Harris, E.E. Peapples, P.R. Mull, C.G. Lepain, D.L. 2009 map, vector digital data Preliminary Interpretive Report PIR 2009-7 Fairbanks, AK, USA State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys 1 sheet, scale 1:63,360 http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=19781 The Kanayut River area in the Chandler Lake Quadrangle, North Slope, Alaska, is located in the foothills of the Endicott Mountains. It is one of a series of areas selected for detailed mapping to document important structural and stratigraphic relationships at the mountain front of the east-central Brooks Range. This publication presents a geological map, cross section, correlation of map units, location index, and map unit descriptions. Local field studies by the Alaska Division of Geological & Geophysical Surveys (DGGS) began in the area in 1982 and continued intermittently in conjunction with other field studies. In recent years, interest in hydrocarbon exploration in the Brooks Range foothills has increased considerably, resulting in an opportunity to compile previous studies as well as to carry out additional field studies to address specific structural and stratigraphic problems. 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_Attribution_Information" section. Each layer is listed and described in detail under its own heading starting "Entity_Type_Label." Layers include: >attitudes structural data such as strike and dip of bedding >beds traceable beds >faults fault traces >folds fold axes >kan_inferred inferred geologic contact >kancompgeo geologic formations >kancompgeo_contacts contacts between geologic units >Kc location of Coquinoid limestone occurrences 2004 2009 ground condition Complete None planned -151.20000 -150.60000 68.75000 68.31000 none Colville Basin Foldbelt Contact Geology Formations STATEMAP Project none Alaska, State of Brooks Range Chandler Lake Quadrangle Kanayut River Nanushuk River North Slope NPRA none Brookian Sequence Buchia Limestone Coquina Endicott Mountain Allochthon Cobblestone Member Ear Peak Member Ellesmerian Sequence Fortress Mountain Formation Franklinian Sequence Hunt Fork Shale Imnaitchiak Chert Ipnavik River Allochthon Kanayut Conglomerate Kayak Shale Lisburne Group Nanushuk Formation Okpikruak Formation Otuk Formation Seabee Formation Shainin Lake Member Siksikpuk Formation Stuver Member Torok Formation Tuluvak Formation none Cretaceous Devonian Jurassic Mississippian Permian Pennsylvanian Quaternary Triassic This report, map, and/or data set are available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below). Any hardcopies or published data sets utilizing these data sets 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 data sets, 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. This Geologic Map was funded in part by the U.S. Geological Survey National Cooperative Geologic Mapping Program under assistance award number 03HQAG0055. Geologic field investigations by: C.G. Mull (1984-1985, 1989, 1999-2003); E.E. Harris (1985, 1999-2000, 2002-2003); P.R. Delaney (2002-2003); D.L. LePain (2000-2001, 2003); M.A. Wartes (2001-2002); R.R. Reifenstuhl (2003); P.A. Craw (2003); W.K. Wallace (2002); M.T. Whalen (2003); A.M. McCarthy (2001-2002); R.A. Kirkham (2000-2001); J.A. Dumoulin (2003); E.S. Finzel (2002-2003); K.D. Ridgway (2003); and R.R. Casavant (2003); D.A. Bodnar (1983); K.E. Adams (1984-1985); D.W. Houseknecht (2003). Geologic point, line, and polygon data were mapped in the field using color infrared aerial photographs at a scale of approximately 1:63,360 and topographic maps at scales of 1:63,360 and larger. Feature attributes were verified by the geologists who conducted the field observations. To check attribute accuracy, a check plot was visually compared to the geologist's original compilation. Discrepancies between the digital geospatial dataset and the original analog or digital compilation were corrected as needed. The geologic interpretations presented in this report have undergone one technical review by a geologist familiar with the subject of the report and the geology of the map area. The reviewer's suggestions were incorporated into the final draft when deemed appropriate by the authors. Polygon topology is present and clean on the originating geospatial dataset. All polygon features were topologically validated using the ESRI ArcGIS 9.0 software prior to export to shape file format. The logical consistency of the point and line files has been visually checked but not systematically verified. This data set includes field and air photo observations distinguishable at a scale of 1:63360. It includes geospatial information about beds traceable on air photos and/or in the field. The dataset displays: geologic units and contacts; inferred geologic contacts; fold and fault traces; strike, dip, and fold axis attitude. Samples were collected for petrographic, age, and/or geochemical analysis. The degree to which analytical data was utilized in developing the geologic interpretations presented in this report is unknown. This dataset does not include point locations of samples collected. Locations were determined in the field using visual identification of land forms, rivers and creeks, and other physiographic features on topographic base maps and with hand-held Garmin GPS units. The positional accuracy of features which were visually identified is not precisely knowable, but thought to be accurate within 5 meters in areas of high topographic relief and good rock exposure. The error is possibly more (not more than 15-20 meters) in very low relief and/or highly vegetated terrain. The estimated positional error calculated by the GPS units was not recorded but is thought to be less than 5 meters. Bedrock geologic map data also have a horizontal positional accuracy dependent on the "on-screen" method of digital cartography. 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 inches being equivalent to approximately 1.5 meters on the ground; (2) the digitizing RMS error (30 control points on a regular grid have an average RMS error of 14.0 meters on the ground; individual control point error ranges from 2.9 to 24.0 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 inches being equivalent to approximately 1.5 meters on the ground. Summing up all the above potential horizontal errors, the average potential horizontal error for bedrock geologic map features is estimated to be less than 20 meters. U.S. Geological Survey 1971 map Reston, VA U.S. Geological Survey scale 1:63,360 63360 paper 1971 ground condition USGS Chandler Lake B-2 base map U.S. Geological Survey 1971 map Reston, VA U.S. Geological Survey scale 1:63,360 63360 paper 1971 ground condition USGS Chandler Lake C-2 base map Broge, W.P. Reiser, H.N. Dutro, J.T. Nilsen, T.H. 1979 map U.S. Geological Survey Open-file Report OF 79-1224 scale 1:200,00 200000 paper 1979 ground condition Broge and others, 1979 geologic mapping Chapman, R.M. Detterman, R.L. Mangus, M.D. 1964 map U.S. Geological Survey Professional Paper P 303-F p. 325-407, 7 sheets, scale 1:125,000 250000 paper 1964 ground condition Chapman and others, 1964 geologic mapping Mull, C.G. Harris, E.E. Delaney, P.R. Swenson, R.F. 2009 vector digital data Preliminary Interpretive Report PIR 2009-5 Fairbanks, Alaska Alaska Division of Geological & Geophysical Surveys 40 p., 1 sheet, scale 1:63,360 http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=19661 63360 paper 2009 ground condition Mull and others, 2009 geologic mapping Mull, C.G. Sonneman, H.S. 1974 map USA Exxon Co, USA scale 1:250,000 250000 paper 1974 ground condition Mull and Sonneman, 1974 geologic mapping Patton, W.W. Tailleur, I.L. 1964 document U.S. Geological Survey Professional Paper P 303G p. 409-500 paper 1964 publication date Patton and Tailleur, 1964 geologic mapping Peapples, P.R. Wallace, W.K. Wartes, M.A. Swenson, R.F. Mull, C.G. Dumoulin, J.A. Harris, E.E. Finzel, E.F. Reifenstuhl, R.R. Loveland, A.M. 2007 vector digital data Perliminary Interpretive Report PIR 2007-1 Fairbanks, Alaska Alaska Division of Geological & Geophysical Surveys 1 sheet, scale 1:63,360 http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=15757 63360 paper 2007 ground condition Peapples and others, 2007 geologic mapping Hamilton, T.D. 1979 map U.S. Geological Survey Miscellaneous Field Studies Map MF 1121 1 sheet, scale 1:250,000 250000 paper 1979 ground condition Hamilton, 1979 surficial geologic mapping Compilation of existing work - Geologic and structural information from published and unpublished mapping of the target region and adjacent regions was compiled. Broge and others, 1979 Chapman and others, 1964 Mull and others, 2009 Mull and Sonneman, 1974 Patton and Tailleur, 1964 Peapples and others, 2007 Hamilton, 1979 2002 Bedrock geologic mapping - During the summers of 2002 and 2003 DGGS conducted geologic field mapping of the bedrock units in the Kanyut River area. Geologists recorded observations on 1:63,360-scale topographic base maps and/or similarly scaled aerial photographs. Field notes and rock samples were collected at stations throughout the map area. Locations of sample sites and orientation measurement stations were confirmed using handheld GPS units. Geologists' observations were analyzed relative to the interpretations of previous workers and compiled onto a single mylar base map. Samples were collected for petrographic, age, and/or geochemical analysis. Broge and others, 1979 Chapman and others, 1964 Mull and others, 2009 Mull and Sonneman, 1974 Patton and Tailleur, 1964 Peapples and others, 2007 USGS Chandler Lake B-2 USGS Chandler Lake C-2 2003 Surficial geologic mapping - the surficial geologic mapping presented in this publication is a refinement of published, 1:250,000 scale mapping. The original acetate overlays used to produce the Hamilton, 1979, 1:250,000 scale map were individually scanned and orthorectified, using Orthomapper, and then georeferenced and superimposed, via ArcGIS, over orthorectified, photomosaiced and georeferenced 1:63,360 scale aerial photographs. The surficial unit contacts were then refined to reflect the 1:63,360 scale of this map. Areas which warranted further study were checked in the field. Hamilton, 1979 2003 Digital Cartography - The compilation mylar was scanned as a high-resolution tiff file, which was imported into ArcGIS 9.1 and geographically registered in UTM coordinates. Geologic polygons, linear features, and point data were digitized "on-screen" and attributed with appropriate supporting information. The surficial geology interpretaions were superimposed over the map units defined in the bedrock mapping and the datasets were merged. All final map layout and editing was done in Adobe Illustrator, Version CS2. USGS Chandler Lake B-2 USGS Chandler Lake C-2 2004 Vector Universal Transverse Mercator 5 0.9996 -153 0 500000 0 coordinate pair 0.00001 0.00001 meters attitudes Universal Transverse Mercator 5 0.9996 -153.0 0 500000 0 coordinate pair 0.00001 0.00001 meters beds Universal Transverse Mercator 5 0.9996 -153.0 0 500000 0 coordinate pair 0.00001 0.00001 meters faults Universal Transverse Mercator 5 0.9996 -153.0 0 500000 0 coordinate pair 0.00001 0.00001 meters folds Universal Transverse Mercator 5 0.9996 -153.0 0 500000 0 coordinate pair 0.00001 0.00001 meters kan_inferred Universal Transverse Mercator 5 0.9996 -153.0 0 500000 0 coordinate pair 0.00001 0.00001 meters kancompgeo Universal Transverse Mercator 5 0.9996 -153.0 0 500000 0 coordinate pair 0.00001 0.00001 meters kancompgeo_contacts Universal Transverse Mercator 5 0.9996 -153.0 0 500000 0 coordinate pair 0.00001 0.00001 meters Kc D_Clarke_1866 Clarke 1866 6378206.4 294.978698 kancompgeo kancompgeo.shp vector, represents geologic formations Alaska Division of Geological & Geophysical Surveys UNIT geologic unit Alaska Division of Geological & Geophysical Surveys Qa Modern Alluvium Alaska Division of Geological & Geophysical Surveys Qal Alluvium, Undifferentiated Alaska Division of Geological & Geophysical Surveys Qu Quarternary units, undifferentiated Alaska Division of Geological & Geophysical Surveys Qtg Terrace Gravel Alaska Division of Geological & Geophysical Surveys Qca Colluvium/Alluvial Deposits Alaska Division of Geological & Geophysical Surveys Qf Fan Deposits, Undifferentiated Alaska Division of Geological & Geophysical Surveys Qt Talus Rubble Alaska Division of Geological & Geophysical Surveys Qs Solifluction Deposits Alaska Division of Geological & Geophysical Surveys Qsi Ice-Rich Silt Deposits Alaska Division of Geological & Geophysical Surveys Qid Drift of Itkillik Age, Undifferentiated Alaska Division of Geological & Geophysical Surveys Qid3 Drift of Latest Itkillik Readvance Alaska Division of Geological & Geophysical Surveys Qid2 Drift of Itkillik Phase II Alaska Division of Geological & Geophysical Surveys Qid1 Drift of Itkillik I Age Alaska Division of Geological & Geophysical Surveys Qio Outwash of Itkillik Advance Alaska Division of Geological & Geophysical Surveys Qsd Drift of Sagavanirktok River Age Alaska Division of Geological & Geophysical Surveys Qso Outwash of Late Sagavanirktok River Advance Alaska Division of Geological & Geophysical Surveys Qad Drift of Anaktuvuk River Age Alaska Division of Geological & Geophysical Surveys Qao Outwash of Anaktuvuk River Advance Alaska Division of Geological & Geophysical Surveys Tgd Drift of Gunsight Mountain Age Alaska Division of Geological & Geophysical Surveys Ktu Tuluvak Formation Alaska Division of Geological & Geophysical Surveys Ks Seabee Formation Alaska Division of Geological & Geophysical Surveys Knu Nanushuk Formation, upper part Alaska Division of Geological & Geophysical Surveys Knl Nanushuk Formation, lower part Alaska Division of Geological & Geophysical Surveys Kto Torok Formation Alaska Division of Geological & Geophysical Surveys Kfm Fortress Mountain Formation Alaska Division of Geological & Geophysical Surveys Kfmc Cobblestone Member of the Fortress Mountain Formation Alaska Division of Geological & Geophysical Surveys Ko Okpikruak Formation Alaska Division of Geological & Geophysical Surveys JPi/mi Imnaitchiak Chert and mafic igneous dikes Alaska Division of Geological & Geophysical Surveys Kc/Kk Buchia Limestone Coquina and associated shales Alaska Division of Geological & Geophysical Surveys JTro Otuk Formation Alaska Division of Geological & Geophysical Surveys Ps Siksikpuk Formation Alaska Division of Geological & Geophysical Surveys PMl Lisburne Group Alaska Division of Geological & Geophysical Surveys Mk Kayak Shale Alaska Division of Geological & Geophysical Surveys MDks Stuver Member of the Kanayut Conglomerate Alaska Division of Geological & Geophysical Surveys Dksl Shainin Lake Member of the Kanayut Conglomerate Alaska Division of Geological & Geophysical Surveys Dke Ear Peak Member of the Kanayut Conglomerate Alaska Division of Geological & Geophysical Surveys Dhf Hunt Fork Shale Alaska Division of Geological & Geophysical Surveys kancompgeo_contacts kancompgeo_contacts.shp vector, represents contacts between geologic units Alaska Division of Geological & Geophysical Surveys faults faults.shp vector, represents fault trace Alaska Division of Geological & Geophysical Surveys type type of fault, determines symbology Alaska Division of Geological & Geophysical Surveys alloch major thrust fault bounding structural provinces Alaska Division of Geological & Geophysical Surveys apx?backth approximately located, queried backthrust Alaska Division of Geological & Geophysical Surveys apx?thrust approximately located, queried thrust fault Alaska Division of Geological & Geophysical Surveys apx_alloch approximately located thrust fault bounding structural provinces Alaska Division of Geological & Geophysical Surveys dot dotted line representing a fault under Quaternary cover Alaska Division of Geological & Geohysical Surveys dot?alloch concealed, queried major thrust fault bounding structural provinces Alaska Division of Geological & Geophysical Surveys dot?backth concealed, queried backthrust Alaska Division of Geological & Geophysical Surveys dot?detach concealed, queried detachment Alaska Division of Geological & Geophysical Surveys dot?thrust concealed, queried thrust fault Alaska Division of Geological & Geophysical Surveys dot_alloch concealed major thrust fault bounding structural provinces Alaska Division of Geological & Geophysical Surveys dot_red concealed major thrust fault bounding structural provinces Alaska Division of Geological & Geophysical Surveys dot_thrust concealed thrust fault Alaska Division of Geological & Geophysical Surveys thrust thrust fault Alaska Division of Geological & Geophysical Surveys l_lat_dot concealed fault with left lateral sense of motion Alaska Division of Geological & Geophysical Surveys attitudes attitudes.shp point, represents strike and dip Alaska Division of Geological & Geophysical Surveys strike strike of bedding Alaska Division of Geological & Geophysical Surveys 0 360 dip dip of bedding Alaska Division of Geological & Geophysical Surveys 0 90 type type of bedding attitude, determines symbology Alaska Division of Geological & Geophysical Surveys inclined inclined bedding Alaska Division of Geological & Geophysical Surveys vertical vertical bedding Alaska Division of Geological & Geophysical Surveys horizontal horizontal bedding Alaska Division of Geological & Geophysical Surveys overturned overturned bedding Alaska Division of Geological & Geophysical Surveys approximate approximate bedding attitude Alaska Division of Geological & Geophysical Surveys folds folds.shp vector, represents fold axes Alaska Division of Geological & Geophysical Surveys type type of fold, determines symbology Alaska Division of Geological & Geophysical Surveys Fold Axis trace of axial plane and direction of plunge Alaska Division of Geological & Geophysical Surveys Syncline axial trace of syncline Alaska Division of Geological & Geophysical Surveys Anticline axial trace of anticline Alaska Division of Geological & Geophysical Surveys Overturned anticline axial trace of overturned anticline Alaska Division of Geological & Geophysical Surveys Doubly overturned anticline axial trace of doubly overturned anticline Alaska Division of Geological & Geophysical Surveys beds beds.shp Vector, bedding traces visible at the surface. DGGS kan_inferred kan_inferred.shp Vector, inferred geologic contacts DGGS Kc Kc.shp point, location of Coquinoid limestone occurrences DGGS State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys Natural Resource Technician mailing

3354 College Road

Fairbanks AK 99709-3707 907-451-5020 907-451-5050 dggspubs@dnr.state.ak.us 8 am to 4:30 pm, Monday through Friday, except State holidays Please view our Web site (http://www.dggs.dnr.state.ak.us) for the latest information on available data. Please contact us using the e-mail address provided above when possible. Preliminary Interpretive Report 2009-7 The State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products, any failure thereof, or otherwise, and in no event will the State of Alaska's liability to the requester or anyone else exceed the fee paid for the electronic service or product. Current publication is available on paper. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@dnr.state.ak.us), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Contact Division of Geological & Geophysical Surveys for current purchase price (contact information below. ArcGIS Shapefile see Format Specification ESRI ArcGIS 9 No compression applied http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=19781 PDF 1.3 No compression applied http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=19781 Digital files on CD-ROM are available for $10.00 (contact information below) or downloaded for free from the DGGS website. Order by phone (907-451-5020), e-mail (dggspubs@dnr.state.ak.us), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Two weeks unless special arrangements are made and an express fee is paid. 20090130 State of Alaska, Division of Geological & Geophysical Surveys Simone Montayne Metadata manager mailing and physical address

3554 College Road

Fairbanks AK 99709 USA (907) 451-5010 DGGS does not have a TDD/TTY phone. (907) 451-5050 dggspubs@dnr.state.ak.us 8 to 4:30, Monday through Friday Please address all comments or questions to the e-mail address given above whenever possible. FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 none If the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.