Abundant presolar grains and primordial organics preserved in carbon-rich exogenous clasts in asteroid Ryugu
文献类型：期刊论文
| 作者 | Nguyen, Ann. N.32; Mane, Prajkta31; Keller, Lindsay P.32; Piani, Laurette30; Abe, Yoshinari29; Aleon, Jerome27,28; Alexander, Conel M. O'D.27; Amari, Sachiko24,25,26; Amelin, Yuri23; Bajo, Ken-ichi22 |
| 刊名 | SCIENCE ADVANCES
 |
| 出版日期 | 2023-07-01 |
| 卷号 | 9期号:28页码:11 |
| ISSN号 | 2375-2548 |
| DOI | 10.1126/sciadv.adh1003 |
| 英文摘要 | Preliminary analyses of asteroid Ryugu samples show kinship to aqueously altered CI (Ivuna-type) chondrites, suggesting similar origins. We report identification of C-rich, particularly primitive clasts in Ryugu samples that contain preserved presolar silicate grains and exceptional abundances of presolar SiC and isotopically anomalous organic matter. The high presolar silicate abundance (104 ppm) indicates that the clast escaped extensive alteration. The 5 to 10 times higher abundances of presolar SiC (similar to 235 ppm), N-rich organic matter, organics with N isotopic anomalies (1.2%), and organics with C isotopic anomalies (0.2%) in the primitive clasts compared to bulk Ryugu suggest that the clasts formed in a unique part of the protoplanetary disk enriched in presolar materials. These clasts likely represent previously unsampled outer solar system material that accreted onto Ryugu after aqueous alteration ceased, consistent with Ryugu's rubble pile origin. |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001030994500011 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74610]  |
| 专题 | 中国科学院广州地球化学研究所 |
| 通讯作者 | Nguyen, Ann. N. |
| 作者单位 | 1.Univ Tokyo, UTokyo Org Planetary & Space Sci, Tokyo 1130033, Japan 2.Ibaraki Univ, Fac Sci, Mito 3108512, Japan 3.Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Sagamihara 2525210, Japan 4.Japan Synchrotron Radiat Res Inst, Spect & Imaging, Hyogo 6795198, Japan 5.Univ Maryland, Dept Geol, College Pk, MD 20742 USA 6.Okayama Univ, Grad Sch Nat Sci & Technol, Okayama 7008530, Japan 7.Univ Calif Davis, Earth & Planetary Sci, Davis, CA 95616 USA 8.Natl Museum Nat & Sci, Sci & Engn, Tsukuba 3050005, Japan 9.Tokyo Univ Sci, Dept Chem, Tokyo 1628601, Japan 10.Nanjing Univ, Sch Earth Sci & Engn, Nanjing 210023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Nguyen, Ann. N.,Mane, Prajkta,Keller, Lindsay P.,et al. Abundant presolar grains and primordial organics preserved in carbon-rich exogenous clasts in asteroid Ryugu[J]. SCIENCE ADVANCES,2023,9(28):11. |
| APA | Nguyen, Ann. N..,Mane, Prajkta.,Keller, Lindsay P..,Piani, Laurette.,Abe, Yoshinari.,...&Yurimoto, Hisayoshi.(2023).Abundant presolar grains and primordial organics preserved in carbon-rich exogenous clasts in asteroid Ryugu.SCIENCE ADVANCES,9(28),11. |
| MLA | Nguyen, Ann. N.,et al."Abundant presolar grains and primordial organics preserved in carbon-rich exogenous clasts in asteroid Ryugu".SCIENCE ADVANCES 9.28(2023):11. |
入库方式： OAI收割
来源：广州地球化学研究所
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