Zircon U-Pb age data, Ray Mountains area, Bettles Quadrangle, Alaska
Dates
Publication Date
2016
Start Date
2012
End Date
2016
File Modification Date
2016-05-12 12:13:00
Citation
Tuzzolino, A.L., O'Sullivan, P.B., Freeman, L.K., and Newberry, R.J., 2016, Zircon U-Pb age data, Ray Mountains area, Bettles Quadrangle, Alaska: Alaska Division of Geological & Geophysical Surveys, http://dx.doi.org/10.14509/29662.
Summary
U-Pb analyses were performed on igneous rocks from the Ray Mountains area of west-central Alaska. These new age analyses will allow us to better evaluate the geochronology of the granitic rocks that are the apparent source of the alluvial REE and tin resources. The plutonic samples have ages ranging from 98.0 +/- 0.9 Ma to 111.6 +/- 1.0 Ma. The sample location coordinates and analytical data tables associated with this report are available in digital format as comma-separated value (CSV) files.
Summary
U-Pb analyses were performed on igneous rocks from the Ray Mountains area of west-central Alaska. These new age analyses will allow us to better evaluate the geochronology of the granitic rocks that are the apparent source of the alluvial REE and tin resources. The plutonic samples have ages ranging from 98.0 +/- 0.9 Ma to 111.6 +/- 1.0 Ma. The sample location coordinates and analytical data tables associated with this report are available in digital format as comma-separated value (CSV) files.
DGGS conducted a multi-year project, from 2012 through 2013, to study the geology and economic potential of rare-earth elements (REE) and other metals in the Ray Mountains in the Beaver, Bettles, Livengood, and Tanana quadrangles. To better understand the granitic rocks that are associated with REE and tin-polymetallic occurrences in the area, four samples were collected for U-Pb geochronologic analyses. These new age analyses will allow us to better evaluate the geochronology of the granitic rocks that are the apparent source of the alluvial REE and tin resources.
