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This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

40Ar/39Ar geochronology data from the Big Delta, Eagle, and Mount Hayes quadrangles, Alaska

Metadata Updated: April 5, 2025

40Ar/39Ar geochronology data from the Big Delta, Eagle, and Mount Hayes quadrangles, Alaska, Raw Data File 2025-11, presents 40Ar/39Ar geochronological results from samples collected during 1:100,000-scale geologic mapping across approximately 3,100 mi² (8,000 km²) in the Big Delta, Eagle, and Mt. Hayes quadrangles, an area known for gold (Au) mineralization. A total of twenty-four 40Ar/39Ar ages are reported, including three crystallization ages from intrusive rocks, two ages from mineralized veins, one age from a skarn, and eighteen metamorphic cooling ages, comprising six from the Yukon-Tanana Terrane and twelve from parautochthonous North America. These samples were analyzed to refine our understanding of igneous rock crystallization ages, metamorphic rock exhumation history, and the timing of mineralization. These data and report are available from the DGGS website: http://doi.org/10.14509/31534.

Access & Use Information

Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: No license information was provided.

Downloads & Resources

Dates

Metadata Date April 1, 2025
Metadata Created Date April 5, 2025
Metadata Updated Date April 5, 2025
Reference Date(s) January 1, 2025 (publication)
Frequency Of Update notPlanned

Metadata Source

Harvested from Alaska Division of Geological and Geophysical Surveys

Additional Metadata

Resource Type Dataset
Metadata Date April 1, 2025
Metadata Created Date April 5, 2025
Metadata Updated Date April 5, 2025
Reference Date(s) January 1, 2025 (publication)
Responsible Party Alaska Division of Geological & Geophysical Surveys (Point of Contact)
Contact Email
Guid e0cc2d6c-d29b-4418-9f14-0adf41202a3f_source
Access Constraints 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., 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).
Bbox East Long -143.178860
Bbox North Lat 64.481370
Bbox South Lat 63.844140
Bbox West Long -146.190260
Coupled Resource
Frequency Of Update notPlanned
Harvest Object Id e0cc2d6c-d29b-4418-9f14-0adf41202a3f
Harvest Source Id 8f77b6d5-f630-4995-bdf3-0aee7158a7f3
Harvest Source Title Alaska Division of Geological and Geophysical Surveys
Licence 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.
Lineage This lineage was generated by the FGDC CSDGM to 19139 transformation
Metadata Language eng; USA
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-146.19026, 63.84414], [-143.17886, 63.84414], [-143.17886, 64.48137], [-146.19026, 64.48137], [-146.19026, 63.84414]]]}
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2022-01-01
Temporal Extent End 2025-01-01

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