Identification_Information: Citation: Citation_Information: Originator: Pinney, D.S. Publication_Date: 200105 Title: Engineering-Geologic Map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska Geospatial_Data_Presentation_Form: map, vector digital data Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2001-3D Publication_Information: Publication_Place: Fairbanks, AK, USA Publisher: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (DGGS) Other_Citation_Details: 1 sheet, scale 1:63,360 Online_Linkage: http://dx.doi.org/10.14509/2672 Description: Abstract: The Alaska Division of Geological & Geophysical Surveys (DGGS) has conducted 1:63,360-scale geologic mapping of the Eagle A-2 Quadrangle (270 square miles; equivalent to four 7.5-minute quadrangles). The area is part of the 100-year old Fortymile mining district and is located in eastern Alaska near the Alaska-Yukon border. This map illustrates potential near-surface sources of various geologic materials that may be useful for construction. Field observations indicate that each geologic unit (for example, stream alluvium) has a definite composition or range of composition. Therefore, the probable presence of materials is interpreted from the distribution of geologic units on the geologic map of this quadrangle. This map is generalized and is not intended to show exact locations of specific materials. Local variations are common, especially near unit boundaries. The map was derived electronically from the geologic map of the area using Geographic Information System (GIS) software. It is locally verified by ground observations during field visits. The results should be considered reconnaissance in nature. Purpose: This project, resulting map, geospatial data are intended to provide a geologic map and a geologic interpretation of the Fortymile mining district at 1:63,360 scale. Previous published 1:63,360 scale geologic maps of this area have been reconnaissance-level maps or only covered portions of the quadrangle. Mapping at 1:63,360 scale (or more detailed) is needed to identify critical geologic features that may relate to more regional structures or geologic units. These detailed observations are also critical to test or use in tectonic models. This map also provides a geologic base in which to interpret geochemical results from the concurrent DGGS rock sampling program. Supplemental_Information: The layers listed below are present as ArcGIS shape files. Attribute information for the following layers (entities) is included in this metadata file under the "Entity_and_Attribute_Information" section. Each layer is listed and described in detail under its own heading starting "Entity_Type_Label." Layers include: >fmmatgeo engineering-geologic units >fmpingos pingo locations Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1999 Ending_Date: 2001 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: none planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -142.00902346 East_Bounding_Coordinate: -141.49552824 North_Bounding_Coordinate: 64.25256429 South_Bounding_Coordinate: 63.9974188 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: Construction Materials Theme_Keyword: Engineering Theme_Keyword: Engineering Geology Theme_Keyword: Geologic Hazards Theme_Keyword: Geology Theme_Keyword: Mining Theme_Keyword: STATEMAP Project Place: Place_Keyword_Thesaurus: none Place_Keyword: Alaska, State of Place_Keyword: Fortymile Mining District Place_Keyword: Eagle Quadrangle Place_Keyword: Chicken Access_Constraints: This report, map, and/or dataset are available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below). Use_Constraints: Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. User specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Contact_Position: GIS Data Manager/Cartographer Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Contact_Voice_Telephone: (907) 451-5029 Contact_Voice_Telephone: (907) 451-5020 Contact_Facsimile_Telephone: (907) 451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Contact_Instructions: You may view our web site at http://www.dggs.alaska.gov for the latest information on available data. Please e-mail your questions and data requests when possible since our web site and e-mail address will remain current even if our phone number and mailing address change. Data_Set_Credit: This project is part of the Alaska Airborne Geophysical/Geological Mineral Inventory Program funded by the Alaska State Legislature and managed by State of Alaska, Department of Natural Resources (DNR), Division of Geological & Geophysical Surveys (DGGS). Partial funding for the geologic mapping was also provided by the U.S. Geological Survey, National Cooperative Geologic Mapping Program, under STATEMAP award number 00HQAG0071 under the NCGM STATEMAP program for FY2000. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. government. Native_Data_Set_Environment: Microsoft Windows XP SP2, ArcGIS 9.+, and any text editor. Cross_Reference: Citation_Information: Originator: Werdon, M.B. Originator: Newberry, R.J. Originator: Szumigala, D.J. Originator: Pinney, D.S. Publication_Date: 200105 Title: Geologic Map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska Geospatial_Data_Presentation_Form: map, vector digital data Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2001-3A Publication_Information: Publication_Place: Fairbanks, AK, USA Publisher: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (DGGS) Other_Citation_Details: 1 sheet, scale 1:63,360 Online_Linkage: http://dx.doi.org/10.14509/2669 Cross_Reference: Citation_Information: Originator: Werdon, M.B. Originator: Newberry, R.J. Originator: Szumigala, D.J. Publication_Date: 200105 Title: Geologic Map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska 2001 Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2001-3B Publication_Information: Publication_Place: Fairbanks, AK Publisher: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Other_Citation_Details: 1 sheet, scale 1:63,360 Online_Linkage: http://dx.doi.org/10.14509/2670 Cross_Reference: Citation_Information: Originator: Pinney, D.S. Publication_Date: 200105 Title: Surficial-geologic Map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska 2001 Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2001-3C Publication_Information: Publication_Place: Fairbanks, AK Publisher: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Other_Citation_Details: 1 sheet, scale 1:63,360 Online_Linkage: http://dx.doi.org/10.14509/2671 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Data for original geologic units were digitized from a mylar and paper geologic compilations. This compilation for the surficial-geologic information was done on a paper map of the USGS topographic base for each of the 1:63,360 scale USGS topographic bases included in the map area. Bedrock geologic information was compiled on stable mylar with abundant control points at 1:50,000 scale that was scanned and co-registered in ArcView GIS Version 3.1? to a 1:63,360-scale USGS topographic base. Geologic data included in the compilation are the field maps and notes from this project as well as data from other sources as noted in the "Sources Cited" section. The derivative engineering-geologic data, was derived directly from the resulting comprehensive geology data. Logical_Consistency_Report: Polygon topology present. Polygon topology present on appropriate data; others are line, point, or annotation data and do not require topologic relationships. Completeness_Report: This data set includes geospatial data about geologic units, pingo locations, geologic hazards, and potential construction materials resources. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Surficial mappers recorded observations on 1:50,000 scale (nominal) color-infrared aerial photographs and 1:63,360 scale topographic base maps. Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Value: 15 Horizontal_Positional_Accuracy_Explanation: Stations located using air photos and hand held GPS devices with location precision varying from +/-3 to 15 meters. This error results from items such as error in satellite positions, mathematical error introduced by the formulas used by the GPS unit for calculating position, and errors caused by narrow satellite alignments. Estimated position error is a value determined by the GPS manufacturer for the calculation and geometric error as a whole. "Selective availability," a deliberate degradation of GPS data managed by the U.S. government that induces an additional error of approximately 100 meters to a GPS location, was not in effect during this project's 2000 and 2001 field work. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Werdon, M.B. Originator: Newberry, R.J. Originator: Szumigala, D.J. Publication_Date: 2001 Title: Geologic map of the Eagle A-1 Quadrangle, Fortymile mining district, Alaska Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2001-3A Publication_Information: Publication_Place: Fairbanks, AK Publisher: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Online_Linkage: http://dx.doi.org/10.14509/2669 Type_of_Source_Media: paper, online, CD-ROM Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1999 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Werdon and others, 2001 Source_Contribution: See this publication cited in the Process Step section below Source_Information: Source_Citation: Citation_Information: Originator: Wagner, A.A. Publication_Date: 1957 Title: The use of the Unified Soil Classification System by the Bureau of Reclamation Geospatial_Data_Presentation_Form: report Series_Information: Series_Name: Proceedings, 4th International Conference on Soil Mechanics and Foundation Engineering Issue_Identification: Vol. I Publication_Information: Publication_Place: London, England Publisher: International Conference on Soil Mechanics and Foundation Engineering Other_Citation_Details: p. 125 Type_of_Source_Media: paper Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1957 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: Wagner, 1957 Source_Contribution: See this publication cited in the Process Step section below Process_Step: Process_Description: Process_Description: Engineering map compilation- Data from the comprehensive geologic map of the area (Werdon and others, 2001) was used as the basis for generating the derivative engineering-geologic map. An ArcInfo lookup table was made to assign geologic units (item UNIT) from the comprehensive map to appropriate engineering-geologic units (item MAT) based on the Unified Soil Classification System as described by Wagner (1957). This lookup table was applied to the ArcInfo polygon coverage containing the geologic units and a new engineering-geologic polygon coverage was generated using the "dissolve" command based on the new materials-unit item "MAT". ArcPlot was used to generate plot files of the resulting materials coverage using DGGS-standard symbology, and the Arc graphics files were converted into .eps files for export to Adobe Illustrator for final cartographic assembly. Source_Used_Citation_Abbreviation: Wagner, 1957 Source_Used_Citation_Abbreviation: Werdon and others, 2001 Process_Date: 2000 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -141.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Layer_Name: fmmatgeo Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000205 Ordinate_Resolution: 0.000205 Planar_Distance_Units: Meters Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 7 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -141.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Layer_Name: fmpingos Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000032 Ordinate_Resolution: 0.000032 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: D_Clarke_1866 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6,378,206.400000 Denominator_of_Flattening_Ratio: 294.978698 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Attribute_Layer_Name: fmmatgeo Entity_Type_Label: fmmatgeo.shp Entity_Type_Definition: Object type is vector, there are 997 rows associated with this entity, and the entity values refer to engineering-geologic units Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: MAT Attribute_Definition: engineering-geologic materials map units Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: LK Enumerated_Domain_Value_Definition: Lake Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: GS Enumerated_Domain_Value_Definition: Fluvial and glaciofluvial gravel, sand, and silt. Chiefly (estimated >80 percent) clean sand and gravel. Grain size, sorting and degree of stratification are variable. Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: GM Enumerated_Domain_Value_Definition: Poorly- to moderately well-sorted clay, silt, sand, gravel, and diamicton of colluvial, fluvial and glacial origins. Includes angular, unsorted talus debris and chaotically deformed colluvium derived from landslides. Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: SM Enumerated_Domain_Value_Definition: Silt deposited primarily by wind and reworked by fluvial and colluvial processes. May be organic rich. Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: OR Enumerated_Domain_Value_Definition: Organic-rich silt and peat in bogs, former stream channels, and lake basins. Commonly frozen and ice-rich due to the excellent insulating properties of peat. Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: BC Enumerated_Domain_Value_Definition: Medium-jointed, fine- to coarse-grained sedimentary carbonate rocks and their metamorphic equivalents. Includes limestone and marble. Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: BG Enumerated_Domain_Value_Definition: Coarse-jointed, coarse-grained igneous lithologies and their metamorphic equivalents. Chiefly granitic rocks. Includes coarse-grained gneiss. Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: BM Enumerated_Domain_Value_Definition: Medium-jointed, fine- to medium-grained quartzose sedimentary rocks and their metamorphic equivalents. Chiefly quartzite in this map area. Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: BV Enumerated_Domain_Value_Definition: Medium-jointed, fine-grained igneous rocks and their metamorphic equivalents. Chiefly metavolcanics and dikes. Enumerated_Domain_Value_Definition_Source: PIR 2001-3d, Description of Map Units Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: BO Enumerated_Domain_Value_Definition: Rocks of lithologies: (a) not listed in other materials classes, but which may be suited for use as construction materials or for other specialized purposes; and (b) mixed units composed of combinations of the above bedrock materials classes. Includes fine-grained gneiss and phyllite. Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: BU Enumerated_Domain_Value_Definition: Rocks of mixed lithology and/or very fine-grained sedimentary lithologies that are generally poorly suited for use as construction. Includes coal-bearing Tertiary sediments. Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Detailed_Description: Entity_Type: Entity_Attribute_Layer_Name: fmpingos Entity_Type_Label: fmpingos.shp Entity_Type_Definition: Object type is point, there are 2 rows associated with this entity, and the entity values refer to pingo locations Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute: Attribute_Label: TEMP Attribute_Definition: attribute describing the object pingo Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Unrepresentable_Domain: The description is not from any specific domain Attribute: Attribute_Label: UNIT Attribute_Definition: attribute describing the object pingo Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Unrepresentable_Domain: The description is not from any specific domain Attribute: Attribute_Label: SUNIT Attribute_Definition: attribute describing the object pingo Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Unrepresentable_Domain: The description is not from any specific domain Attribute: Attribute_Label: SURFBED Attribute_Definition: what portions of contacts are under surficial cover as opposed to exposed bedrock Attribute_Definition_Source: Alaska Division of Geological & Geophysical Surveys Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: S Enumerated_Domain_Value_Definition: Fluvial and glaciofluvial gravel, sand, and silt. Chiefly (estimated >80 percent) clean sand and gravel. Grain size, sorting and degree of stratification are variable. Enumerated_Domain_Value_Definition_Source: Alaska Division of Geological & Geophysical Surveys Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Contact_Position: Natural Resource Technician Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: 907-451-5020 Contact_TDD/TTY_Telephone: None available. Contact_Facsimile_Telephone: 907-451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Contact_Instructions: Please view our web site (http://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible. Resource_Description: Preliminary Interpretive Report 2001-3D Distribution_Liability: The State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products, any failure thereof, or otherwise, and in no event will the State of Alaska's liability to the requester or anyone else exceed the fee paid for the electronic service or product. Standard_Order_Process: Non-digital_Form: Current publication is available on paper. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Fees: Printed publication can be purchased for $13.00 (contact information below) plus shipping if mailed. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: PDF Format_Version_Number: 1.6 File_Decompression_Technique: No compression applied Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://dx.doi.org/10.14509/2672 Digital_Form: Digital_Transfer_Information: Format_Name: ArcGIS Shapefile Format_Version_Number: ESRI ArcGIS 9.x File_Decompression_Technique: No compression applied Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://dx.doi.org/10.14509/2672 Offline_Option: Offline_Media: CD-ROM Recording_Format: Joliet Fees: Digital files on CD-ROM are available for $10.00 (contact information below). No fees charged for downloaded files. Ordering_Instructions: Order by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). The DGGS web site (http://www.dggs.alaska.gov/) has a list of electronic data available and an order form that can be printed. Payment accepted: Cash, check, money order, VISA, or MasterCard. Turnaround: Digital downloads: less than 30 minutes for most files. Offline CD/DVD-ROMs: 1-2 weeks unless special arrangements are made and an express fee is paid. Technical_Prerequisites: Please check the MapInfo web site (http://www.mapinfo.com/) for the latest documentation on importing ESRI shape files. Metadata_Reference_Information: Metadata_Date: 20080506 Metadata_Review_Date: 20080506 Metadata_Future_Review_Date: 20090105 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical address Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: 907-451-5039 Contact_Facsimile_Telephone: 907-451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays. Contact_Instructions: Please contact us through the e-mail address above whenever possible. Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: none Metadata_Use_Constraints: If the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.