geochron-data: GeoSep Services lab results and youngest statistical population calculations. geochron-summary: Summary table of samples, descriptions, locations, and youngest statistical population (YSP) calculations.
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We thank Trystan M. Herriott for his constructive review and guidance in the fields of sedimentology and of detrital zircon interpretation, Robert J. Gillis for sharing his knowledge of detrital zircon geochronology, and Melanie Werdon for her review and discussion of the regional bedrock geology. Doyon Limited owns part of the land in the 2019 DGGS study area, including the site of sample 19AW206, and we thank them for permission to work on these lands. This project was jointly funded by the State of Alaska and the U.S. Geological Survey's Earth Mapping Resources Initiative (Earth MRI) through cooperative agreement G19AC00262. 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 data were collected to support the map interpretation by establishing maximum depositional ages (MDAs) for the sampled strata. Further, these results also bolster a regional detrital zircon dataset that will, collectively, further constrain the Cretaceous-Cenozoic paleogeography of the region. This work is of economic and scientific interest: placer gold in the Fortymile District originated in Jurassic orogenic veins and, in some areas, was transported and concentrated by Cretaceous-Cenozoic depositional systems prior to its deposition in modern placer deposits.
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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: | report, tabular-data |
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| Network links: |
https://doi.org/10.14509/30683 |