Identification_Information: Citation: Citation_Information: Originator: Wilson, Frederic H. Originator: Hults, Chad P. Originator: Mohadjer, Solmaz Originator: Coonrad, Warren L. Originator: Labay, Keith A. Originator: Shew, Nora Publication_Date: 2008 Title: Preliminary integrated geologic map databases for the United States: Digital data for the reconnaissance geologic map for the Kuskokwim Bay region of southwest Alaska Edition: ver. 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: OFR 2008-1001 Online_Linkage: http://pubs.usgs.gov/of/2008/1001 Larger_Work_Citation: Citation_Information: Originator: Wilson, Frederic H. Originator: Hults, Chad P. Originator: Mohadjer, Solmaz Originator: Coonrad, Warren L. Publication_Date: Unknown Title: Reconnaissance geologic map for the Kuskokwim Bay region of southwest Alaska Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 2008-1001 Description: Abstract: The area of this data set is a collage of loosely defined tectonostratigraphic terranes of widely varying age. The rocks of the area range from Proterozoic age metamorphic rocks of the Kanektok metamorphic complex (Kilbuck terrane) to Quaternary age mafic volcanic rocks of Nunivak Island. The map area encompasses much of the type area of the Togiak-Tikchik Complex. The geologic maps used to construct this compilation are for the most part, reconnaissance studies done in the time period from the 1950's to the 1990's. Pioneering work in the map area by J.M. Hoare and W.L. Coonrad forms the basis for much of this map, either directly or as the stepping off point for later studies compiled here. 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 Geologic data in this series has been compiled from a wide variety of sources, published and unpublished, ranging from state and regional geologic maps to large- scale field mapping.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: -174.0 East_Bounding_Coordinate: -158.0 North_Bounding_Coordinate: 61.0 South_Bounding_Coordinate: 56.4 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: geology Theme_Keyword: bedrock Place: Place_Keyword_Thesaurus: Geographic names information system (GNIS) Place_Keyword: Alaska Place_Keyword: soutwest Place_Keyword: Saint Matthew Place_Keyword: Pribilof Islands Place_Keyword: Nunivak Island Place_Keyword: Cape Mendenhall Place_Keyword: Baird Inlet Place_Keyword: Kuskokwim Bay Place_Keyword: Bethel Place_Keyword: Goodnews Bay Place_Keyword: Hagemeister Island Place_Keyword: Nushagak Bay 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: 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 Browse_Graphic: Browse_Graphic_File_Name: ???? Browse_Graphic_File_Description: ???? Browse_Graphic_File_Type: ???? Data_Set_Credit: This data set was prepared by Frederic H. Wilson (USGS), Chad P. Hults (USGS), Solmaz Mohadjer (contractor), Keith A. Labay (contractor), and Nora Shew (USGS) 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, unpublished mapping, and air photo interpretation. The dates of the mapping range from the 1950's to the 1990's. Vector features were digitized on a large digitizing tablet or on screen. 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 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, dikes, etc.) Completeness_Report: The complete data set consists of 10 separate GIS coverages. There is also an associated relational database of geologic units. Each coverage has the extent of a 1:250,000 scale quadrangle. A graphic representation of the database and a report with 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, although some sources were from 1:250,000 scale mapping. Lineage: Process_Step: Process_Description: Linework 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, .e00, and also converted to ArcView shape files. Process_Date: 2008 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: 907-786-7445 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: 2 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -171.0 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: 3 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -165.0 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: 0.00256 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: 4 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 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 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, NSACLASS, NSAMOD, QCLASS (not used), SOURCE, LABEL, MIN_AGE, and MAX_AGE. Entity_Type_Definition_Source: this data set 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 98 to 9420. NSACLASS is a numeric code for the geologic unit. This data set represents a generalized geologic map, thus it is possible that a geologic unit is made of multiple NSACLASS values. NSACLASS to LABEL is a many-to-one relationship. Each LABEL has a mininum (MIN_AGE) and maximum (MAX_AGE) 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 letter combinations "Tr", "Mz", and "Pz" are substituted for the standard age symbols for "Triassic", "Mesozoic", and "Paleozoic." Attribute_Definition_Source: This data set Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 98 Enumerated_Domain_Value_Definition: un - unmapped area Enumerated_Domain: Enumerated_Domain_Value: 100 Enumerated_Domain_Value_Definition: Qs - Surficial deposits, undivided (Quaternary) Enumerated_Domain: Enumerated_Domain_Value: 101 Enumerated_Domain_Value_Definition: ice Enumerated_Domain: Enumerated_Domain_Value: 102 Enumerated_Domain_Value_Definition: water Enumerated_Domain: Enumerated_Domain_Value: 103 Enumerated_Domain_Value_Definition: Qtf - Tidal flat and active estuarine deposits (Holocene) Enumerated_Domain: Enumerated_Domain_Value: 105 Enumerated_Domain_Value_Definition: Qa - Alluvial deposits (Quaternary) Enumerated_Domain: Enumerated_Domain_Value: 113 Enumerated_Domain_Value_Definition: Qrs - Reworked silt (Quaternary) Enumerated_Domain: Enumerated_Domain_Value: 115 Enumerated_Domain_Value_Definition: Qb - Beach deposits (Quaternary) Enumerated_Domain: Enumerated_Domain_Value: 116 Enumerated_Domain_Value_Definition: Qes - Estuarine deposits (Quaternary) Enumerated_Domain: Enumerated_Domain_Value: 117 Enumerated_Domain_Value_Definition: Qmt - Marine terraces (Quaternary) Enumerated_Domain: Enumerated_Domain_Value: 119 Enumerated_Domain_Value_Definition: Qed - Eolian deposits (Quaternary) Enumerated_Domain: Enumerated_Domain_Value: 120 Enumerated_Domain_Value_Definition: Qed - Eolian deposits (Quaternary) Enumerated_Domain: Enumerated_Domain_Value: 121 Enumerated_Domain_Value_Definition: Qsd - Silt deposits (Quaterary) Enumerated_Domain: Enumerated_Domain_Value: 125 Enumerated_Domain_Value_Definition: Qg - Glacial deposits, undivided (Quaternary) Enumerated_Domain: Enumerated_Domain_Value: 135 Enumerated_Domain_Value_Definition: Qgm - Glacial moraine (Quaternary) Enumerated_Domain: Enumerated_Domain_Value: 140 Enumerated_Domain_Value_Definition: Qgo - Outwash deposits (Quaternary) Enumerated_Domain: Enumerated_Domain_Value: 282 Enumerated_Domain_Value_Definition: QTs - Semiconsolidated marine beach deposits (Quaternary, Pleistocene or Tertiary) Enumerated_Domain: Enumerated_Domain_Value: 310 Enumerated_Domain_Value_Definition: Qpd - Pyroclastic rocks (Quaternary) Enumerated_Domain: Enumerated_Domain_Value: 317 Enumerated_Domain_Value_Definition: Qvs - Volcaniclastic sediment (Quaternary) Enumerated_Domain: Enumerated_Domain_Value: 320 Enumerated_Domain_Value_Definition: Qcs - Alkalic basalt of Karon Lake (Quaternary) Enumerated_Domain: Enumerated_Domain_Value: 330 Enumerated_Domain_Value_Definition: Qvb - Basalt flows, undivided (Quaternary, Pleistocene) Enumerated_Domain: Enumerated_Domain_Value: 350 Enumerated_Domain_Value_Definition: Qvbm - Basalt flows (Quaternary, Matuyama polarity epoch) Enumerated_Domain: Enumerated_Domain_Value: 450 Enumerated_Domain_Value_Definition: QTv - Volcanic rocks, undivided (Quaternary, Pleistocene or Tertiary, Pliocene) Enumerated_Domain: Enumerated_Domain_Value: 466 Enumerated_Domain_Value_Definition: QTab - Older alkalic basalt of Karon Lake (Quaternary, Pleistocene and Tertiary, Pliocene) Enumerated_Domain: Enumerated_Domain_Value: 1023 Enumerated_Domain_Value_Definition: Talb - Alkalic basalt of Ahzwiryuk Bluff (Tertiary, Pliocene) Enumerated_Domain: Enumerated_Domain_Value: 1024 Enumerated_Domain_Value_Definition: Ttb - Tholeiitic basalt of Binakslit Bluff (Tertiary, Pliocene) Enumerated_Domain: Enumerated_Domain_Value: 1053 Enumerated_Domain_Value_Definition: Tfi - Felsic intrusive rocks (Tertiary, Miocene?) Enumerated_Domain: Enumerated_Domain_Value: 1110 Enumerated_Domain_Value_Definition: Tnr - Nukluk Volcanic Field, rhyolite (Tertiary, Eocene) Enumerated_Domain: Enumerated_Domain_Value: 1111 Enumerated_Domain_Value_Definition: Tnba - Nukluk Volcanic Field, basalt and andesite (Tertiary, Eocene) Enumerated_Domain: Enumerated_Domain_Value: 1120 Enumerated_Domain_Value_Definition: Tvep - Rhyolite and dacite tuff (Tertiary) Enumerated_Domain: Enumerated_Domain_Value: 1301 Enumerated_Domain_Value_Definition: Tad - Aplite on Saint George Island (Tertiary, Eocene) Enumerated_Domain: Enumerated_Domain_Value: 1603 Enumerated_Domain_Value_Definition: TKr - Rhyolite and dacite flows, tuff, dikes, and sills (Early Tertiary and (or) Late Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 1604 Enumerated_Domain_Value_Definition: TKr - Rhyolite and dacite flows, tuff, dikes, and sills (Early Tertiary and (or) Late Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 1605 Enumerated_Domain_Value_Definition: TKa - Eek and Swift Creek volcanic fields of Box and others (1993); andesite flows (Early Tertiary and (or) Late Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 1640 Enumerated_Domain_Value_Definition: TMzp - Peridotite on Saint George Island (Tertiary or older) Enumerated_Domain: Enumerated_Domain_Value: 1655 Enumerated_Domain_Value_Definition: TKg - Granitic rocks, undivided (Tertiary and (or) Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 1656 Enumerated_Domain_Value_Definition: TKgr - Granite (Tertiary and (or) Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 1657 Enumerated_Domain_Value_Definition: TKgs - Monzonite (Tertiary and (or) Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 1658 Enumerated_Domain_Value_Definition: TKqm - Quartz monzonite and quartz monzodiorite (Tertiary and (or) Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 1660 Enumerated_Domain_Value_Definition: TKgd - Granodiorite (Tertiary and (or) Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 1665 Enumerated_Domain_Value_Definition: TKqd - Monzodiorite and quartz diorite (Tertiary and (or) Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 1670 Enumerated_Domain_Value_Definition: TKm - Mafic intrusive rocks (Tertiary, Paleocene, and Cretaceous?) Enumerated_Domain: Enumerated_Domain_Value: 1960 Enumerated_Domain_Value_Definition: Ks - Summit Island Formation (Upper Cretaceous, Maastrichtian?) Enumerated_Domain: Enumerated_Domain_Value: 1970 Enumerated_Domain_Value_Definition: Kk - Kuskokwim Group, undivided (Cretaceous, Campanian? to Albian) Enumerated_Domain: Enumerated_Domain_Value: 1985 Enumerated_Domain_Value_Definition: Kkn - Kuskokwim Group, nearshore facies (Cretaceous, Turonian to Albian) Enumerated_Domain: Enumerated_Domain_Value: 2021 Enumerated_Domain_Value_Definition: Kys - Sandstone, shale, and conglomerate deltaic deposits (Upper Cretaceous?) Enumerated_Domain: Enumerated_Domain_Value: 2102 Enumerated_Domain_Value_Definition: Kcgs - Calcareous graywacke and siltstone of the Eek Mountains belt of Hoare and Coonrad (1983) (Lower Cretaceous, Valanginian) Enumerated_Domain: Enumerated_Domain_Value: 2105 Enumerated_Domain_Value_Definition: Kygv - Volcanic graywacke and argillite (Cretaceous?) Enumerated_Domain: Enumerated_Domain_Value: 2125 Enumerated_Domain_Value_Definition: Kgbr - Graywacke of Buchia Ridge (Lower Cretaceous, Valanginian and Hauterivian) Enumerated_Domain: Enumerated_Domain_Value: 2150 Enumerated_Domain_Value_Definition: Klg - Limy grit and limestone of the Ungalikthluk belt of Hoare and Coonrad (1983) (Lower Cretaceous, Valanginian) Enumerated_Domain: Enumerated_Domain_Value: 2180 Enumerated_Domain_Value_Definition: Kvm - Volcanic and sedimentary rocks of the Mount Oratia belt of Hoare and Coonrad (1983) (Lower Cretaceous, Valanginian) Enumerated_Domain: Enumerated_Domain_Value: 2210 Enumerated_Domain_Value_Definition: Kv - Volcanic rocks (Late Cretaceous, Maastrichtian and Campanian) Enumerated_Domain: Enumerated_Domain_Value: 2260 Enumerated_Domain_Value_Definition: Kv - Volcanic rocks (Late Cretaceous, Maastrichtian and Campanian) Enumerated_Domain: Enumerated_Domain_Value: 2261 Enumerated_Domain_Value_Definition: Kv - Volcanic rocks (Late Cretaceous, Maastrichtian and Campanian) Enumerated_Domain: Enumerated_Domain_Value: 2265 Enumerated_Domain_Value_Definition: Kpd - Intermediate and silicic pyroclastic rocks (Late Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 2510 Enumerated_Domain_Value_Definition: Ksp - Serpentinite (Late Cretaceous?) Enumerated_Domain: Enumerated_Domain_Value: 2530 Enumerated_Domain_Value_Definition: Kg - Granodiorite and granite (Early Cretaceous) Enumerated_Domain: Enumerated_Domain_Value: 2832 Enumerated_Domain_Value_Definition: KJc - Argillite and tuffaceous chert (Lower Cretaceous and (or) Upper Jurassic) Enumerated_Domain: Enumerated_Domain_Value: 2870 Enumerated_Domain_Value_Definition: KJba - Basaltic and andesitic lava flows (Early Cretaceous and (or) Late Jurassic) Enumerated_Domain: Enumerated_Domain_Value: 2872 Enumerated_Domain_Value_Definition: KTrvs - Volcanic and sedimentary rocks (Lower Cretaceous to Upper Triassic?) Enumerated_Domain: Enumerated_Domain_Value: 2885 Enumerated_Domain_Value_Definition: TJih - Hypabyssal felsic intrusive rocks (earliest Tertiary? to Late Jurassic?) Enumerated_Domain: Enumerated_Domain_Value: 2890 Enumerated_Domain_Value_Definition: KJb - Pillow basalt (Lower Cretaceous and (or) Upper Jurassic) Enumerated_Domain: Enumerated_Domain_Value: 2900 Enumerated_Domain_Value_Definition: TJis - Slate Creek pluton of Box and others (1993) (earliest Tertiary? to Late Jurassic?) Enumerated_Domain: Enumerated_Domain_Value: 3005 Enumerated_Domain_Value_Definition: Jvs - Marine volcaniclastic sandstone, conglomerate, and argillite (Jurassic) Enumerated_Domain: Enumerated_Domain_Value: 3120 Enumerated_Domain_Value_Definition: Jvc - Volcaniclastic conglomerate, sandstone, and shale (Upper and Middle Jurassic) Enumerated_Domain: Enumerated_Domain_Value: 3130 Enumerated_Domain_Value_Definition: Ja - Marine arkosic sandstone and argillite (Jurassic) Enumerated_Domain: Enumerated_Domain_Value: 3150 Enumerated_Domain_Value_Definition: Jkw - Graywacke of Kulukak Bay (lower Upper to Middle Jurassic) Enumerated_Domain: Enumerated_Domain_Value: 3151 Enumerated_Domain_Value_Definition: Jmm - Turbidites of Metervik Bay of Box (1985a) (Upper and Middle Jurassic) Enumerated_Domain: Enumerated_Domain_Value: 3152 Enumerated_Domain_Value_Definition: Jvt - Volcaniclastic turbidites of Togiak Bay of Box (1985a) (Middle Jurassic) Enumerated_Domain: Enumerated_Domain_Value: 3230 Enumerated_Domain_Value_Definition: Jln - Dismembered volcaniclastic turbidites (Lower Jurassic?) Enumerated_Domain: Enumerated_Domain_Value: 3254 Enumerated_Domain_Value_Definition: Jlvs - Volcanic and sedimentary rocks (Lower Jurassic) Enumerated_Domain: Enumerated_Domain_Value: 3255 Enumerated_Domain_Value_Definition: JTrcv - Coarse volcaniclastic rocks (Lower Jurassic to Upper Triassic) Enumerated_Domain: Enumerated_Domain_Value: 3260 Enumerated_Domain_Value_Definition: JTrp - Phyllite and chert (Lower Jurassic and Upper Triassic?) Enumerated_Domain: Enumerated_Domain_Value: 3310 Enumerated_Domain_Value_Definition: Jlt - Laminated tuff and associated rocks of Box (1985a) (Jurassic) Enumerated_Domain: Enumerated_Domain_Value: 3380 Enumerated_Domain_Value_Definition: JTrot - Trondhjemite (Lower Jurassic to Middle Triassic) Enumerated_Domain: Enumerated_Domain_Value: 3406 Enumerated_Domain_Value_Definition: Jgb - Gabbroic rocks (Middle and Early Jurassic) Enumerated_Domain: Enumerated_Domain_Value: 3450 Enumerated_Domain_Value_Definition: Jab - Andesite and basalt (Middle Jurassic) Enumerated_Domain: Enumerated_Domain_Value: 3451 Enumerated_Domain_Value_Definition: Jmv - Interbedded volcanic and sedimentary rocks (Middle Jurassic) Enumerated_Domain: Enumerated_Domain_Value: 3495 Enumerated_Domain_Value_Definition: Jum - Ultramafic rocks (Jurassic?) Enumerated_Domain: Enumerated_Domain_Value: 3510 Enumerated_Domain_Value_Definition: Jlgd - Hagemeister pluton of Box (1985a) (Early Jurassic?) Enumerated_Domain: Enumerated_Domain_Value: 3891 Enumerated_Domain_Value_Definition: Trob - Pillow basalt (Triassic) Enumerated_Domain: Enumerated_Domain_Value: 3892 Enumerated_Domain_Value_Definition: JTrot - Trondhjemite (Lower Jurassic to Middle Triassic) Enumerated_Domain: Enumerated_Domain_Value: 3893 Enumerated_Domain_Value_Definition: Trod - Diabasic intrusive rocks (Triassic) Enumerated_Domain: Enumerated_Domain_Value: 3894 Enumerated_Domain_Value_Definition: Trog - Pyroxene gabbro (Triassic) Enumerated_Domain: Enumerated_Domain_Value: 3895 Enumerated_Domain_Value_Definition: Jum - Ultramafic rocks (Jurassic?) Enumerated_Domain: Enumerated_Domain_Value: 3950 Enumerated_Domain_Value_Definition: TrPcs - Calcareous schist (Triassic? to Permian?) Enumerated_Domain: Enumerated_Domain_Value: 3990 Enumerated_Domain_Value_Definition: TrPmb - Metabasaltic schist (Triassic? to Permian?) Enumerated_Domain: Enumerated_Domain_Value: 3991 Enumerated_Domain_Value_Definition: TrPvs - Volcaniclastic glaucophane-hornblende-epidote schist (Triassic? to Permian?) Enumerated_Domain: Enumerated_Domain_Value: 4035 Enumerated_Domain_Value_Definition: Trvs - Volcanic and sedimentary rocks (Upper Triassic) Enumerated_Domain: Enumerated_Domain_Value: 4215 Enumerated_Domain_Value_Definition: Trv - Basalt and chert (Upper Triassic) Enumerated_Domain: Enumerated_Domain_Value: 4710 Enumerated_Domain_Value_Definition: MzPzt - Togiak-Tikchik Complex, undivided (Lower Cretaceous to Lower Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 4880 Enumerated_Domain_Value_Definition: TJik - Little Kasigluk River pluton of Box and others (1993) (earliest Tertiary? to late Jurassic?) Enumerated_Domain: Enumerated_Domain_Value: 4950 Enumerated_Domain_Value_Definition: Mzm - Melange (Mesozoic) Enumerated_Domain: Enumerated_Domain_Value: 5026 Enumerated_Domain_Value_Definition: MzPzc - Chert and argillite (Mesozoic and (or) Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 5045 Enumerated_Domain_Value_Definition: MzPzv - Volcaniclastic sandstone and argillite (Mesozoic and (or) Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 5050 Enumerated_Domain_Value_Definition: MzPzs - Arkosic sandstone and slate (Mesozoic and (or) Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 5060 Enumerated_Domain_Value_Definition: Pcs - Clastic rocks (Permian?) Enumerated_Domain: Enumerated_Domain_Value: 5090 Enumerated_Domain_Value_Definition: MzPza - Argillaceous melange (Mesozoic to Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 5217 Enumerated_Domain_Value_Definition: MzPzp - Chloritic phyllite (Mesozoic and (or) Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 5225 Enumerated_Domain_Value_Definition: MzPzm - Metachert and phyllitic metachert (Mesozoic and (or) Paleozoic) Enumerated_Domain: Enumerated_Domain_Value: 5239 Enumerated_Domain_Value_Definition: Jgs - Green amphibole-bearing schist (Late Jurassic) Enumerated_Domain: Enumerated_Domain_Value: 5730 Enumerated_Domain_Value_Definition: Pls - Limestone (Permian) Enumerated_Domain: Enumerated_Domain_Value: 5746 Enumerated_Domain_Value_Definition: Pvs - Volcaniclastic sedimentary rocks (Permian) Enumerated_Domain: Enumerated_Domain_Value: 5810 Enumerated_Domain_Value_Definition: Pv - Volcanic rocks (Permian) Enumerated_Domain: Enumerated_Domain_Value: 6412 Enumerated_Domain_Value_Definition: MDv - Greenstone and schist (Lower Mississippian or Upper Devonian) Enumerated_Domain: Enumerated_Domain_Value: 6580 Enumerated_Domain_Value_Definition: MDm - Marble and metabasaltic dikes (Lower Mississippian and (or) Upper Devonian) Enumerated_Domain: Enumerated_Domain_Value: 6995 Enumerated_Domain_Value_Definition: DOl - Thin-bedded limestone (Devonian to Ordovician) Enumerated_Domain: Enumerated_Domain_Value: 8610 Enumerated_Domain_Value_Definition: Zkm - Marble (Paleoproterozoic) Enumerated_Domain: Enumerated_Domain_Value: 9420 Enumerated_Domain_Value_Definition: Zk - Kanektok metamorphic complex, undivided (Paleoproterozoic) 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: ALT - hydrothermal alteration HFS - contact metamorphism, hornfels Q - queried unit Attribute: Attribute_Label: SOURCE Attribute_Definition: SOURCE is a character (6 8 C) item found in both the polygon and arc attribute tables. The values are abbreviated codes representing the original source reference for the polygon or arc feature. The format for SOURCE is XX###, where 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: BH002 Enumerated_Domain_Value_Definition: Box, S.E., Moll-Stalcup, E.J., Frost, T.P., and Murphy, J.M., 1993, Preliminary geologic map of the Bethel and southern Russian Mission quadrangles, southwestern Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2226-A, scale 1:250,000. Enumerated_Domain: Enumerated_Domain_Value: BH003 Enumerated_Domain_Value_Definition: Hoare, J.M., and Coonrad, W.L., 1978, Geologic map of the Goodnews and Hagemeister Island quadrangles region, southwestern Alaska: U.S. Geological Survey Open-File Report 78-9-B, scale 1:250,000, 2 sheets. Enumerated_Domain: Enumerated_Domain_Value: BH004 Enumerated_Domain_Value_Definition: Hoare, J.M., and Coonrad, W.L., 1959, Geology of the Bethel quadrangle, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-285, scale 1:250,000. Enumerated_Domain: Enumerated_Domain_Value: BH007 Enumerated_Domain_Value_Definition: Wilson, F.H., and Hults, Chad, 2006, Edits to match Box and others (1993) Bethel map and Hoare and Coonrad (1978) Goodnews Bay map. Enumerated_Domain: Enumerated_Domain_Value: BI002 Enumerated_Domain_Value_Definition: Coonrad, W.L., 1957, Geologic reconnaissance in the Yukon-Kuskokwim Delta region, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Series Map I-233, scale 1:500,000. Enumerated_Domain: Enumerated_Domain_Value: BI003 Enumerated_Domain_Value_Definition: Wilson, F.H., 2007, Reconnaissance mapping of surficial geology, Baird Inlet quadrangle. Enumerated_Domain: Enumerated_Domain_Value: CM003 Enumerated_Domain_Value_Definition: Hoare, J.M., Condon, W.H., Cox, Allan, and Dalrymple, G.B., 1968, Geology, paleomagnetism, and potassium-argon ages of basalts from Nunivak Island, Alaska in Coats, R.R., Hay, R.L., and Anderson, C.A., eds., Studies in Volcanology-- A memoir in honor of Howell Williams: Geological Society of America Memoir 116, p. 377-413, 1 plate, scale 1:250,000. Enumerated_Domain: Enumerated_Domain_Value: GO002 Enumerated_Domain_Value_Definition: Hoare, J.M., and Coonrad, W.L., 1978, Geologic map of the Goodnews and Hagemeister Island quadrangles region, southwestern Alaska: U.S. Geological Survey Open-File Report 78-9-B, scale 1:250,000, 2 sheets. Enumerated_Domain: Enumerated_Domain_Value: GO005 Enumerated_Domain_Value_Definition: Box, S.E., 1985, Mesozoic tectonic evolution of the northern Bristol Bay region, southwestern Alaska: Santa Cruz, University of California, Ph.D. dissertation, 163p., 7 tables, 21 figures, 2 plates. Enumerated_Domain: Enumerated_Domain_Value: GO006 Enumerated_Domain_Value_Definition: Wilson, F.H., and Hults, Chad, 2006, Edits to integrate maps. Enumerated_Domain: Enumerated_Domain_Value: GO007 Enumerated_Domain_Value_Definition: Hoare and Coonrad field maps, circa 1975. Enumerated_Domain: Enumerated_Domain_Value: GO008 Enumerated_Domain_Value_Definition: Hoare, J.M., and Coonrad, W.L., 1961, Geologic map of the Goodnews quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-339, scale 1:250,000. Enumerated_Domain: Enumerated_Domain_Value: HG002 Enumerated_Domain_Value_Definition: Hoare, J.M., and Coonrad, W.L., 1978, Geologic map of the Goodnews and Hagemeister Island quadrangles region, southwestern Alaska: U.S. Geological Survey Open-File Report 78-9-B, scale 1:250,000, 2 sheets. Enumerated_Domain: Enumerated_Domain_Value: HG003 Enumerated_Domain_Value_Definition: Box, S.E., 1985, Mesozoic tectonic evolution of the northern Bristol Bay region, southwestern Alaska: Santa Cruz, University of California, Ph.D. dissertation, 163 p., 7 tables, 21 figures, 2 plates. Enumerated_Domain: Enumerated_Domain_Value: HG005 Enumerated_Domain_Value_Definition: Hoare, J.M., and Coonrad, W.L., 1961, Geologic map of the Hagemeister Island quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-321, scale 1:250,000. Enumerated_Domain: Enumerated_Domain_Value: KB002 Enumerated_Domain_Value_Definition: Coonrad, W.L., 1957, Geologic reconnaissance in the Yukon-Kuskokwim Delta region, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Series Map I-223, scale 1:500,000. Enumerated_Domain: Enumerated_Domain_Value: KB003 Enumerated_Domain_Value_Definition: Wilson, F.H., 2007, Reconnaissance mapping of surficial geology, Kuskokwim Bay quadrangle. Enumerated_Domain: Enumerated_Domain_Value: NG002 Enumerated_Domain_Value_Definition: Hoare, J.M., and Coonrad, W.L., 1978, Geologic map of the Goodnews and Hagemeister Island quadrangles region, southwestern Alaska: U.S. Geological Survey Open-File Report 78-9-B, scale 1:250,000, 2 sheets. (northwestern part of quadrangle only) Enumerated_Domain: Enumerated_Domain_Value: NG006 Enumerated_Domain_Value_Definition: Box, S.E., 1985, Mesozoic tectonic evolution of the northern Bristol Bay region, southwestern Alaska: Santa Cruz, University of California, Ph.D. dissertation, 163 p., 7 tables, 21 figures, 2 plates. Enumerated_Domain: Enumerated_Domain_Value: NG007 Enumerated_Domain_Value_Definition: Wilson, F.H., Hults, Chad, and Coonrad, W.L., 2006, Edits and field compilation sheets. Enumerated_Domain: Enumerated_Domain_Value: NI002 Enumerated_Domain_Value_Definition: Coonrad, W.L., 1957, Geologic reconnaissance in the Yukon-Kuskokwim Delta region, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Series Map I-223, scale 1:500,000. Enumerated_Domain: Enumerated_Domain_Value: NI003 Enumerated_Domain_Value_Definition: Hoare, J.M., Condon, W.H., Cox, Allan, and Dalrymple, G.B., 1968, Geology, paleomagnetism, and potassium-argon ages of basalts from Nunivak Island, Alaska, in Coats, R.R., Hay, R.L., and Anderson, C.A., eds., Studies in Volcanology-- A memoir in honor of Howel Williams: Geological Society of America Memoir 116, p. 377-413, 1 plate, scale 1:250,000. Enumerated_Domain: Enumerated_Domain_Value: NI004 Enumerated_Domain_Value_Definition: Wilson, F.H., 2007, Reconnaissance mapping of surficial geology, Nunivak Island quadrangle. Enumerated_Domain: Enumerated_Domain_Value: PI002 Enumerated_Domain_Value_Definition: Barth, T.F.W., 1956, Geology and petrology of the Pribilof Islands, Alaska: U.S. Geological Survey Bulletin 1028-F, 160 p., scale 1:63,360. Enumerated_Domain: Enumerated_Domain_Value: ST002 Enumerated_Domain_Value_Definition: Patton, W.W., Jr., Miller, T.P., Berg, H.C., Gryc, George, Hoare, J.M., and Ovenshine, A.T., 1975, Reconnaissance geologic map of St. Matthew Island, Bering Sea, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-642, scale 1:125,000. 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 0 to 99. Values match one-for-one with geologic features (such as stratigraphic boundary, fault, etc.). Some ARC-CODE values 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: 6 Enumerated_Domain_Value_Definition: Normal fault, location inferred or queried; 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: 8 Enumerated_Domain_Value_Definition: Internal contact or phase change; no symbol drawn Enumerated_Domain: Enumerated_Domain_Value: 9 Enumerated_Domain_Value_Definition: Boundary of altered zone or hornfels; no symbol drawn 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: 14 Enumerated_Domain_Value_Definition: Caldera or crater rim Enumerated_Domain: Enumerated_Domain_Value: 15 Enumerated_Domain_Value_Definition: Ice contact Enumerated_Domain: Enumerated_Domain_Value: 18 Enumerated_Domain_Value_Definition: Internal contact 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: 51 Enumerated_Domain_Value_Definition: Concealed contact Enumerated_Domain: Enumerated_Domain_Value: 52 Enumerated_Domain_Value_Definition: Concealed normal fault Enumerated_Domain: Enumerated_Domain_Value: 53 Enumerated_Domain_Value_Definition: Concealed thrust fault Enumerated_Domain: Enumerated_Domain_Value: 60 Enumerated_Domain_Value_Definition: Concealed fault, displacement uncertain Enumerated_Domain: Enumerated_Domain_Value: 90 Enumerated_Domain_Value_Definition: Left lateral fault, location certain Enumerated_Domain: Enumerated_Domain_Value: 91 Enumerated_Domain_Value_Definition: Left lateral fault, location approximate Enumerated_Domain: Enumerated_Domain_Value: 93 Enumerated_Domain_Value_Definition: Lineament 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: U.S.A. Contact_Voice_Telephone: 1-888-ASK-USGS Resource_Description: Open-File Report 2008-1001 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 of any agency thereof. 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/2008/1001 Fees: There is no cost for the download of these digital files Metadata_Reference_Information: Metadata_Date: 20070911 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: Alaska Postal_Code: 99508 Country: U.S.A. 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