SIMS U-Pb dating of micro-zircons in the lunar meteorites Dhofar 1528 and Dhofar 1627
文献类型：期刊论文
| 作者 | Zhang, Bidong8,9; Lin, Yangting7; Hao, Jialong7; Schrader, Devin L.5,6; Wadhwa, Meenakshi5; Korotev, Randy L.1,4; Hartmann, William K.3; Bouvier, Audrey2,8 |
| 刊名 | METEORITICS & PLANETARY SCIENCE
 |
| 出版日期 | 2023-10-01 |
| 卷号 | 58期号:10页码:1540-1551 |
| ISSN号 | 1086-9379 |
| DOI | 10.1111/maps.14078 |
| 英文摘要 | About half of the lunar meteorites in our collections are feldspathic breccias. Acquiring geochronologic information from these breccias is challenging due to their low radioactive-element contents and their often polymict nature. We used high-spatial-resolution (5 mu m) NanoSIMS (nanoscale secondary ion mass spectrometry) U-Pb dating technique to date micro-zircons in the lunar feldspathic meteorites Dhofar 1528 and Dhofar 1627. Three NanoSIMS dating spots of two zircon grains from Dhofar 1528 show a discordia with an upper intercept at 4354 +/- 76Ma and a lower intercept at 332 +/- 1407Ma (2 sigma, MSWD=0.01, p=0.91). Three spots of two zircon grains in Dhofar 1627 define a discordia with an upper intercept at 3948 +/- 30Ma and a lower intercept at 691 +/- 831Ma (2 sigma, MSWD=0.40, p=0.53). Both samples likely experienced shock metamorphism caused by impacts. Based on the clastic nature, lack of recrystallization and the consistent U-Pb and Pb-Pb dates of the zircons in Dhofar 1528, the U-Pb date of 4354Ma is interpreted as the crystallization age of its Mg-suite igneous precursor. Some of the Dhofar 1627 zircons show poikilitic texture, a crystallization from the matrix impact melt, so the U-Pb date of 3948Ma corresponds to an impact event, likely the Imbrium basin-forming event. These data are the first radiometric ages for these two meteorites and demonstrate that in situ (high spatial resolution) U-Pb dating has potential for extracting geochronological information about igneous activities and impact events from lunar feldspathic and polymict breccias. |
| WOS关键词 | 14 BRECCIAS IMPLICATIONS ; CHEMICAL-COMPOSITION ; THERMAL HISTORY ; SAU 169 ; IMPACT ; AGES ; CHRONOLOGY ; SOIL ; GEOCHEMISTRY ; EVOLUTION |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:001083211800009 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/110743]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 通讯作者 | Zhang, Bidong |
| 作者单位 | 1.Washington Univ, McDonnell Ctr Space Sci, St Louis, MO USA 2.Univ Bayreuth, Bayer Geoinst, Bayreuth, Germany 3.Planetary Sci Inst, Tucson, AZ USA 4.Washington Univ, Dept Earth & Planetary Sci, St Louis, MO USA 5.Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ USA 6.Arizona State Univ, Buseck Ctr Meteorite Studies, Tempe, AZ USA 7.Chinese Acad Sci, Key Lab Earth & Planetary Phys, Inst Geol & Geophys, Beijing, Peoples R China 8.Univ Western Ontario, Dept Earth Sci, London, ON, Canada 9.Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA 90095 USA |
| 推荐引用方式 GB/T 7714 | Zhang, Bidong,Lin, Yangting,Hao, Jialong,et al. SIMS U-Pb dating of micro-zircons in the lunar meteorites Dhofar 1528 and Dhofar 1627[J]. METEORITICS & PLANETARY SCIENCE,2023,58(10):1540-1551. |
| APA | Zhang, Bidong.,Lin, Yangting.,Hao, Jialong.,Schrader, Devin L..,Wadhwa, Meenakshi.,...&Bouvier, Audrey.(2023).SIMS U-Pb dating of micro-zircons in the lunar meteorites Dhofar 1528 and Dhofar 1627.METEORITICS & PLANETARY SCIENCE,58(10),1540-1551. |
| MLA | Zhang, Bidong,et al."SIMS U-Pb dating of micro-zircons in the lunar meteorites Dhofar 1528 and Dhofar 1627".METEORITICS & PLANETARY SCIENCE 58.10(2023):1540-1551. |
入库方式： OAI收割
来源：地质与地球物理研究所
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