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Title:
40Argon-39Argon Ages of Centimeter-Sized Impact Melt Clasts from Ancient Regolith Breccia 60016
Authors:
Swindle, T. D.; Beard, S. P.; Isachsen, C. E.; Kring, D. A.
Publication:
75th Annual Meeting of the Meteoritical Society, held August 12-17, 2012 in Cairns, Australia. Published in Meteoritics and Planetary Science Supplement, id.5048
Publication Date:
09/2012
Origin:
LPI
Bibliographic Code:
2012M&PSA..75.5048S

Abstract

Ar-Ar experiments on 17 splits from seven different impact melt clasts from 60016 yield ages ranging from 3750 Ma to 3975 Ma. Petrographic, mineral chemistry data, and geochronology data all suggest that several different impact events are sampled.
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