caa a22 4500 445300124 CHVBK 20180317142554.0 cr unu---uuuuu 170323e20100301xx s 000 0 eng 10.1007/s11430-010-0041-z doi (NATIONALLICENCE)springer-10.1007/s11430-010-0041-z SIMS Pb/Pb dating of Zr-rich minerals in lunar meteorites Miller Range 05035 and LaPaz Icefield 02224: Implications for the petrogenesis of mare basalt [Elektronische Daten] [AiCheng Zhang, WeiBiao Hsu, QiuLi Li, Yu Liu, Yun Jiang, GuoQiang Tang] Miller Range (MIL) 05035 and LaPaz Icefield (LAP) 02224 are unbrecciated lunar basalt meteorites. In this report, we studied their petrography and mineralogy and made in situ uranogenic Pb/Pb dating of Zr-rich minerals. Petrography and mineralogy of these two lunar meteorites are consistent with previous investigations. The zirconolite Pb/Pb age of MIL 05035 is 3851±8 Ma (2σ), in excellent agreement with previous reports. This age suggests that MIL 05035 could be paired with Asuka 881757, a low-Ti mare basalt meteorite. The magmatic event related to MIL 05035 was probably due to the late heavy impact bombardment on the moon around 3.9 Ga. One baddeleyite grain in LAP 02224 shows a large variation of Pb/Pb age, from 3109±29 to 3547±21 Ma (2σ), much older than the whole-rock age of the same meteorite (∼3.02±0.03 Ga). The other baddeleyite grain in LAP 02224 has an age of 3005±17 Ma (2σ). The result indicates that the minimum crystallization age of LAP 02224 is ∼3.55 Ga and the younger ages could reflect late thermal disturbance on U-Pb system. Science China Press and Springer-Verlag Berlin Heidelberg, 2010 Pb/Pb dating nationallicence SIMS nationallicence zirconolite and baddeleyite nationallicence lunar meteorite nationallicence low-Ti mare basalt nationallicence Zhang AiCheng Lunar and Planetary Science Center, Purple Mountain Observatory, Chinese Academy of Sciences, 210008, Nanjing, China aut Hsu WeiBiao Faculty of Earth Sciences, China University of Geosciences, 430074, Wuhan, China aut Li QiuLi State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, 100029, Beijing, China aut Liu Yu State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, 100029, Beijing, China aut Jiang Yun Lunar and Planetary Science Center, Purple Mountain Observatory, Chinese Academy of Sciences, 210008, Nanjing, China aut Tang GuoQiang State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, 100029, Beijing, China aut Science China Earth Sciences SP Science China Press 53/3(2010-03-01), 327-334 1674-7313 53:3<327 2010 53 11430 https://doi.org/10.1007/s11430-010-0041-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11430-010-0041-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang AiCheng Lunar and Planetary Science Center, Purple Mountain Observatory, Chinese Academy of Sciences, 210008, Nanjing, China aut NATIONALLICENCE 700 1- Hsu WeiBiao Faculty of Earth Sciences, China University of Geosciences, 430074, Wuhan, China aut NATIONALLICENCE 700 1- Li QiuLi State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, 100029, Beijing, China aut NATIONALLICENCE 700 1- Liu Yu State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, 100029, Beijing, China aut NATIONALLICENCE 700 1- Jiang Yun Lunar and Planetary Science Center, Purple Mountain Observatory, Chinese Academy of Sciences, 210008, Nanjing, China aut NATIONALLICENCE 700 1- Tang GuoQiang State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, 100029, Beijing, China aut NATIONALLICENCE 773 0- Science China Earth Sciences SP Science China Press 53/3(2010-03-01), 327-334 1674-7313 53:3<327 2010 53 11430 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer