Northeast Tanacross

Project Details

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• Project ID:

  1537

• Nickname/Abbreviation:

  NE Tanacross

• Parent Project:

  Mineral Resources Section projects

• Status:

  Complete

• Description:

  Geologic mapping and geochemical sampling project in northeast Tanacross, Tanacross D-1 and parts of C-1 and D-2 quadrangles. The purpose of this 2-phase project is to evaluate the area's mineral-resource potential and create a geologic map to help guide industry exploration efforts. The area contains known porphyry gold-copper-molybdenum systems, which are newly recognized as being spatially associated with high-angle fault systems, many of which can be identified in DGGS airborne geophysical surveys of the area. The 2017 DGGS northeast Tanacross geologic mapping was funded by the State of Alaska. The 2018 geologic mapping was funded by U.S. Geological Survey STATEMAP grant no. G18AC00137. Find field photos taken during this project.

• Project Date(s):

  2017 - 2019

• Primary Contact:

  Twelker, Evan

• DGGS section:

  Mineral Resources

• Alternate Url:

  Find out more...

• Project Participants:

  Rainer J. Newberry, Melanie B. Werdon, Jennifer E. Athey, Trent D. Hubbard, Karri R. Sicard, Evan Twelker, Alicja Wypych, Mandy L. Willingham, Travis J. Naibert, W. Chris Wyatt, Alec C. Lockett

• Stations/Samples:

  View list

Publications

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RI 2020-9

Wypych, Alicja, ed., 2021, Northeast Tanacross geologic mapping project, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2020-9, 75 p. https://doi.org/10.14509/30537

RI 2020-9A

Wypych, Alicja, 2021, Introduction to the northeast Tanacross geologic mapping project, in Wypych, Alicja, ed., Northeast Tanacross geologic mapping project, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2020-9A, p. 1-8. https://doi.org/10.14509/30538

RI 2020-9B

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., 2021, Northeast Tanacross geologic map and map units and descriptions, in Wypych, Alicja, ed., Northeast Tanacross geologic mapping project, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2020-9B, p. 9-26, 1 sheet, scale 1:63,360. https://doi.org/10.14509/30539

RI 2020-9C

Naibert, T.J., Wypych, Alicja, Twelker, Evan, and Benowitz, J.A., 2021, Metamorphic cooling history of the Fortymile River and Lake George assemblages from 40Ar/39Ar geochronology from the northeast Tanacross and southeast Eagle quadrangles, Alaska, in Wypych, Alicja, ed., Northeast Tanacross geologic mapping project, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2020-9C, p. 27-42. https://doi.org/10.14509/30540

RI 2020-9D

Naibert, T.J., 2021, Structural geology observations in the northeast Tanacross map area, in Wypych, Alicja, ed., Northeast Tanacross geologic mapping project, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2020-9D, p. 43-52. https://doi.org/10.14509/30541

RI 2020-9E

Wypych, Alicja, 2021, Geochemical interpretation of samples of igneous rocks from northeast Tanacross, in Wypych, Alicja, ed., Northeast Tanacross geologic mapping project, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2020-9E, p. 53-61. https://doi.org/10.14509/30542

RI 2020-9F

Twelker, Evan, and Newberry, R.J., 2021, Observations on the economic geology of the northeast Tanacross map area, in Wypych, Alicja, ed., Northeast Tanacross geologic mapping project, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2020-9F, p. 62-71. https://doi.org/10.14509/30557

RI 2020-9G

Emond, A.M., and Wypych, Alicja, 2021, Magnetic modeling of the northeast Tanacross map area, in Wypych, Alicja, ed., Northeast Tanacross geologic mapping project, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2020-9G, p. 72-75. https://doi.org/10.14509/30558

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

RDF 2020-12

Naibert, T.J., Benowitz, J.A., Wypych, Alicja, Sicard, K.R., and Twelker, Evan, 2020, 40Ar/39Ar data from the Tanacross D-1 and parts of the D-2, C-1, and C-2 quadrangles, Alaska: Alaska Division of Geological & Geophysical Surveys Raw Data File 2020-12, 35 p. https://doi.org/10.14509/30466

RDF 2019-5

Todd, Erin, Wypych, Alicja, and Kylander-Clark, Andrew, 2019, U-Pb and Lu-Hf isotope, age, and trace element data from zircon separates from the Tanacross D-1, and parts of D-2, C-1, and C-2 quadrangles: Alaska Division of Geological & Geophysical Surveys Raw Data File 2019-5, 10 p. https://doi.org/10.14509/30198

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

RDF 2018-4

Wypych, Alicja, Naibert, T.J., Athey, J.E., Newberry, R.J., Sicard, K.R., Twelker, Evan, Werdon, M.B., Willingham, A.L., and Wyatt, W.C., 2018, Major-oxide and trace-element geochemical data from rocks collected in 2018 for the Northeast Tanacross project, Tanacross C-1, C-2, D-1, and D-2 quadrangles, Alaska: Alaska Division of Geological & Geophysical Surveys Raw Data File 2018-4, 4 p. https://doi.org/10.14509/30113

RDF 2018-3

Naibert, T.J., Benowitz, J.A., Wypych, Alicja, Sicard, K.R., and Twelker, Evan, 2018, 40Ar/39Ar data from the Tanacross D-1 and D-2, Big Delta B-4 and B-5, and Mount Hayes A-6 quadrangles, Alaska: Alaska Division of Geological & Geophysical Surveys Raw Data File 2018-3, 15 p. https://doi.org/10.14509/30112

RDF 2017-10

Wypych, Alicja, Twelker, Evan, Athey, J.E., Lockett, A.C., Naibert, T.J., Sicard, K.R., Werdon, M.B., and Willingham, A.L., 2017, Major-oxide and trace-element geochemical data from rocks collected in the Tanacross C-1, D-1, and D-2 quadrangles, Alaska in 2017: Alaska Division of Geological & Geophysical Surveys Raw Data File 2017-10, 4 p. https://doi.org/10.14509/29778

Posters and Presentations

Wypych, Alicja and others, 2018

Wypych, Alicja, Twelker, Evan, Athey, J.E., Hubbard, T.D., Naibert, T.J., Newberry, R.J., Sicard, K.R., Werdon, M.B., Willingham, A.L., and Wyatt, W.C., 2018, New geologic investigations of northeast Tanacross (presentation): Alaska Miners Association Annual Convention, Anchorage, Alaska, November 4-10, 2018: Alaska Division of Geological & Geophysical Surveys, 37 p. https://doi.org/10.14509/30123