DGGS PIR 2026-3E

Bedrock geologic map of the upper Goodpaster River area, Big Delta quadrangle, Alaska

• Authors:

  Twelker, Evan, Newberry, R.J., Wilson, K.R., Szumigala, D.J., Muller, I.P., and Truskowski, C.M.

• Publication Date:

  May 2026

• Publisher:

  Alaska Division of Geological & Geophysical Surveys 

• Ordering Info:

  Download below for free or see our publication sales page to order a hard copy.

• Quadrangle(s):

  Big Delta

• Citation ID:

  32116

Bibliographic Reference

Twelker, Evan, Newberry, R.J., Wilson, K.R., Szumigala, D.J., Muller, I.P., and Truskowski, C.M., 2026, Bedrock geologic map of the upper Goodpaster River area, Big Delta quadrangle, Alaska, in Twelker, Evan, ed., Geologic investigation of the Chena-Pogo area, interior Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2026-3E, 1 sheet, scale 1:100,000. https://doi.org/10.14509/32116

Publication Products

• This publication is part of a larger work. Please see PIR 2026-3 for more information.

• Maps & Other Oversized Sheets

  • Sheet 1, Bedrock geologic map of the upper Goodpaster River area, Big Delta quadrangle, Alaska, scale 1:100,000 (6.0 M)

Keywords

Allochthon; Amphibolite; Andesite; Argillite; Basalt; Batholith; Bedrock; Carbonates; Conglomerate; Correlation; Devonian; DGGS; Dike; Diorite; Dolomite; Dolostone; Dunite; Exhumation; Exploration; Fairbanks Schist; Fairbanks-Chena Assemblage; Faults; Fossils; Gabbro; Garnet; Geodatabase; Geologic; Geologic Map; Geological Process; Geology; Gneiss; Granite; Granodiorite; Graphite; Graywacke; Greenschist; Greenstone; Hadrosaur; Hornfels; Igneous; Igneous Rocks; Interpretation; Intrusive; Jade; Lake George Assemblage; Late Cretaceous; Late Devonian; Lithology; Magnetic Data; Magnetic Susceptibility; Marble; Metagenesis; Metaigneous Units; Metals; Metamorphic; Metamorphic Deposits; Metamorphic Grade; Metamorphic Minerals; Metamorphic Rocks; Metamorphism; Metasedimentary Rocks; Metavolcanic rocks; Metavolcanics; Mineral Assessment; Mineral Deposits; Mineral Development; Mineral Exploration; Mineral Resources; Mineralogy; Minerals; Mining; Mississippian; Monazite; Monzodiorite; Monzogranite; Monzonite; Orthogneiss; Outcrop; Paleocene; Paleozoic; Pegmatite; Petrogenesis; Petrographic; Petrography; Petrology; Phyllite; Plagioclase; Plutonic; Plutonic Complex; Plutonic Hosted; Plutonic Rocks; Plutons; Porphyry; Precambrian; Proterozoic; Quartzite; Rare Earth Elements; Regional; Regional Metamorphism; Resource Assessment; Resource Evaluation; Resources; Rhyolite; Rock Properties; Rock Units; Rocks; Sandstone; Schist; Sediment; Sedimentary; Sedimentary Rocks; Serpentinite; Seventymile Terrane; Shale; Sillimanite; Skarn; Slate; Strategic and Critical Minerals Assessment Project; Strategic Minerals; Stratigraphy; Structural Geology; Talc; Tectonics; Terranes; Tonalite; Triassic; Ultramafic; Ultramafic Rocks; Undifferentiated Bedrock; Volcanic; Volcanic Rocks; Volcaniclastic; Yukon-Tanana Terrane; Yukon-Tanana Upland

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