Water circulation in Ryugu asteroid affected the distribution of nucleosynthetic isotope anomalies in returned sample
文献类型：期刊论文
| 作者 | Yokoyama, Tetsuya4; Wadhwa, Meenakshi3; Iizuka, Tsuyoshi2; Rai, Vinai3; Gautam, Ikshu4; Hibiya, Yuki1; Masuda, Yuki4; Haba, Makiko K.4; Fukai, Ryota53; Hines, Rebekah3 |
| 刊名 | SCIENCE ADVANCES
 |
| 出版日期 | 2023-11-10 |
| 卷号 | 9期号:45页码:11 |
| ISSN号 | 2375-2548 |
| DOI | 10.1126/sciadv.adi7048 |
| 英文摘要 | Studies of material returned from Cb asteroid Ryugu have revealed considerable mineralogical and chemical heterogeneity, stemming primarily from brecciation and aqueous alteration. Isotopic anomalies could have also been affected by delivery of exogenous clasts and aqueous mobilization of soluble elements. Here, we show that isotopic anomalies for mildly soluble Cr are highly variable in Ryugu and CI chondrites, whereas those of Ti are relatively uniform. This variation in Cr isotope ratios is most likely due to physicochemical fractionation between Cr-54-rich presolar nanoparticles and Cr-bearing secondary minerals at the millimeter-scale in the bulk samples, likely due to extensive aqueous alteration in their parent bodies that occurred 5.2(-1.4)(+1.8 )Ma after Solar System birth. In contrast, Ti isotopes were marginally affected by this process. Our results show that isotopic heterogeneities in asteroids are not all nebular or accretionary in nature but can also reflect element redistribution by water. |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001142527000018 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/76240]  |
| 专题 | 中国科学院广州地球化学研究所 |
| 通讯作者 | Yokoyama, Tetsuya |
| 作者单位 | 1.Univ Tokyo, Res Ctr Adv Sci & Technol, Tokyo 1530041, Japan 2.Univ Tokyo, Dept Earth & Planetary Sci, Tokyo 1130033, Japan 3.Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85281 USA 4.Tokyo Inst Technol, Dept Earth & Planetary Sci, Tokyo 1528551, Japan 5.Nat Hist Museum, Dept Earth Sci, London SW7 5BD, England 6.Japan Synchrotron Radiat Res Inst, Spect & Imaging, Sayo, Hyogo 6795198, Japan 7.Washington Univ, Phys Dept, St Louis, MO 63130 USA 8.Univ Tokyo, Geochem Res Ctr, Tokyo 1130033, Japan 9.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, GD, Peoples R China 10.Hokkaido Univ, Dept Nat Hist Sci, Sapporo, Hokkaido 0010021, Japan |
| 推荐引用方式 GB/T 7714 | Yokoyama, Tetsuya,Wadhwa, Meenakshi,Iizuka, Tsuyoshi,et al. Water circulation in Ryugu asteroid affected the distribution of nucleosynthetic isotope anomalies in returned sample[J]. SCIENCE ADVANCES,2023,9(45):11. |
| APA | Yokoyama, Tetsuya.,Wadhwa, Meenakshi.,Iizuka, Tsuyoshi.,Rai, Vinai.,Gautam, Ikshu.,...&Yurimoto, Hisayoshi.(2023).Water circulation in Ryugu asteroid affected the distribution of nucleosynthetic isotope anomalies in returned sample.SCIENCE ADVANCES,9(45),11. |
| MLA | Yokoyama, Tetsuya,et al."Water circulation in Ryugu asteroid affected the distribution of nucleosynthetic isotope anomalies in returned sample".SCIENCE ADVANCES 9.45(2023):11. |
入库方式： OAI收割
来源：广州地球化学研究所
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