electron‑microprobe mineral‑chemistry data: Sample identifiers, geographic locations and description, petrographic locations, mineral phases, oxide weight percentages, and calculated cation proportions for amphibole and plagioclase populations.
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The authors thank J. Wes Buchanan for his review, which improved the quality of the manuscript, and the University of Alaska Fairbanks Advanced Instrumentation Laboratory (UAF-AIL) manager, Dr. Nathan Graham, who helped set up the 2024 WDS analyses. We also thank Evan Twelker, Travis Naibert, Mike Barrera, Dave Szumigala, Alicja Wypych, Michelle Gavel, Wes Buchanan, Alec Wildland, Sean Regan, David Harvey, Izzy Muller, Serena Fessenden, Noel Blackwell, Lily Norwood, and Marisa Acosta, who mapped with the authors at various times between 2021 and 2024, procured samples used in this study, and provided helpful observations and ideas. K. Clautice, D. Solie, T. Bundtzen, G. Laird, and R. Reifenstuhl mapped with Newberry in 1995 and provided samples and discussion. Dr. Ken Severin assisted with those WDS analyses. Much of this work was performed at the UAF-AIL, and the authors gratefully acknowledge use of the UAF-AIL electron microprobe acquired with support from the National Science Foundation, Major Research Instrumentation Program Award Number 1126898. We profusely thank past and present personnel of UAF-AIL. This project was jointly funded by the State of Alaska and the U.S. Geological Survey Earth Mapping Resources Initiative (Earth MRI) through cooperative agreements G20AC00156, G21AC00336, G22AC00288, G23AC00372, and G24AC00323. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the opinions or policies of the U.S. Geological Survey. Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.
The Yukon Tanana Upland of east central Alaska is a region with significant critical mineral potential and complex metamorphic geology. The purpose of this dataset is to contribute to ongoing efforts to modernize geologic mapping across east central Alaska by providing mineral chemistry information that improves the interpretation of rock units and regional geologic relationships.
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Are there legal restrictions on access or use of the data?Access_Constraints:
This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).Use_Constraints:Any hard copies or published datasets utilizing these datasets 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. The user specifically agrees not to misrepresent these datasets, 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. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data 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 or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data 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 or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
| Data format: | table in format spreadsheet |
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https://doi.org/10.14509/32081 |