Twelker, Evan Hubbard, T.D. Wypych, Alicja Sicard, K.R. Newberry, R.J. Reioux, D.A. Freeman, L.K. Lande, L.L. 2015 report and digital data Preliminary Interpretive Report PIR 2015-6 Fairbanks, Alaska, United States Alaska Division of Geological & Geophysical Surveys 16 p., 1 sheet, scale 1:50,000. http://dx.doi.org/10.14509/29470 The Alaska Division of Geological & Geophysical Surveys (DGGS), in partnership with the U.S. National Cooperative Geologic Mapping Program, mapped approximately 450 mi2 of the Talkeetna Mountains region of central Alaska at 1:50,000 scale over the course of six weeks in 2014. This area contains significant exposures of Late Triassic mafic volcanics and gabbro sills that have been the focus of region-wide exploration for the Strategic and Critical platinum-group elements (PGEs). The area also exposes numerous inactive and possibly active faults which project through the area of proposed hydropower development. The resulting geologic map offers an improved understanding of the geology, structural history, and mineral potential of the area. The Alaska Division of Geological and Geophysical Surveys (DGGS) initiated a multi-year project to improve the understanding of mineral potential in western Wrangellia. The project began in 2013 with acquisition of magnetic and electromagnetic (EM) geophysical data over unsurveyed portions of the terrane in the Clearwater and Talkeetna Mountains. DGGS geologists completed a three week field program of geologic mapping, rock, and stream sediment sampling in 2013, and followed up with 1:50,000-scale mapping of the Talkeetna Mountains C-4 Quadrangle during the 2014 field season. >border: A polygon that encompasses the geographic extent of the data observations. >ContactsAndFaults: Line features depicting faults and geologic contacts >DataSourcePolys: Polygons that delineate data sources for various parts of the map >FossilPoints: Fossil location points >GeochronPoints: Geochronology sample location points >GeologicLines: Dikes, coal seams, ash beds, glacial features, anticline and syncline hinge-surface traces, and other kinds of key beds that do not participate in map-unit topology >MapUnitPolys: Polygons that record the distribution of mapped or interpreted geologic units >OrientationPoints: A point file that provides field station locations, symbology, and associated structure data (bedding attitudes, foliation attitudes, slip vectors measured at a point, etc.) >Stations: A point file that provides location information, observations, and other data specific to each field observation station. 2013 2014 ground condition complete None planned -149.024852 -148.355520 62.757514 62.348564 ISO 19115 Topic Category geoscientificInformation Alaska Division of Geological & Geophysical Surveys 40Ar/39Ar Aerial Geology Aerial Photography Alluvial Alluvial Deposits Amphibolite Facies Units Bedrock Geologic Map Bedrock Geology Brachiopods Colluvial Deposits Cordilleran Ice Sheet Crinoids Esker Faulting Faults Floodplain Fluvial Fossils Geochronology Geologic Map Geologic Materials Geomorphology Glacial Glacial Deposits Glacial Drift Glacial Geology Glacial Geomorphology Glacial History Glacial Lake Glacial Processes Glacial Stratigraphy Glaciation Ice Contact Deposits Ice-Contact Lacustrine Lacustrine Sedimentation Landslide Landslide Deposit Outwash Outwash Fan Paleochannel Permafrost and Periglacial Remote Sensing Rock Glaciers Rock-Glacier Deposits Rockfall STATEMAP Project Sand and Gravel Slides Slope Instability Soil Creep Surficial Surficial Geologic Map Surficial Geology Till Alaska Division of Geological & Geophysical Surveys Cleary Creek Iron Creek Stephan Lake Talkeetna Mountains Talkeetna Mountains Quadrangle Talkeetna River Alaska Division of Geological & Geophysical Surveys Kahiltna Terrane Skolai Group Slana Spur Formation Station Creek Formation Wrangellia Terrane Walker, J.D., Geissman, J.W., Bowring, S.A, and Babcock, L.E., comp., 2012, Geologic Time Scale v. 4.0: Geological Society of America Cenozoic Cretaceous Eocene Jurassic Late Triassic Mesozoic Paleocene Paleogene Paleozoic Pennsylvanian Permian Pleistocene Quaternary This report, map, and/or dataset is 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. 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 & 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. Alaska Division of Geological & Geophysical Surveys GIS Manager mailing and physical

3354 College Road

Fairbanks AK 99709-3707 USA (907)451-5020 dggsgis@alaska.gov 8 am to 4:30 pm, Monday through Friday, except State holidays This project is jointly funded by the State's Strategic and Critical Minerals Assessment program (part of the Airborne Geological/Geophysical Mineral Inventory [AGGMI]) and the USGS National Cooperative Geologic Mapping Program, STATEMAP component, under award number G14AC00167 for 2014. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government. We acknowledge Cook Inlet Region Inc. (CIRI), Chickaloon Moose Creek Native Association, Knikatnu, Ninilchik Natives Association, Salamatof Native Association, Seldovia Native Association, and Tyonek Native Corporation for supporting the project and providing access to private lands in the mapping area. Brenda Becker of the Bureau of Land Management (BLM) Glennallen Field Office assisted us with permitting on BLM-managed lands. We thank Peter Oswald, Jeanine Schmidt, Melanie Werdon, Ben Porterfield, David Adams, Laurel Burns, Ken Ridgway, and others for geological discussions that helped us prepare for the field and understand our results when we returned. Jeff Benowitz and Paul Layer of the University of Alaska Fairbanks (UAF) Geochronology Lab provided 40Ar/39Ar analyses and assisted us in their interpretation, and Ken Severin of the UAF Advanced Instrumentation Laboratory assisted us with the microprobe. Scott Arko of the UAF Alaska Satellite Facility furnished us with orthorectified areal imagery. We appreciate the attempts of Paul O'Sullivan and GeoSep Services to recover zircons from some of our undated map units. Robert Blodgett provided us with fossil identifications and supporting discussions. Melanie Werdon and De Anne Stevens gave timely and constructive reviews. We appreciate the warm hospitality and logistical support of Jessi Braga and Stephan Lake Lodge, and we thank Alpine Air Alaska pilots Martin Hoessinger and Jared Berman for skilled and safe flying. Benowitz, J.A. Layer, P.W. Wypych, Alicja Twelker, Evan 2015 Raw Data File RDF 2015-10 Fairbanks, Alaska, United States Alaska Division of Geological & Geophysical Surveys 19 p http://dx.doi.org/10.14509/29454 Benowitz, J.A. Layer, P.W. Twelker, Evan 2014 Raw Data File RDF 2014-18 Fairbanks, Alaska, United States Alaska Division of Geological & Geophysical Surveys 10 p http://dx.doi.org/10.14509/29119 Twelker, Evan Bachmann, E.N. Freeman, L.K. Newberry, R.J. Reioux, D.A. Sicard, K.R. Tuzzolino, A.L. Wright, T.C. Wypych, Alicja 2014 Raw Data File RDF 2014-3 Fairbanks, Alaska, United States Alaska Division of Geological & Geophysical Surveys 6 p http://dx.doi.org/10.14509/27181 Twelker, Evan Newberry, R.J. Freeman, L.K. Sicard, K.R. Reioux, D.A. Bachmann, E.N. 2013 Poster and Presentation Twelker, Evan and others, 2013 Fairbanks, Alaska, United States Alaska Division of Geological & Geophysical Surveys 25 p http://dx.doi.org/10.14509/26821 Twelker, Evan Wypych, Alicja Sicard, K.R. Newberry, R.J. Freeman, L.K. Reioux, D.A. Lande, Lauren 2014 Poster and Presentation Twelker, Evan and others, 2014 Fairbanks, Alaska, United States Alaska Division of Geological & Geophysical Surveys 28 p http://dx.doi.org/10.14509/29160 Twelker, Evan Wypych, Alicja Newberry, R.J. 2014 Poster and Presentation Twelker, Evan and others, 2014 Fairbanks, Alaska, United States Alaska Division of Geological & Geophysical Surveys 1 sheet http://dx.doi.org/10.14509/29139 Twelker, Evan Burns, L.E. 2014 Poster and Presentation Twelker, Evan and Burns, L.E., 2014 Fairbanks, Alaska, United States Alaska Division of Geological & Geophysical Surveys 34 p http://dx.doi.org/10.14509/27284 Wypych, Alicja Twelker, Evan Freeman, L.K. Lande, Lauren Newberry, R.J. Reioux, D.A. Sicard, K.R. 2014 Raw Data File RDF 2014-22 Fairbanks, Alaska, United States Alaska Division of Geological & Geophysical Surveys 4 p http://dx.doi.org/10.14509/29140 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 map result from interpretation of false-color infrared aerial photographs, investigative traverses throughout the map area, aerial reconnaissance via helicopter, examination of exposures, geochemistry and geochronology analysis, and interpretation of geophysical survey data. The air-photo interpretations were adjusted as needed to be consistent with bedrock exposures identified by field geologists. Per NCGMP09 (USGS National Cooperative Geologic Mapping Program - Draft Standard Format for Digital Publication of Geologic Maps) specifications, the authors have assigned a confidence value to each polygon and line segment to indicate their degree of confidence in the positioning and identification of the element at the mapped scale. This publication is a PRELIMINARY INTERPRETIVE REPORT and is meant to allow rapid release of field observations or initial interpretations of geology or analytical data. It has not undergone formal peer review. Interpretations or conclusions contained in this publication are subject to change. Polygon topology was implemented per NCGMP09 specifications (polygons must not overlap, polygons must not have gaps, boundaries must be overlain by lines in ContactsAndFaults). All polygon features were topologically validated using ArcGIS for Desktop prior to export to shapefile format. This report and digital dataset provides information about geologic features that can be identified or interpreted at a scale of 1:50,000. Relative to preexisting mapping, it offers an improved understanding of the geology, structural history, and mineral potential of the area. However, significant additional work would be required to fully resolve uncertainties in our interpretations. Mappers recorded observations on 1:63,360 scale (nominal) color-infrared aerial photographs and 1:63,360 scale USGS topographic base maps. The authors believe the total horizontal accuracy of directly observed mapped geologic contacts is on the order of 25 m or better, with somewhat lesser accuracy expected in areas of rugged relief. Per NCGMP09 specifications, the authors have assigned a confidence value to each polygon, line, or point to indicate their degree of confidence in the positioning and identification of the element at the mapped scale. Waterlines and waterbody polygons were entirely derived from topographic base maps, consequently it is possible that the mapped location and extent of these features may differ from modern ground conditions. Burns, L.E. Geoterrex-Dighem WGM, Inc. Emond, A.M. Graham, G.R.C. 2014 Geophysical Report GPR 2014-6 Fairbanks, Alaska, United States Alaska Division of Geological & Geophysical Surveys http://dx.doi.org/10.14509/27360 digital data 2014 publication date Burns, L.E. and others, 2014 bedrock geologic interpretation Clautice, K.H. Newberry, R.J. Blodgett, R.B. Bundtzen, T.K. Gage, B.G. Harris, E.E. Liss, S.A. Miller, M.L. Reifenstuhl, R.R. Clough, J.G. Pinney, D.S. 2001 Report of Investigation RI 2001-1A Fairbanks, Alaska, United States Alaska Division of Geological & Geophysical Surveys 31 p., 1 sheet, scale 1:63,360 http://dx.doi.org/10.14509/2768 63360 paper 2001 publication date Clautice, K.H. and others, 2001 bedrock geologic interpretation Schmidt, J.M. Werdon, M.B. Wardlaw, Bruce 2003 Professional Report PR 120J Fairbanks, Alaska, United States Alaska Division of Geological & Geophysical Surveys p. 101-108 http://dx.doi.org/10.14509/2917 paper 2003 publication date Schmidt, J.M. and others, 2003, p. 101-108 bedrock geologic interpretation Werdon, M.B. Riehle, J.R. Schmidt, J.M. Newberry, R.J. Pessel, G.H. 2002 Preliminary Interpretive Report PIR 2002-4 Fairbanks, Alaska, United States Alaska Division of Geological & Geophysical Surveys 1 sheet, scale 1:63,360 http://dx.doi.org/10.14509/7144 63360 paper 2002 publication date Werdon, M.B. and others, 2002 bedrock geologic interpretation Bedrock geologic interpretation - In 2014, Alaska Division of Geological & Geophysical Surveys (DGGS) bedrock geologists traversed and collected rock samples throughout a 450-square-mile area about 50 miles east of the town of Talkeetna. This work was integrated with findings from 2013 fieldwork in the western Wrangellia terrane, geophysical surveys of the area, and with existing literature and unpublished DGGS mapping conducted during the mid-80s. Geologists observed details about the variations in texture, lithology and orientation of the map units and collected rock samples, noted outcrop descriptions, and conducted structural measurements. Selected samples were submitted for geochronologic and geochemical analysis and the results were used to further interpret the stratigraphic and structural history of the map area. A complete list of references can be found in the accompanying report. Burns, L.E. and others, 2014 Clautice, K.H. and others, 2001 Schmidt, J.M. and others, 2003, p. 101-108 Werdon, M.B. and others, 2002 2014 Surficial geologic interpretation - Reconnaissance surficial geologic field work was conducted during the summer of 2014. Observations of river banks and deposits, debris flow deposits, glacial deposits and features, and lake and swamp deposits were recorded for use during subsequent interpretation of false-color infrared aerial photographs. 2014 Digitization of geologic map data - Field observations and rock sample descriptions were compiled into an ArcGIS geodatabase. The observation records were organized and attributed according to the NCGMP09 geodatabase standard. Bedrock point data of locations of structural observations (strike, dip, cleavage, jointing, etc.) were intersected with the surficial-geologic polygons 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 polygons to be areas of bedrock exposure. Waterbody lines and polygons were digitized from the underlying topographic base-maps and incorporated into the geodatabase. 2015 vector Universal Transverse Mercator 6 0.999600 -147 0 500000.000000 0 coordinate pair .00000001 .00000001 Meters North American Datum of 1927 Clarke 1866 6378206.4 294.9786982 pir2015-6-border.shp A polygon that encompasses the geographic extent of the data observations. Alaska Division of Geological & Geophysical Surveys border pir2015-6-ContactsAndFaults.shp Line features depicting faults and geologic contacts Alaska Division of Geological & Geophysical Surveys and the NCGMP09 - Draft Standard Format for Digital Publication of Geologic Maps, Version 1.1 by the USGS National Cooperative Geologic Mapping Program (NCGMP), note that all field names were derived from the standard but truncated at ten characters. ContactsAndFaults Type Specifies the kind of feature represented by the line Alaska Division of Geological & Geophysical Surveys The line features are: Fault, Surficial Contact, Contact, and Inferred thrust fault IsConceale This is a flag to identify contacts and faults covered by an overlying map unit. Alaska Division of Geological & Geophysical Surveys N The feature IS NOT covered by an overlying map unit. Alaska Division of Geological & Geophysical Surveys Y The feature IS covered by an overlying map unit. Alaska Division of Geological & Geophysical Surveys ExistenceC Indicates the degree of confidence and/or certainty in the interpretation of a each line segment's existence. Alaska Division of Geological & Geophysical Surveys Certain Indicates that the author has sufficient observational and/or other supporting data to be reasonably confident in the scientific credibility of the interpretation of the feature. The level of certainty is specific to the map scale. Alaska Division of Geological & Geophysical Surveys Questionable The interpretation of the feature at the mapped scale fits the overall proposed geologic model but the extent and/or classification is questionable or uncertain due to insufficient observations and/or supporting data. Alaska Division of Geological & Geophysical Surveys IdentityCo Indicates degree of confidence in the identification and classification of the line segment. Alaska Division of Geological & Geophysical Surveys Certain Indicates that the author has sufficient observational and/or other supporting data to be reasonably confident in the scientific credibility of the interpretation of the feature. The level of certainty is specific to the map scale. Alaska Division of Geological & Geophysical Surveys Questionable The interpretation of the feature at the mapped scale fits the overall proposed geologic model but the extent and/or classification is questionable or uncertain due to insufficient observations and/or supporting data. Alaska Division of Geological & Geophysical Surveys LocationCo Half-width in meters of positional uncertainty envelope; position is relative to other features in the data. A value of -9 indicates that this measure is not available. Alaska Division of Geological & Geophysical Surveys 10 250 meters Symbol References the symbol value that was assigned to the line segment. Alaska Division of Geological & Geophysical Surveys FGDC Digital Cartographic Standard for Geologic Map Symbolization; Appendix A. Geologic map symbols, colors, and patterns, "REF NO" field Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. Label Formal name of selected features. Alaska Division of Geological & Geophysical Surveys The labeled features are: SLOT LAKE FAULT, CENTRAL RAINGELLIA FAULT, and RANGE FRONT FAULT Notes Free text for additional information about the feature. Alaska Division of Geological & Geophysical Surveys The notes indicate the basis of the feature interpretation: "Inferred from SDMI IfSAR orthorectified radar intensity image", "Adapted from Adams and others (1985; unpublished) Plate 1", "Adapted from Oswald (2006) Map B", "Break in 900Hz EM", "Location inferred from airborne magnetic survey", and "Location inferred from airborne resistivity survey" pir2015-6-DataSourcePolys.shp Polygons that delineate data sources for various parts of the map Alaska Division of Geological & Geophysical Surveys and the NCGMP09 - Draft Standard Format for Digital Publication of Geologic Maps, Version 1.1 by the USGS National Cooperative Geologic Mapping Program (NCGMP), note that all field names were derived from the standard but truncated at ten characters. DataSourcePolys Notes Free text for additional information about the feature. Alaska Division of Geological & Geophysical Surveys The notes indicate the basis of the feature interpretation: "Oswald, 2006 (Map B)", "Adams and others, 1985 (unpublished) (Plate 2)", "Rose, 1967 (GR 32)", "Amos and Cole, 2001 (Map B)", "Oswald, 2006 (Map A)", "Adams and others, 1985 (unpublished) (Plate 1)", and "Van Wyck, 2006 (Figure 6)" pir2015-6-FossilPoints.shp Fossil location points Alaska Division of Geological & Geophysical Surveys and the NCGMP09 - Draft Standard Format for Digital Publication of Geologic Maps, Version 1.1 by the USGS National Cooperative Geologic Mapping Program (NCGMP), note that all field names were derived from the standard but truncated at ten characters. FossilPoints StationID Identifier assigned by person who originally located station Alaska Division of Geological & Geophysical Surveys Generic example of a sample identifier: YYYYAAA9999X: YY or YYYY= year, AAA=geologist's initials (one to three characters), 9999=unique station number, X= optional alpha character which indicates that multiple samples were collected at a given location or that multiple observations were recorded in the project database. Label Text string to display along with station symbol Alaska Division of Geological & Geophysical Surveys free text that is intended to display adjacent to the label point on the map MaterialAn Material analyzed Alaska Division of Geological & Geophysical Surveys free text description of the rock sample; transcribed from geologists' field notes PlotAtScal The scale at which the observation should be plotted Alaska Division of Geological & Geophysical Surveys 50000 50000 LocationCo Radius in meters of positional uncertainty envelope Alaska Division of Geological & Geophysical Surveys 10 10 meters FossilForm Information about the type or form of the fossil Alaska Division of Geological & Geophysical Surveys free text description of the fossil FossilAge Information about the age of the fossil this study (R.B. Blodgett) free text description of the fossil age Notes Free text for additional information about the feature Alaska Division of Geological & Geophysical Surveys The notes indicate the source of the feature interpretation: " and "this study (R.B. Blodgett)" pir2015-6-GeochronPoints.shp Geochronology sample location points Alaska Division of Geological & Geophysical Surveys and the NCGMP09 - Draft Standard Format for Digital Publication of Geologic Maps, Version 1.1 by the USGS National Cooperative Geologic Mapping Program (NCGMP), note that all field names were derived from the standard but truncated at ten characters. GeochronPoints Type The geochronology method used to provide the age value Alaska Division of Geological & Geophysical Surveys The samples were analyzed by: ArAr StationID Identifier assigned by person who originally located station Alaska Division of Geological & Geophysical Surveys Generic example of a sample identifier: YYYYAAA9999X: YY or YYYY= year, AAA=geologist's initials (one to three characters), 9999=unique station number, X= optional alpha character which indicates that multiple samples were collected at a given location or that multiple observations were recorded in the project database. MapUnit Short ASCII string that indicates the map unit. Alaska Division of Geological & Geophysical Surveys Khg HORNBLENDE GABBRO (Cretaceous) Alaska Division of Geological & Geophysical Surveys PPva ALTERED METAVOLCANIC ROCKS (Pennsylvanian to Permian) Alaska Division of Geological & Geophysical Surveys Trg1 GABBRO, AFFILIATED WITH UNIT Trn1 (Late Triassic) Alaska Division of Geological & Geophysical Surveys Trr1 LOWER RHYOLITE (Tertiary) Alaska Division of Geological & Geophysical Surveys Jgd GRANODIORITE TO TONALITE (Middle Jurassic) Alaska Division of Geological & Geophysical Surveys Kg GRANITIC ROCKS (Late Cretaceous) Alaska Division of Geological & Geophysical Surveys Kdp DACITE PORPHYRY (Late Cretaceous) Alaska Division of Geological & Geophysical Surveys Ttap ANDESITE PORPHYRY (Tertiary) Alaska Division of Geological & Geophysical Surveys JPza AMPHIBOLITE (Late Paleozoic to Early Jurassic) Alaska Division of Geological & Geophysical Surveys Tsdp DACITE PORPHYRY (Tertiary) Alaska Division of Geological & Geophysical Surveys Tsb BASALT FLOWS (Tertiary) Alaska Division of Geological & Geophysical Surveys Tril INTERLAYERED UNIT (Tertiary) Alaska Division of Geological & Geophysical Surveys TrPs METASEDIMENTARY ROCKS (Pennsylvanian to Triassic) Alaska Division of Geological & Geophysical Surveys Label Text string to display along with symbol Alaska Division of Geological & Geophysical Surveys free text that is intended to display adjacent to the label point on the map MaterialAn Material analyzed Alaska Division of Geological & Geophysical Surveys free text description of the rock sample; transcribed from geologists' field notes PlotAtScal The scale at which the observation should be plotted Alaska Division of Geological & Geophysical Surveys 50000 50000 LocationCo Radius in meters of positional uncertainty envelope Alaska Division of Geological & Geophysical Surveys 10 10 meters Age The interpreted (preferred) age calculated from geochronology analysis Alaska Division of Geological & Geophysical Surveys 21.6 223 MA (million years ago) AgePlusErr Error associated with the age value Alaska Division of Geological & Geophysical Surveys 0.2 4 MA (million years ago) AgeMinusEr Error associated with the age value Alaska Division of Geological & Geophysical Surveys 0.2 4 Ma (million years ago) AgeUnits Units for numeric values in the age and age error fields. Alaska Division of Geological & Geophysical Surveys Ma million years ago Alaska Division of Geological & Geophysical Surveys Notes Free text for additional information about the feature. Alaska Division of Geological & Geophysical Surveys The notes indicate the source of the feature interpretation: "Benowitz and others, 2015", "Oswald, 2006", and "Benowitz and others, 2014" pir2015-6-GeologicLines.shp Dikes, coal seams, ash beds, glacial features, anticline and syncline hinge-surface traces, and other kinds of key beds that do not participate in map-unit topology Alaska Division of Geological & Geophysical Surveys and the NCGMP09 - Draft Standard Format for Digital Publication of Geologic Maps, Version 1.1 by the USGS National Cooperative Geologic Mapping Program (NCGMP), note that all field names were derived from the standard but truncated at ten characters. GeologicLines Type Specifies the kind of feature represented by the line Alaska Division of Geological & Geophysical Surveys The line features are: Syncline, Anticline, BasaltDike, IntermediateDike, Esker, and Moraine IsConceale This is a flag to identify contacts and faults covered by an overlying map unit. Alaska Division of Geological & Geophysical Surveys N The feature IS NOT covered by an overlying map unit. Alaska Division of Geological & Geophysical Surveys ExistenceC Indicates the degree of confidence and/or certainty in the interpretation of a each line segment's existence. Alaska Division of Geological & Geophysical Surveys Certain Indicates that the author has sufficient observational and/or other supporting data to be reasonably confident in the scientific credibility of the interpretation of the feature. The level of certainty is specific to the map scale. Alaska Division of Geological & Geophysical Surveys IdentityCo Indicates degree of confidence in the identification and classification of the line segment. Alaska Division of Geological & Geophysical Surveys Certain Indicates that the author has sufficient observational and/or other supporting data to be reasonably confident in the scientific credibility of the interpretation of the feature. The level of certainty is specific to the map scale. Alaska Division of Geological & Geophysical Surveys LocationCo Half-width in meters of positional uncertainty envelope; position is relative to other features in the data. A value of -9 indicates that this measure is not available. Alaska Division of Geological & Geophysical Surveys 50 250 meters Symbol References the symbol value that was assigned to the line segment. Alaska Division of Geological & Geophysical Surveys FGDC Digital Cartographic Standard for Geologic Map Symbolization; Appendix A. Geologic map symbols, colors, and patterns, "REF NO" field Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. pir2015-6-MapUnitPolys.shp Polygons that record the distribution of mapped or interpreted geologic units Alaska Division of Geological & Geophysical Surveys and the NCGMP09 - Draft Standard Format for Digital Publication of Geologic Maps, Version 1.1 by the USGS National Cooperative Geologic Mapping Program (NCGMP), note that all field names were derived from the standard but truncated at ten characters. MapUnitPolys MapUnit Short ASCII string that indicates the map unit. Alaska Division of Geological & Geophysical Surveys JPza AMPHIBOLITE (Late Paleozoic to Early Jurassic) Alaska Division of Geological & Geophysical Surveys JPzog ORTHOGNEISS (Late Paleozoic to Early Jurassic) Alaska Division of Geological & Geophysical Surveys JPzpg PARAGNEISS (Late Paleozoic to Early Jurassic) Alaska Division of Geological & Geophysical Surveys Jgd GRANODIORITE TO TONALITE (Middle Jurassic) Alaska Division of Geological & Geophysical Surveys KJmf METAFLYSCH (Late Jurassic to Early Cretaceous) Alaska Division of Geological & Geophysical Surveys Kdp DACITE PORPHYRY (Late Cretaceous) Alaska Division of Geological & Geophysical Surveys Kg GRANITIC ROCKS (Late Cretaceous) Alaska Division of Geological & Geophysical Surveys Khg HORNBLENDE GABBRO (Cretaceous) Alaska Division of Geological & Geophysical Surveys PPfv FELSIC METAVOLCANIC ROCKS (Pennsylvanian to Permian) Alaska Division of Geological & Geophysical Surveys PPmv MAFIC TO INTERMEDIATE METAVOLCANIC ROCKS (Pennsylvanian to Permian) Alaska Division of Geological & Geophysical Surveys PPva ALTERED METAVOLCANIC ROCKS (Pennsylvanian to Permian) Alaska Division of Geological & Geophysical Surveys Pl LIMESTONE AND MARBLE (Late Permian) Alaska Division of Geological & Geophysical Surveys Qa UNDIFFERENTIATED FLOODPLAIN ALLUVIUM Alaska Division of Geological & Geophysical Surveys Qaa ACTIVE-FLOODPLAIN ALLUVIUM Alaska Division of Geological & Geophysical Surveys Qaf ALLUVIAL-FAN DEPOSITS Alaska Division of Geological & Geophysical Surveys Qai INACTIVE-FLOODPLAIN ALLUVIUM Alaska Division of Geological & Geophysical Surveys Qc UNDIFFERENTIATED COLLUVIUM Alaska Division of Geological & Geophysical Surveys Qcd DEBRIS-FLOW DEPOSITS Alaska Division of Geological & Geophysical Surveys Qcf MIXED COLLUVIUM AND ALLUVIUM Alaska Division of Geological & Geophysical Surveys Qcg ROCK GLACIER DEPOSITS Alaska Division of Geological & Geophysical Surveys Qct TALUS Alaska Division of Geological & Geophysical Surveys Qgd1 DRIFT OF EARLY WISCONSINAN AGE (75,000 TO 40,000 Y.B.P.) Alaska Division of Geological & Geophysical Surveys Qgd2 DRIFT OF LATE WISCONSINAN AGE, UNDIFFERENTIATED (25,000 TO 11,000 Y.B.P.) Alaska Division of Geological & Geophysical Surveys Qgd3 TILL AND ASSOCIATED MORAINAL DEPOSITS OF LATEST WISCONSINAN AGE (11,000 TO 9,000 Y.B.P.) Alaska Division of Geological & Geophysical Surveys Qgds1 ICE STAGNATION TILL OF EARLY WISCONSINAN AGE (75,000 TO 40,000 Y.B.P.) Alaska Division of Geological & Geophysical Surveys Qgds3 ICE STAGNATION TILL OF LATEST WISCONSINAN AGE (11,000 TO 9,000 YEARS BEFORE PRESENT [Y.B.P.]) Alaska Division of Geological & Geophysical Surveys Qgf2 OUTWASH OF LATE WISCONSINAN AGE, UNDIFFERENTIATED Alaska Division of Geological & Geophysical Surveys Qgf3 OUTWASH OF LATEST WISCONSINAN AGE Alaska Division of Geological & Geophysical Surveys Ql LACUSTRINE DEPOSITS Alaska Division of Geological & Geophysical Surveys Qld LAKE DELTA DEPOSITS Alaska Division of Geological & Geophysical Surveys Qp SWAMP DEPOSITS Alaska Division of Geological & Geophysical Surveys Tdb BASALT (Tertiary) Alaska Division of Geological & Geophysical Surveys TrPs METASEDIMENTARY ROCKS (Pennsylvanian to Triassic) Alaska Division of Geological & Geophysical Surveys Trg GABBRO (Late Triassic) Alaska Division of Geological & Geophysical Surveys Trg1 GABBRO, AFFILIATED WITH UNIT Trn1 (Late Triassic) Alaska Division of Geological & Geophysical Surveys Trg2 GABBRO, AFFILIATED WITH UNIT Trn2 (Late Triassic) Alaska Division of Geological & Geophysical Surveys Tril INTERLAYERED UNIT (Tertiary) Alaska Division of Geological & Geophysical Surveys Triv INTERMEDIATE VOLCANICLASTIC ROCKS (Tertiary) Alaska Division of Geological & Geophysical Surveys Trl LIMESTONE AND MARBLE (Late Triassic) Alaska Division of Geological & Geophysical Surveys Trn1 NIKOLAI GREENSTONE, LOWER MEMBER (Late Triassic) Alaska Division of Geological & Geophysical Surveys Trn2 NIKOLAI GREENS TONE, UPPER MEMBER (Late Triassic) Alaska Division of Geological & Geophysical Surveys Trr1 LOWER RHYOLITE (Tertiary) Alaska Division of Geological & Geophysical Surveys Trr2 UPPER RHYOLITE (Tertiary) Alaska Division of Geological & Geophysical Surveys Trrp RHYOLITE PORPHYRY (Tertiary) Alaska Division of Geological & Geophysical Surveys Trsv METASEDIMENTARY AND METAVOLCANIC ROCKS (Late Triassic) Alaska Division of Geological & Geophysical Surveys Tsa ANDESITE FLOWS (Tertiary) Alaska Division of Geological & Geophysical Surveys Tsb BASALT FLOWS (Tertiary) Alaska Division of Geological & Geophysical Surveys Tsd DACITE (Tertiary) Alaska Division of Geological & Geophysical Surveys Tsdp DACITE PORPHYRY (Tertiary) Alaska Division of Geological & Geophysical Surveys Tsr RHYOLITE (Tertiary) Alaska Division of Geological & Geophysical Surveys Tta ANDESITE FLOWS (Tertiary) Alaska Division of Geological & Geophysical Surveys Ttap ANDESITE PORPHYRY (Tertiary) Alaska Division of Geological & Geophysical Surveys Ttb BASALT FLOWS (Tertiary) Alaska Division of Geological & Geophysical Surveys Ttd DACITE FLOWS (Tertiary) Alaska Division of Geological & Geophysical Surveys Water polygon is a waterbody Alaska Division of Geological & Geophysical Surveys IdentityCo Indicates degree of confidence in the identification and classification of the feature. Alaska Division of Geological & Geophysical Surveys Certain Indicates that the author has sufficient observational and/or other supporting data to be reasonably confident in the scientific credibility of the interpretation of the feature. The level of certainty is specific to the map scale. Alaska Division of Geological & Geophysical Surveys Questionable The interpretation of the feature at the mapped scale fits the overall proposed geologic model but the extent and/or classification is questionable or uncertain due to insufficient observations and/or supporting data. Alaska Division of Geological & Geophysical Surveys Label The label values provide the FGDCGeoAge font characters that are required to display the geologic symbols that are appropriate to the map unit assigned in the corresponding MapUnit field. Alaska Division of Geological & Geophysical Surveys NULL not applicable Alaska Division of Geological & Geophysical Surveys FGDCGeoAge font Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. Symbol References the CMYK color value that was assigned to the map unit Alaska Division of Geological & Geophysical Surveys 0AX0 CMYK value - C:0%, M:8%, Y:100%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 00X0 CMYK value - C:0%, M:0%, Y:100%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 0A40 CMYK value - C:0%, M:8%, Y:40%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 0060 CMYK value - C:0%, M:0%, Y:60%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 0A60 CMYK value - C:0%, M:8%, Y:60%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 0150 CMYK value - C:0%, M:13%, Y:50%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 01X0 CMYK value - C:0%, M:13%, Y:100%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 0030 CMYK value - C:0%, M:0%, Y:30%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 0020 CMYK value - C:0%, M:0%, Y:20%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 0040 CMYK value - C:0%, M:0%, Y:40%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 0050 CMYK value - C:0%, M:0%, Y:50%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 0A50 CMYK value - C:0%, M:8%, Y:50%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 0010 CMYK value - C:0%, M:0%, Y:13%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 0070 CMYK value - C:0%, M:0%, Y:70%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 2XX0 CMYK value - C:20%, M:100%, Y:100%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. X160 CMYK value - C:100%, M:13%, Y:60%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 3X60 CMYK value - C:30%, M:100%, Y:60%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 3X40 CMYK value - C:30%, M:100%, Y:40%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 3XA0 CMYK value - C:30%, M:100%, Y:8%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. X360 CMYK value - C:100%, M:30%, Y:60%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. X530 CMYK value - C:100%, M:50%, Y:30%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. X440 CMYK value - C:100%, M:40%, Y:40%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 0500 CMYK value - C:0%, M:50%, Y:0%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 17X0 CMYK value - C:13%, M:70%, Y:100%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 13X0 CMYK value - C:13%, M:30%, Y:100%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 62A0 CMYK value - C:60%, M:20%, Y:8%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 2000 CMYK value - C:20%, M:0%, Y:0%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 50A0 CMYK value - C:50%, M:0%, Y:8%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 0550 CMYK value - C:0%, M:50%, Y:50%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. X220 CMYK value - C:100%, M:20%, Y:20%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 0200 CMYK value - C:0%, M:20%, Y:0%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 1X60 CMYK value - C:13%, M:100%, Y:60%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 5310 CMYK value - C:50%, M:30%, Y:13%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 2X20 CMYK value - C:20%, M:100%, Y:20%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 52X0 CMYK value - C:50%, M:20%, Y:100%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 15X0 CMYK value - C:13%, M:50%, Y:100%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. A260 CMYK value - C:8%, M:20%, Y:60%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 0450 CMYK value - C:0%, M:40%, Y:50%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 1530 CMYK value - C:13%, M:50%, Y:30%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 1330 CMYK value - C:13%, M:30%, Y:30%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 1430 CMYK value - C:13%, M:40%, Y:30%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 2540 CMYK value - C:20%, M:50%, Y:40%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. A570 CMYK value - C:8%, M:50%, Y:70%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 0700 CMYK value - C:0%, M:70%, Y:0%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 4020 CMYK value - C:40%, M:0%, Y:20%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. 0650 CMYK value - C:0%, M:60%, Y:50%, K:0% CMYK values were assigned by DGGS staff based on the standards outlined in the U.S. Geological Survey, 2005, Selection of colors and patterns for geologic maps of the U.S. Geological Survey: Techniques and Methods 11-B1, 19 p.; 1 plate. Notes Free text for additional information about the feature. Alaska Division of Geological & Geophysical Surveys The notes indicate the basis of the feature interpretation: "Plug", "inferred from 7200Hz", and "Outline based on topographic relief" pir2015-6-OrientationPoints.shp A point file that provides field station locations, symbology, and associated structure data (bedding attitudes, foliation attitudes, slip vectors measured at a point, etc.) Alaska Division of Geological & Geophysical Surveys and the NCGMP09 - Draft Standard Format for Digital Publication of Geologic Maps, Version 1.1 by the USGS National Cooperative Geologic Mapping Program (NCGMP), note that all field names were derived from the standard but truncated at ten characters. OrientationPoints Type The type of feature measured Alaska Division of Geological & Geophysical Surveys The type of feature measured: mylonitic foliation, cleavage, compaction foliation, joint surface, flow, schistosity, fault, shear band, metamorphic foliation, vein wall, bedding, fracture surface, boudinage, crenulation cleavage, dike wall, bedding with tops, dike contact, axial plane, igneous layering or foliation, bed parallel schistosity, slickenside surface, minor slip surface, gneissic layering, fold axis, slaty cleavage, outcrop trend, minor fault, igneous flow banding, major fault, bedding from photo, sill, spaced cleavage, mineral lineation, crenulation lineation, stretched mineral, slickenline, boudins, rods, intersection lineation, stretched pebble, fault trend, vein trend, hinge line, stretched clast, and striation StationID Identifier assigned by person who originally located station Alaska Division of Geological & Geophysical Surveys Generic example of a sample identifier: YYYYAAA9999X: YY or YYYY= year, AAA=geologist's initials (one to three characters), 9999=unique station number, X= optional alpha character which indicates that multiple samples were collected at a given location or that multiple observations were recorded in the project database. Symbol References the symbol value that was assigned to the line segment. Alaska Division of Geological & Geophysical Surveys FGDC Digital Cartographic Standard for Geologic Map Symbolization; Appendix A. Geologic map symbols, colors, and patterns, "REF NO" field Federal Geographic Data Committee [prepared for the Federal Geographic Data Committee by the U.S. Geological Survey], 2006, FGDC Digital Cartographic Standard for Geologic Map Symbolization: Reston, Va., Federal Geographic Data Committee Document Number FGDC-STD-013-2006, 290 p., 2 plates. Label Text string to display along with symbol, usually dip and plunge values for measured orientations Alaska Division of Geological & Geophysical Surveys free text that is intended to display adjacent to the label point on the map PlotAtScal The scale at which the observation should be plotted Alaska Division of Geological & Geophysical Surveys 0 50000 LocationCo Radius in meters of positional uncertainty envelope Alaska Division of Geological & Geophysical Surveys 10 250 meters Azimuth Strike or trend, measured in degrees clockwise from geographic North. These values use right-hand rule (dip is to right of azimuth direction). Alaska Division of Geological & Geophysical Surveys 0 359 degrees Inclinatio Dip or plunge, measured in degrees down from horizontal. Alaska Division of Geological & Geophysical Surveys 0 90 degrees IdentityCo Indicates degree of confidence in the identification and classification of the line segment. Alaska Division of Geological & Geophysical Surveys Certain Indicates that the author has sufficient observational and/or other supporting data to be reasonably confident in the scientific credibility of the interpretation of the feature. The level of certainty is specific to the map scale. Alaska Division of Geological & Geophysical Surveys pir2015-6-Stations.shp A point file that provides location information, observations, and other data specific to each field observation station. Alaska Division of Geological & Geophysical Surveys and the NCGMP09 - Draft Standard Format for Digital Publication of Geologic Maps, Version 1.1 by the USGS National Cooperative Geologic Mapping Program (NCGMP), note that all field names were derived from the standard but truncated at ten characters. Stations FieldID Identifier assigned by person who originally located station. Alaska Division of Geological & Geophysical Surveys Generic example of a sample identifier: YYYYAAA9999X: YY or YYYY= year, AAA=geologist's initials (one to three characters), 9999=unique station number, X= optional alpha character which indicates that multiple samples were collected at a given location or that multiple observations were recorded in the project database. LocationCo Radius in meters of positional uncertainty envelope Alaska Division of Geological & Geophysical Surveys 10 10 meters LocationMe Term that categorizes technique used to determine station location. Alaska Division of Geological & Geophysical Surveys handheld GPS Location data were collected using an unspecified model of Global Positioning System (GPS) receiver. Alaska Division of Geological & Geophysical Surveys TimeDate Time and date of observation at the station Alaska Division of Geological & Geophysical Surveys 6/25/2014 8/3/2014 Calendar Date Observer Name of the person who located station Alaska Division of Geological & Geophysical Surveys Field investigators were: Freeman, Lawrence K., Lande, Lauren, Newberry, R.J, Reioux, David A., Sicard, Karri R., Twelker, Evan and Wypych, Alicja Notes Additional information about the station Alaska Division of Geological & Geophysical Surveys Free text description. Note: the value may be truncated if the description exceeds 255 characters Alaska Division of Geological & Geophysical Surveys mailing and physical

3354 College Road

Fairbanks AK 99709-3707 USA (907)451-5020 (907)451-5050 dggspubs@alaska.gov 8 am to 4:30 pm, Monday through Friday, except State holidays Please view our website (http://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible. PIR 2015-6 The State of Alaska makes no expressed 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. DGGS publications are available as free online downloads or you may purchase paper hard-copies or digital files on CD/DVD or other digital storage media by mail, phone, fax, or email from the DGGS Fairbanks office. 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. Turnaround time is 1-2 weeks unless special arrangements are made and an express fee is paid. Shipping charge will be the actual cost of postage and will be added to the total amount due. Contact us for the exact shipping amount. Contact DGGS for current pricing Shapefiles http://dx.doi.org/10.14509/29470 Free download 20150914 Alaska Division of Geological & Geophysical Surveys Metadata Manager mailing and physical

3354 College Road

Fairbanks AK 99709-3707 USA (907)451-5020 FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 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 Alaska Department of Natural Resources or Division of Geological & Geophysical Surveys. http://www.dggs.alaska.gov/metadata/dggs.ext dggs metadata extensions