c1c8dafd-f9e4-4dfa-92dd-6d7586c6982a_source eng; USA utf8 dataset State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Metadata Manager 907-451-5039 907-451-5050 3354 College Road Fairbanks AK 99709-3707 USA 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. pointOfContact 2008-05-06 ISO 19115 Geographic Information - Metadata ISO 19115:2003/Cor.1:2006(E) Geologic map of the Tanana A-1 and A-2 quadrangles, central Alaska 1998-01-01 publication State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (DGGS) Fairbanks AK, USA publisher Reifenstuhl, R.R. originator Dover, J.H. originator Newberry, R.J. originator Clautice, K.H. originator Pinney, D.S. originator Liss, S.A. originator Blodgett, R.B. originator Weber, F.R. originator http://dx.doi.org/10.14509/1863 MAP AND VECTOR DIGITAL DATA Public Data File PDF 98-37A v 1.1 text report, 19 p., 1 sheet, scale 1:63,360 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 bedrock, surficial, structural, and stratigraphic 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. 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. completed State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys GIS Data Manager/Cartographer (907) 451-5029 (907) 451-5020 (907) 451-5050 3354 College Road Fairbanks AK 99709-3707 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. pointOfContact notPlanned 40Ar/39Ar Aerial Photography Aeromagnetic Map Aeromagnetic Survey Age Dates Bibliography Biostratigraphy Carbonates Cerium CIPW Norms Clastics Conductivity Survey Core Logs Cultural Resources Depositional Environment Diagenesis Disseminated Economic Geology Economic Study Electromagnetic Survey Epithermal Erosion Faulting Folding Fossils Geologic Map Geomorphology Geophysical Map Glacial Glacial Processes Gold Greenschist Greisen Historic Resources Hot Springs K-Ar Lab Methods Lode Magnetic Susceptibility Magnetometer Survey Major Oxides Marine Measured Stratigraphic Section Metamorphic Grade Metamorphism Mineralogy Mining Modal Analysis Niobium Ores Orogeny Paleobotany Paleocurrent Paleoenvironment Paleontology Palynology Petrogenesis Petrography Petrology Placer Plutonic Plutonic Hosted Precious Metals Production Data Provenance Rare Earth Elements Reconstructions Regional Regional Metamorphism Remote Sensing Resistivity Survey Resource Assessment Sandstone Sedimentary Sedimentation Shale Silver Structure Structure Map Surficial Tectonic Map Tectonics Terranes Topographic Map Turbidites Type Section Uplift Volcanic Volcanic Hosted theme none Manley Basin Yukon River place None Amy Creek Assemblage Hot Springs Pluton Livengood Dome Chert Wickersham Unit Wilber Creek Ash Wolverine Creek Sequence stratum None Cambrian Carboniferous Cenozoic Cretaceous Devonian Famennian Holocene Jurassic Mesozoic Mississippian Ordovician Paleozoic Permian Pleistocene Proterozoic Quaternary Silurian Tertiary Triassic temporal None 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. otherRestrictions 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. otherRestrictions 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). Interpretive geologic bedrock map of the Tanana A-1 and A-2 quadrangles, central Alaska 1998-01-01 publication State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (DGGS) Fairbanks AK, USA publisher Reifenstuhl, R.R. originator Dover, J.H. originator Newberry, R.J. originator Clautice, K.H. originator Liss, S.A. originator Blodgett, R.B. originator Weber, F.R. originator http://dx.doi.org/10.14509/1864 MAP AND VECTOR DIGITAL DATA Public Data File PDF 98-37B 17 p., 1 sheet, scale 1:63,360 crossReference Surficial geologic map of the Tanana A-1 and A-2 quadrangles, central Alaska 1998-01-01 publication State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Fairbanks AK, USA publisher Pinney, D.S. originator http://dx.doi.org/10.14509/1865 MAP AND VECTOR DIGITAL DATA Public Data File PDF 98-37C 1 sheet, scale 1:63,360 crossReference Derivative engineering geologic map of the Tanana A-1 and A-2 quadrangles, central Alaska 1998-01-01 publication State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Fairbanks AK, USA publisher Pinney, D.S. originator http://dx.doi.org/10.14509/1866 MAP AND VECTOR DIGITAL DATA Public Data File PDF 98-37D 1 sheet, scale 1:63,360 crossReference eng; USA geoscientificInformation Native Dataset Environment: Microsoft Windows XP SP2, ArcGIS 9.+, and any text editor. Technical Prerequisites: Please check the MapInfo web site (http://www.mapinfo.com/) for the latest documentation on importing ESRI shape files. -151.018782 -149.971866 64.990820 65.259054 1997-01-01 1998-01-01 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: >hflsa1_comp_polygon comprehensive geologic unit polygons (hornfels) >hflsa2_comp_polygon comprehensive geologic unit polygons (hornfels) >tana12_att_point points for the strike, dip, and plunge of bedding planes, foliation, and various lineaments >tana1bedcon_arc comprehensive geologic unit contacts >tana1bur_arc vector lines for various types of geophysical features >tana1comp_polygon comprehensive geologic unit polygons >tana1fld_point points and vector lines for types of anticlines or synclines >tana1fldline_arc types of folds, anticlines, synclines, or lines depicting a cross-section >tana1srf_polygon comprehensive geologic polygons >tana1strline_arc vector lines for types of faults >tana2bedcon_arc comprehensive geologic unit contacts >tana2bur_arc vector lines for various types of geophysical features >tana2comp_polygon comprehensive geologic unit polygons >tana2fld_point points and vector lines for types of anticlines or synclines >tana2fldline_arc types of folds, anticlines, synclines, or lines depicting a cross-section >tana2srf_polygon comprehensive geologic polygons >tana2strline_arc vector lines for types of faults true PDF 1.6 ArcGIS Shapefile ESRI ArcGIS 9.x State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Natural Resource Technician 907-451-5020 907-451-5050 3354 College Road Fairbanks AK 99709-3707 USA 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. distributor Printed publication can be purchased for $15.00 (contact information below) plus shipping if mailed. 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. 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. http://dx.doi.org/10.14509/1863 PDF CSDGM IMPORT ERROR: No digtinfo/formcont information http://dx.doi.org/10.14509/1863 ArcGIS Shapefile CSDGM IMPORT ERROR: No digtinfo/formcont information dataset Horizontal Positional Accuracy Report 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. Horizontal Positional Accuracy 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. meters 100 Horizontal Positional Accuracy A value of estimated position error in meters. Surficial and bedrock 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 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 bedrock and comprehensive 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. Total potential horizontal error for bedrock and comprehensive geologic map features is estimated to be approximately 110 meters. meters 110 This dataset includes geospatial information about geologic units, their ages, field sample locations, structural features, structural measurements, and geology interpreted from airborne geophysics. This dataset includes geospatial information about geologic units, their ages, field sample locations, structural features, structural measurements, and geology interpreted from airborne geophysics. Polygon topology present and clean on appropriate data. Other data are line, point, or annotation data and do not require topologic relationships. This lineage was generated by the FGDC CSDGM to 19139 transformation Field work - Field work for bedrock investigations, including ridge traverses and examination of riverbank exposures, was conducted between June 16 and July 8, 1997. Field notes and rock samples were collected at approximately 700 stations throughout the Tanana A-1 and A-2 Quadrangles. Bedrock mappers recorded observations on 1:50,000- and 1:63,360-scale topographic base maps, compiled onto a 1:50,000-scale mylar map after the field season ended. Field stations were located using hand held GPS units. Field station notes and GPS location data were manually entered into a spreadsheet. 1997-01-01T00:00:00 Fieldwork - Fieldwork for surficial geologic investigations, including ridge and valley traverses, road cut 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. 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. 1997-01-01T00:00:00 Laboratory data - See paper reports PDF 98-37A and PDF 98-37B for more information. 1997-01-01T00:00:00 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. 1997-01-01T00:00:00 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. 1997-01-01T00:00:00 Source Contribution: This map contains geologic unit descriptions and outcrop locations and was used to plan traverses and help define geologic units.Source Type: paper The Rampart and Hot Springs regions 1912-01-01 publication U.S. Geological Survey Reston VA, USA publisher Eakin, H.M. originator U.S. Geological Survey Bulletin Bulletin 520 p. 271-286 1912-01-01 Source Contribution: This map contains geologic unit descriptions and outcrop locations and was used to plan traverses and help define geologic units.Source Type: paper A geologic reconnaissance of a part of the Rampart Quadrangle, Alaska 1913-01-01 publication U.S. Geological Survey Reston VA, USA publisher Eakin, H.M. originator U.S. Geological Survey Bulletin Bulletin 535 p. 38 1913-01-01 Source Contribution: This map contains geologic unit descriptions and outcrop locations and was used to plan traverses and help define geologic units.Source Type: paper Asymmetrical valleys in central Alaska (abs.) 1962-01-01 publication Geological Society of America Boulder CO, USA publisher Hopkins, D.M. originator Taber, B. originator Special Paper v. 68 p. 116 1962-01-01 Source Contribution: This report contains information that was used to aid in the creation of and sample preparation for the surficial geologic map (PDF 98-37C).Source Type: paper Compositions of placer gold in the Rampart-Eureka-Manley-Tofty area, eastern Tanana and western Livengood quadrangles, central Interior Alaska, determined by electron microprobe analysis 1997-01-01 publication State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (DGGS) Fairbanks AK, USA publisher Newberry, R.J. originator Clautice, K.H. originator http://dx.doi.org/10.14509/1813 Public Data File PDF 97-49 p. 49 1997-01-01 Source Contribution: 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).Source Type: paper The use of the Unified Soil Classification System by the Bureau of Reclamation 1957-01-01 publication 4th International Conference on Soil Mechanics and Foundation Engineering London England publisher Wagner, A.A. originator Proceedings v. I p. 125 1957-01-01 Source Contribution: This report contains information that was used to aid in the creation of and sample preparation for the surficial geologic map (PDF 98-37C).Source Type: paper Gold placers, geomorphology, and paleo-drainage of Eureka Creek and Tofty areas, Alaska 1989-01-01 publication U.S. Geological Survey Reston VA, USA publisher Yeend, W.E. originator U.S. Geological Survey Bulletin Bulletin 1946 p. 107-109 1989-01-01 otherRestrictions Metadata Access Constraints: none otherRestrictions 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. unknown 2009-03-21 This metadata was automatically generated from the FGDC Content Standard for Digital Geospatial Metadata standard (version FGDC-STD-001-1998) using the 2019-08-12T11:11:00 version of the FGDC CSDGM to ISO 19139 transform. Last Metadata Review Date: 2008-05-06 State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Metadata Manager 907-451-5039 907-451-5050 3354 College Road Fairbanks AK 99709-3707 USA 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. pointOfContact