This data release contains three tables of U-Pb zircon isotopic data generated from analyses of 40 metaplutonic and metavolcanic rocks from the Yukon-Tanana Upland of western Yukon and east-central Alaska and one sample from southern Yukon. One of the tables also reports U-Pb data for two titanite analyses for one of the samples. U-Pb zircon ages from analyzed samples range from 363.5 ± 3.8 to 253.1 ± 0.7 Ma and were collected from parautochthonous North America and the allochthonous Yukon-Tanana terrane. U-Pb zircon data include 216 individual analyses by ID-TIMS and 35 individual analyses of two samples by LA-ICP-MS. ID-TIMS analyses of titanite give concordant 206Pb-238U ages of 333 and 338 Ma. Two U-Pb tables...
Categories: Data;
Tags: Age determinations,
Alaska,
Big Delta,
Eagle,
Fairbanks, All tags...
Geochemistry,
Geochemistry,
Geochronology,
Geology,
Igneous rocks,
Isotopes,
Isotopic analysis,
Major elements,
Metamorphic rocks,
Minor elements,
Radioactive elements,
Radiometric dating,
Tanacross,
Trace elements,
USGS Science Data Catalog (SDC),
Uranium-lead analysis,
Uranium-thorium analysis,
Whole-rock geochemistry,
Yukon,
geoscientificInformation, Fewer tags
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