期刊
GEOCHIMICA ET COSMOCHIMICA ACTA
卷 75, 期 9, 页码 2356-2360出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.gca.2011.02.014
关键词
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资金
- Italian Programma Nazionale delle Ricerche in Antartide (PNRA)
- European Commission [35519]
We determined the fission track age of Transantarctic Mountain microtektites. The plateau method yielded a formation age of 0.85 +/- 0.17 Ma. This age overlaps within error with that of the catastrophic impact that produced the Australasian tektite-microtektite strewn field ca. 0.8 Ma ago. This provides further evidence that Transantarctic Mountain microtektites belong to the Australasian tektite-microtektite strewn field, as previously suggested on the basis of geochemical evidence, Sr-Nd isotope systematics and poorly resolved radiometric data. (C) 2011 Elsevier Ltd. All rights reserved.
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