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Magmatic and structural framework of PGE and other mineralization in northwestern Wrangellia, central Alaska

Metadata Updated: November 10, 2020

A thick and regionally extensive sequence of low-grade-metamorphosed Late Triassic basaltic rocks, the Nikolai Greenstone, is a characteristic component of the stratigraphy of the Wrangellia terrane in central and southeastern Alaska, Yukon, and British Columbia. Mafic to ultramafic intrusions feeding this extensive volcanic province hold high geologic potential for discovery of economically signifigant magmatic sulfide deposits. This digital data file provides microprobe compositions of olivine and pyroxine from ultramafic samples across the study area. Mineral compositions and the ratio of molar MgO per(MgO+FeO) interpret magma evolution and provide insight into the magmatic-geochemical framework of Ni-Cu-Co-PGE mineralization related to the Butte, Rainy, Eureka, Canwell, and Talkeetna Mountains intrusions. These data accompany a summary report of findings from a multiyear Alaska Division of Geological & Geophysical Surveys (DGGS) project to better understand the geologic context of mineralization hosted by the Wrangellia terrane in the eastern Alaska Range and Talkeetna Mountains, with particular emphasis on evaluating the area's potential for hosting the strategic and critical platinum-group elements (PGEs) and cobalt (Co). Users can access the complete report and digital data from the DGGS website: http://doi.org/10.14509/30468.

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

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Dates

Metadata Date October 2, 2020
Metadata Created Date November 10, 2020
Metadata Updated Date November 10, 2020
Reference Date(s) January 1, 2020 (publication)
Frequency Of Update notPlanned

Additional Metadata

Resource Type Dataset
Metadata Date October 2, 2020
Metadata Created Date November 10, 2020
Metadata Updated Date November 10, 2020
Reference Date(s) January 1, 2020 (publication)
Responsible Party Alaska Division of Geological & Geophysical Surveys (Point of Contact)
Contact Email
Guid
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 -145.701100
Bbox North Lat 63.355800
Bbox South Lat 62.583800
Bbox West Long -148.635600
Coupled Resource
Frequency Of Update notPlanned
Harvest Object Id 50fb6880-341f-4457-9514-47c4ba454a0e
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.
Metadata Language eng; USA
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2013-01-01
Temporal Extent End 2020-01-01

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