geochron-analysis: Geochronology lab results and data dictionary geochron-summary: Identification numbers, coordinates, sample descriptions, and summary ages of each sample
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The authors wish to thank the following individuals: Margaret Donelick and Jim McMillan (Apatite to Zircon, Inc.) for technical assistance regarding sample preparation; Charles Knaack (Washington State University) for technical assistance regarding LA-ICP-MS data collection; and Paul O'Sullivan and Ray Donelick (Apatite to Zircon, Inc.) for assistance with LA-ICP-MS data interpretation. Concordia diagrams, ranked-date weighted-mean plots, and kernel density estimates were created using the free online version of IsoplotR (Vermeesch, 2018). Mark Schmitz kindly provided his spreadsheet for calculating the youngest statistical population ages of detrital zircon grains (Herriot and others, 2019). Evan Twelker assisted the authors in processing the data to be compatible with current DGGS practices. Doyon Limited owns part of the land in the 2019 DGGS study area, including the site of sample 11BAE153A; we thank them for permission to work on these lands. This project is part of the Alaska Airborne Geophysical/Geological Mineral Inventory program funded by the Alaska State Legislature and managed by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska General Fund and the U.S. Geological Survey's STATEMAP Program under award number G11AC20203 also provided partial funding for the geologic mapping and geochemical analyses. 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.
This work was part of the Alaska Airborne Geophysical/Geological Mineral Inventory (AGGMI) program and included geologic mapping under the U.S. Geological Survey (USGS) STATEMAP program. The project area is of historical and current interest for the potential development of mineral resources. With this U-Pb geochronology dataset, our goal was to delineate the timing and character of igneous and tectonic events that may be linked to regional and local mineralization controls and characterize the regional source material of the area's metamorphic rock units.
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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 csv |
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https://doi.org/10.14509/31016 |