Pinney, D.S. 200105 map, vector digital data Preliminary Interpretive Report PIR 2001-3D Fairbanks, AK, USA State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (DGGS) 1 sheet, scale 1:63,360 http://dx.doi.org/10.14509/2672 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. 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. 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 1999 2001 publication date Complete none planned -142.00902346 -141.49552824 64.25256429 63.9974188 ISO 19115 Topic Category geoscientificInformation none Construction Materials Engineering Engineering Geology Geologic Hazards Geology Mining STATEMAP Project none Alaska, State of Fortymile Mining District Eagle Quadrangle Chicken 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). 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. State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys GIS Data Manager/Cartographer mailing and physical

3354 College Road

Fairbanks AK 99709-3707 (907) 451-5029 (907) 451-5020 (907) 451-5050 dggspubs@alaska.gov 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. 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. Microsoft Windows XP SP2, ArcGIS 9.+, and any text editor. Werdon, M.B. Newberry, R.J. Szumigala, D.J. Pinney, D.S. 200105 map, vector digital data Preliminary Interpretive Report PIR 2001-3A Fairbanks, AK, USA State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (DGGS) 1 sheet, scale 1:63,360 http://dx.doi.org/10.14509/2669 Werdon, M.B. Newberry, R.J. Szumigala, D.J. 200105 Preliminary Interpretive Report PIR 2001-3B Fairbanks, AK State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys 1 sheet, scale 1:63,360 http://dx.doi.org/10.14509/2670 Pinney, D.S. 200105 Preliminary Interpretive Report PIR 2001-3C Fairbanks, AK State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys 1 sheet, scale 1:63,360 http://dx.doi.org/10.14509/2671 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. Polygon topology present. Polygon topology present on appropriate data; others are line, point, or annotation data and do not require topologic relationships. This data set includes geospatial data about geologic units, pingo locations, geologic hazards, and potential construction materials resources. Surficial mappers recorded observations on 1:50,000 scale (nominal) color-infrared aerial photographs and 1:63,360 scale topographic base maps. 15 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. Werdon, M.B. Newberry, R.J. Szumigala, D.J. 2001 map Preliminary Interpretive Report PIR 2001-3A Fairbanks, AK State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys http://dx.doi.org/10.14509/2669 paper, online, CD-ROM 1999 publication date Werdon and others, 2001 See this publication cited in the Process Step section below Wagner, A.A. 1957 report Proceedings, 4th International Conference on Soil Mechanics and Foundation Engineering Vol. I London, England International Conference on Soil Mechanics and Foundation Engineering p. 125 paper 1957 publication date Wagner, 1957 See this publication cited in the Process Step section below 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. Wagner, 1957 Werdon and others, 2001 2000 Universal Transverse Mercator 7 0.999600 -141.000000 0.000000 500000.000000 0.000000 coordinate pair 0.000205 0.000205 Meters fmmatgeo Universal Transverse Mercator 7 0.999600 -141.000000 0.000000 500000.000000 0.000000 coordinate pair 0.000032 0.000032 Meters fmpingos D_Clarke_1866 Clarke 1866 6,378,206.400000 294.978698 fmmatgeo.shp Object type is vector, there are 997 rows associated with this entity, and the entity values refer to engineering-geologic units Alaska Division of Geological & Geophysical Surveys fmmatgeo MAT engineering-geologic materials map units Alaska Division of Geological & Geophysical Surveys LK Lake Alaska Division of Geological & Geophysical Surveys GS Fluvial and glaciofluvial gravel, sand, and silt. Chiefly (estimated >80 percent) clean sand and gravel. Grain size, sorting and degree of stratification are variable. Alaska Division of Geological & Geophysical Surveys GM 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. Alaska Division of Geological & Geophysical Surveys SM Silt deposited primarily by wind and reworked by fluvial and colluvial processes. May be organic rich. Alaska Division of Geological & Geophysical Surveys OR 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. Alaska Division of Geological & Geophysical Surveys BC Medium-jointed, fine- to coarse-grained sedimentary carbonate rocks and their metamorphic equivalents. Includes limestone and marble. Alaska Division of Geological & Geophysical Surveys BG Coarse-jointed, coarse-grained igneous lithologies and their metamorphic equivalents. Chiefly granitic rocks. Includes coarse-grained gneiss. Alaska Division of Geological & Geophysical Surveys BM Medium-jointed, fine- to medium-grained quartzose sedimentary rocks and their metamorphic equivalents. Chiefly quartzite in this map area. Alaska Division of Geological & Geophysical Surveys BV Medium-jointed, fine-grained igneous rocks and their metamorphic equivalents. Chiefly metavolcanics and dikes. PIR 2001-3d, Description of Map Units BO 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. Alaska Division of Geological & Geophysical Surveys BU 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. Alaska Division of Geological & Geophysical Surveys fmpingos.shp Object type is point, there are 2 rows associated with this entity, and the entity values refer to pingo locations Alaska Division of Geological & Geophysical Surveys fmpingos TEMP attribute describing the object pingo Alaska Division of Geological & Geophysical Surveys The description is not from any specific domain UNIT attribute describing the object pingo Alaska Division of Geological & Geophysical Surveys The description is not from any specific domain SUNIT attribute describing the object pingo Alaska Division of Geological & Geophysical Surveys The description is not from any specific domain SURFBED what portions of contacts are under surficial cover as opposed to exposed bedrock Alaska Division of Geological & Geophysical Surveys S Fluvial and glaciofluvial gravel, sand, and silt. Chiefly (estimated >80 percent) clean sand and gravel. Grain size, sorting and degree of stratification are variable. Alaska Division of Geological & Geophysical Surveys State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Natural Resource Technician mailing and physical

3354 College Road

Fairbanks AK 99709-3707 USA 907-451-5020 None available. 907-451-5050 dggspubs@alaska.gov 8 am to 4:30 pm, Monday through Friday, except State holidays 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. Preliminary Interpretive Report 2001-3D 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. 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. Printed publication can be purchased for $13.00 (contact information below) plus shipping if mailed. PDF 1.6 No compression applied http://dx.doi.org/10.14509/2672 ArcGIS Shapefile ESRI ArcGIS 9.x No compression applied http://dx.doi.org/10.14509/2672 CD-ROM Joliet Digital files on CD-ROM are available for $10.00 (contact information below). No fees charged for downloaded files. 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. 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. Please check the MapInfo web site (http://www.mapinfo.com/) for the latest documentation on importing ESRI shape files. 20080506 20080506 20090105 State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Metadata Manager mailing and physical address

3354 College Road

Fairbanks AK 99709-3707 USA 907-451-5039 907-451-5050 dggspubs@alaska.gov 8 am to 4:30 pm, Monday through Friday, except State holidays. Please contact us through the e-mail address above whenever possible. FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 none 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.