (GNIS) Place_Keyword: Alaska Place_Keyword: Brooks Range Place_Keyword: Baird Mountains Place_Keyword: Ambler River Place_Keyword: Survey Pass Place_Keyword: Wiseman Place_Keyword: Chandalar Place_Keyword: Christian Place_Keyword: Selawik Place_Keyword: Shungnak Place_Keyword: Bettles Place_Keyword: Beaver Access_Constraints: None Use_Constraints: None. Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Alison B. Till Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 4200 University Drive City: Anchorage State_or_Province: Alaska Postal_Code: 99508 Country: U.S.A. Contact_Voice_Telephone: 907-786-7444 Contact_Electronic_Mail_Address: atill@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: XXX Browse_Graphic_File_Description: XXX Browse_Graphic_File_Type: XXX Data_Set_Credit: This data set was prepared by Keith Labay (USGS), Nora Shew (USGS), David Pray (contractor), Nathan Pannkuk (contractor), Lana Cohen (contractor), Jeanie Yarnell (contractor) Native_Data_Set_Environment: Data set was created using ESRI ARC/Info version 7.2.1 on a Unix platform. Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: There were many types of source materials, of varying scale, used to compile this data set. Sources include previously published maps and unpublished mapping. The dates of the mapping range from the present to 1950's. Vector features were digitized on a large digitizing tablet or on screen from a scanned image. Vector and polygon attributes were assigned based on the original source. the digital data has been checked, and the geologic map has been technically reviewed and edited. Logical_Consistency_Report: Each geology coverage is a network coverage containing attributed arcs and polyons. 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, dike, etc.) Completeness_Report: The complete data set consists of 11 geology GIS converages. There is also an associated relational database of geologic units. Each coverage has the full or partial extent of a 1:250,000 scale quadrangle. A graphic representation of the database (map) and a report including complete geologic unit descriptions is provided in .pdf format. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: This data is presented for use at a nominal scale of 1:500,000. Lineage: Process_Step: Process_Description: Line work for the geology compilation was hand digitized from material of various media and scale. The arcs and polygons were attributed. The spatial databases are provided in UTM projection and geographic coordinates. The native ARC/Info coverages have been exported to an interchange file format, and also converted to shape files. Please note that shape files do not preserve arc directions, which help determine fault movement. Process_Date: 2007 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Frederic H. Wilson Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical Address: 4200 University Drive City: Anchorage State_or_Province: Alaska Postal_Code: 99508-4667 Country: U.S.A. Contact_Voice_Telephone: 907-786-7448 Contact_Electronic_Mail_Address: fwilson@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: 4 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9995 Longitude_of_Central_Meridian: -159.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000256 Ordinate_Resolution: 0.000256 Planar_Distance_Units: meters Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 5 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9995 Longitude_of_Central_Meridian: -153.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000256 Ordinate_Resolution: 0.000256 Planar_Distance_Units: meters 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: 0.9995 Longitude_of_Central_Meridian: -147.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000256 Ordinate_Resolution: 0.000256 Planar_Distance_Units: meters Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: polygons Entity_Type_Definition: Characteristics of the polygon features in the geology coverages are coded in the polygon attribute table. The table .pat includes the following items: CLASS, QCLASS, LITH2, SOURCE, NSACLASS, NSAMOD, LABEL, MIN_AGE, and MAX_AGE. Item LITH2 is used to generate the southern Brooks range map of Till and others, in press. NSACLASS is used for creating the generalized geologic map of Alaska. Items CLASS and SOURCE together identify the original mapping of the geologic unit. Entity_Type_Definition_Source: this data set Attribute: Attribute_Label: LITH2 Attribute_Definition: LITH2 is a positive integer value (4 5 B) item in the polygon attribute table. Values range discontinuously from 0 to 52090. LITH2 is a numeric code for the geologic unit (LABEL), as shown on the southern Brooks range map by Till and others, in press. LITH2 to LABEL is a one-to-one relationship. NOTE: Because of the limitations of common GIS fonts, the letters "C", "Mz", "Pz", "Tr", and "Z" are substituted for the standard symbols for "Cambrian", "Mesozoic", "Paleozoic", "Triassic", and "Proterozoic". Attribute_Definition_Source: this data set Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 100 Enumerated_Domain_Value_Definition: Qs - Surficial sedimentary deposits, undivided (Quaternary) Enumerated_Domain: Enumerated_Domain_Value: 102 Enumerated_Domain_Value_Definition: water Enumerated_Domain: Enumerated_Domain_Value: 2180 Enumerated_Domain_Value_Definition: Kvg - Volcanic lithic sandstone and mudstone (Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 5145 Enumerated_Domain_Value_Definition: KJm - Melange (Cretaceous to Jurassic) Enumerated_Domain: Enumerated_Domain_Value: 52000 Enumerated_Domain_Value_Definition: Dsq - Quartz-mica schist (Devonian) Enumerated_Domain: Enumerated_Domain_Value: 52001 Enumerated_Domain_Value_Definition: DZsc - Calcareous schist (Devonian to Proterozoic) Enumerated_Domain: Enumerated_Domain_Value: 52002 Enumerated_Domain_Value_Definition: PzZb - Metasedimentary rocks of Bluecloud Mountain (Paleozoic to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 52003 Enumerated_Domain_Value_Definition: Dg - Granitic orthogneiss (Devonian) Enumerated_Domain: Enumerated_Domain_Value: 52004 Enumerated_Domain_Value_Definition: Da - Ambler sequence (Devonian) Enumerated_Domain: Enumerated_Domain_Value: 52006 Enumerated_Domain_Value_Definition: Pzsg - Mafic schist (Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 52007 Enumerated_Domain_Value_Definition: Pzpg - Phyllite and graywacke (Paleozoic?) Enumerated_Domain: Enumerated_Domain_Value: 52008 Enumerated_Domain_Value_Definition: DZm - Metamorphic rocks (Devonian to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 52009 Enumerated_Domain_Value_Definition: JDab - Mafic metavolcanic and metaintrusive rocks, metachert, metalimestone, and amphibolite of the Angayucham terrane (Early Jurassic to Devonian) Enumerated_Domain: Enumerated_Domain_Value: 52011 Enumerated_Domain_Value_Definition: Zg - Granitic orthogneiss (Proterozoic) Enumerated_Domain: Enumerated_Domain_Value: 52012 Enumerated_Domain_Value_Definition: PzZem - Metamorphic rocks of the Ernie Lake area (Paleozoic to Proterozoic) Enumerated_Domain: Enumerated_Domain_Value: 52013 Enumerated_Domain_Value_Definition: Zam - Metamorphic rocks of Mt. Angayukaqsraq (Proterozoic) Enumerated_Domain: Enumerated_Domain_Value: 52015 Enumerated_Domain_Value_Definition: OZc - Older carbonate rocks of the Nanielik antiform (Middle Ordovician to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 52016 Enumerated_Domain_Value_Definition: DOc - Younger carbonate rocks of the Nanielik antiform (Middle Devonian to Ordovician) Enumerated_Domain: Enumerated_Domain_Value: 52017 Enumerated_Domain_Value_Definition: Dmu - Metasedimentary and lesser metaigneous rocks (Middle and Late Devonian) Enumerated_Domain: Enumerated_Domain_Value: 52018 Enumerated_Domain_Value_Definition: Dhf - Hunt Fork Shale (Late Devonian) Enumerated_Domain: Enumerated_Domain_Value: 52019 Enumerated_Domain_Value_Definition: Dl - Metalimestone (Devonian) Enumerated_Domain: Enumerated_Domain_Value: 52021 Enumerated_Domain_Value_Definition: PzZqs - Quartz-rich metasedimentary rocks (Paleozoic to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 52022 Enumerated_Domain_Value_Definition: Khs - Hammond River shear zone (Cretaceous?) Enumerated_Domain: Enumerated_Domain_Value: 52023 Enumerated_Domain_Value_Definition: Pzm - Marble (Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 52026 Enumerated_Domain_Value_Definition: TrCs - Sedimentary rocks (Triassic to Carboniferous) Enumerated_Domain: Enumerated_Domain_Value: 52027 Enumerated_Domain_Value_Definition: Ml - Carbonate rocks (Mississippian) Enumerated_Domain: Enumerated_Domain_Value: 52028 Enumerated_Domain_Value_Definition: MDk - Kanayut Conglomerate (Lower Mississippian? and Upper Devonian) Enumerated_Domain: Enumerated_Domain_Value: 52030 Enumerated_Domain_Value_Definition: Pzp - Phyllite (Paleozoic?) Enumerated_Domain: Enumerated_Domain_Value: 52032 Enumerated_Domain_Value_Definition: Pzj - Metasedimentary rocks of Jesse Mountain (Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 52034 Enumerated_Domain_Value_Definition: PzZbs - Biotite schist (Paleozoic to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 52035 Enumerated_Domain_Value_Definition: PzZsr - Ruby schist (Paleozoic to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 52036 Enumerated_Domain_Value_Definition: Km - Migmatite (Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 52037 Enumerated_Domain_Value_Definition: Kg - Granitic rocks (Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 52038 Enumerated_Domain_Value_Definition: Ks - Conglomerate, sandstone, and shale (Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 52039 Enumerated_Domain_Value_Definition: QTb - Basalt (Quaternary? or Tertiary?) Enumerated_Domain: Enumerated_Domain_Value: 52041 Enumerated_Domain_Value_Definition: DZsc - Calcareous schist; metachert and conglomerate subunit (Devonian to Proterozoic) Enumerated_Domain: Enumerated_Domain_Value: 52042 Enumerated_Domain_Value_Definition: Ozc - Older carbonate rocks of the Nanielik antiform; restricted to Ordovian strata only (Middle Ordovician to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 52043 Enumerated_Domain_Value_Definition: Dmu - Metasedimentary and lesser metaigneous rocks; volcanic-rock bearing (Middle and Late Devonian) Enumerated_Domain: Enumerated_Domain_Value: 52044 Enumerated_Domain_Value_Definition: Dhf - Hunt Fork Shale (Late Devonian) Enumerated_Domain: Enumerated_Domain_Value: 52045 Enumerated_Domain_Value_Definition: DZgn - Schist and paragneiss (Devonian to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 52046 Enumerated_Domain_Value_Definition: PzZcm - Metasedimentary and metavolcanic rocks, undivided (Paleozoic and Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 52047 Enumerated_Domain_Value_Definition: PzZm - Mafic schist (Paleozoic? to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 52048 Enumerated_Domain_Value_Definition: DZsm - Schist and marble, undivided (Devonian to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 52049 Enumerated_Domain_Value_Definition: Spl - Black phyllite and metalimestone (Silurian) Enumerated_Domain: Enumerated_Domain_Value: 52052 Enumerated_Domain_Value_Definition: Dmu - Metasedimentary and lesser metaigneous rocks; iron-rich and calcareous components (Middle and Late Devonian) Enumerated_Domain: Enumerated_Domain_Value: 52053 Enumerated_Domain_Value_Definition: Pzw - Metasedimentary rocks (Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 52055 Enumerated_Domain_Value_Definition: Pzw - Metasedimentary rocks; northern belt (Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 52056 Enumerated_Domain_Value_Definition: Dn - Noatak Sandstone (Devonian) Enumerated_Domain: Enumerated_Domain_Value: 52057 Enumerated_Domain_Value_Definition: SCvs - Volcanic and sedimentary rocks (Silurian to Cambrian) Enumerated_Domain: Enumerated_Domain_Value: 52061 Enumerated_Domain_Value_Definition: Mkl - Kayak Shale of Endicott Group and Lisburne Group (Mississippian) Enumerated_Domain: Enumerated_Domain_Value: 52062 Enumerated_Domain_Value_Definition: Mu - Metasedimentary rocks, undivided (Mississippian) Enumerated_Domain: Enumerated_Domain_Value: 52063 Enumerated_Domain_Value_Definition: DZsc - Calcareous schist; abundant albite porphyroblasts (Devonian to Proterozoic) Enumerated_Domain: Enumerated_Domain_Value: 52065 Enumerated_Domain_Value_Definition: Pzbq - Black quartzite (Paleozoic?) Enumerated_Domain: Enumerated_Domain_Value: 52066 Enumerated_Domain_Value_Definition: Pzb - Black phyllite and siliceous phyllite (Paleozoic?) Enumerated_Domain: Enumerated_Domain_Value: 52067 Enumerated_Domain_Value_Definition: PzZg - Granitic rocks (Paleozoic to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 52068 Enumerated_Domain_Value_Definition: Zam - Metamorphic rocks of Mt. Angayukaqsraq (Proterozoic) Enumerated_Domain: Enumerated_Domain_Value: 52069 Enumerated_Domain_Value_Definition: DOb - Baird Group (Devonian to Ordovician) Enumerated_Domain: Enumerated_Domain_Value: 52070 Enumerated_Domain_Value_Definition: MDer - Eli River sequence (Mississippian and Devonian) Enumerated_Domain: Enumerated_Domain_Value: 52071 Enumerated_Domain_Value_Definition: Mcp - Carbonaceous chert and siliceous phyllite (Mississippian) Enumerated_Domain: Enumerated_Domain_Value: 52073 Enumerated_Domain_Value_Definition: MzPzs - Serpentintite (Mesozoic? to Paleozoic?) Enumerated_Domain: Enumerated_Domain_Value: 52074 Enumerated_Domain_Value_Definition: MDe - Endicott Group, undivided (Mississippian and Devonian) Enumerated_Domain: Enumerated_Domain_Value: 52075 Enumerated_Domain_Value_Definition: JDk - Rocks of the Kivivik Creek sequence (Jurassic to Devonian) Enumerated_Domain: Enumerated_Domain_Value: 52076 Enumerated_Domain_Value_Definition: MzDm - Igneous and sedimentary rocks of the Maiyumerak Mountains (Mesozoic? to Devonian) Enumerated_Domain: Enumerated_Domain_Value: 52077 Enumerated_Domain_Value_Definition: Mc - Quartz-rich conglomerate (Mississippian?) Enumerated_Domain: Enumerated_Domain_Value: 52081 Enumerated_Domain_Value_Definition: Dps - Lithic sandstone and shale (Devonian) Enumerated_Domain: Enumerated_Domain_Value: 52083 Enumerated_Domain_Value_Definition: Dps - Lithic sandstone and shale; schistose (Devonian) Enumerated_Domain: Enumerated_Domain_Value: 52084 Enumerated_Domain_Value_Definition: DSc - Carbonate rocks of Cosmos Hills (Devonian and Silurian) Enumerated_Domain: Enumerated_Domain_Value: 52085 Enumerated_Domain_Value_Definition: Pzbs - Black metasedimentary rocks (Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 52086 Enumerated_Domain_Value_Definition: Pzpc - Carbonate rocks of phyllite belt (Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 52087 Enumerated_Domain_Value_Definition: Pzsm - Marble of the Schist belt (Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 52088 Enumerated_Domain_Value_Definition: Mkkl - Kekiktuk Conglomerate(?), Kayak Shale of Endicott Group, and Lisburne Group (Mississippian) Enumerated_Domain: Enumerated_Domain_Value: 52089 Enumerated_Domain_Value_Definition: MDk - Kanayut Conglomerate; area not differentiated from Noatak Sandstone (Lower Mississippian? and Upper Devonian) Enumerated_Domain: Enumerated_Domain_Value: 52090 Enumerated_Domain_Value_Definition: JCs - Sedimentary rocks (Jurassic to Carboniferous) Attribute: Attribute_Label: NSACLASS Attribute_Definition: NSACLASS is a positive integer value (4 5 B) item in the polygon attribute table. Values range discontinuously from 100 to 9325. NSACLASS is a numeric code for the geologic unit for the statewide database. This data set represents a generalized map, thus it is possible that a geologic unit consists of multiple NSACLASS values. Each NSACLASS matches to a geologic unit label in LABEL and has minimum (MIN_AGE) and maximum (MAX_AGE) range, given in million of years (my). Supplemental attribute tables included with this data set contain additional descriptive information of each geologic unit. A user may use items SOURCE and CLASS to retrieve information about the original units from which these generalized units were formed. NOTE: Because of the limitations of common GIS fonts, the letters "C", "Mz", "Pz", "Tr", and "Z" are substituted for the standard symbols for "Cambrian", "Mesozoic", "Paleozoic","Triassic", and "Proterozoic". Attribute_Definition_Source: this data set Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 100 Enumerated_Domain_Value_Definition: Qs - Surficial sedimentary deposits, undivided (Quaternary); QCLASS = 1000 Enumerated_Domain: Enumerated_Domain_Value: 102 Enumerated_Domain_Value_Definition: water; QCLASS = 102 Enumerated_Domain: Enumerated_Domain_Value: 350 Enumerated_Domain_Value_Definition: QTb - Basalt (Quaternary? or Tertiary?) Enumerated_Domain: Enumerated_Domain_Value: 1990 Enumerated_Domain_Value_Definition: Ks - Conglomerate, sandstone, and shale (Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 2030 Enumerated_Domain_Value_Definition: Ks - Conglomerate, sandstone, and shale (Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 2180 Enumerated_Domain_Value_Definition: Kvg - Volcanic lithic sandstone and mudstone (Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 2492 Enumerated_Domain_Value_Definition: Kg - Granitic rocks (Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 2610 Enumerated_Domain_Value_Definition: Km - Migmatite (Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 2650 Enumerated_Domain_Value_Definition: Khs - Hammond River shear zone (Cretaceous?) Enumerated_Domain: Enumerated_Domain_Value: 3498 Enumerated_Domain_Value_Definition: MzPzs - Serpentinite (Mesozoic? to Paleozoic?) Enumerated_Domain: Enumerated_Domain_Value: 4951 Enumerated_Domain_Value_Definition: MzDm - Igneous and sedimentary rocks of the Maiyumerak Mountains (Mesozoic? to Devonian) Enumerated_Domain: Enumerated_Domain_Value: 5001 Enumerated_Domain_Value_Definition: JDk - Rocks of the Kivivik Creek sequence (Jurassic to Devonian) Enumerated_Domain: Enumerated_Domain_Value: 5003 Enumerated_Domain_Value_Definition: JCs - Sedimentary rocks (Jurassic to Carboniferous) Enumerated_Domain: Enumerated_Domain_Value: 5004 Enumerated_Domain_Value_Definition: TrCs - Sedimentary rocks (Triassic to Carboniferous) Enumerated_Domain: Enumerated_Domain_Value: 5133 Enumerated_Domain_Value_Definition: JDab - Mafic metavolcanic and metaintrusive rocks, metachert, metalimestone, and amphibolite of the Angayucham terrane (Early Jurassic to Devonian) Enumerated_Domain: Enumerated_Domain_Value: 5140 Enumerated_Domain_Value_Definition: JDab - Mafic metavolcanic and metaintrusive rocks, metachert, metalimestone, and amphibolite of the Angayucham terrane (Early Jurassic to Devonian) Enumerated_Domain: Enumerated_Domain_Value: 5145 Enumerated_Domain_Value_Definition: KJm - Melange (Cretaceous to Jurassic?) Enumerated_Domain: Enumerated_Domain_Value: 5525 Enumerated_Domain_Value_Definition: DSc - Carbonate rocks of Cosmos Hills (Devonian and Silurian) Enumerated_Domain: Enumerated_Domain_Value: 5560 Enumerated_Domain_Value_Definition: Pzp - Phyllite (Paleozoic?) Enumerated_Domain: Enumerated_Domain_Value: 5565 Enumerated_Domain_Value_Definition: Pzpg - Phyllite and graywacke (Paleozoic?) Enumerated_Domain: Enumerated_Domain_Value: 5570 Enumerated_Domain_Value_Definition: Pzpc - Carbonate rocks of phyllite belt (Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 6200 Enumerated_Domain_Value_Definition: Mcp - Carbonaceous chert and siliceous phyllite (Mississippian) Enumerated_Domain: Enumerated_Domain_Value: 6300 Enumerated_Domain_Value_Definition: MDe - Endicott Group, undivided (Mississippian and Devonian) Enumerated_Domain: Enumerated_Domain_Value: 6305 Enumerated_Domain_Value_Definition: Mkkl - Kekiktuk Conglomerate(?), Kayak Shale of Endicott Group, and Lisburne Group (Mississippian) Enumerated_Domain: Enumerated_Domain_Value: 6320 Enumerated_Domain_Value_Definition: Ml - Carbonate rocks (Mississippian) Enumerated_Domain: Enumerated_Domain_Value: 6328 Enumerated_Domain_Value_Definition: Mkl - Kayak Shale of Endicott Group and Lisburne Group (Mississippian) Enumerated_Domain: Enumerated_Domain_Value: 6331 Enumerated_Domain_Value_Definition: Pzbs - Black metasedimentary rocks (Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 6360 Enumerated_Domain_Value_Definition: Mc - Quartz-rich conglomerate (Mississippian?) Enumerated_Domain: Enumerated_Domain_Value: 6365 Enumerated_Domain_Value_Definition: Mu - Metasedimentary rocks, undivided (Mississippian) Enumerated_Domain: Enumerated_Domain_Value: 6686 Enumerated_Domain_Value_Definition: Spl - Black phyllite and metalimestone (Silurian) Enumerated_Domain: Enumerated_Domain_Value: 6720 Enumerated_Domain_Value_Definition: SCvs - Volcanic and sedimentary rocks (Silurian to Cambrian) Enumerated_Domain: Enumerated_Domain_Value: 6850 Enumerated_Domain_Value_Definition: Pzj - Metasedimentary rocks of Jesse Mountain (Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 6900 Enumerated_Domain_Value_Definition: Dn - Noatak Sandstone (Devonian) Enumerated_Domain: Enumerated_Domain_Value: 6914 Enumerated_Domain_Value_Definition: MDk - Kanayut Conglomerate (Lower Mississippian? and Upper Devonian) Enumerated_Domain: Enumerated_Domain_Value: 6915 Enumerated_Domain_Value_Definition: MDk - Kanayut Conglomerate (Lower Mississippian? and Upper Devonian) Enumerated_Domain: Enumerated_Domain_Value: 6925 Enumerated_Domain_Value_Definition: Dhf - Hunt Fork Shale (Late Devonian) Enumerated_Domain: Enumerated_Domain_Value: 6927 Enumerated_Domain_Value_Definition: Dmu - Metasedimentary and lesser metaigneous rocks (Middle and Late Devonian) Enumerated_Domain: Enumerated_Domain_Value: 6951 Enumerated_Domain_Value_Definition: Dl - Metalimestone (Devonian) Enumerated_Domain: Enumerated_Domain_Value: 6972 Enumerated_Domain_Value_Definition: Dmu - Metasedimentary and lesser metaigneous rocks (Middle and Late Devonian) Enumerated_Domain: Enumerated_Domain_Value: 6973 Enumerated_Domain_Value_Definition: Dmu - Metasedimentary and lesser metaigneous rocks (Middle and Late Devonian) Enumerated_Domain: Enumerated_Domain_Value: 6980 Enumerated_Domain_Value_Definition: DOc - Younger carbonate rocks of the Nanielik antiform (Middle Devonian to Ordovician) Enumerated_Domain: Enumerated_Domain_Value: 6982 Enumerated_Domain_Value_Definition: MDer - Eli River sequence (Mississippian and Devonian) Enumerated_Domain: Enumerated_Domain_Value: 6983 Enumerated_Domain_Value_Definition: Pzm - Marble (Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 7000 Enumerated_Domain_Value_Definition: Pzsg - Mafic schist (Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 7200 Enumerated_Domain_Value_Definition: Dps - Lithic sandstone and shale (Devonian) Enumerated_Domain: Enumerated_Domain_Value: 7215 Enumerated_Domain_Value_Definition: Pzsm - Marble of the Schist belt (Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 7225 Enumerated_Domain_Value_Definition: Dhf - Hunt Fork Shale (Late Devonian) Enumerated_Domain: Enumerated_Domain_Value: 7235 Enumerated_Domain_Value_Definition: Pzb - Black phyllite and siliceous phyllite (Paleozoic?) Enumerated_Domain: Enumerated_Domain_Value: 7250 Enumerated_Domain_Value_Definition: Dg - Granitic orthogneiss (Devonian) Enumerated_Domain: Enumerated_Domain_Value: 7260 Enumerated_Domain_Value_Definition: Da - Ambler sequence (Devonian) Enumerated_Domain: Enumerated_Domain_Value: 7360 Enumerated_Domain_Value_Definition: DZsm - Schist and marble, undivided (Devonian to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 7361 Enumerated_Domain_Value_Definition: DZgn - Schist and paragneiss (Devonian to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 7740 Enumerated_Domain_Value_Definition: OZc - Older carbonate rocks of the Nanielik antiform (Middle Ordovician to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 7741 Enumerated_Domain_Value_Definition: OZc - Older carbonate rocks of the Nanielik antiform (Middle Ordovician to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 8601 Enumerated_Domain_Value_Definition: PzZbs - Biotite schist (Paleozoic to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 8602 Enumerated_Domain_Value_Definition: Dsq - Quartz-mica schist (Devonian) Enumerated_Domain: Enumerated_Domain_Value: 8603 Enumerated_Domain_Value_Definition: PzZqs - Quartz-rich metasedimentary rocks (Paleozoic to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 8604 Enumerated_Domain_Value_Definition: PzZb - Metasedimentary rocks of Bluecloud Mountain (Paleozoic to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 8605 Enumerated_Domain_Value_Definition: DZsc - Calcareous schist (Devonian to Proterozoic) Enumerated_Domain: Enumerated_Domain_Value: 8607 Enumerated_Domain_Value_Definition: DZsc - Calcareous schist (Devonian to Proterozoic) Enumerated_Domain: Enumerated_Domain_Value: 8608 Enumerated_Domain_Value_Definition: DZsc - Calcareous schist (Devonian to Proterozoic) Enumerated_Domain: Enumerated_Domain_Value: 8611 Enumerated_Domain_Value_Definition: PzZem - Metamorphic rocks of the Ernie Lake area (Paleozoic to Proterozoic) Enumerated_Domain: Enumerated_Domain_Value: 8655 Enumerated_Domain_Value_Definition: PzZcm - Metasedimentary and metavolcanic rocks, undivided (Paleozoic and Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 8661 Enumerated_Domain_Value_Definition: PzZm - Mafic schist (Paleozoic? to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 8852 Enumerated_Domain_Value_Definition: DZm - Metamorphic rocks (Devonian to Proterozoic?) Enumerated_Domain: Enumerated_Domain_Value: 9045 Enumerated_Domain_Value_Definition: PzZg - Phyllite and graywacke (Paleozoic?) Enumerated_Domain: Enumerated_Domain_Value: 9060 Enumerated_Domain_Value_Definition: Zg - Granitic orthogneiss (Proterozoic) Enumerated_Domain: Enumerated_Domain_Value: 9300 Enumerated_Domain_Value_Definition: Zam - Metamorphic rocks of Mt. Angayukaqsraq (Proterozoic) Enumerated_Domain: Enumerated_Domain_Value: 9325 Enumerated_Domain_Value_Definition: PzZsr - Ruby schist (Paleozoic to Proterozoic?) Attribute: Attribute_Label: NSAMOD Attribute_Definition: NSAMOD is a character (8 10 C) item in the polygon attribute table. It contains modifiers of the geologic unit. Attribute_Definition_Source: this data set Attribute_Domain_Values: Unrepresentable_Domain: HFS - contact metamorphism, hornfels Attribute: Attribute_Label: SOURCE Attribute_Definition: SOURCE is a character (6 8 C) item found in both the arc and polygon attribute tables. The values are abbreviated codes representing the original source reference for the polygon or arc feature. The format for SOURCE is XX###, wher XX is a two letter code for the 1:250,000 scale quadrangle and ### is a three digit number (with leading zeros). All source codes with '001' are unspecified sources for water and ice features, often paper topographic maps, and DRG or DLG files. Attribute_Definition_Source: this data set Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: AR003 Enumerated_Domain_Value_Definition: Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew, Nora, in prep., Reconnaissance geologic map and digital data for the Yukon-Koyukuk basin, Alaska: U.S. Geological Survey Scientific Investigations Series Map SIM-2909, scale 1:500,000. Enumerated_Domain: Enumerated_Domain_Value: AR004 Enumerated_Domain_Value_Definition: Till. A.B., Dumoulin, J.A., Harris, A.G., Moore, T.E., Bleick, Heather, and Siwiec, Benjamin, in press, Bedrock geologic map of the southern Brooks Range, Alaska, and accompanying conodont data: U.S. Geological Survey Scientific Investigations Map SIM-XXXX, scale 1:500,000. Enumerated_Domain: Enumerated_Domain_Value: BM004 Enumerated_Domain_Value_Definition: Till, A.B., Dumoulin, J.A., Harris, A.G., Moore, T.E., Bleick, Heather, and Siwiec, Benjamin, in press, Bedrock geologic map of the southern Brooks Range, Alaska, and accompanying conodont data: U.S. Geological Survey Scientific Investigations Map SIM-XXXX, scale 1:500,000. Enumerated_Domain: Enumerated_Domain_Value: BT002 Enumerated_Domain_Value_Definition: Patton, W.W., Jr., and Miller, T.P., 1973, Bedrock geologic map of Bettles and southern part of Wiseman quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-492, scale 1:250,000. Enumerated_Domain: Enumerated_Domain_Value: BT003 Enumerated_Domain_Value_Definition: Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew, Nora, in prep., Reconnaissance geologic map and digital data for the Yukon-Koyukuk basin, Alaska: U.S. Geological Survey Scientific Investigations Series Map SIM-2909, scale 1:500,000. Enumerated_Domain: Enumerated_Domain_Value: BT005 Enumerated_Domain_Value_Definition: Till, A.B., Dumoulin, J.A., Harris, A.G., Moore, T.E., Bleick, Heather, and Siwiec, Benjamin, in press, Bedrock geologic map of the southern Brooks Range, Alaska, and accompanying conodont data: U.S. Geological Survey Scientific Investigations Map SIM-XXXX, scale 1:500,000. Enumerated_Domain: Enumerated_Domain_Value: BV004 Enumerated_Domain_Value_Definition: Wilson/Hults edits 8/22/2007 Enumerated_Domain: Enumerated_Domain_Value: BV006 Enumerated_Domain_Value_Definition: Till, A.B., Dumoulin, J.A., Harris, A.G., Moore, T.E., Bleick, Heather, and Siwiec, Benjamin, in press, Bedrock geologic map of the southern Brooks Range, Alaska, and accompanying conodont data: U.S. Geological Survey Scientific Investigations Map SIM-XXXX, scale 1:500,000. Enumerated_Domain: Enumerated_Domain_Value: CH004 Enumerated_Domain_Value_Definition: Till, A.B., Dumoulin, J.A., Harris, A.G., Moore, T.E., Bleick, Heather, and Siwiec, Benjamin, in press, Bedrock geologic map of the southern Brooks Range, Alaska, and accompanying conodont data: U.S. Geological Survey Scientific Investigations Map SIM-XXXX, scale 1:500,000. Enumerated_Domain: Enumerated_Domain_Value: CS002 Enumerated_Domain_Value_Definition: Brosge, W.P., and Reiser, H.N., 2000, Geology of the Christian quadrangle, Alaska: U.S. Geological Survey Open-File Report 00-192, scale 1:250,000. Enumerated_Domain: Enumerated_Domain_Value: CS003 Enumerated_Domain_Value_Definition: Till, A.B., Dumoulin, J.A., Phillips, J.D., Stanley, R.G., and Crews, Jesse, in prep., Generalized bedrock geologic map, Yukon flats region, east-central Alaska: U.S. Geological Survey Scientific Investigations Map SIM-XXXX, pamphlet, 1 plate, scale 1:500,000. Enumerated_Domain: Enumerated_Domain_Value: CS004 Enumerated_Domain_Value_Definition: Till, A.B., Dumoulin, J.A., Harris, A.G., Moore, T.E., Bleick, Heather, and Siwiec, Benjamin, in press, Bedrock geologic map of the southern Brooks Range, Alaska, and accompanying conodont data: U.S. Geological Survey Scientific Investigations Map SIM-XXXX, scale 1:500,000. Enumerated_Domain: Enumerated_Domain_Value: HU002 Enumerated_Domain_Value_Definition: Patton, W.W., Jr., and Miller, T.P., 1966, Regional geologic map of the Hughes quadrangle, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Series Map I-459, scale 1:250,000. Enumerated_Domain: Enumerated_Domain_Value: HU003 Enumerated_Domain_Value_Definition: Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew, Nora, in prep., Reconnaissance geologic map and digital data for the Yukon-Koyukuk basin, Alaska: U.S. Geological Survey Scientific Investigations Series Map SIM-2909, scale 1:500,000. Enumerated_Domain: Enumerated_Domain_Value: HU004 Enumerated_Domain_Value_Definition: Till, A.B., Dumoulin, J.A., Harris, A.G., Moore, T.E., Bleick, Heather, and Siwiec, Benjamin, in press, Bedrock geologic map of the southern Brooks Range, Alaska, and accompanying conodont data: U.S. Geological Survey Scientific Investigations Map SIM-XXXX, scale 1:500,000. Enumerated_Domain: Enumerated_Domain_Value: SE003 Enumerated_Domain_Value_Definition: Karl, S.M., Dumoulin, J.A., Ellersieck, Inyo, Harris, A.G., and Schmidt, J.M., 1989, Preliminary geologic map of the Baird Mountains and part of the Selawik quadrangles, Alaska: U.S. Geological Survey Open-File Report 89-551, 65p., 1 sheet, scale 1:250,000. Enumerated_Domain: Enumerated_Domain_Value: SE005 Enumerated_Domain_Value_Definition: Till, A.G., Dumoulin, J.A., Harris, A.G., Moore, T.E., Bleick, Heather, and Siwiec, Benjamin, in press, Bedrock geologic map of the southern Brooks Range, Alaska, and accompanying conodont data: U.S. Geological Survey Scientific Investigations Map SIM-XXXX, scale 1:500,000. Enumerated_Domain: Enumerated_Domain_Value: SH002 Enumerated_Domain_Value_Definition: Patton, W.W., Jr., Miller, T.P., and Tailleur, I.L., 1968, Regional geologic map of the Shungnak and southern part of the Ambler River quadrangles, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-554, scale 1:250,000. Enumerated_Domain: Enumerated_Domain_Value: SH004 Enumerated_Domain_Value_Definition: Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew, Nora, in prep., Reconnaissance geologic map and digital data for the Yukon-Koyukuk basin, Alaska: U.S. Geological Survey Scientific Investigations Series Map SIM-2909, scale 1:500,000. Enumerated_Domain: Enumerated_Domain_Value: SH005 Enumerated_Domain_Value_Definition: Till, A.B., Dumoulin, J.A., Harris, A.G., Moore, T.E., Bleick, Heather, and Siwiec, Benjamin, in press, Bedrock geologic map of the southern Brooks Range, Alaska, and accompanying conodont data: U.S. Geological Survey Scientific Investigations Map SIM-XXXX, scale 1:500,000. Enumerated_Domain: Enumerated_Domain_Value: SP003 Enumerated_Domain_Value_Definition: Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew, Nora, in prep., Reconniassance geologic map and digital data for the Yukon-Koyukuk basin, Alaska: U.S. Geological Survey Scientific Investigations Map SIM-2909, scale 1:500,000. Enumerated_Domain: Enumerated_Domain_Value: SP004 Enumerated_Domain_Value_Definition: Till, A.B., Dumoulin, J.A., Harris, A.G., Moore, T.E., Bleick, Heather, and Siwiec, Benjamin, in press, Bedrock geologic map of the southern Brooks Range, Alaska, and accompanying conodont data: U.S. Geological Survey Scientific Investigations Map SIM-XXXX, scale 1:500,000. Enumerated_Domain: Enumerated_Domain_Value: WI007 Enumerated_Domain_Value_Definition: Till, A.B., Dumoulin, J.A., Harris, A.G., Moore, T.E., Bleick, Heather, and Siwiec, Benjamin, in press, Bedrock geologic map of the southern Brooks Range, Alaska, and accompanying conodont data: U.S. Geological Survey Scientific Investigations Map SIM-XXXX, scale 1:500,000. Detailed_Description: Entity_Type: Entity_Type_Label: arcs Entity_Type_Definition: Characteristics of the arc features in the geology coverages are coded in the arc attribute table. Table .aat includes the following items: ARC-CODE, ARC-PARA1, and SOURCE. For explanation of SOURCE, see attribute definitions for polygons. 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 discontinuously from 1 to 99. Values match one-for-one with geologic features, such as stratigraphic boundary, fault, etc. Some ARC-CODE features have additional modifiers in item ARC-PARA1. Attribute_Definition_Source: this data set 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, queried Enumerated_Domain: Enumerated_Domain_Value: 4 Enumerated_Domain_Value_Definition: Normal fault, location certain; if ARC-PARA1 = 1, then upthrown side is on right from origin Enumerated_Domain: Enumerated_Domain_Value: 5 Enumerated_Domain_Value_Definition: Normal fault, location approximate, if ARC-PARA1 = 1, then upthrown side is on right from origin Enumerated_Domain: Enumerated_Domain_Value: 7 Enumerated_Domain_Value_Definition: Shoreline or riverbank Enumerated_Domain: Enumerated_Domain_Value: 9 Enumerated_Domain_Value_Definition: Boundary or altered zone or hornfels 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: 30 Enumerated_Domain_Value_Definition: Fault, sense of displacement unknown, location certain Enumerated_Domain: Enumerated_Domain_Value: 31 Enumerated_Domain_Value_Definition: Fault, sense of displacement unknown, location approximate Enumerated_Domain: Enumerated_Domain_Value: 32 Enumerated_Domain_Value_Definition: Fault, sense of displacement unknown, location inferred or queried Enumerated_Domain: Enumerated_Domain_Value: 52 Enumerated_Domain_Value_Definition: Normal fault, concealed; if ARC-PARA1 = 1, then upthrown side is on right from origin Enumerated_Domain: Enumerated_Domain_Value: 53 Enumerated_Domain_Value_Definition: Thrust fault, concealed; teeth on right from origin Enumerated_Domain: Enumerated_Domain_Value: 57 Enumerated_Domain_Value_Definition: Concealed right lateral fault Enumerated_Domain: Enumerated_Domain_Value: 60 Enumerated_Domain_Value_Definition: Concealed fault, sense of displacement unknown Enumerated_Domain: Enumerated_Domain_Value: 87 Enumerated_Domain_Value_Definition: Right lateral fault, location certain Enumerated_Domain: Enumerated_Domain_Value: 88 Enumerated_Domain_Value_Definition: Right lateral fault, location approximate Enumerated_Domain: Enumerated_Domain_Value: 99 Enumerated_Domain_Value_Definition: Bounding line of coverage Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: MS 902 Box 25286 Denver Federal Center City: Lakewood State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS Resource_Description: Open-File Report 2008-XXXX Distribution_Liability: This world-wide web publication was prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Although all data and software published on this web-site have 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 and (or) the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data, software, or related materials. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE File_Decompression_Technique: zip files Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs/usgs.gov/of/2008/XXXX Fees: There is no cost for the download of these digital files Metadata_Reference_Information: Metadata_Date: 20080303 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Nora B. Shew Contact_Address: Address_Type: mailing and physical address Address: 4200 University Drive City: Anchorage State_or_Province: AK Postal_Code: 99508 Country: USA Contact_Voice_Telephone: 907-786-7445 Contact_Electronic_Mail_Address: nshew@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998