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]
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