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A method for intercalibration of U-Th-Pb and 40Ar-39Ar ages in the Phanerozoic

✍ Scribed by Mike Villeneuve; Hamish A. Sandeman; William J. Davis


Book ID
117116621
Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
698 KB
Volume
64
Category
Article
ISSN
0016-7037

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Radiometric ages of the Fire Clay tonste
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The Fire Clay tonstein [Pennsylvanian (Upper Carboniferous), Westphalian Series, Duckmantian Stage]-a kaolinized, volcanicash deposit occurring in Kentucky, West Virginia, Tennessee, and Virginia-is the most widespread bed in the Middle Pennsylvanian of the central Appalachian basin, USA. A concorda