40Ar/39Ar data, Ray Mountains area, Bettles Quadrangle, Alaska
Description
40Ar/39Ar analyses were performed on igneous rocks from the Ray Mountains area of west-central Alaska. The plutonic samples have ages from about 89 Ma to 109 Ma, while the volcanic samples show ranges from about 30 Ma to 64 Ma. The three volcanic samples fall into two age groups: the younger sample, a basalt, has an age of about 30 Ma, while the two older, rhyolitic samples fall between 58 Ma and 64 Ma. Analyses were performed by the University of Alaska Fairbanks Geochronology Laboratory, and results were reported by Paul Layer and Jeff Benowitz. Products included in this data release are: a summary of sample collection method; the laboratory report, analytical data tables and associated metadata; and plots of the 40Ar/39Ar age spectra, Ca/K ratios, and Cl/K ratios. All components of this data release are available for download on the DGGS website at no charge.
Resources
Name
Format
Description
Link
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CSDGM IMPORT ERROR: No digtinfo/formcont
http://dx.doi.org/10.14509/29124
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http://dx.doi.org/10.14509/25386
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http://dx.doi.org/10.14509/25581
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http://dx.doi.org/10.14509/26781
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http://dx.doi.org/10.14509/29124
Tags
ray mountains
paleogene
40ar/39ar
sample location
geochronology
cretaceous
mineral resources
mineral assessment
mineral deposit
kanuti pluton
analyses
bedrock
geology
bettles quadrangle
bedrock geology
ar-ar
no name creek pluton
hot springs pluton
analyses and sampling
lab methods
strategic and critical minerals assessment project