Platinum group element abundances in a peat layer associated with the Tunguska event, further evidence for a cosmic origin
文献类型：期刊论文
| 作者 | Hou, QL; Kolesnikov, EM; Xie, LW; Kolesnikova, NV; Zhou, MF; Sun, M |
| 刊名 | PLANETARY AND SPACE SCIENCE
 |
| 出版日期 | 2004-04-01 |
| 卷号 | 52期号:4页码:331-340 |
| 关键词 | Tunguska event platinum group elements (PGEs) peat layer cosmic body |
| ISSN号 | 0032-0633 |
| DOI | 10.1016/j.pss.2003.08.002 |
| 文献子类 | Article |
| 英文摘要 | We have measured excesses of Pd, Rh, Ru, REE, Co, Sr, and Y in a peat column from the Northern peat bog of the 1908 Tunguska explosion site. Earlier, in this peat column the presence of an Ir anomaly at the event layers (30-45 ern depth) has been found (Planet Space Sci. 48 (1998) 179). In these layers, Pd, Rh, Ru, Co, Sr, and Y show pronounced anomalies of a factor 4-7 higher than the background value. In the event layers there are also good correlations between the siderophile platinum group elements (Pd, Rh, Ru) and Co, indicators of cosmic material, which imply they might have the same source, i.e. the Tunguska explosive body. The patterns of Cl-chondrite-normalized REE in the event layers are much flatter than those in normal peat layers and different from those in the nearby traps. Furthermore, in these layers the patterns of CI-chondrite-normalized PGEs and the element ratios (e.g. C/Pd, C/Rh, and between some siderophile elements) give evidence that the Tunguska explosive body was more likely a comet, although we cannot exclude the possibility that the impactor could be a carbonaceous asteroid. We have estimated the total mass of a solid component of the explosive body up to 10(3)-10(6) tons. (C) 2003 Elsevier Ltd. All rights reserved. |
| WOS关键词 | EXPLOSION SITE ; ISOTOPIC ANOMALIES ; BODY MATERIAL ; DISCOVERY ; IMPACT ; ICE ; EXTINCTION ; CHONDRITES ; METEORITE ; IRIDIUM |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000189385400008 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/64313]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Hou, QL |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Lab Lithosphere Tecton Evolut, Beijing 100029, Peoples R China 2.Moscow MV Lomonosov State Univ, Geol Fac, Moscow 119899, Russia 3.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hou, QL,Kolesnikov, EM,Xie, LW,et al. Platinum group element abundances in a peat layer associated with the Tunguska event, further evidence for a cosmic origin[J]. PLANETARY AND SPACE SCIENCE,2004,52(4):331-340. |
| APA | Hou, QL,Kolesnikov, EM,Xie, LW,Kolesnikova, NV,Zhou, MF,&Sun, M.(2004).Platinum group element abundances in a peat layer associated with the Tunguska event, further evidence for a cosmic origin.PLANETARY AND SPACE SCIENCE,52(4),331-340. |
| MLA | Hou, QL,et al."Platinum group element abundances in a peat layer associated with the Tunguska event, further evidence for a cosmic origin".PLANETARY AND SPACE SCIENCE 52.4(2004):331-340. |
入库方式： OAI收割
来源：地质与地球物理研究所
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