43 results on '"Twelker, Evan"'
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2. 40AR/39AR GEOCHRONOLOGY DATA FROM THE TANACROSS AND EAGLE QUADRANGLES, ALASKA.
3. U-PB ZIRCON GEOCHRONOLOGY OF BEDROCK SAMPLES COLLECTED IN THE EAGLE AND TANACROSS QUADRANGLES, EASTERN ALASKA.
4. GEOCHEMICAL DATA FROM SAMPLES COLLECTED IN 2022 FOR THE MOUNT HARPER GEOLOGIC MAPPING PROJECT, BIG DELTA, MOUNT HAYES, AND EAGLE QUADRANGLES, ALASKA.
5. FIELD STATION LOCATIONS AND MAGNETIC SUSCEPTIBILITY DATA COLLECTED IN 2022 FOR THE MOUNT HARPER PROJECT, EAGLE, BIG DELTA, AND MOUNT HAYES QUADRANGLES, ALASKA.
6. BEDROCK GEOLOGIC MAP OF THE EASTERN MORAN AREA, TANANA B-6 AND C-6 QUADRANGLES, ALASKA.
7. CHAPTER F: ECONOMIC GEOLOGY OF THE LADUE RIVERMOUNT FAIRPLAY AREA.
8. CHAPTER B: METAMORPHISM OF THE LADUE RIVER-MOUNT FAIRPLAY AREA.
9. CHAPTER A: BEDROCK GEOLOGIC MAP OF THE LADUE RIVER-MOUNT FAIRPLAY AREA, TANACROSS AND NABESNA QUADRANGLES, ALASKA.
10. GEOLOGIC INVESTIGATION OF THE LADUE RIVER-MOUNT FAIRPLAY AREA, EASTERN ALASKA.
11. PRELIMINARY BEDROCK GEOLOGIC MAP DATABASE, NORTHEASTERN RICHARDSON MINING DISTRICT, ALASKA.
12. U-PB DETRITAL ZIRCON GEOCHRONOLOGY OF CRETACEOUS-CENOZOIC SEDIMENTAY ROCKS IN THE LADUE RIVER MOUNT FAIRPLAY AREA, ALASKA.
13. GEOCHEMICAL DATA FROM SAMPLES COLLECTED IN 2020 AND 2021 FOR THE WESTERN TANACROSS PROJECT, TANACROSS QUADRANGLE, ALASKA.
14. GEOCHEMICAL DATA FROM SAMPLES COLLECTED IN 2021 FOR THE TAYLOR MOUNTAIN PROJECT, TANACROSS AND EAGLE QUADRANGLES, ALASKA.
15. U-PB ZIRCON DATA AND AGES FOR BEDROCK SAMPLES FROM THE RICHARDSON MINING DISTRICT, BIG DELTA QUADRANGLE, ALASKA.
16. DGGS Completes Yukon-Tanana Upland Earth MRI Airborne Geophysics Program.
17. Updates on DGGS Geologic Mapping Efforts in Eastern Interior Alaska.
18. 40AR/39AR DATA FROM THE TANACROSS D-1 AND PARTS OF THE D-2, C-1, AND C-2 QUADRANGLES, ALASKA.
19. MINERAL OCCURRENCES IN THE TOK RIVER AREA, EASTERN ALASKA RANGE.
20. U-PB GEOCHRONOLOGY OF IGNEOUS AND DETRITAL ZIRCON SAMPLES FROM THE TOK RIVER AREA, EASTERN ALASKA RANGE, AND TALKEETNA MOUNTAINS, ALASKA.
21. ALASKA'S MINERAL INDUSTRY 2020.
22. EXPLANATION OF MAP UNITS: NORTHEASTERN TANACROSS GEOLOGIC MAP, TANACROSS D-1, D-2, C-1, AND C-2 QUADRANGLES, ALASKA.
23. MAJOR-OXIDE AND TRACE-ELEMENT GEOCHEMICAL DATA FROM ROCKS COLLECTED IN THE RICHARDSON MINING DISTRICT, BIG DELTA QUADRANGLE, ALASKA.
24. 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.
25. 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.
26. MAJOR-OXIDE AND TRACE-ELEMENT GEOCHEMICAL DATA FROM ROCKS COLLECTED IN 2019 FOR THE EASTERN TANACROSS PROJECT, TANACROSS AND PART OF NABESNA QUADRANGLES, ALASKA.
27. U-Pb AND Lu-Hf ISOTOPE, AGE, AND TRACE-ELEMENT DATA FROM ZIRCONS AT FOUR SITES IN THE WESTERN ALASKA RANGE AND TALKEETNA MOUNTAINS, ALASKA.
28. 40Ar/39Ar DATA FROM ROCKS COLLECTED IN THE WRANGELLIA MINERAL ASSESSMENT PROJECT AREA, MOUNT HAYES A-5 AND B-6 AND TALKEETNA MOUNTAINS D 2 QUADRANGLES, ALASKA.
29. MAJOR-OXIDE AND TRACE-ELEMENT GEOCHEMICAL DATA FROM ROCKS COLLECTED IN THE TOK RIVER AREA, TANACROSS A-5 AND A-6 QUADRANGLES, ALASKA IN 2016.
30. DGGS Earth MRI geologic mapping and geophysics program update.
31. FIELD STATION LOCATIONS AND MAGNETIC SUSCEPTIBILITY DATA COLLECTED IN 2020-2021 FOR THE WESTERN TANACROSS PROJECT, TANACROSS AND EAGLE QUADRANGLES, ALASKA.
32. FIELD STATION LOCATIONS AND MAGNETIC SUSCEPTIBILITY DATA COLLECTED IN 2021 FOR THE TAYLOR MOUNTAINPROJECT, TANACROSS AND EAGLE QUADRANGLES, ALASKA.
33. U-PB ZIRCON AGE DATA FROM META-IGNEOUS ROCKS IN THE CLEARWATER MOUNTAINS, MOUNT HAYES A-6 QUADRANGLE, ALASKA.
34. PRELIMINARY REPORT ON MINERAL OCCURRENCES IN THE TOK RIVER AREA, ALASKA.
35. Alaska's Mineral Industry 2015.
36. MAJOR-OXIDE AND TRACE-ELEMENT GEOCHEMICAL DATA FROM ROCKS COLLECTED IN 2015 IN THE WRANGELLIA MINERAL ASSESSMENT AREA, ALASKA.
37. EXPLANATION OF MAP UNITS: Geologic map of the Talkeetna Mountains C-4 Quadrangle and adjoining areas, central Alaska (1:50,000 scale).
38. 40AR/39AR DATA FROM THE TALKEETNA MOUNTAINS C-4 QUADRANGLE AND ADJOINING AREAS, CENTRAL ALASKA.
39. MAJOR-OXIDE AND TRACE-ELEMENT GEOCHEMICAL DATA FROM ROCKS COLLECTED IN 2014 IN THE WRANGELLIA MINERAL ASSESSMENT AREA, TALKEETNA MOUNTAINS C-4, C-3, AND B-4 QUADRANGLES, ALASKA.
40. MAJOR-OXIDE AND TRACE-ELEMENT GEOCHEMICAL DATA FROM ROCKS COLLECTED IN 2015 IN THE TOK AREA, TANACROSS A-5, A-6, AND PARTS OF ADJACENT QUADRANGLES, ALASKA.
41. FIELD STATION LOCATIONS AND MAGNETIC SUSCEPTIBILITY DATA COLLECTED IN 2019 FOR THE EASTERN TANACROSS PROJECT, TANACROSS AND NABESNA QUADRANGLES, ALASKA.
42. Cretaceous to Tertiary magmatism and associated mineralization in the Lime Hills C-1 Quadrangle, Western Alaska Range.
43. New Data and Insight on the Late Triassic Wrangellia Magmatic Ni-Cu-Co-PGE System in the Talkeetna Mountains, Central Alaska.
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