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Chert geochemistry discriminant analysis and K-meas cluster analysis: Rampart Project area, Tanana B-1 Quadrangle, east-central Alaska

Metadata Updated: November 10, 2020

A pilot study using discriminant analysis on major oxide and minor element data from 67 chert samples in the Rampart area, southeastern Tanana and southwest Livengood Quadrangles, western Yukon-Tanana Upland, Alaska, generally indicates a unique geochemical signature for the cherts of a given unit.Chert samples from five known type locales were used as standards of comparison: 1)Livengood Dome Chert (Ordovician), 2)Amy Creek unit (Proterozoic to early Paleozoic), 3)Rampart Group (Mississippian to Triassic), 4)Troublesome Creek unit (Devonian), and 5)Permian-Triassic clastic unit (associated with the Triassic-dated gabbro). Samples from the above units were compared to chert from Tanana B-1 area-units of unknown or uncertain affinity.We have determined that discriminant analysis of chert geochemistry can assign chert profiles to specific units with only minor exceptions, and is useful in geologic mapping of the Tanana B-1 Quadrangle (Reifenstuhl and others, 1997).

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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 February 26, 2009
Metadata Created Date November 10, 2020
Metadata Updated Date November 10, 2020
Reference Date(s) March 1, 2009 (publication)
Frequency Of Update notPlanned

Additional Metadata

Resource Type Dataset
Metadata Date February 26, 2009
Metadata Created Date November 10, 2020
Metadata Updated Date November 10, 2020
Reference Date(s) March 1, 2009 (publication)
Responsible Party State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (Point of Contact)
Contact Email
Guid
Access Constraints Use Constraints: Any hardcopies or published data sets utilizing these data sets 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. User specifically agrees not to misrepresent these data sets, 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., Access Constraints: This report, map, and/or data set are available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
Bbox East Long -138.333
Bbox North Lat 65.09
Bbox South Lat 65.5333
Bbox West Long -150.533
Coupled Resource
Frequency Of Update notPlanned
Harvest Object Id 90cea17e-9b9d-4baf-8b25-4034b085b0dc
Harvest Source Id 8f77b6d5-f630-4995-bdf3-0aee7158a7f3
Harvest Source Title Alaska Division of Geological and Geophysical Surveys
Licence
Metadata Language eng; USA
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True

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