Pinney, D.S. 1998 map and vector digital data Public Data File PDF 98-37C Fairbanks, AK, USA State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (DGGS) 1 sheet, scale 1:63,360 http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=1865 This report provides detailed (1:63,360-scale) mapping of the Tanana A-1 and A-2 quadrangles (500 square miles; equivalent to eight 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 south of the Tanana B-1 Quadrangle. This report includes detailed surficial, structural, stratigraphic, and paleontologic data. Based on the resulting geologic maps, field investigations, and laboratory materials analyses, the report also includes derivative maps of geologic construction materials and geologic hazards. The Tanana A-1 and A-2 Quadrangles and surrounding area comprise several isolated mountainous ridges in the western Yukon-Tanana Upland of interior Alaska. The Tanana A-1 and A-2 Quadrangles lie between the villages of Rampart, on the Yukon River, and Manley Hot Springs, at the terminus of the Elliott Highway. At the time the report 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 expanded mineral exploration and development that can lead to the economic growth and the creation of new jobs needed by the Rampart-Manley-Tofty region's inhabitants and the State of Alaska. These objectives are consistent with the statewide goals and priorities articulated for the Department of Natural Resources by Alaska's Governor in his Executive Budget Summary for Fiscal Year 1997. 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." The numerical value(s) "1" and/or "2" included in the layer names correspond to the quadrangle(s) Tanana A-1 and/or Tanana A-2, respectively. Layers include: >tana1pingo_point types and locations of pingos >tana1srf_polygon comprehensive geologic polygons >tana1srfpts_point locations of measured stratigraphic sections or fossils >tana2pingo_point types and locations of pingos >tana2srf_polygon comprehensive geologic polygons >tana2srfpts_point locations of measured stratigraphic sections or fossils 1997 1998 publication date Complete none planned -151.018782 -149.971866 65.259054 64.990820 ISO 19115 Topic Category geoscientificInformation none Bison Fossils C14 Fossils Gold Mammoth Fossils Measured Sections Mining Placer Stratigraphy Surficial Geology Vertebrate Fossils None Manley Basin Manley Hot Springs Yukon River None Cenozoic Holocene Pleistocene Quaternary Tertiary 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.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 03HQAG0055 and by the Alaska State Legislature. Microsoft Windows XP SP2, ArcGIS 9.+, and any text editor. Reifenstuhl, R.R. Dover, J.H. Newberry, R.J. Clautice, K.H. Pinney, D.S. Liss, S.A. Blodgett, R.B. Weber, F.R. 1998 map, vector digital data, and text report Public Data File PDF 98-37A Fairbanks, AK, USA State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys 19 p., 1 sheet, scale 1:63,360 http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=1863 Reifenstuhl, R.R. Dover, J.H. Newberry, R.J. Clautice, K.H. Liss, S.A. Blodgett, R.B. Weber, F.R. 1998 map and vector digital data Public Data File PDF 98-37B 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=1864 Pinney, D.S. 1998 map and vector digital data Public Data File PDF 98-37D 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=1866 Data for surficial and materials 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 units, their ages, fossil, and field sample locations, structural features, surficial features, and structural measurements. 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. Surficial and engineering-geologic map data have 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. Total potential horizontal error for surficial-geologic map features is therefore estimated to be approximately 110 meters. The surficial and engineering 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. 271-286 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 p. 38 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 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) p. 49 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 (PDF 98-37C). Wagner, A.A. 1957 Proceedings v. I London, England 4th International Conference on Soil Mechanics and Foundation Engineering p. 125 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 (PDF 98-37C and PDF 98-37D). Yeend, W.E. 1989 U.S. Geological Survey Bulletin Bulletin 1946 Reston, VA, USA U.S. Geological Survey p. 107-109 paper 1989 publication date Yeend, 1989 This report contains information that was used to aid in the creation of and sample preparation for the surficial geologic map (PDF 98-37C). Fieldwork - Fieldwork for surficial geologic investigations, including ridge and valley traverses, roadcut investigations, and river exposures, was conducted for approximately 21 person-days in June and July 1997 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. 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, 1989 1997 Photo interpretation - Before, during, and after field work, surficial-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, 1989 1997 Digital Cartography - Surficial-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 1997 Universal Transverse Mercator 5 0.999600 -153.000000 0.000000 500000.000000 0.000000 coordinate pair 0.000064 0.000064 meters tana1srf_polygon Universal Transverse Mercator 5 0.999600 -153.000000 0.000000 500000.000000 0.000000 coordinate pair 0.000064 0.000064 meters tana2srf_polygon Universal Transverse Mercator 5 0.999600 -153.000000 0.000000 500000.000000 0.000000 coordinate pair 0.000005 0.000005 meters tana1pingo_point Universal Transverse Mercator 5 0.999600 -153.000000 0.000000 500000.000000 0.000000 coordinate pair 0.000005 0.000005 meters tana2pingo_point Universal Transverse Mercator 5 0.999600 -153.000000 0.000000 500000.000000 0.000000 coordinate pair 0.000032 0.000032 meters tana1srfpts_point Universal Transverse Mercator 5 0.999600 -153.000000 0.000000 500000.000000 0.000000 coordinate pair 0.000032 0.000032 meters tana2srfpts_point tana1srf_polygon.shp Object type is vector, there are 490 rows associated with this entity, and the entity values refer to surficial geologic polygons Alaska Division of Geological & Geophysical Surveys tana1srf_polygon SUNIT Surficial geologic map unit labels Alaska Division of Geological & Geophysical Surveys b Exposed bedrock- bedrock with essentially no cover Alaska Division of Geological & Geophysical Surveys bc Thinly covered bedrock- bedrock covered by thin (generally less than 1-m thick) veneer of surficial debris Alaska Division of Geological & Geophysical Surveys Qaf Alluvial fan deposits-Fan-shaped, heterogeneous mixtures of gravel with some sand and silt and few to numerous, subangular to rounded boulders, especially in proximal areas; clasts locally derived; may include debris-flow deposits; thick to thin bedded; surface smooth, except for numerous shallow, interconnected channels; locally covered by reworked silt. Alaska Division of Geological & Geophysical Surveys Qa Alluvium in modern stream channels-Elongated deposits of stratified gravel and sand with few to numerous boulders underlying active streams, flood plains, and associated low terraces; well sorted and medium to thick bedded, locally cross-bedded; shows fining-upward cycles. Alaska Division of Geological & Geophysical Surveys Qap Alluvial plain deposits-Irregular blankets and low-angle fans of stratified gravel and sand with silt interbeds and few to numerous boulders underlying much of Baker Creek flats; well sorted and medium to thick bedded, locally cross-bedded; surface flat to gently sloping with numerous shallow, interconnected channels Alaska Division of Geological & Geophysical Surveys Qas Silty alluvium in modern stream channels-Irregular, elongated deposits of stratified silt beneath modern channels and flood plains of streams draining loess-mantled slopes; may include fine-grained debris flow deposits, especially in the upper reaches; moderately to well sorted and medium to thin bedded, locally cross-bedded. Alaska Division of Geological & Geophysical Surveys Qfp Floodplain alluvium bordering modern streams-Elongated deposits of stratified pebble-cobble gravel and medium sand with few to numerous boulders forming modern flood plains and associated low (~3 m) terraces; typically mantled by thin layer of silty over-bank deposits Alaska Division of Geological & Geophysical Surveys Qsf Silt fan deposits-Fan-shaped deposits of dark brown to gray silt with some sand and angular to subrounded pebbles in proximal areas; may include fine-grained debris flow deposits, especially in the upper reaches; thick to thin bedded; surface smooth, except for numerous shallow, interconnected channels Alaska Division of Geological & Geophysical Surveys Qag Old, high-level alluvial gravels-Irregular residual deposits of gold-bearing, pebble-cobble gravel with well rounded quartzite boulders up to 3 m diameter preserved on high interfluves in the Eureka Creek area; up to 4 m thick, but generally much thinner; locally extensively reworked by mining activity Alaska Division of Geological & Geophysical Surveys Qac Undifferentiated alluvial and colluvial valley-fill deposits-Fan-shaped and elongated heterogeneous mixtures of subangular rock fragments and gravel with some silt and sand deposited in upper stream courses primarily by brief, intense summer stream flow, debris flows, and gelifluction; surface smooth, except for local low scarps and shallow, steep-sided channels. Alaska Division of Geological & Geophysical Surveys Qc Undifferentiated colluvium-Irregular, heterogeneous blankets, aprons, and fans of angular to subrounded rock fragments, gravel, sand, and silt that are left on slopes, slope bases, or high-level surfaces by residual weathering and complex mass-movement processes, including rolling, sliding, flowing, gelifluction, and frost creep Alaska Division of Geological & Geophysical Surveys Qca Colluvial apron and fan deposits-Apron- and fan-shaped, heterogeneous mixtures of angular rock fragments with trace to some gravel, sand, and silt deposited at the bases of steep walls of modern stream valleys; may include or be capped by a considerable amount of redeposited eolian silt; locally washed by meltwater and slope runoff; surface steep to gently sloping. Alaska Division of Geological & Geophysical Surveys Qel Loess-Homogeneous blankets of well-sorted, mottled, light grayish-brown silt deposited by eolian processes; generally structureless, but with broadly horizontal bedding and some laminations, wavy bedding, and small-scale cross-bedding; contains scattered small charcoal fragments and root casts; local cryoturbation structures Alaska Division of Geological & Geophysical Surveys Qelp Pitted loess-Homogeneous blankets of mottled, light grayish-brown silt and organic silt deposited by eolian processes and subsequently modified by melting of ice-rich permafrost; generally massive to locally bedded Alaska Division of Geological & Geophysical Surveys Qer Reworked upland silt--Heterogeneous blankets of silt and organic silt originally laid down by eolian processes and subsequent minor to extensive reworking by fluvial and colluvial processes; includes silt-rich debris-flow deposits; may contain angular clasts of local origin; massive to thinly bedded, with some wavy bedding and cross-bedding; commonly perennially frozen and ice rich Alaska Division of Geological & Geophysical Surveys Qld Delta deposits-Fan-shaped, heterogeneous mixture of well sorted silt, sand, and gravel; thick to thin bedded; shows cross-bedding and fining-upward cycles; surface smooth, except for numerous shallow, interconnected channels. Alaska Division of Geological & Geophysical Surveys Qs Swamp deposits-Semicircular to irregular deposits of silt and peat in poorly-drained areas; saturated and locally frozen below a depth of about 1 m, locally ice rich; surface flat and smooth, may have standing water. Alaska Division of Geological & Geophysical Surveys Qmt Mine tailings-Water-washed pebble-cobble gravel with trace to some sand reworked by placer mining operations; typically well sorted; surface irregular or forming symmetrical ridges and cones. Alaska Division of Geological & Geophysical Surveys WATER body of water Alaska Division of Geological & Geophysical Surveys tana2srf_polygon.shp Object type is vector, there are 438 rows associated with this entity, and the entity values refer to surficial geologic polygons Alaska Division of Geological & Geophysical Surveys tana2srf_polygon SUNIT Surficial geologic map unit labels Alaska Division of Geological & Geophysical Surveys b Exposed bedrock- bedrock with essentially no cover Alaska Division of Geological & Geophysical Surveys bc Thinly covered bedrock- bedrock covered by thin (generally less than 1-m thick) veneer of surficial debris Alaska Division of Geological & Geophysical Surveys Qaf Alluvial fan deposits-Fan-shaped, heterogeneous mixtures of gravel with some sand and silt and few to numerous, subangular to rounded boulders, especially in proximal areas; clasts locally derived; may include debris-flow deposits; thick to thin bedded; surface smooth, except for numerous shallow, interconnected channels; locally covered by reworked silt. Alaska Division of Geological & Geophysical Surveys Qa Alluvium in modern stream channels-Elongated deposits of stratified gravel and sand with few to numerous boulders underlying active streams, flood plains, and associated low terraces; well sorted and medium to thick bedded, locally cross-bedded; shows fining-upward cycles. Alaska Division of Geological & Geophysical Surveys Qap Alluvial plain deposits-Irregular blankets and low-angle fans of stratified gravel and sand with silt interbeds and few to numerous boulders underlying much of Baker Creek flats; well sorted and medium to thick bedded, locally cross-bedded; surface flat to gently sloping with numerous shallow, interconnected channels Alaska Division of Geological & Geophysical Surveys Qas Silty alluvium in modern stream channels-Irregular, elongated deposits of stratified silt beneath modern channels and flood plains of streams draining loess-mantled slopes; may include fine-grained debris flow deposits, especially in the upper reaches; moderately to well sorted and medium to thin bedded, locally cross-bedded. Alaska Division of Geological & Geophysical Surveys Qfp Floodplain alluvium bordering modern streams-Elongated deposits of stratified pebble-cobble gravel and medium sand with few to numerous boulders forming modern flood plains and associated low (~3 m) terraces; typically mantled by thin layer of silty over-bank deposits Alaska Division of Geological & Geophysical Surveys Qsf Silt fan deposits-Fan-shaped deposits of dark brown to gray silt with some sand and angular to subrounded pebbles in proximal areas; may include fine-grained debris flow deposits, especially in the upper reaches; thick to thin bedded; surface smooth, except for numerous shallow, interconnected channels Alaska Division of Geological & Geophysical Surveys Qac Undifferentiated alluvial and colluvial valley-fill deposits-Fan-shaped and elongated heterogeneous mixtures of subangular rock fragments and gravel with some silt and sand deposited in upper stream courses primarily by brief, intense summer stream flow, debris flows, and gelifluction; surface smooth, except for local low scarps and shallow, steep-sided channels. Alaska Division of Geological & Geophysical Surveys Qc Undifferentiated colluvium-Irregular, heterogeneous blankets, aprons, and fans of angular to subrounded rock fragments, gravel, sand, and silt that are left on slopes, slope bases, or high-level surfaces by residual weathering and complex mass-movement processes, including rolling, sliding, flowing, gelifluction, and frost creep Alaska Division of Geological & Geophysical Surveys Qca Colluvial apron and fan deposits-Apron- and fan-shaped, heterogeneous mixtures of angular rock fragments with trace to some gravel, sand, and silt deposited at the bases of steep walls of modern stream valleys; may include or be capped by a considerable amount of redeposited eolian silt; locally washed by meltwater and slope runoff; surface steep to gently sloping. Alaska Division of Geological & Geophysical Surveys Qel Loess-Homogeneous blankets of well-sorted, mottled, light grayish-brown silt deposited by eolian processes; generally structureless, but with broadly horizontal bedding and some laminations, wavy bedding, and small-scale cross-bedding; contains scattered small charcoal fragments and root casts; local cryoturbation structures Alaska Division of Geological & Geophysical Surveys Qelp Pitted loess-Homogeneous blankets of mottled, light grayish-brown silt and organic silt deposited by eolian processes and subsequently modified by melting of ice-rich permafrost; generally massive to locally bedded Alaska Division of Geological & Geophysical Surveys Qer Reworked upland silt--Heterogeneous blankets of silt and organic silt originally laid down by eolian processes and subsequent minor to extensive reworking by fluvial and colluvial processes; includes silt-rich debris-flow deposits; may contain angular clasts of local origin; massive to thinly bedded, with some wavy bedding and cross-bedding; commonly perennially frozen and ice rich Alaska Division of Geological & Geophysical Surveys Qs Swamp deposits-Semicircular to irregular deposits of silt and peat in poorly-drained areas; saturated and locally frozen below a depth of about 1 m, locally ice rich; surface flat and smooth, may have standing water. Alaska Division of Geological & Geophysical Surveys Qmt Mine tailings-Water-washed pebble-cobble gravel with trace to some sand reworked by placer mining operations; typically well sorted; surface irregular or forming symmetrical ridges and cones. Alaska Division of Geological & Geophysical Surveys tana1pingo_point.shp Object type is point, there are 6 rows associated with this entity, and the entity values refer to types and locations of pingos Alaska Division of Geological & Geophysical Surveys tana1pingo_point TYPE Pingo type Alaska Division of Geological & Geophysical Surveys intact The pingo was observed to be intact Alaska Division of Geological & Geophysical Surveys collapsed The pingo was observed to be collapsed Alaska Division of Geological & Geophysical Surveys tana2pingo_point.shp Object type is point, there are 14 rows associated with this entity, and the entity values refer to types and locations of pingos Alaska Division of Geological & Geophysical Surveys tana2pingo_point TYPE Pingo type Alaska Division of Geological & Geophysical Surveys intact The pingo was observed to be intact Alaska Division of Geological & Geophysical Surveys collapsed The pingo was observed to be collapsed Alaska Division of Geological & Geophysical Surveys tana1srfpts_point.shp Object type is point, there are 4 rows associated with this entity, and the entity values refer to locations of measured stratigraphic sections or fossils Alaska Division of Geological & Geophysical Surveys tana1srfpts_point TYPE Sample location type Alaska Division of Geological & Geophysical Surveys measured section Location of a measured stratigraphic section Alaska Division of Geological & Geophysical Surveys fossil Location of a fossil Alaska Division of Geological & Geophysical Surveys NAME Label given to specific point location Alaska Division of Geological & Geophysical Surveys A Stratigraphic location "97DP009 - Gravel Pit". ***Note: points having the software-defined attribute/column FID whose values are 1 and 3 are both listed in attribute/column "NAME" with a value of "A", however the attribute/column FID whose value is 1 should be labeled "B" in the attribute/column "NAME", corresponding to the stratigraphic section "97DP020 - Doric Creek". Locations "A" and "B" are labelled correctly on the Preliminary Surficial Geologic Map of the Tanana A-1 and A-2 Quadrangles, Central Alaska (Publication PDF98-37C-SH1). Alaska Division of Geological & Geophysical Surveys 2 Fossil sample location, see fossil fauna descriptions on the Preliminary Surficial Geologic Map of the Tanana A-1 and A-2 Quadrangles, Central Alaska (Publication PDF98-37C-SH1) for more information Alaska Division of Geological & Geophysical Surveys 4 Fossil sample location, see fossil fauna descriptions on the Preliminary Surficial Geologic Map of the Tanana A-1 and A-2 Quadrangles, Central Alaska (Publication PDF98-37C-SH1) for more information Alaska Division of Geological & Geophysical Surveys tana2srfpts_point.shp Object type is point, there are 4 rows associated with this entity, and the entity values refer to locations of measured stratigraphic sections or fossils Alaska Division of Geological & Geophysical Surveys tana2srfpts_point TYPE Sample location type Alaska Division of Geological & Geophysical Surveys measured section Location of a measured stratigraphic section Alaska Division of Geological & Geophysical Surveys fossil Location of a fossil Alaska Division of Geological & Geophysical Surveys NAME Label given to specific point location Alaska Division of Geological & Geophysical Surveys C Stratigraphic location "97DP027 - Miller Gulch" Alaska Division of Geological & Geophysical Surveys D Stratigraphic location "97DP030 - Dalton Gulch" Alaska Division of Geological & Geophysical Surveys 1 Fossil sample location, see fossil fauna descriptions on the Preliminary Surficial Geologic Map of the Tanana A-1 and A-2 Quadrangles, Central Alaska (Publication PDF98-37C-SH1) for more information Alaska Division of Geological & Geophysical Surveys 3 Fossil sample location, see fossil fauna descriptions on the Preliminary Surficial Geologic Map of the Tanana A-1 and A-2 Quadrangles, Central Alaska (Publication PDF98-37C-SH1) for more information 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. Public Data File 98-37C 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://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=1865 ArcGIS Shapefile ESRI ArcGIS 9.x No compression applied http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=1865 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 20090321 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.