DGGS Preliminary Interpretive Report Publications

This category is intended for the timely release of maps and reports with preliminary interpretation of geology or analytical data. It includes reports by DGGS staff, scientists from other organizations, and contractor reports containing technical interpretations of analytical data. Maps and reports have been reviewed by one or two people for technical content.

PIR 2024-8

Hubbard, T.D., and Wolken, G.J., 2024, Surficial-geologic map of the Kivalina area, northwest Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2024-8, 5 p., 1 sheet, scale 1:50,000. https://doi.org/10.14509/31300

PIR 2024-5

Hudson, Travis, 2024, Observations of Pleistocene features in the Bering Strait region of Seward Peninsula, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2024-5, 20 p. https://doi.org/10.14509/31055

PIR 2024-4

Bull, K.F., Stevens, D.S.P., Gillis, R.J., Wolken, G.J., and Balazs, M.S., 2024, Geology and geologic hazards in the Whittier area, Southcentral Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2024-4, 21 p., 1 sheet, scale 1:50,000. https://doi.org/10.14509/31426

PIR 2024-3

LePain, D.L., and Kirkham, R.A., 2024, Measured stratigraphic section, upper Nanushuk Formation (Cenomanian), Ninuluk Bluff, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2024-3, 28 p., 1 sheet. https://doi.org/10.14509/31150

PIR 2024-2

Nicolazzo, J.A., Wikstrom Jones, K.M., Salisbury, J.B., and Horen, K.C., 2024, Post-landslide elevation changes detected from multi-temporal lidar surveys of the November 2023 Wrangell, Alaska, landslides: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2024-2, 22 p. https://doi.org/10.14509/31124

PIR 2024-1

Gillis, R.J., Trop, J.M., and Kuyl, Leo, 2024, Preliminary description and interpretation of the Doone Creek fault and associated structures: The potential offset and northeastward continuation of the Bruin Bay fault system in the south-central Talkeetna Mountains, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2024-1, 18 p. https://doi.org/10.14509/31108

PIR 2023-2

Gavel, M.M., Regan, S.P., Holland, Mark, Wildland, A.D., Wypych, Alicja, Naibert, T.J., and Twelker, Evan, 2023, U-Pb zircon geochronology of bedrock samples collected in the Eagle and Tanacross quadrangles, eastern Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2023-2, 38 p. https://doi.org/10.14509/31013

PIR 2023-1

Tannenbaum, T.G., Speeter, G.G., and Hubbard, T.D., 2024, Arctic Strategic Transportation and Resources (ASTAR) Project geophysical report: capacitively-coupled resistivity survey for Utqiagvik, Atqasuk, and Wainright road network, North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2023-1, 72 p. https://doi.org/10.14509/30960

PIR 2022-2

Athey, J.E., Freeman, L.K., Newberry, R.J., Werdon, M.B., Szumigala, D.J., and Lessard, R.R., 2022, Bedrock geologic map of the northern Fairbanks mining district, Circle Quadrangle, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2022-2, 24 p., 1 sheet, scale 1:50,000. https://doi.org/10.14509/30891

PIR 2022-1

LePain, D.L., Harun, N.T., and Kirkham, R.A., 2022, Measured stratigraphic section, lower Nanushuk Formation (Albian), Slope Mountain (Marmot syncline), Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2022-1, 21 p., 1 sheet. https://doi.org/10.14509/30871

PIR 2021-6

LePain, D.L., Harun, N.T., and Kirkham, R.A., 2021, Measured stratigraphic section, lower Nanushuk Formation (Albian), Arc Mountain anticline, Nanushuk River, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2021-6, 15 p., 1 sheet. https://doi.org/10.14509/30762

PIR 2021-5

LePain, D.L., Kirkham, R.A., and Montayne, Simone, 2021, Measured stratigraphic section, Nanushuk Formation (Albian-Cenomanian), Nanushuk River (Rooftop Ridge), Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2021-5, 8 p., 1 sheet. https://doi.org/10.14509/30744

PIR 2021-4

Wildland, A.D., Wypych, Alicja, Regan, S.P., and Holland, Mark, 2021, U-Pb zircon ages from bedrock samples collected in the Tanacross and Nabesna quadrangles, eastern Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2021-4, 47 p. https://doi.org/10.14509/30732

PIR 2021-3

LePain, D.L., Wartes, M.A., Kirkham, R.A., and Mongrain, J.R., 2021, Measured stratigraphic section in the upper Schrader Bluff Formation (Late Campanian-Maastrichtian?), Ivishak River, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2021-3, 11 p., 1 sheet. https://doi.org/10.14509/30693

PIR 2021-2

Twelker, Evan, and O'Sullivan, P.B., 2021, U-Pb detrital zircon geochronology of Cretaceous-Cenozoic sedimentary rocks in the Ladue River-Mount Fairplay area, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2021-2, 16 p. https://doi.org/10.14509/30683

PIR 2021-1

Larsen, J.F., Waythomas, C.F., Mulliken, K.M., Izbekov, Pavel, and Cameron, C.E., 2021, Major-element oxide, trace element, and glass compositional analyses from Holocene to historical eruptions from Pavlof Volcano, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2021-1, 20 p. https://doi.org/10.14509/30580

PIR 2020-4

Harun, N.T., and Wartes, M.A., 2020, Preliminary characterization of two coals from the upper Prince Creek Formation, Sagwon Bluffs, North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2020-4, 13 p. https://doi.org/10.14509/30556

PIR 2020-3

LePain, D.L., and Helmold, K.P., 2020, Facies architecture of a slope incision, Canning Formation, Ivishak River, Alaska: Implications for sediment bypass and deepwater reservoir potential: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2020-3, 1 sheet. https://doi.org/10.14509/30553

PIR 2020-2

Wypych, Alicja, Jones, J.V., III, and O'Sullivan, Paul, 2020, U-Pb Zircon ages from bedrock samples collected in the Tanacross D-1, and parts of the D-2, C-1, and C-2 quadrangles, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2020-2, 19 p. https://doi.org/10.14509/30465

PIR 2020-1

Newberry, R.J., 2020, The Mount Fairplay igneous complex: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2020-1, 32 p. https://doi.org/10.14509/30463

PIR 2019-6

Wypych, Alicja, Hubbard, T.D., Naibert, T.J., Athey, J.E., Newberry, R.J., Sicard, K.R., Twelker, Evan, Werdon, M.B., Willingham, A.L., Wyatt, W.C., and Lockett, A.C., 2019, Northeastern Tanacross geologic map, Tanacross D-1, D-2, C-1, and C-2 quadrangles, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2019-6, 20 p., 1 sheet, scale 1:63,360. https://doi.org/10.14509/30197

PIR 2019-5

Herriott, T.M., Wartes, M.A., O'Sullivan, P.B., and Gillis, R.J., 2019, Detrital zircon maximum depositional dates for the Jurassic Chinitna and Naknek Formations, lower Cook Inlet, Alaska: A preliminary view: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2019-5, 11 p. https://doi.org/10.14509/30180

PIR 2019-4

Wikstrom Jones, K.M., and Wolken, G.J., 2019, Valdez Glacier ice-dammed lake: June 2018 glacial lake outburst flood: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2019-4, 6 p. https://doi.org/10.14509/30175

PIR 2019-3

Solie, D.N., Werdon, M.B., Freeman, L.K., Newberry, R.J., Szumigala, D.J., Speeter, G.G., and Elliott, B.A., 2019, Bedrock-geologic map, Alaska Highway corridor, Tetlin Junction, Alaska to Canada border: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2019-3, 16 p., 2 sheets, scale 1:63,360. https://doi.org/10.14509/30038

PIR 2019-2

Werdon, M.B., Solie, D.N., Andrew, J.E., Freeman, L.K., Newberry, R.J., Szumigala, D.J., and Elliott, B.A., 2019, Bedrock-geologic map, Alaska Highway corridor, Dot Lake to Tetlin Junction, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2019-2, 14 p., 2 sheets, scale 1:63,360. https://doi.org/10.14509/30037

PIR 2019-1

Werdon, M.B., Solie, D.N., Newberry, R.J., Freeman, L.K., Elliott, B.A., and Lessard, R.R., 2019, Bedrock-geologic map, Alaska Highway corridor, Little Gerstle River to Dot Lake, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2019-1, 12 p., 1 sheet, scale 1:63,360. https://doi.org/10.14509/30036

PIR 2018-3

Gillis, R.J., Fitzgerald, P.G., Ridgway, K.D., Keough, B.M., Benowitz, J.A., and Allen, W.K., 2019, Overview of the new 1:25,000-scale geologic mapping of the McCallum-Slate Creek fault system, eastern Alaska Range, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2018-3, 10 p. https://doi.org/10.14509/30136

PIR 2018-2

Harun, N.T., and Hendricks, M.D., 2018, Jarvis Creek coal report: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2018-2, 11 p. https://doi.org/10.14509/30064

PIR 2017-5

Herriott, T.M., and Wartes, M.A., 2017, Discovery of a 35-meter-thick, oil-stained sandstone interval in outcrop of the Tonnie Siltstone Member, Chinitna Formation, lower Cook Inlet, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2017-5, 12 p. https://doi.org/10.14509/29837

PIR 2017-4

Wolken, G.J., and Wikstrom Jones, K.M., 2017, Valdez Glacier ice-dammed lake: June 2017 glacial lake outburst flood: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2017-4, 5 p. https://doi.org/10.14509/29743

PIR 2017-3

Sicard, K.R., Naibert, T.J., Hubbard, T.D., Twelker, Evan, Wypych, Alicja, Werdon, M.B., Willingham, A.L., Gillis, R.J., Lande, L.L., and Newberry, R.J., 2017, Geologic map of the Tok River area, Tanacross A-5 and A-6 quadrangles, eastern Alaska Range, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2017-3, 15 p., 1 sheet, scale 1:63,360. https://doi.org/10.14509/29722

PIR 2017-2

Fuchs, W.A., 2019, Geologic map of the Castle Mountain-Caribou fault system, Talkeetna Mountains, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2017-2, 57 p., 2 sheets, scale 1:24,000. https://doi.org/10.14509/29715

PIR 2017-1

Hubbard, T.D., 2017, Slope instability drilling program, Tonsina Hill, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2017-1, 36 p. https://doi.org/10.14509/29710

PIR 2016-6

LePain, D.L., and Stanley, R.G., 2017, Reconnaissance sedimentology of selected Tertiary exposures in the upland region bordering the Yukon Flats basin, east-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-6, 14 p. https://doi.org/10.14509/29700

PIR 2016-5

Barker, J.C., 2016, Investigation of rare-earth elements and zirconium in the northern Windy Fork peralkaline pluton, west-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-5, 17 p. https://doi.org/10.14509/29667

PIR 2016-4

Barker, J.C., Kelley, J.J., and Naidu, A.S., 2016, Heavy mineral concentration in a marine sediment transport conduit, Bering Strait, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-4, 24 p. https://doi.org/10.14509/29666

PIR 2016-3

Freeman, L.K., Newberry, R.J., Werdon, M.B., Szumigala, D.J., Andrew, J.E., and Athey, J.E., 2016, Preliminary bedrock geologic map data for the eastern Bonnifield mining district, Fairbanks and Healy quadrangles, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-3, 6 p. https://doi.org/10.14509/29661

PIR 2016-2

Twelker, Evan, Freeman, L.K., Sicard, K.R., and Busk, A.C., 2016, Preliminary report on mineral occurrences in the Tok River area, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-2, 7 p. https://doi.org/10.14509/29605

PIR 2016-1-10

Betka, P.M., and Gillis, R.J., 2016, Observations on the Bruin Bay fault system between Chinitna and Tuxedni bays, Cook Inlet, Alaska, in Herriott, T.M., ed., Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-1-10, p. 73-78. https://doi.org/10.14509/29544

PIR 2016-1-9

Rosenthal, J.L., Betka, P.M., Gillis, R.J., and Nadin, Elisabeth, 2016, Fracture intensity in the Paveloff Siltstone Member (Chinitna Formation) and Pomeroy Arkose Member (Naknek Formation), Iniskin Peninsula, Alaska: Implications for hydrocarbon migration in Cook Inlet basin, in Herriott, T.M., ed., Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-1-9, p. 67-72. https://doi.org/10.14509/29543

PIR 2016-1-8

Wartes, M.A., Gillis, R.J., and Harun, N.T., 2016, Revised mapping of the Upper Jurassic Naknek Formation in a footwall syncline associated with the Bruin Bay fault system, Chinitna Bay region, western Cook Inlet, Alaska, in Herriott, T.M., ed., Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-1-8, p. 59-66. https://doi.org/10.14509/29542

PIR 2016-1-7

Gillis, R.J., 2016, Discovery of a new sandstone with residual oil in Maastrichtian(?) strata at Shelter Creek, lower Cook Inlet, Alaska, in Herriott, T.M., ed., Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-1-7, p. 51-58. https://doi.org/10.14509/29541

PIR 2016-1-6

Herriott, T.M., Wartes, M.A., and Decker, P.L., 2016, Record of a Late Jurassic deep-water canyon at Chisik Island, south-central Alaska: Further delineation of Naknek Formation depositional systems in lower Cook Inlet, in Herriott, T.M., ed., Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-1-6, p. 45-49. https://doi.org/10.14509/29540

PIR 2016-1-5

Herriott, T.M., Wartes, M.A., Decker, P.L., and Harun, N.T., 2016, Preliminary stratigraphic architecture of the Middle Jurassic Paveloff Siltstone Member, Chinitna Formation, Tuxedni Bay area, Cook Inlet, Alaska, in Herriott, T.M., ed., Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-1-5, p. 39-44. https://doi.org/10.14509/29539

PIR 2016-1-4

Helmold, K.P., LePain, D.L., and Stanley, R.G., 2016, Sedimentary petrology and reservoir quality of the Middle Jurassic Red Glacier Formation, Cook Inlet forearc basin: Initial impressions, in Herriott, T.M., ed., Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-1-4, p. 33-37. https://doi.org/10.14509/29537

PIR 2016-1-3

LePain, D.L., Stanley, R.G., and Helmold, K.P., 2016, Reconnaissance stratigraphy of the Red Glacier Formation (Middle Jurassic) near Hungryman Creek, Cook Inlet basin, Alaska, in Herriott, T.M., ed., Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-1-3, p. 21-31. https://doi.org/10.14509/29536

PIR 2016-1-2

LePain, D.L., Stanley, R.G., and Helmold, K.P., 2016, Nonmarine facies in the Late Triassic(?) to Early Jurassic Horn Mountain Tuff Member of the Talkeetna Formation, Horn Mountain, lower Cook Inlet basin, Alaska, in Herriott, T.M., ed., Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-1-2, p. 9-20. https://doi.org/10.14509/29535

PIR 2016-1-1

Herriott, T.M., 2016, Introduction to petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska, in Herriott, T.M., ed., Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-1-1, p. 1-8. https://doi.org/10.14509/29534

PIR 2016-1

Herriott, T.M., ed., 2016, Petroleum-related geologic studies in lower Cook Inlet during 2015, Iniskin-Tuxedni region, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2016-1, 78 p. https://doi.org/10.14509/29532

PIR 2015-7

Wartes, M.A., and Herriott, T.M., 2015, Oil-stained sandstone in the Middle Jurassic lower Paveloff Siltstone Member of the Chinitna Formation: Exploring the potential role of facies variations in controlling diagenesis and reservoir quality in western Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-7, 9 p. https://doi.org/10.14509/29533

PIR 2015-6

Twelker, Evan, Hubbard, T.D., Wypych, Alicja, Sicard, K.R., Newberry, R.J., Reioux, D.A., Freeman, L.K., and Lande, L.L., 2015, Geologic map of the Talkeetna Mountains C-4 Quadrangle and adjoining areas, central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-6, 16 p., 1 sheet, scale 1:50,000. https://doi.org/10.14509/29470

PIR 2015-5-9

Herriott, T.M., Decker, P.L., and Wartes, M.A., 2015, Evidence of a submarine canyon in the Snug Harbor Siltstone and Pomeroy Arkose Members, Naknek Formation, south-central Alaska: Implications for the distribution of coarse-grained sediment in Upper Jurassic strata of Cook Inlet, in Wartes, M.A., ed., Energy-related studies during the 2014 field season, western Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-5-9, p. 57-62. https://doi.org/10.14509/29464

PIR 2015-5-8

Wartes, M.A., Decker, P.L., Herriott, T.M., and Helmold, K.P., 2015, Preliminary facies analysis of the lower sandstone member of the Upper Jurassic Naknek Formation, northern Chinitna Bay, Alaska, in Wartes, M.A., ed., Energy-related studies during the 2014 field season, western Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-5-8, p. 49-55. https://doi.org/10.14509/29463

PIR 2015-5-7

Helmold, K.P., and Stanley, R.G., 2015, Petrology and reservoir quality of the Gaikema Sandstone: Initial impressions, in Wartes, M.A., ed., Energy-related studies during the 2014 field season, western Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-5-7, p. 43-48. https://doi.org/10.14509/29462

PIR 2015-5-6

Stanley, R.G., Helmold, K.P., and LePain, D.L., 2015, Storm-influenced deltaic deposits of the Middle Jurassic Gaikema Sandstone in a measured section of the northern Iniskin Peninsula, Cook Inlet basin, Alaska, in Wartes, M.A., ed., Energy-related studies during the 2014 field season, western Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-5-6, p. 29-42. https://doi.org/10.14509/29461

PIR 2015-5-5

LePain, D.L., and Stanley, R.G., 2015, Stratigraphic reconnaissance of the Middle Jurassic Red Glacier Formation, Tuxedni Group, at Red Glacier, Cook Inlet, Alaska, in Wartes, M.A., ed., Energy-related studies during the 2014 field season, western Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-5-5, p. 23-28. https://doi.org/10.14509/29460

PIR 2015-5-4

Bull, K.F., 2015, Preliminary observations: Continued facies analysis of the Lower Jurassic Talkeetna Formation, north Chinitna Bay, Alaska, in Wartes, M.A., ed., Energy-related studies during the 2014 field season, western Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-5-4, p. 15-22. https://doi.org/10.14509/29459

PIR 2015-5-3

Rosenthal, J.L., Betka, P.M., Gillis, R.J., and Nadin, Elisabeth, 2015, Preliminary investigation of fracture populations in Mesozoic strata of the Cook Inlet forearc basin: Iniskin Peninsula and Lake Clark National Park, Alaska, in Wartes, M.A., ed., Energy-related studies during the 2014 field season, western Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-5-3, p. 9-13. https://doi.org/10.14509/29458

PIR 2015-5-2

Betka, P.M., and Gillis, R.J., 2015, The superposition of strike-slip and reverse-slip faults in the Bruin Bay fault system, Ursus Head, lower Cook Inlet, in Wartes, M.A., ed., Energy-related studies during the 2014 field season, western Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-5-2, p. 5-8. https://doi.org/10.14509/29457

PIR 2015-5-1

Wartes, M.A., 2015, An introduction to 2014 field studies in western Cook Inlet, Alaska, in Wartes, M.A., ed., Energy-related studies during the 2014 field season, western Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-5-1, p. 1-4. https://doi.org/10.14509/29456

PIR 2015-5

Wartes, M.A., ed., 2015, Energy-related studies during the 2014 field season, western Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-5, 62 p. https://doi.org/10.14509/29455

PIR 2015-4

Flaig, P.P., and van der Kolk, D.A., 2015, Depositional environments of the Prince Creek Formation along the east side of the Toolik River, Sagavanirktok Quadrangle, North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-4, 17 p., 1 sheet. https://doi.org/10.14509/29407

PIR 2015-3-5

Gillis, R.J., Herriott, T.M., and Tsigonis, R.M., 2015, Preliminary results of reconnaissance structural studies of the western Susitna basin, south-central Alaska, in Gillis, R.J., ed., Overview of 2014 energy-focused studies in Susitna basin, south-central Alaska, and preliminary results: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-3-5, p. 25-34. https://doi.org/10.14509/29469

PIR 2015-3-4

Harun, N.T., LePain, D.L., Tsigonis, R.M., Helmold, K.P., and Stanley, R.G., 2015, Reconnaissance coal study in the Susitna basin, 2014, in Gillis, R.J., ed., Overview of 2014 energy-focused studies in Susitna basin, south-central Alaska, and preliminary results: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-3-4, p. 19-24. https://doi.org/10.14509/29468

PIR 2015-3-3

Helmold, K.P., and LePain, D.L., 2015, Petrology and reservoir quality of sandstones from the Kahiltna Assemblage and Yenlo Hills graywacke: Initial impressions, in Gillis, R.J., ed., Overview of 2014 energy-focused studies in Susitna basin, south-central Alaska, and preliminary results: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-3-3, p. 11-18. https://doi.org/10.14509/29467

PIR 2015-3-2

LePain, D.L., Stanley, R.G., Harun, N.T., Helmold, K.P., and Tsigonis, R.M., 2015, Reconnaissance stratigraphic studies in the Susitna basin, Alaska, during the 2014 field season, in Gillis, R.J., ed., Overview of 2014 energy-focused studies in Susitna basin, south-central Alaska, and preliminary results: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-3-2, p. 5-10. https://doi.org/10.14509/29466

PIR 2015-3-1

Gillis, R.J., 2015, Overview of 2014 energy-focused field studies in Susitna basin, south-central Alaska, and preliminary results, in Gillis, R.J., ed., Overview of 2014 energy-focused studies in Susitna basin, south-central Alaska, and preliminary results: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-3-1, p. 1-4. https://doi.org/10.14509/29465

PIR 2015-3

Gillis, R.J., ed., 2015, Overview of 2014 energy-focused studies in Susitna basin, south-central Alaska, and preliminary results: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-3, 34 p. https://doi.org/10.14509/29408

PIR 2015-2

Dumoulin, J.A., and Whalen, M.T., 2015, Reconnaissance investigation of the Lisburne Group in the Cobblestone Creek area, Chandler Lake Quadrangle, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-2, 18 p. https://doi.org/10.14509/29403

PIR 2015-1

van der Kolk, D.A., Whalen, M.T., and Wartes, M.A., 2015, Source-rock potential of the Lower Cretaceous Pebble shale unit, northeastern Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2015-1, 37 p. https://doi.org/10.14509/29401

PIR 2014-5

Betka, P.M., and Gillis, R.J., 2014, Preliminary characterization of brittle deformation on the Iniskin Peninsula: Implications for the kinematic history of the Bruin Bay fault system, lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2014-5, 14 p. https://doi.org/10.14509/29130

PIR 2014-4

Kinsman, N.E.M., and Gould, A.I., 2014, Contemporary shoreline retreat rates at Meshik in Port Heiden, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2014-4, 21 p. https://doi.org/10.14509/27321

PIR 2014-3

Herriott, T.M., and Wartes, M.A., 2014, Geologic-mapping-based observations of the Middle Jurassic Chinitna Formation and Upper Jurassic Naknek Formation in the Tilted Hills, Iniskin Peninsula, Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2014-3, 23 p. https://doi.org/10.14509/27305

PIR 2014-2-6

Wartes, M.A., and Herriott, T.M., 2014, Discovery of oil-stained sandstone within the Chinitna Formation, northern Iniskin Peninsula, in Gillis, R.J., ed., Cook Inlet program 2013 field studies: Observations and preliminary interpretations from new 1:63,360-scale geologic mapping of the Iniskin Peninsula, lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2014-2-6, p. 29-31. https://doi.org/10.14509/27311

PIR 2014-2-5

Wartes, M.A., and Herriott, T.M., 2014, A new occurrence of oil-stained rocks within a small fault zone involving the Middle Jurassic Cynthia Falls Formation, Tuxedni Group, northern Iniskin Peninsula, in Gillis, R.J., ed., Cook Inlet program 2013 field studies: Observations and preliminary interpretations from new 1:63,360-scale geologic mapping of the Iniskin Peninsula, lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2014-2-5, p. 23-27. https://doi.org/10.14509/27310

PIR 2014-2-4

Betka, P.M., and Gillis, R.J., 2014, Preliminary kinematic evidence for right-lateral slip along a system of steeply-dipping faults in the hanging wall of the Bruin Bay Fault, Iniskin Peninsula, lower Cook Inlet, Alaska, in Gillis, R.J., ed., Cook Inlet program 2013 field studies: Observations and preliminary interpretations from new 1:63,360-scale geologic mapping of the Iniskin Peninsula, lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2014-2-4, p. 17-22. https://doi.org/10.14509/27309

PIR 2014-2-3

Bull, K.F., 2014, Preliminary observations: A facies architecture study of the Lower Jurassic Talkeetna Formation, Iniskin Peninsula, Alaska, in Gillis, R.J., ed., Cook Inlet program 2013 field studies: Observations and preliminary interpretations from new 1:63,360-scale geologic mapping of the Iniskin Peninsula, lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2014-2-3, p. 13-16. https://doi.org/10.14509/27308

PIR 2014-2-2

Herriott, T.M., and Wartes, M.A., 2014, Brief overview of geologic mapping of the Middle Jurassic Chinitna Formation and Upper Jurassic Naknek Formation in the Tilted Hills, Iniskin Peninsula, Cook Inlet, Alaska, in Gillis, R.J., ed., Cook Inlet program 2013 field studies: Observations and preliminary interpretations from new 1:63,360-scale geologic mapping of the Iniskin Peninsula, lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2014-2-2, p. 7-11. https://doi.org/10.14509/27307

PIR 2014-2-1

Gillis, R.J., Wartes, M.A., Herriott, T.M., Bull, K.F., Decker, P.L., and Betka, P.M., 2014, Overview of new 1:63,360-scale geologic mapping of the Iniskin Peninsula, lower Cook Inlet, Alaska, in Gillis, R.J., ed., Cook Inlet program 2013 field studies: Observations and preliminary interpretations from new 1:63,360-scale geologic mapping of the Iniskin Peninsula, lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2014-2-1, p. 3-6. https://doi.org/10.14509/27306

PIR 2014-2

Gillis, R.J., ed., 2014, Cook Inlet program 2013 field studies: Observations and preliminary interpretations from new 1:63,360-scale geologic mapping of the Iniskin Peninsula, lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2014-2, 31 p. https://doi.org/10.14509/27303

PIR 2014-1

Wolken, G.J., and Balazs, M.S., 2014, Inventory and preliminary assessment of geologic hazards in the Passage Canal-Portage Valley area, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2014-1, 15 p. https://doi.org/10.14509/27302

PIR 2013-6

Koehler, R.D., Reger, R.D., Sicard, K.R., and Spangler, E.R., 2013, Yukon River bridge landslide: Preliminary geologic and geotechnical evaluation: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-6, 69 p. https://doi.org/10.14509/25642

PIR 2013-5

Helmold, K.P., LePain, D.L., Wilson, M.D., and Peterson, C.S., 2013, Petrology and reservoir potential of Tertiary and Mesozoic sandstones, Cook Inlet, Alaska: A preliminary analysis of outcrop samples collected during 2007-2010 field seasons: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-5, 34 p. https://doi.org/10.14509/25035

PIR 2013-4

Gillis, R.J., Stanley, R.G., LePain, D.L., Mauel, D.J., Herriott, T.M., Helmold, K.P., Peterson, C.S., Wartes, M.A., and Shellenbaum, D.P., 2013, Status of a reconnaissance field study of the Susitna basin, 2011: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-4, 8 p. https://doi.org/10.14509/25015

PIR 2013-3

Kinsman, N.E.M., DeRaps, M.R., and Smith, J.R., 2013, Preliminary evaluation of coastal geomorphology and geohazards on 'Kigiqtam Iglua', an island northeast of Shishmaref, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-3, 15 p. https://doi.org/10.14509/24955

PIR 2013-2

Wartes, M.A., Gillis, R.J., Herriott, T.M., Stanley, R.G., Helmold, K.P., Peterson, C.S., and Benowitz, J.A., 2013, Summary of 2012 reconnaissance field studies related to the petroleum geology of the Nenana basin, interior Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-2, 13 p. https://doi.org/10.14509/24880

PIR 2013-1

Gillis, R.J., ed., 2013, Overview of 2012 field studies: Upper Alaska Peninsula and west side of lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-1, 48 p. https://doi.org/10.14509/24824

PIR 2013-1A

Gillis, R.J., 2013, Overview of 2012 field studies: Upper Alaska Peninsula and west side of lower Cook Inlet, Alaska, in Gillis, R.J., ed., Overview of 2012 field studies: Upper Alaska Peninsula and west side of lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-1A, p. 1-4. https://doi.org/10.14509/24844

PIR 2013-1B

Stanley, R.G., Herriott, T.M., LePain, D.L., Helmold, K.P., and Peterson, C.S., 2013, Reconnaissance studies of potential petroleum source rocks in the Middle Jurassic Tuxedni Group near Red Glacier, eastern slope of Iliamna Volcano, in Gillis, R.J., ed., Overview of 2012 field studies: Upper Alaska Peninsula and west side of lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-1B, p. 5-9. https://doi.org/10.14509/24845

PIR 2013-1C

Helmold, K.P., 2013, Reservoir quality of sandstones in the Naknek and Kaguyak Formations: Field observations, in Gillis, R.J., ed., Overview of 2012 field studies: Upper Alaska Peninsula and west side of lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-1C, p. 11-12. https://doi.org/10.14509/24846

PIR 2013-1D

Gillis, R.J., Maley, M.R., Frohman, R.A., and Peterson, C.S., 2013, Fracture studies in Upper Cretaceous and Upper Jurassic strata on the upper Alaska Peninsula and lower Cook Inlet, in Gillis, R.J., ed., Overview of 2012 field studies: Upper Alaska Peninsula and west side of lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-1D, p. 13-17. https://doi.org/10.14509/24847

PIR 2013-1E

Stanley, R.G., Herriott, T.M., Helmold, K.P., Gillis, R.J., and Lillis, P.G., 2013, Hydrocarbon-bearing sandstone in the Upper Jurassic Naknek Formation on the south shore of Kamishak Bay, in Gillis, R.J., ed., Overview of 2012 field studies: Upper Alaska Peninsula and west side of lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-1E, p. 19-23. https://doi.org/10.14509/24848

PIR 2013-1F

Wartes, M.A., Decker, P.L., Stanley, R.G., Herriott, T.M., Helmold, K.P., and Gillis, R.J., 2013, Preliminary stratigraphy and facies analysis of the Upper Cretaceous Kaguyak Formation, including a brief summary of newly discovered oil stain, upper Alaska Peninsula, in Gillis, R.J., ed., Overview of 2012 field studies: Upper Alaska Peninsula and west side of lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-1F, p. 25-32. https://doi.org/10.14509/24849

PIR 2013-1G

Gillis, R.J., Swenson, R.F., Wartes, M.A., and Frohman, R.A., 2013, Reconnaissance investigations of the Bruin Bay fault system along the western margin of lower Cook Inlet and upper Alaska Peninsula, in Gillis, R.J., ed., Overview of 2012 field studies: Upper Alaska Peninsula and west side of lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-1G, p. 33-37. https://doi.org/10.14509/24850

PIR 2013-1H

Wartes, M.A., Herriott, T.M., Helmold, K.P., and Gillis, R.J., 2013, Preliminary stratigraphic interpretation of the Naknek Formation: Evidence for Late Jurassic activity on the Bruin Bay fault, Iniskin Peninsula, lower Cook Inlet, in Gillis, R.J., ed., Overview of 2012 field studies: Upper Alaska Peninsula and west side of lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-1H, p. 39-46. https://doi.org/10.14509/24851

PIR 2013-1I

Gillis, R.J., 2013, Acknowledgments and references cited, in Gillis, R.J., ed., Overview of 2012 field studies: Upper Alaska Peninsula and west side of lower Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2013-1I, p. 47-48. https://doi.org/10.14509/24852

PIR 2012-2

Koehler, R.D., and Carver, G.A., 2012, Active and potentially active faults along the Alaska Highway corridor, Tetlin Junction to the Canada border: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2012-2, 23 p. https://doi.org/10.14509/23923

PIR 2012-1A

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 & Geophysical Surveys Preliminary Interpretive Report 2012-1A, 25 p., 2 sheets, scale 1:63,360. https://doi.org/10.14509/23443

PIR 2012-1B

Hubbard, T.D., Reger, R.D., and Gallagher, P.E., 2013, Engineering - geologic map of the Alaska Highway corridor, Tetlin Junction to Canada border, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2012-1B, 2 sheets, scale 1:63,360. https://doi.org/10.14509/24624

PIR 2012-1C

Reger, R.D., Hubbard, T.D., and Gallagher, P.E., 2012, Reconnaissance interpretation of 1978-1981 permafrost, Alaska Highway corridor, Tetlin Junction to Canada border, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2012-1C, 27 p., 2 sheets, scale 1:63,360. https://doi.org/10.14509/23444

PIR 2011-1

Koehler, R.D., and Reger, R.D., 2011, Reconnaissance evaluation of the Lake Clark fault, Tyonek area, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2011-1, 8 p. https://doi.org/10.14509/22221

PIR 2010-1

Carver, G.A., Bemis, S.P., Solie, D.N., Castonguay, S.R., and Obermiller, K.E., 2010, Active and potentially active faults in or near the Alaska Highway corridor, Dot Lake to Tetlin Junction, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2010-1, 42 p. https://doi.org/10.14509/21121

PIR 2009-8

LePain, D.L., ed., 2009, Preliminary results of recent geologic investigations in the Homer-Kachemak Bay area, Cook Inlet basin: Progress during the 2006-2007 field season: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2009-8, 187 p. https://doi.org/10.14509/20161

PIR 2009-8A

LePain, D.L., Wartes, M.A., McCarthy, P.J., Stanley, R.G., Silliphant, L.J., Peterson, Shaun, Shellenbaum, D.P., Helmold, K.P., Decker, P.L., Mongrain, J.R., and Gillis, R.J., 2009, Facies associations, sand body geometry, and depositional systems in Late Oligocene-Pliocene Strata, southern Kenai Peninsula, Cook Inlet, Alaska: Report on progress during the 2006-07 field season, in LePain, D.L., ed., Preliminary results of recent geologic investigations in the Homer-Kachemak Bay area, Cook Inlet basin: Progress during the 2006-2007 field season: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2009-8A, p. 1-97. https://doi.org/10.14509/20162

PIR 2009-8B

Finzel, E.S., Ridgway, K.D., and LePain, D.L., 2009, Sedimentology of an Oligocene-Miocene incised paleovalley, Tyonek Formation, Cook Inlet basin, Alaska, in LePain, D.L., ed., Preliminary results of recent geologic investigations in the Homer-Kachemak Bay area, Cook Inlet basin: Progress during the 2006-2007 field season: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2009-8B, p. 99-107. https://doi.org/10.14509/20163

PIR 2009-8C

Blodgett, R.B., 2009, Report on day trip (5/16/07) to visit Mesozoic rocks exposed in Port Graham and near Seldovia, southern Kenai Peninsula, in LePain, D.L., ed., Preliminary results of recent geologic investigations in the Homer-Kachemak Bay area, Cook Inlet basin: Progress during the 2006-2007 field season: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2009-8C, p. 109-116. https://doi.org/10.14509/20164

PIR 2009-8D

Loveland, Andrea, 2009, Mercury injection capillary pressure results from outcrop samples in the Homer area of Cook Inlet, in LePain, D.L., ed., Preliminary results of recent geologic investigations in the Homer-Kachemak Bay area, Cook Inlet basin: Progress during the 2006-2007 field season: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2009-8D, p. 117-187. https://doi.org/10.14509/20165

PIR 2009-7

Harris, E.E., Delaney, P.R., Mull, C.G., LePain, D.L., and Burns, P.A.C., 2009, Geologic map of the Kanayut River area, Chandler Lake Quadrangle, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2009-7, 1 sheet, scale 1:63,360. https://doi.org/10.14509/19781

PIR 2009-6A

Reger, R.D., Hubbard, T.D., and Carver, G.A., 2011, Surficial geology of Alaska Highway corridor, Robertson River to Tetlin Junction, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2009-6A, 53 p., 4 sheets, scale 1:63,360. https://doi.org/10.14509/19741

PIR 2009-6B

Hubbard, T.D., and Reger, R.D., 2010, Engineering - geologic map of the Alaska Highway corridor, Robertson River to Tetlin Junction, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2009-6B, 4 sheets, scale 1:63,360. https://doi.org/10.14509/19742

PIR 2009-6C

Reger, R.D., and Hubbard, T.D., 2010, Reconnaissance interpretation of 1978-1983 permafrost, Alaska Highway corridor, Robertson River to Tetlin Junction, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2009-6C, 13 p., 4 sheets, scale 1:63,360. https://doi.org/10.14509/19743

PIR 2009-5

Mull, C.G., Harris, E.E., Delaney, P.R., and Swenson, R.F., 2009, Geology of the Cobblestone Creek-May Creek area, east-central Brooks Range Foothills, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2009-5, 40 p., 1 sheet, scale 1:63,360. https://doi.org/10.14509/19661

PIR 2009-4

Finzel, E.S., Gillis, R.J., Ridgway, K.D., and LePain, D.L., 2009, Preliminary evaluation of basin margin exhumation and provenance of Cenozoic strata, Chuitna and Beluga rivers area, Cook Inlet forearc basin, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2009-4, 16 p. https://doi.org/10.14509/19641

PIR 2009-3

Gillis, R.J., LePain, D.L., Ridgway, K.D., and Finzel, E.S., 2009, A reconnaissance view of an unnamed fault near Capps Glacier, northwestern Cook Inlet basin, and its potential as a regional-scale, basin-controlling structure: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2009-3, 9 p. https://doi.org/10.14509/19503

PIR 2009-2

Reger, R.D., 2009, Reinterpretation of the Kaloa deposits near Granite Point, northwestern Cook Inlet, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2009-2, 8 p. https://doi.org/10.14509/18241

PIR 2008-3A

Reger, R.D., Stevens, D.S.P., and Solie, D.N., 2008, Surficial-geologic map, Delta Junction to Dot Lake, Alaska Highway corridor: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2008-3A, 48 p., 2 sheets, scale 1:63,360. https://doi.org/10.14509/17961

PIR 2008-3B

Reger, R.D., and Solie, D.N., 2008, Engineering - geologic map, Alaska Highway corridor, Delta Junction to Dot Lake, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2008-3B, 2 sheets, scale 1:63,360. https://doi.org/10.14509/17981

PIR 2008-3C

Reger, R.D., and Solie, D.N., 2008, Reconnaissance interpretation of permafrost, Alaska Highway corridor, Delta Junction to Dot Lake, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2008-3C, 10 p., 2 sheets, scale 1:63,360. https://doi.org/10.14509/17621

PIR 2008-3D

Carver, G.A., Bemis, S.P., Solie, D.N., and Obermiller, K.E., 2008, Active and potentially active faults in or near the Alaska Highway corridor, Delta Junction to Dot Lake, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2008-3D, 32 p. https://doi.org/10.14509/17901

PIR 2008-2

Blodgett, R.B., Finzel, E.S., Reifenstuhl, R.R., Clautice, K.H., Ridgway, K.D., and Gillis, R.J., 2008, Jurassic through Pliocene age megafossil samples collected in 2005 by the Alaska Divison of Geological & Geophysical Surveys from the Bristol Bay-Port Moller area, Alaska Peninsula: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2008-2, 12 p. https://doi.org/10.14509/16501

PIR 2008-1

Wartes, M.A., and Decker, P.L., eds., 2008, Preliminary results of recent geologic field investigations in the Brooks Range Foothills and North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2008-1, 206 p. https://doi.org/10.14509/16083

PIR 2008-1A

Wartes, M.A., and Decker, P.L., 2008, Overview of recent geologic field investigations, North Slope and Brooks Range foothills, Alaska, in Wartes, M.A., and Decker, P.L., eds., Preliminary results of recent geologic field investigations in the Brooks Range Foothills and North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2008-1A, p. 1-10, 1 sheet. https://doi.org/10.14509/16085

PIR 2008-1B

Wartes, M.A., 2008, Measured section and facies analysis of the Lower Cretaceous Fortress Mountain Formation, Atigun syncline, northern Alaska, in Wartes, M.A., and Decker, P.L., eds., Preliminary results of recent geologic field investigations in the Brooks Range Foothills and North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2008-1B, p. 11-24, 1 sheet. https://doi.org/10.14509/16086

PIR 2008-1C

Wartes, M.A., 2008, Evaluation of stratigraphic continuity between the Fortress Mountain and Nanushuk Formations in the central Brooks Range foothills--Are they partly correlative?, in Wartes, M.A., and Decker, P.L., eds., Preliminary results of recent geologic field investigations in the Brooks Range Foothills and North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2008-1C, p. 25-39. https://doi.org/10.14509/16087

PIR 2008-1D

LePain, D.L., Decker, P.L., and Wartes, M.A., 2008, Measured sections and preliminary interpretations of the Nanushuk Formation exposed along the Colville River near the confluences with the Awuna and Killik rivers, in Wartes, M.A., and Decker, P.L., eds., Preliminary results of recent geologic field investigations in the Brooks Range Foothills and North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2008-1D, p. 41-45, 4 sheets. https://doi.org/10.14509/16088

PIR 2008-1E

Decker, P.L., and Wartes, M.A., 2008, Geochemistry of the Aupuk gas seep along the Colville River--Evidence for a thermogenic origin, in Wartes, M.A., and Decker, P.L., eds., Preliminary results of recent geologic field investigations in the Brooks Range Foothills and North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2008-1E, p. 47-54. https://doi.org/10.14509/16084

PIR 2008-1F

Decker, P.L., Wartes, M.A., Wallace, W.K., Houseknecht, D.W., Schenk, C.J., Gillis, R.J., and Mongrain, J.R., 2008, Stratigraphic and structural investigations in the Ivishak River and Gilead Creek areas: Progress during 2007, in Wartes, M.A., and Decker, P.L., eds., Preliminary results of recent geologic field investigations in the Brooks Range Foothills and North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2008-1F, p. 55-83, 1 sheet. https://doi.org/10.14509/16089

PIR 2008-1G

LePain, D.L., Kirkham, R.A., Gillis, R.J., and Mongrain, J.R., 2008, Turonian-Campanian strata east of the Trans-Alaska Pipeline corridor, North Slope foothills, Alaska: Progress during the 2001-02 and 2007 field seasons, in Wartes, M.A., and Decker, P.L., eds., Preliminary results of recent geologic field investigations in the Brooks Range Foothills and North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2008-1G, p. 85-134. https://doi.org/10.14509/16090

PIR 2007-2

Decker, P.L., 2007, Brookian sequence stratigraphic correlations, Umiat Field to Milne Point Field, west-central North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2007-2, 19 p., 1 sheet. https://doi.org/10.14509/15758

PIR 2007-1

Peapples, P.R., Wallace, W.K., Wartes, M.A., Swenson, R.F., Mull, C.G., Dumoulin, J.A., Harris, E.E., Finzel, E.S., Reifenstuhl, R.R., and Loveland, A.M., 2007, Geologic map of the Siksikpuk River area, Chandler Lake Quadrangle, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2007-1, 1 sheet, scale 1:63,360. https://doi.org/10.14509/15757

PIR 2006-1

Barker, J.C., 2006, Evidence for geothermal tungsten & germanium mineralization in Eocene coal and associated sediments, Fort Hamlin Hills, area, interior, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2006-1, 24 p. https://doi.org/10.14509/14862

PIR 2005-7

Decker, P.L., Finzel, E.S., Ridgway, K.D., Reifenstuhl, R.R., and Blodgett, R.B., 2005, Preliminary summary of the 2005 field season: Port Moller, Herendeen Bay, and Dillingham areas, Bristol Bay basin, Alaska Peninsula: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2005-7, 55 p., 2 sheets. https://doi.org/10.14509/7190

PIR 2005-6

Blodgett, R.B., and Clautice, K.H., 2005, Oil and gas seeps of the Puale Bay - Becharof Lake - Wide Bay region, northern Alaska Peninsula: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2005-6, 13 p., 1 sheet, scale 1:250,000. https://doi.org/10.14509/7189

PIR 2005-5

Meyer, J.F., 2005, Principal facts for gravity data collected in the northern Susitna basin area, southcentral Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2005-5, 12 p. https://doi.org/10.14509/7186

PIR 2005-4

Finzel, E.S., Reifenstuhl, R.R., Decker, P.L., and Ridgway, K.D., 2005, Sedimentology, stratigraphy, and hydrocarbon reservoir-source rock potential, using surface and subsurface data, of Tertiary and Mesozoic strata, Bristol Bay basin and Alaska Peninsula: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2005-4, 69 p. https://doi.org/10.14509/7184

PIR 2005-3

White, J.G., 2005, Preliminary investigation of the Lisburne Group, upper Nanushuk River region, central Brooks Range, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2005-3, 23 p. https://doi.org/10.14509/7164

PIR 2005-2

Finzel, E.S., and McCarthy, P.J., 2005, Architectural analysis of fluvial conglomerate in the Nanushuk Formation, Brooks Range Foothills, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2005-2, 18 p. https://doi.org/10.14509/7021

PIR 2005-1

Reifenstuhl, R.R., Bailey, R.D., and Finzel, E.S., 2005, Bristol Bay and Alaska Peninsula 2004: Fieldwork and sample analyses compilation report: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2005-1, 20 p. https://doi.org/10.14509/7001

PIR 2004-5

Reifenstuhl, R.R., and Loveland, Andrea, 2004, Reservoir characterization study: porosity and permeability of 148 Tertiary to Mississippian age outcrop samples, east-central Brooks Range Foothills and North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2004-5, 21 p. https://doi.org/10.14509/3312

PIR 2004-4A

DGGS, 2005, Report not published: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2004-4A. https://doi.org/10.14509/7185

PIR 2004-4B

Peapples, P.R., 2004, Summary of coalbed methane studies, Delta Junction area, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2004-4B, 11 p. https://doi.org/10.14509/6970

PIR 2004-3

Athey, J.E., and Craw, P.A., 2004, Geologic maps of the Livengood SW C-3 and SE C-4 quadrangles, Tolovana mining district, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2004-3, 24 p. https://doi.org/10.14509/3308

PIR 2004-3A

Athey, J.E., Werdon, M.B., Newberry, R.J., Szumigala, D.J., Craw, P.A., and Hicks, S.A., 2004, Geologic map of the Livengood SW C-3 and SE C-4 quadrangles, Tolovana mining district, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2004-3A, 1 sheet, scale 1:50,000. https://doi.org/10.14509/3309

PIR 2004-3B

Athey, J.E., Szumigala, D.J., Newberry, R.J., Werdon, M.B., and Hicks, S.A., 2004, Bedrock geologic map of the Livengood SW C-3 and SE C-4 quadrangles, Tolovana mining district, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2004-3B, 1 sheet, scale 1:50,000. https://doi.org/10.14509/3310

PIR 2004-2

Elder, W.P., and Loveland, Andrea, 2004, 2003 Megafossil report from the Chandler Lake Quadrangle, North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2004-2, 5 p. https://doi.org/10.14509/3235

PIR 2004-1

DGGS, 2004, Report not published: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2004-1. https://doi.org/10.14509/25487

PIR 2003-3

Meyer, J.F., and Boggess, P.L., 2003, Principal facts for gravity data collected in the Susitna area, southcentral Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2003-3, 13 p. https://doi.org/10.14509/2945

PIR 2003-2

Meyer, J.F., and Boggess, P.L., 2003, Principal facts for gravity data collected in the Copper River basin area, southcentral Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2003-2, 12 p. https://doi.org/10.14509/2944

PIR 2003-1

McCarthy, P.J., 2003, Alluvial facies and paleosols in the Cretaceous Nanushuk formation, Kanayut River, North Slope, Alaska, Preliminary results from the 2001 field season: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2003-1, 19 p. https://doi.org/10.14509/2920

PIR 2002-5

LePain, D.L., Blodgett, R.B., and Clough, J.G., 2003, Sedimentology and hydrocarbon source rock potential of Miocene-Oligocene strata, McGrath Quadrangle: An outcrop analog for the Holitna basin: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2002-5, 75 p. https://doi.org/10.14509/2870

PIR 2002-4

Werdon, M.B., Riehle, J.R., Schmidt, J.M., Newberry, R.J., and Pessel, G.H., 2002, Geologic map of the Iron Creek area, Talkeetna Mountains B-5 Quadrangle, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2002-4, 1 sheet, scale 1:63,360. https://doi.org/10.14509/7144

PIR 2002-3

Stevens, D.S.P., 2014, Engineering-geologic map of the Dalton Highway from Galbraith Lake to Slope Mountain, southern Arctic Foothills, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2002-3, 1 sheet, scale 1:63,360. https://doi.org/10.14509/25486

PIR 2002-2

Harris, E.E., Mull, C.G., Reifenstuhl, R.R., and Montayne, Simone, 2002, Geologic map of the Dalton Highway (Atigun Gorge to Slope Mountain) area, southern Arctic Foothills, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2002-2, 1 sheet, scale 1:63,360. https://doi.org/10.14509/2867

PIR 2002-1A

Szumigala, D.J., Newberry, R.J., Werdon, M.B., Athey, J.E., Stevens, D.S.P., Flynn, R.L., Clautice, K.H., and Craw, P.A., 2002, Geologic map of the Eagle A-1 Quadrangle, Fortymile mining district: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2002-1A, 1 sheet, scale 1:63,360. https://doi.org/10.14509/2863

PIR 2002-1B

Szumigala, D.J., Newberry, R.J., Werdon, M.B., Athey, J.E., Flynn, R.L., and Clautice, K.H., 2002, Bedrock geologic map of the Eagle A-1 Quadrangle, Fortymile mining district: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2002-1B, 1 sheet, scale 1:63,360. https://doi.org/10.14509/2864

PIR 2002-1C

Stevens, D.S.P., and Burns, P.A.C., 2010, Surficial-geologic map of the Eagle A-1 Quadrangle, Fortymile mining district: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2002-1C, 1 sheet, scale 1:63,360. https://doi.org/10.14509/22081

PIR 2002-1D

Stevens, D.S.P., 2012, Engineering-geologic map of the Eagle A-1 Quadrangle, Fortymile mining district, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2002-1D, 1 sheet, scale 1:63,360. https://doi.org/10.14509/24544

PIR 2001-5

Werdon, M.B., Newberry, R.J., Szumigala, D.J., and Burns, L.E., 2001, Reconnaissance bedrock geology of the Pogo area, Big Delta B-2 and B-3 quadrangles, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2001-5, 1 sheet, scale 1:63,360. https://doi.org/10.14509/2673

PIR 2001-4

Zippi, P.A., 2001, Palynology of Tertiary Holitna outcrops, McGrath and Talkeetna quadrangles: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2001-4, 22 p. https://doi.org/10.14509/2736

PIR 2001-3A

Werdon, M.B., Newberry, R.J., Szumigala, D.J., and Pinney, D.S., 2001, Geologic map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2001-3A, 1 sheet, scale 1:63,360. https://doi.org/10.14509/2669

PIR 2001-3B

Werdon, M.B., Newberry, R.J., and Szumigala, D.J., 2001, Bedrock geologic map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2001-3B, 1 sheet, scale 1:63,360. https://doi.org/10.14509/2670

PIR 2001-3C

Pinney, D.S., 2001, Surficial-geologic map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2001-3C, 1 sheet, scale 1:63,360. https://doi.org/10.14509/2671

PIR 2001-3D

Pinney, D.S., 2001, Engineering - geologic map of the Eagle A-2 Quadrangle, Fortymile mining district, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2001-3D, 1 sheet, scale 1:63,360. https://doi.org/10.14509/2672

PIR 2001-2

DGGS, 2001, Report not published: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2001-2. https://doi.org/10.14509/25485

PIR 2001-1

DGGS, 2001, Report not published: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2001-1. https://doi.org/10.14509/25484

PIR 2000-9

Mull, C.G., 2000, Summary report on the geology and hydrocarbon potential of the foothills of the northwestern De Long Mountains, western Brooks Range, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2000-9, 16 p. https://doi.org/10.14509/2668

PIR 2000-8

Mickey, M.B., and Haga, Hideyo, 2000, Biostratigraphy report, 129 outcrop samples, western De Long Mountains (Tingmerkpuk) North Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2000-8, 99 p., 1 sheet, scale 1:250,000. https://doi.org/10.14509/2667

PIR 2000-7

Werdon, M.B., Riehle, J.R., Schmidt, J.M., Newberry, R.J., and Pessel, G.H., 2000, Preliminary geologic map of the Iron Creek area, Talkeetna Mountains B-5 Quadrangle, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2000-7, 1 sheet, scale 1:63,360. https://doi.org/10.14509/2735

PIR 2000-6

Szumigala, D.J., Newberry, R.J., Werdon, M.B., Finseth, B.A., and Pinney, D.S., 2000, Preliminary bedrock geologic map of a portion of the Fortymile mining district, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2000-6, 1 sheet, scale 1:63,360. https://doi.org/10.14509/2734

PIR 2000-5

DGGS, 2000, Report not published: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2000-5. https://doi.org/10.14509/25483

PIR 2000-4

DGGS, 2000, Report not published: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2000-4. https://doi.org/10.14509/25482

PIR 2000-3

Vohden, Jim, 2000, Technical review of the September 1999 groundwater disturbance near Ester, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2000-3, 68 p. https://doi.org/10.14509/2666

PIR 2000-2

Tyler, Roger, Scott, A.R., and Clough, J.G., 2000, Coalbed methane potential and exploration targets for rural Alaska communities: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2000-2, 169 p. https://doi.org/10.14509/2733

PIR 2000-1

LePain, D.L., Blodgett, R.B., Clough, J.G., Ryherd, T.J., and Smith, T.N., 2000, Generalized stratigraphy and petroleum potential of the Holitna region, southwest Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2000-1, 34 p., 1 sheet, scale 1:250,000. https://doi.org/10.14509/2665

PIR 1999-2

LePain, D.L., and Adams, K.E., 1999, Stratigraphy and depositional setting of the Tingmerkpuk sandstone (Neocomian), northwestern De Long Mountains, western Arctic Slope, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 1999-2, 5 p., 1 sheet, scale 1:127. https://doi.org/10.14509/2244

PIR 1999-1

Combellick, R.A., 1999, Simplified geologic map and cross sections of central and east Anchorage, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 1999-1, 13 p., 2 sheets. https://doi.org/10.14509/2243