{"action":"create","ckan_id":null,"date_created":"Sat, 14 Mar 2026 21:14:19 GMT","date_finished":null,"harvest_job_id":"be129330-b656-44ec-b4d7-f277bf7d7116","harvest_source_id":"31f41541-38a0-400b-b240-10ebcb0acd9a","id":"801f8961-9c9c-4773-82a7-46ad0f0c7636","identifier":"https://dggs.alaska.gov/webpubs/metadata/PIR2012-1B.xml","parent_identifier":null,"source_hash":"84b9adb5907bf14d112258fae69e6fc97c9d3f37b515353f4fa0481052d74cba","source_raw":"<?xml version=\"1.0\" encoding=\"UTF-8\"?><metadata><idinfo><citation><citeinfo><origin>Hubbard, T.D.</origin><origin>Reger, R.D.</origin><origin>Gallagher, P.E.</origin><pubdate>2013</pubdate><title>Engineering-geologic map of the Alaska Highway corridor, Tetlin Junction to Canada border, Alaska</title><geoform>map</geoform><serinfo><sername>Preliminary Interpretive Report</sername><issue>PIR 2012-1B</issue></serinfo><pubinfo><pubplace>Fairbanks, AK, USA</pubplace><publish>Alaska Division of Geological &amp; Geophysical Surveys</publish></pubinfo><othercit>2 sheets, scale 1:63,360.</othercit><onlink>http://dx.doi.org/10.14509/24624</onlink></citeinfo></citation><descript><abstract>During 2009, the Alaska Division of Geological &amp; Geophysical Surveys continued a program, begun in 2006, of reconnaissance mapping of surficial geology in the proposed natural-gas pipeline corridor through the upper Tanana River valley. The study area is a 12-mi-wide (19.3-km-wide) area that straddles the Alaska Highway from the western boundaries of the Tanacross B-3 and A-3 quadrangles near Tetlin Junction eastward to the eastern boundaries of the Nabesna D-1 and C-1 quadrangles along the Canada border. Mapping during 2008-2009 in the Tanacross and Nabesna quadrangles linked with the mapping completed in the Tanacross, Big Delta and Mt. Hayes quadrangles in 2006-2008. Surficial geology was initially mapped in this third corridor segment by interpreting ~1:65,000-scale, false-color, infrared aerial photographs taken in July 1978 and August 1981 and plotting unit boundaries on acetate overlays. Verification of photo mapping was accomplished during the 2008 and 2009 summer field seasons, when map units were described, soil pits were hand dug, and samples were collected for analyses. The engineering-geologic map is derived electronically from the surficial-geologic map and shows the distribution of surficial-geologic and bedrock units grouped genetically with common properties that are typically significant for engineering applications.</abstract><purpose>The Alaska Division of Geological &amp; Geophysical Surveys conducted this project, funded by the state legislature, to evaluate the geology, geohazard and material resources along the Alaska Highway corridor from Delta Junction to the Canada border. The work was completed in preparation for a proposed natural gas pipeline, so that a baseline of geologic data would be publicly available upon which preliminary decisions could be made. The work was designed to serve as the springboard for the detailed work which would be required if a pipeline were to be built along this corridor.</purpose><supplinf>Unit information and descriptions are included on each map sheet. The DGGS metadata standard extends the FGDC standard to include elements that are required to facilitate our internal data management. These elements, referred to as \"layers,\" group and describe files that have intrinsic logical or topological relationships. Attribute information for the layers (entity) is included in this metadata file under the \"Entity_and_Attribute_Information\" section. The layers are titled: &gt;border: outline shape of the study area &gt;MapUnitPolys: map unit polygons</supplinf></descript><timeperd><timeinfo><rngdates><begdate>2009</begdate><enddate>2013</enddate></rngdates></timeinfo><current>ground condition</current></timeperd><status><progress>Complete</progress><update>None planned</update></status><spdom><bounding><westbc>-142.5</westbc><eastbc>-141</eastbc><northbc>63.378</northbc><southbc>62.529</southbc></bounding></spdom><keywords><theme><themekt>ISO 19115 Topic Category</themekt><themekey>geoscientificInformation</themekey></theme><theme><themekt>Alaska Division of Geological &amp; Geophysical Surveys</themekt><themekey>Aeolian</themekey><themekey>Alaska Pipeline</themekey><themekey>Engineering</themekey><themekey>Engineering Geology</themekey><themekey>Eolian</themekey><themekey>Gasline</themekey><themekey>Geologic Map</themekey><themekey>Geology</themekey><themekey>Geologic Hazards</themekey><themekey>Landslide</themekey><themekey>Loess</themekey><themekey>Natural Gas</themekey><themekey>Permafrost</themekey><themekey>Unconsolidated Deposits</themekey><themekey>Transportation Corridor</themekey><themekey>Proposed Natural Gas Pipeline</themekey><themekey>Landslide Deposit</themekey><themekey>Retransported Loess</themekey><themekey>Hazards</themekey><themekey>Periglacial Slope Failure</themekey><themekey>Thawing Permafrost</themekey><themekey>Translational Landslide</themekey><themekey>Pipeline</themekey></theme><place><placekt>Alaska Division of Geological &amp; Geophysical Surveys</placekt><placekey>Alaska, State of</placekey><placekey>Tanana Basin</placekey><placekey>Tanana River</placekey><placekey>Taylor Highway</placekey><placekey>Nabesna Quadrangle</placekey><placekey>Tanacross Quadrangle</placekey><placekey>Canada</placekey><placekey>Northway</placekey><placekey>Northway Junction</placekey><placekey>Alaska Highway Corridor</placekey><placekey>Beaver Creek</placekey><placekey>Tetlin</placekey><placekey>Nabesna</placekey><placekey>Tetlin Junction</placekey><placekey>Midway Lake</placekey><placekey>Tetlin National Wildlife Refuge</placekey><placekey>Scottie Creek</placekey><placekey>Nabesna River</placekey><placekey>Chisana River</placekey></place><temporal><tempkt>Walker, J. D., and Geissman, J. W., compilers, 2009, Geologic Time Scale: Geological Society of America</tempkt><tempkey>Holocene</tempkey><tempkey>Pleistocene</tempkey><tempkey>Quaternary</tempkey></temporal></keywords><accconst>This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological &amp; Geophysical Surveys (see contact information below).</accconst><useconst>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. The 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 &amp; Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data 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 or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.</useconst><ptcontac><cntinfo><cntorgp><cntorg>Alaska Division of Geological &amp; Geophysical Surveys</cntorg><cntper>James Weakland</cntper></cntorgp><cntpos>GIS Analyst</cntpos><cntaddr><addrtype>mailing and physical</addrtype><address>3354 College Road</address><city>Fairbanks</city><state>AK</state><postal>99709-3707</postal><country>USA</country></cntaddr><cntvoice>(907)451-5029</cntvoice><cntvoice>(907)451-5020</cntvoice><cntemail>dggsgis@alaska.gov</cntemail><hours>8 am to 4:30 pm, Monday through Friday, except State holidays</hours></cntinfo></ptcontac><datacred>Digital cartography by: J.R. Weakland (2011, 2012), L .E. Southerland (2012), and P.E. Gallagher (2011, 2012, 2013), Reviewed by: R.A. Combellick (2010) Funding for this project is from the Alaska State FY09, FY10, and FY11 Capital Improvement Projects</datacred><native>Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcGIS 10.0.0.2414</native><crossref><citeinfo><origin>Carver, G.A.</origin><origin>Bemis, S.P.</origin><origin>Solie, D.N.</origin><origin>Castonguay, S.R.</origin><origin>Obermiller, K.E.</origin><pubdate>2010</pubdate><title>Active and potentially active faults in or near the Alaska Highway corridor, Dot Lake to Tetlin Junction, Alaska</title><geoform>document</geoform><serinfo><sername>Preliminary Interpretive Report</sername><issue>PIR 2010-1</issue></serinfo><pubinfo><pubplace>Fairbanks, AK, USA</pubplace><publish>Alaska Division of Geological &amp; Geophysical Surveys</publish></pubinfo><othercit>42 p</othercit><onlink>http://dx.doi.org/10.14509/21121</onlink></citeinfo></crossref><crossref><citeinfo><origin>Carver, G.A.</origin><origin>Bemis, S.P.</origin><origin>Solie, D.N.</origin><origin>Obermiller, K.E.</origin><pubdate>2008</pubdate><title>Active and potentially active faults in or near the Alaska Highway corridor, Delta Junction to Dot Lake, Alaska</title><geoform>document</geoform><serinfo><sername>Preliminary Interpretive Report</sername><issue>PIR 2008-3D</issue></serinfo><pubinfo><pubplace>Fairbanks, AK, USA</pubplace><publish>Alaska Division of Geological &amp; Geophysical Surveys</publish></pubinfo><othercit>32 p</othercit><onlink>http://dx.doi.org/10.14509/17901</onlink></citeinfo></crossref><crossref><citeinfo><origin>Hubbard, T.D.</origin><origin>Reger, R.D.</origin><pubdate>2010</pubdate><title>Engineering-geologic map of the Alaska Highway corridor, Robertson River to Tetlin Junction, Alaska</title><geoform>map</geoform><serinfo><sername>Preliminary Interpretive Report</sername><issue>PIR 2009-6B</issue></serinfo><pubinfo><pubplace>Fairbanks, AK, USA</pubplace><publish>Alaska Division of Geological &amp; Geophysical Surveys</publish></pubinfo><othercit>4 sheets, scale 1:63,360</othercit><onlink>http://dx.doi.org/10.14509/19742</onlink></citeinfo></crossref><crossref><citeinfo><origin>Reger, R.D.</origin><origin>Hubbard, T.D.</origin><pubdate>2010</pubdate><title>Reconnaissance interpretation of 1978-1983 permafrost, Alaska Highway corridor, Robertson River to Tetlin Junction, Alaska</title><geoform>document, map</geoform><serinfo><sername>Preliminary Interpretive Report</sername><issue>PIR 2009-6C</issue></serinfo><pubinfo><pubplace>Fairbanks, AK, USA</pubplace><publish>Alaska Division of Geological &amp; Geophysical Surveys</publish></pubinfo><othercit>13 p., 4 sheets, scale 1:63,360</othercit><onlink>http://dx.doi.org/10.14509/19743</onlink></citeinfo></crossref><crossref><citeinfo><origin>Reger, R.D.</origin><origin>Solie, D.N.</origin><pubdate>2008</pubdate><title>Engineering-geologic map, Alaska Highway corridor, Delta Junction to Dot Lake, Alaska</title><geoform>map</geoform><serinfo><sername>Preliminary Interpretive Report</sername><issue>PIR 2008-3B</issue></serinfo><pubinfo><pubplace>Fairbanks, AK, USA</pubplace><publish>Alaska Division of Geological &amp; Geophysical Surveys</publish></pubinfo><othercit>2 sheets, scale 1:63,360</othercit><onlink>http://dx.doi.org/10.14509/17981</onlink></citeinfo></crossref><crossref><citeinfo><origin>Reger, R.D.</origin><origin>Solie, D.N.</origin><pubdate>2008</pubdate><title>Reconnaissance interpretation of permafrost, Alaska Highway corridor, Delta Junction to Dot Lake, Alaska</title><geoform>document, map</geoform><serinfo><sername>Preliminary Interpretive Report</sername><issue>PIR 2008-3C</issue></serinfo><pubinfo><pubplace>Fairbanks, AK, USA</pubplace><publish>Alaska Division of Geological &amp; Geophysical Surveys</publish></pubinfo><othercit>10 p., 2 sheets, scale 1:63,360</othercit><onlink>http://dx.doi.org/10.14509/17621</onlink></citeinfo></crossref><crossref><citeinfo><origin>Reger, R.D.</origin><origin>Hubbard, T.D.</origin><origin>Carver, G.A.</origin><pubdate>2011</pubdate><title>Surficial geology of Alaska Highway corridor, Robertson River to Tetlin Junction, Alaska</title><geoform>document, map</geoform><serinfo><sername>Preliminary Interpretive Report</sername><issue>PIR 2009-6A</issue></serinfo><pubinfo><pubplace>Fairbanks, AK, USA</pubplace><publish>Alaska Division of Geological &amp; Geophysical Surveys</publish></pubinfo><othercit>53 p., 4 sheets, scale 1:63,360</othercit><onlink>http://dx.doi.org/10.14509/19741</onlink></citeinfo></crossref><crossref><citeinfo><origin>Reger, R.D.</origin><origin>Hubbard, T.D.</origin><origin>Gallagher, P.E.</origin><pubdate>2012</pubdate><title>Reconnaissance interpretation of 1978-1981 permafrost, Alaska Highway corridor, Tetlin Junction to Canada border, Alaska</title><geoform>document, map</geoform><serinfo><sername>Preliminary Interpretive Report</sername><issue>PIR 2012-1C</issue></serinfo><pubinfo><pubplace>Fairbanks, AK, USA</pubplace><publish>Alaska Division of Geological &amp; Geophysical Surveys</publish></pubinfo><othercit>27 p., 2 sheets, scale 1:63,360</othercit><onlink>http://dx.doi.org/10.14509/23444</onlink></citeinfo></crossref><crossref><citeinfo><origin>Reger, R.D.</origin><origin>Stevens, D.S.P.</origin><origin>Solie, D.N.</origin><pubdate>2008</pubdate><title>Surficial-geologic map, Delta Junction to Dot Lake, Alaska Highway corridor</title><geoform>document, map</geoform><serinfo><sername>Preliminary Interpretive Report</sername><issue>PIR 2008-3A</issue></serinfo><pubinfo><pubplace>Fairbanks, AK, USA</pubplace><publish>Alaska Division of Geological &amp; Geophysical Surveys</publish></pubinfo><othercit>48 p., 2 sheets, scale 1:63,360</othercit><onlink>http://dx.doi.org/10.14509/17961</onlink></citeinfo></crossref><crossref><citeinfo><origin>Solie, D.N.</origin><origin>Werdon, M.B.</origin><origin>Newberry, R.J.</origin><origin>Freeman, L.K.</origin><origin>Lessard, R.R.</origin><pubdate>2008</pubdate><title>Major-oxide, minor-oxide, trace-element and geochemical data from rocks collected in the Alaska Highway corridor Mount Hayes Quadrangle, Alaska in 2006 and 2007</title><geoform>document</geoform><serinfo><sername>Raw Data File</sername><issue>RDF 2008-2 v. 1.0.1</issue></serinfo><pubinfo><pubplace>Fairbanks, AK, USA</pubplace><publish>Alaska Division of Geological &amp; Geophysical Surveys</publish></pubinfo><othercit>23 p</othercit><onlink>http://dx.doi.org/10.14509/16021</onlink></citeinfo></crossref></idinfo><dataqual><attracc><attraccr>Engineering-geologic map units were derived from the surficial-geologic map. Physical properties of engineering-geologic map units are interpretive, based on extrapolation from verified localities and from previously published reports and data. Certainty in identification of the map units varies due to the scale and interpretive nature of the mapping. The geologic unit interpretations and boundaries presented in this report result from interpretation of nominal 1:65,000-scale aerial photographs as well as investigative traverses throughout the map area, aerial reconnaissance via helicopter, and examination of road-cuts and river exposures. Potential geologic hazards are inferred from the typical physical properties of map units, including sediment texture and ground-ice content, and their typical topographic settings. Except for a few test pits, no subsurface investigations or laboratory analyses were used for this publication. The reader is cautioned that this map is intended only as a general guide, and that unevaluated geologic resources and hazards may be present. Detailed geotechnical investigations should be conducted prior to utilization of any map units for engineering purposes. This map has received one technical review by a scientist familiar with the subject matter. We incorporated the reviewer's suggestions into the final draft.</attraccr></attracc><logic>Polygon topology was present and clean on the original ArcGIS geodatabase. All polygon features were topologically validated using ArcGIS prior to export to shapefile format.</logic><complete>This dataset includes shapefiles that contain information about the mapped and interpreted engineering-geologic deposits in the map area distinguishable at a scale of 1:63,360. No analytical tests were conducted for this report. The table describes engineering properties that are generally present in the mapped surficial deposits, but local variations and exceptions are most certainly to be expected. The reader is therefore cautioned that this map is intended only as a general guide, and that unevaluated geologic resources and hazards may be present. Detailed geotechnical investigations should be conducted prior to utilization of any map units for engineering purposes.</complete><posacc><horizpa><horizpar>All boundaries are inferred or approximately located. Surficial mappers recorded observations on 1:50,000 scale (nominal) color-infrared aerial photographs and 1:63,360 scale topographic base maps. We believe the total horizontal accuracy of the mapped surficial-geologic contacts is on the order of 25 m or better, with somewhat lesser accuracy expected in areas of rugged relief.</horizpar></horizpa></posacc><lineage><srcinfo><srccite><citeinfo><origin>U.S. Geological Survey</origin><pubdate>1972</pubdate><title>Tanacross A-1 Quadrangle</title><geoform>map</geoform><pubinfo><pubplace>Washington D.C.</pubplace><publish>U.S. Geological Survey</publish></pubinfo><othercit>1 Sheet</othercit></citeinfo></srccite><srcscale>63360</srcscale><typesrc>USGS topo map</typesrc><srctime><timeinfo><mdattim><sngdate><caldate>1952</caldate></sngdate><sngdate><caldate>1971</caldate></sngdate></mdattim></timeinfo><srccurr>ground condition</srccurr></srctime><srccitea>USGS Tanacross A-1, 1952- minor revisions 1971</srccitea><srccontr>base map</srccontr></srcinfo><srcinfo><srccite><citeinfo><origin>U.S. Geological Survey</origin><pubdate>1974</pubdate><title>Tanacross A-2 Quadrangle</title><geoform>map</geoform><pubinfo><pubplace>Washington D.C.</pubplace><publish>U.S. Geological Survey</publish></pubinfo><othercit>1 sheet</othercit></citeinfo></srccite><srcscale>63360</srcscale><typesrc>USGS topo map</typesrc><srctime><timeinfo><mdattim><sngdate><caldate>1955</caldate></sngdate><sngdate><caldate>1972</caldate></sngdate></mdattim></timeinfo><srccurr>ground condition</srccurr></srctime><srccitea>USGS Tanacross A-2, 1955- minor revisions 1972</srccitea><srccontr>base map</srccontr></srcinfo><srcinfo><srccite><citeinfo><origin>U.S. Geological Survey</origin><pubdate>2000</pubdate><title>Tanacross A-3 Quadrangle</title><geoform>map</geoform><pubinfo><pubplace>Washington D.C.</pubplace><publish>U.S. Geological Survey</publish></pubinfo><othercit>1 sheet</othercit></citeinfo></srccite><srcscale>63360</srcscale><typesrc>USGS topo map</typesrc><srctime><timeinfo><mdattim><sngdate><caldate>1948</caldate></sngdate><sngdate><caldate>2000</caldate></sngdate></mdattim></timeinfo><srccurr>ground condition</srccurr></srctime><srccitea>USGS Tanacross A-3, 1948- minor revisions 2000</srccitea><srccontr>base map</srccontr></srcinfo><srcinfo><srccite><citeinfo><origin>U.S. Geological Survey</origin><pubdate>1967</pubdate><title>Tanacross B-3 Quadrangle</title><geoform>map</geoform><pubinfo><pubplace>Washington D.C.</pubplace><publish>U.S. Geological Survey</publish></pubinfo><othercit>1 sheet</othercit></citeinfo></srccite><srcscale>63360</srcscale><typesrc>USGS topo map</typesrc><srctime><timeinfo><mdattim><sngdate><caldate>1949</caldate></sngdate><sngdate><caldate>1964</caldate></sngdate></mdattim></timeinfo><srccurr>ground condition</srccurr></srctime><srccitea>USGS Tanacross B-3, 1949- minor revisions 1964</srccitea><srccontr>base map</srccontr></srcinfo><srcinfo><srccite><citeinfo><origin>U.S. Geological Survey</origin><pubdate>1963</pubdate><title>Nabesna C-1 Quadrangle</title><geoform>map</geoform><pubinfo><pubplace>Washington D.C.</pubplace><publish>U.S. Geological Survey</publish></pubinfo><othercit>1 sheet</othercit></citeinfo></srccite><srcscale>63360</srcscale><typesrc>USGS topo map</typesrc><srctime><timeinfo><mdattim><sngdate><caldate>1955</caldate></sngdate><sngdate><caldate>1963</caldate></sngdate></mdattim></timeinfo><srccurr>ground condition</srccurr></srctime><srccitea>USGS Nabesna C-1, 1955- minor revisions 1963</srccitea><srccontr>base map</srccontr></srcinfo><srcinfo><srccite><citeinfo><origin>U.S. Geological Survey</origin><pubdate>1967</pubdate><title>Nabesna D-1 Quadrangle</title><geoform>map</geoform><pubinfo><pubplace>Washington D.C</pubplace><publish>U.S. Geological Survey</publish></pubinfo><othercit>1 sheet</othercit></citeinfo></srccite><srcscale>63360</srcscale><typesrc>USGS topo map</typesrc><srctime><timeinfo><mdattim><sngdate><caldate>1952</caldate></sngdate><sngdate><caldate>1967</caldate></sngdate></mdattim></timeinfo><srccurr>ground condition</srccurr></srctime><srccitea>USGS Nabesna D-1, 1952- minor revisions 1967</srccitea><srccontr>base map</srccontr></srcinfo><srcinfo><srccite><citeinfo><origin>U.S. Geological Survey</origin><pubdate>1978</pubdate><title>Nabesna D-2 Quadrangle</title><geoform>map</geoform><pubinfo><pubplace>Reston, VA</pubplace><publish>U.S. Geological Survey</publish></pubinfo><othercit>1 sheet</othercit></citeinfo></srccite><srcscale>63360</srcscale><typesrc>USGS topo map</typesrc><srctime><timeinfo><mdattim><sngdate><caldate>1955</caldate></sngdate><sngdate><caldate>1978</caldate></sngdate></mdattim></timeinfo><srccurr>ground condition</srccurr></srctime><srccitea>USGS Nabesna D-2, 1955- minor revisions 1978</srccitea><srccontr>base map</srccontr></srcinfo><srcinfo><srccite><citeinfo><origin>U.S. Geological Survey</origin><pubdate>2000</pubdate><title>Nabesna D-3 Quadrangle</title><geoform>map</geoform><pubinfo><pubplace>Reston, VA</pubplace><publish>U.S. Geological Survey</publish></pubinfo><othercit>1 sheet</othercit></citeinfo></srccite><srcscale>63360</srcscale><typesrc>USGS topo map</typesrc><srctime><timeinfo><mdattim><sngdate><caldate>1955</caldate></sngdate><sngdate><caldate>2000</caldate></sngdate></mdattim></timeinfo><srccurr>ground condition</srccurr></srctime><srccitea>USGS Nabesna D-3, 1955- minor revisions 2000</srccitea><srccontr>base map</srccontr></srcinfo><srcinfo><srccite><citeinfo><origin>Reger, R.D.</origin><origin>Hubbard, T.D.</origin><origin>Gallagher, P.E.</origin><pubdate>2012</pubdate><title>Surficial geology of the Alaska Highway corridor, Tetlin Junction to Canada border, Alaska</title><geoform>document, map</geoform><serinfo><sername>Preliminary Interpretive Report</sername><issue>PIR 2012-1A</issue></serinfo><pubinfo><pubplace>Fairbanks, AK, USA</pubplace><publish>Alaska Division of Geological &amp; Geophysical Surveys</publish></pubinfo><othercit>25 p., 2 sheets, scale 1:63,360</othercit><onlink>http://dx.doi.org/10.14509/23443</onlink></citeinfo></srccite><srcscale>63360</srcscale><typesrc>document, map</typesrc><srctime><timeinfo><sngdate><caldate>2012</caldate></sngdate></timeinfo><srccurr>publication date</srccurr></srctime><srccitea>Reger, R.D. and others, 2012</srccitea><srccontr>surficial-geologic units</srccontr></srcinfo><procstep><procdesc>Geologic unit interpretation - Surficial-geologic units were initially identified by interpretation of ~1:65,000-scale false-color infrared aerial photographs taken in July 1978 and August 1981 and locally verified by field checking in 2008, 2009, and 2010. We interpreted the physical properties of the surficial-geologic units based on extrapolation from verified localities and from previously published reports and data. We inferred the potential geologic hazards from the typical physical properties of map units, including sediment texture and ground-ice content, and their typical topographic settings.</procdesc><srcused>Reger, R.D. and others, 2012</srcused><procdate>2010</procdate></procstep><procstep><procdesc>GIS analysis and digital cartography - This map is derived electronically from the surficial-geologic map of the eastern corridor segment (Reger and others, 2012) using Geographic Information System (GIS) software. Surficial geologic units were grouped based on common properties that are typically significant for engineering applications.</procdesc><srcused>USGS Tanacross A-1, 1952- minor revisions 1971</srcused><srcused>USGS Tanacross A-2, 1955- minor revisions 1972</srcused><srcused>USGS Tanacross A-3, 1948- minor revisions 2000</srcused><srcused>USGS Tanacross B-3, 1949- minor revisions 1964</srcused><srcused>USGS Nabesna C-1, 1955- minor revisions 1963</srcused><srcused>USGS Nabesna D-1, 1952- minor revisions 1967</srcused><srcused>USGS Nabesna D-2, 1955- minor revisions 1978</srcused><srcused>USGS Nabesna D-3, 1955- minor revisions 2000</srcused><procdate>2012</procdate></procstep></lineage></dataqual><spdoinfo><direct>vector</direct></spdoinfo><spref><horizsys><planar><gridsys><gridsysn>Universal Transverse Mercator</gridsysn><utm><utmzone>7</utmzone><transmer><sfctrmer>0.999600</sfctrmer><longcm>-141</longcm><latprjo>0</latprjo><feast>500000.000000</feast><fnorth>0</fnorth></transmer></utm></gridsys><planci><plance>coordinate pair</plance><coordrep><absres>0.000001</absres><ordres>0.000001</ordres></coordrep><plandu>meters</plandu><pclname>border</pclname></planci></planar><planar><gridsys><gridsysn>Universal Transverse Mercator</gridsysn><utm><utmzone>7</utmzone><transmer><sfctrmer>0.999600</sfctrmer><longcm>-141</longcm><latprjo>0</latprjo><feast>500000.000000</feast><fnorth>0</fnorth></transmer></utm></gridsys><planci><plance>coordinate pair</plance><coordrep><absres>0.000001</absres><ordres>0.000001</ordres></coordrep><plandu>meters</plandu><pclname>MapUnitPolys</pclname></planci></planar><geodetic><horizdn>North American Datum of 1927</horizdn><ellips>North American Datum of 1927</ellips><semiaxis>6378206.4</semiaxis><denflat>294.9786982</denflat></geodetic></horizsys></spref><eainfo><detailed><enttyp><enttypl>pir2012-1b-border</enttypl><enttypd>outline shape of the study area</enttypd><enttypds>Alaska Division of Geological &amp; Geophysical Surveys</enttypds><ealname>border</ealname></enttyp></detailed><detailed><enttyp><enttypl>pir2012-1b-MapUnitPolys</enttypl><enttypd>map unit polygons</enttypd><enttypds>Alaska Division of Geological &amp; Geophysical Surveys</enttypds><ealname>MapUnitPolys</ealname></enttyp><attr><attrlabl>map_unit</attrlabl><attrdef>Map unit label shown on map and described in text. See print version of map for more detail.</attrdef><attrdefs>Alaska Division of Geological &amp; Geophysical Surveys</attrdefs><attrdomv><edom><edomv>A1</edomv><edomvd>Alluvial deposits - Qa, Qaa</edomvd><edomvds>Units Qa, Qaa from Reger, R.D., Hubbard, T.D., and Gallagher, P.E., 2012, Surficial geology of the Alaska Highway corridor, Tetlin Junction to Canada border, Alaska: Alaska Division of Geological &amp; Geophysical Surveys Preliminary Interpretive Report 2012-1A, 25 p., 2 sheets, scale 1:63,360.</edomvds></edom></attrdomv><attrdomv><edom><edomv>A2</edomv><edomvd>Alluvial deposits - Qai</edomvd><edomvds>Unit Qai in Reger, R.D., Hubbard, T.D., and Gallagher, P.E., 2012, Surficial geology of the Alaska Highway corridor, Tetlin Junction to Canada border, Alaska: Alaska Division of Geological &amp; Geophysical Surveys Preliminary Interpretive Report 2012-1A, 25 p., 2 sheets, scale 1:63,360.</edomvds></edom></attrdomv><attrdomv><edom><edomv>A3</edomv><edomvd>Alluvial deposits - Qab</edomvd><edomvds>Unit Qab in Reger, R.D., Hubbard, T.D., and Gallagher, P.E., 2012, Surficial geology of the Alaska Highway corridor, Tetlin Junction to Canada border, Alaska: Alaska Division of Geological &amp; Geophysical Surveys Preliminary Interpretive Report 2012-1A, 25 p., 2 sheets, scale 1:63,360.</edomvds></edom></attrdomv><attrdomv><edom><edomv>A4</edomv><edomvd>Alluvial deposits - Qat, Qfte</edomvd><edomvds>Units Qat, Qfte in Reger, R.D., Hubbard, T.D., and Gallagher, P.E., 2012, Surficial geology of the Alaska Highway corridor, Tetlin Junction to Canada border, Alaska: Alaska Division of Geological &amp; Geophysical Surveys Preliminary Interpretive Report 2012-1A, 25 p., 2 sheets, scale 1:63,360.</edomvds></edom></attrdomv><attrdomv><edom><edomv>A6</edomv><edomvd>Alluvial deposits - Qer</edomvd><edomvds>Units Qer in Reger, R.D., Hubbard, T.D., and Gallagher, P.E., 2012, Surficial geology of the Alaska Highway corridor, Tetlin Junction to Canada border, Alaska: Alaska Division of Geological &amp; Geophysical Surveys Preliminary Interpretive Report 2012-1A, 25 p., 2 sheets, scale 1:63,360.</edomvds></edom></attrdomv><attrdomv><edom><edomv>C</edomv><edomvd>Colluvial deposits - Qc, Qcf, Qcl</edomvd><edomvds>Units Qc, Qcf, Qcl in Reger, R.D., Hubbard, T.D., and Gallagher, P.E., 2012, Surficial geology of the Alaska Highway corridor, Tetlin Junction to Canada border, Alaska: Alaska Division of Geological &amp; Geophysical Surveys Preliminary Interpretive Report 2012-1A, 25 p., 2 sheets, scale 1:63,360.</edomvds></edom></attrdomv><attrdomv><edom><edomv>E1</edomv><edomvd>Eolian deposits - Qe</edomvd><edomvds>Units Qe in Reger, R.D., Hubbard, T.D., and Gallagher, P.E., 2012, Surficial geology of the Alaska Highway corridor, Tetlin Junction to Canada border, Alaska: Alaska Division of Geological &amp; Geophysical Surveys Preliminary Interpretive Report 2012-1A, 25 p., 2 sheets, scale 1:63,360.</edomvds></edom></attrdomv><attrdomv><edom><edomv>E2</edomv><edomvd>Eolian deposits - Qes</edomvd><edomvds>Units Qes in Reger, R.D., Hubbard, T.D., and Gallagher, P.E., 2012, Surficial geology of the Alaska Highway corridor, Tetlin Junction to Canada border, Alaska: Alaska Division of Geological &amp; Geophysical Surveys Preliminary Interpretive Report 2012-1A, 25 p., 2 sheets, scale 1:63,360.</edomvds></edom></attrdomv><attrdomv><edom><edomv>L1</edomv><edomvd>Lake deposits - Qlb, Qld</edomvd><edomvds>Units Qlb, Qld in Reger, R.D., Hubbard, T.D., and Gallagher, P.E., 2012, Surficial geology of the Alaska Highway corridor, Tetlin Junction to Canada border, Alaska: Alaska Division of Geological &amp; Geophysical Surveys Preliminary Interpretive Report 2012-1A, 25 p., 2 sheets, scale 1:63,360.</edomvds></edom></attrdomv><attrdomv><edom><edomv>H</edomv><edomvd>Manmade deposits - Qhf</edomvd><edomvds>Units Qhf in Reger, R.D., Hubbard, T.D., and Gallagher, P.E., 2012, Surficial geology of the Alaska Highway corridor, Tetlin Junction to Canada border, Alaska: Alaska Division of Geological &amp; Geophysical Surveys Preliminary Interpretive Report 2012-1A, 25 p., 2 sheets, scale 1:63,360.</edomvds></edom></attrdomv><attrdomv><edom><edomv>P</edomv><edomvd>Paludal peat deposits - P</edomvd><edomvds>Units Qp in Reger, R.D., Hubbard, T.D., and Gallagher, P.E., 2012, Surficial geology of the Alaska Highway corridor, Tetlin Junction to Canada border, Alaska: Alaska Division of Geological &amp; Geophysical Surveys Preliminary Interpretive Report 2012-1A, 25 p., 2 sheets, scale 1:63,360.</edomvds></edom></attrdomv><attrdomv><edom><edomv>B</edomv><edomvd>Bedrock and residual - b, b', b+b'</edomvd><edomvds>Units b, b', b+b' in Reger, R.D., Hubbard, T.D., and Gallagher, P.E., 2012, Surficial geology of the Alaska Highway corridor, Tetlin Junction to Canada border, Alaska: Alaska Division of Geological &amp; Geophysical Surveys Preliminary Interpretive Report 2012-1A, 25 p., 2 sheets, scale 1:63,360.</edomvds></edom></attrdomv><attrdomv><edom><edomv>lake</edomv><edomvd>location of modern lake</edomvd><edomvds>U.S. Geological Survey topographic maps: Tanacross A-1, 1952- minor revisions 1971, Tanacross A-2, 1955- minor revisions 1972, Tanacross A-3, 1948- minor revisions 2000, Tanacross B-3, 1949- minor revisions 1964, Nabesna C-1, 1955- minor revisions 1963, Nabesna D-1, 1952- minor revisions 1967, Nabesna D-2, 1955- minor revisions 1978, Nabesna D-3, 1955- minor revisions 2000</edomvds></edom></attrdomv></attr></detailed></eainfo><distinfo><distrib><cntinfo><cntorgp><cntorg>Alaska Division of Geological &amp; Geophysical Surveys</cntorg></cntorgp><cntaddr><addrtype>mailing and physical</addrtype><address>3354 College Road</address><city>Fairbanks</city><state>AK</state><postal>99709-3707</postal><country>USA</country></cntaddr><cntvoice>(907)451-5020</cntvoice><cntfax>(907)451-5050</cntfax><cntemail>dggspubs@alaska.gov</cntemail><hours>8 am to 4:30 pm, Monday through Friday, except State holidays</hours><cntinst>Please view our website (http://www.dggs.alaska.gov) for the latest information on available data. 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