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Timing of global crustal metamorphism on Vesta as revealed by high-precision U-Pb dating and trace element chemistry of eucrite zircon

Iizuka, Tsuyoshi; Yamaguchi, Akira; Haba, Makiko K.; Amelin, Yuri; Holden, Peter; Zink, Sonja; Huyskens, Magdalena; Ireland, Trevor


Non-cumulate eucrites represent basaltic crust that experienced a complex thermal history involving multistage metamorphism and metasomatism, probably on asteroid Vesta. To better constrain the thermal history of these rocks and their parent body, we have integrated high-precision U-Pb age and trace element data for zircon grains with sizes up to 80 μm in the eucrite Agoult. All analyzed zircon grains yielded concordant U-Pb dates that correspond to the precise 207Pb/206Pb age of 4554.5±2.0 Ma....[Show more]

CollectionsANU Research Publications
Date published: 2014
Type: Journal article
Source: Earth and Planetary Science Letters
DOI: 10.1016/j.epsl.2014.10.055


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