Pinney, D.S. 1997 map and vector digital data Report of Investigation RI 97-15E Fairbanks, AK, USA State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys 1 sheet, scale 1:63,360 http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=2555 This report provides detailed (1:63,360-scale) mapping of the Tanana B-1 Quadrangle (250 square miles; equivalent to four 7.5 minute quadrangles). The area is part of the Manley Hot Springs-Tofty mining districts and adjacent to the Rampart mining district to the north of the Tanana A-1 and A-2 Quadrangles. This report includes a derivative map of potential geologic hazards based on the resulting geologic maps, field investigations, and laboratory materials analyses. The Tanana B-1 quadrangle lies between the villages of Rampart, on the Yukon River, and Manley Hot Springs, at the terminus of the Elliot Highway. At the time this project was published the area towns were not part of any municipal or local governmental jurisdiction. The investigation of gold, tin, and other mineral occurrences in conjunction with comprehensive geologic mapping and recently acquired geophysical data will pro­vide a scientific basis for continued mineral exploitation that will economically benefit the region's inhabitants and the State of Alaska. This publication also identifies sources of construction materials and evaluates the type and severity of geologic constraints to future development in the region. 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: >tanb1haz2_polygon geologic hazards units >tanhazflt2_arc geologic hazards structural lines 1996 1997 publication date Complete none planned -150.52404955 -149.97139557 65.50914386 65.24096052 ISO 19115 Topic Category geoscientificInformation none Avalanche Earthquake Engineering Faulting Floods Geologic Geomorphology Landslide Liquefaction Permafrost Surficial none Yukon-Tanana Upland 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 address

3354 College Road

Fairbanks AK 99709-3707 USA (907) 451-5029 (907) 451-5020 (907) 451-5050 dggspubs@alaska.gov You may view our web site at http://www.dggs.dnr.state.ak.us 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. Funding for the geologic mapping and geochronologic dating performed for this project was provided by the U.S. Geological Survey STATEMAP Program under award number 1474-HQ-96-AG (June 1996 through May 1997) and by the Alaska State Legislature. Microsoft Windows XP SP2, ArcGIS 9.+, and any text editor. Reifenstuhl, R.R. Dover, J.H. Pinney, D.S. Newberry, R.J. Clautice, K.H. Liss, S.A. Blodgett, R.B. Bundtzen, T.K. Weber, F.R. 1997 map and vector digital data Report of Investigation RI 97-15A Fairbanks, AK, USA State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (DGGS) 17 p., 1 sheet, scale 1:63,360 http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=2551 Text report available Reifenstuhl, R.R. Dover, J.H. Pinney, D.S. Newberry, R.J. Clautice, K.H. Liss, S.A. Blodgett, R.B. Bundtzen, T.K. Weber, F.R. 1997 map and vector digital data Report of Investigation RI 97-15B Fairbanks, AK, USA State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (DGGS) 15 p., 1 sheet, scale 1:63,360 http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=2552 Text report available Pinney, D.S. 1997 map and vector digital data Report of Investigation RI 97-15C Fairbanks, AK, USA State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys 5 p., 1 sheet, scale 1:63,360 http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=2553 Text report available Pinney, D.S. 1997 map and vector digital data Report of Investigation RI 97-15D Fairbanks, AK, USA State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys 1 sheet, scale 1:63,360 http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=2554 Surficial and hazards point, line, and polygon data were determined in the field using 1:63,360-scale topographic maps and 1:50,000 (nominal) scale, color-infrared aerial photographs. 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. Attributes were verified for consistency and completeness during the creation of the metadata. Polygon topology present and clean on appropriate data. Other data are line, point, or annotation data and do not require topologic relationships. This dataset includes geospatial information about geologic hazard units and structural features. DGGS location data and estimated position errors were manually entered into a spreadsheet. Sample numbers and locations with selected data were spatially registered and analyzed in ArcGIS software. Location data for the surficial and materials maps were determined visually using topographic maps at a scale of 1:63,360 and 1:50,000 (nominal) scale, color-infrared aerial photographs. See "Source_Information" section for horizontal positional accuracy of locations not measured by DGGS. 100 A value of estimated position error in meters was calculated by the GPS units and recorded for each sample location. 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 in effect until May 1, 2000, and thus during the time of this field work. 110 A value of estimated position error in meters. The hazards-geologic map data has a horizontal positional accuracy dependent on: 1) the 1:50,000-scale (nominal) aerial photographs on which it is based, with an estimated potential error due to a pen line width of approximately 0.001 being equivalent to approximately 1.5 meters on the ground; 2) the accuracy of the human zoom transfer scope operator in tracing the line work from acetate overlays to topographic base maps, with an estimated error due to a pen line width of approximately 0.001 being equivalent to approximately 1.5 meters on the ground; 3) the accuracy of the zoom transfer process itself, error magnitude highly variable and unknown but potentially large; 4) the digitizing RMS error of 0.003 inches (input coverage units), which equates to approximately 5 meters on the ground for a 1:63,360-scale map; and 5) the accuracy of the human operator digitizing the geologic line work from the topographic base maps, with an estimated error due to a pen line width of approximately 0.001 being equivalent to approximately 1.5 meters on the ground. The hazards-geologic field maps were digitized using a map tablet and cross-hair mouse. Map error is induced by: (1) transferring map data from base topography to a mylar compilation map, with an estimated potential error due to a pen line width of approximately 0.001 being equivalent to approximately 1.5 meters on the ground; (2) the digitizing RMS error [24 control points on a regular grid have an average RMS error of 10.8 meters on the ground; individual control point error ranges from 4.3 to 21.2 meters on the ground]; and (3) the accuracy of the human operator digitizing the geologic line work from the topographic base map, with an estimated error due to a pen line width of approximately 0.001 being equivalent to approximately 1.5 meters on the ground. Eakin, H.M. 1912 U.S. Geological Survey Bulletin Bulletin 520 Reston, VA, USA U.S. Geological Survey p. 271-287 http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=4819 U.S. Geological Survey Staff 1912 document U.S. Geological Survey Bulletin Bulletin 520 Reston, VA, USA U.S. Geological Survey 352 p., 1 sheet, scale 1:2,500,000 paper 1912 publication date Eakin, 1912 This map contains geologic unit descriptions and outcrop locations and was used to plan traverses and help define geologic units. Eakin, H.M. 1913 U.S. Geological Survey Bulletin Bulletin 535 Reston, VA, USA U.S. Geological Survey 38 p., 2 sheets, scale 1:250,000 http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=3412 paper 1913 publication date Eakin, 1913 This map contains geologic unit descriptions and outcrop locations and was used to plan traverses and help define geologic units. Hopkins, D.M. Taber, B. 1962 Special Paper v. 68 Boulder, CO, USA Geological Society of America p. 116 NONE paper 1962 publication date Hopkins and Taber, 1962 This map contains geologic unit descriptions and outcrop locations and was used to plan traverses and help define geologic units. Newberry, R.J. Clautice, K.H. 1997 Public Data File PDF 97-49 Fairbanks, AK, USA State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (DGGS) 49 p. http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=1813 paper 1997 publication date Newberry and Clautice, 1997 This report contains information that was used to aid in the creation of and sample preparation for the surficial geologic map (RI 97-15C). Wagner, A.A. 1957 Proceedings v. I London, England 4th International Conference on Soil Mechanics and Foundation Engineering 125 p. NONE paper 1957 publication date Wagner, 1957 This report contains information that was used to aid in the creation of and sample preparation for the surficial and geologic materials map (RI 97-15C and RI 97-15D). Yeend, W. 1990 U.S. Geological Survey Bulletin Bulletin 1946 Reston, VA, USA U.S. Geological Survey p. 107-109 http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=4503 paper 1990 publication date Yeend, 1990 This report contains information that was used to aid in the creation of and sample preparation for the surficial geologic map (RI 97-15C). Fieldwork - Fieldwork for hazards-geologic investigations, including ridge and valley traverses, road-cut investigations, and river exposures, was conducted approximately between April 30 and July 4, 1996 by a surficial geologist. Field notes and sediment samples were collected throughout the area for surficial investigations. Surficial mapping involved using sources cited below on a regular basis for checking and correlating general units. The surficial mapper recorded observations on co-registered acetate overlays on 1:50,000-scale (nominal) color-infrared aerial photographs, and directly on 1:63,360-scale topographic base maps. Stations were located using air photos and topographic maps. Eakin, 1912 Eakin, 1913 Hopkins and Taber, 1962 Newberry and Clautice, 1997 Yeend, 1990 1996 Photo interpretation - Before, during, and after field work, hazards-geologic information was interpreted using 1:50,000-scale (nominal) color-infrared air-photo stereopairs, and compiled onto acetate overlays. Photo interpretation was based on field notes from fieldwork process step (above), observed land forms and relationships in the photos, and all known geologic data from previous work in the area. The main sources of existing data include Eakin (1912; 1913), Hopkins and Tabor (1962), and Yeend (1989). The overlay information was transferred to a paper 1:63,360-scale USGS topographic base using a zoom transfer scope. Eakin, 1912 Eakin, 1913 Hopkins and Taber, 1962 Newberry and Clautice, 1997 Yeend, 1990 1996 Digital Cartography - Hazards-geologic information was digitized from the paper USGS topographic base map into Arc/Info 7.0.4 GIS (ArcEdit module) using a large-format digitizing table. Surficial-geologic polygons and lines were then edited and attributed using Arc, Info, and ArcEdit. Bedrock point data of locations of structural observations (strike, dip, cleavage, jointing, etc.) were intersected with the surficial-geologic polygon coverage using the Arc command "intersect" in order to identify locations that were mapped as surficial materials based on aerial photography but were found to have small exposures that were desirable to be mapped as bedrock. These areas were then modified in the surficial-geologic coverages to be areas of bedrock exposure. Final bedrock and surficial geology polygon coverages were merged using the Arc command "union" to generate the polygon coverage used to make the comprehensive geologic map. Other cartographic elements, primarily text and tables, were created in CorelDraw, converted to CGM format, and imported into ArcPlot for final layout. Data from the comprehensive geologic map of the area were 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". Additional features were mapped from ground observations and interpretation of air photos, and digitized and attributed using ArcInfo. ArcPlot was used to generate plot files of the resulting materials coverage using DGGS-standard symbology. Wagner, 1957 1996 Universal Transverse Mercator 5 0.999600 -153.000000 0.000000 500000.000000 0.000000 coordinate pair 0.000064 0.000064 meters tanb1haz2_polygon Universal Transverse Mercator 5 0.999600 -153.000000 0.000000 500000.000000 0.000000 coordinate pair 0.000064 0.000064 meters tanhazflt2_arc D_Clarke_1866 Clarke 1866 6,378,206.4 294.978698 tanb1haz2_polygon.shp Object type is vector, there are 765 rows associated with this entity, and the entity values refer to geologic hazards unit contacts Alaska Division of Geological & Geophysical Surveys tanb1haz2_polygon HAZ Potential geologic hazards definitions Alaska Division of Geological & Geophysical Surveys NA No known hazards Alaska Division of Geological & Geophysical Surveys RIV River- Yukon River Alaska Division of Geological & Geophysical Surveys I Significant ground-ice content Alaska Division of Geological & Geophysical Surveys II Potentially susceptible to earthquake-induced liquefaction. Significant ground-ice content. Alaska Division of Geological & Geophysical Surveys III Potentially susceptible to earthquake-induced liquefaction. Seasonal flooding. Alaska Division of Geological & Geophysical Surveys IV Rapid mass movements on steeper slopes Alaska Division of Geological & Geophysical Surveys V Significant ground-ice content. Rapid mass movements on steeper slopes. Alaska Division of Geological & Geophysical Surveys VI Seasonal flooding. Includes seasonal stream icings. Rapid mass movements on steeper slopes. Alaska Division of Geological & Geophysical Surveys X-COORD Eastings, UTM Zone 5, Clarke 1866 (see Spatial_Reference_Information). Field location where hazard assessment was made. Alaska Division of Geological & Geophysical Surveys 616132.6 639934.1 meters Y-COORD Northings, UTM Zone 5, Clarke 1866 (see Spatial_Reference_Information). Field location where hazard assessment was made. Alaska Division of Geological & Geophysical Surveys 7238619 7267230 meters tanhazflt2_arc.shp Object type is vector, there are 9 rows associated with this entity, and the entity values refer to potential geologic hazards structural lines Alaska Division of Geological & Geophysical Surveys tanhazflt2_arc SYMBOL Line symbols for types of faults Alaska Division of Geological & Geophysical Surveys 0 Hidden line, defines the polygon boundary, but is not displayed on the map for aesthetic purposes Alaska Division of Geological & Geophysical Surveys 11 Fault. *** Note: arcs having the software-defined attribute/column FID whose values are "6 and 8" and "7 and 9" represent the Minook Creek and Victoria Creek Faults, respectively. The annotation "Minook Creek Fault" and "Victoria Creek Fault", as seen on the Derivative Map of Potential Geological Hazards in the Tanana B-1 Quadrangle, Central Alaska (Publication RI97-15E-SH1), is not preserved in the structure data. *** Alaska Division of Geological & Geophysical Surveys CODE Numerical assignment of cartographic lines Alaska Division of Geological & Geophysical Surveys 1 Bounding box. *** Note: A code value of "1" is not correct. The correct code value for all software-defined attribute/column FIDs should be "6", which corresponds to a fault. *** Alaska Division of Geological & Geophysical Surveys 2 Contact. *** Note: A code value of "2" is not correct. The correct code value for all software-defined attribute/column FIDs should be "6", which corresponds to a fault. *** 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.dnr.state.ak.us) for the latest information on available data. Please contact us using the e-mail address provided above when possible. Report of Investigation 97-15E 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. PDF 1.6 No compression applied http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=2555 ArcGIS Shapefile ESRI ArcGIS 9.x No compression applied http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=2555 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.dnr.state.ak.us/) 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 20090322 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.