IHEP OpenIR  > 院士
The distribution and geochemistry of platinum-group elements as event markers in the Phanerozoic
Evans, NJ; Chai ZF(柴之芳); Chai, CF
1997
发表期刊PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
卷号132期号:1-4页码:373-390
通讯作者CALTECH, DIV GEOL & PLANETARY SCI, PASADENA, CA 91125 USA ; CHINESE ACAD SCI, INST HIGH ENERGY PHYS, BEIJING 100080, PEOPLES R CHINA
摘要The discovery of the platinum-group element (PGE) enrichment in the Cretaceous-Tertiary (K-T) boundary impact layer popularized the use of PGEs as geochemical event markers and prompted an explosion of interest in these elements whose geochemical behavior is poorly understood. Instead of concentrating on the more easily analyzed PGEs (e.g., iridium), many studies now include the entire group. Analytical methods have been improved to the point where small samples (less than or equal to 5 g) can be analyzed confidently at the sub-ppb level, allowing the determination of the distribution of PGEs in the oceans, atmosphere and biosphere, The presence or absence of a PGE anomaly is often used as a criterion for determining whether an event horizon is impact-related, however, to date, only the K-T boundary yields a distinct PGE anomaly with positive interelement correlations and solar interelement ratios. Terrestrial sources such as volcanic emissions are also being investigated as potential contributors to PGE anomalies at other Phanerozoic event horizons. Primary signatures (e.g., interelement ratios), characteristic of the PGE source, may be altered during various high and;or low temperature processes. For example, fractionation during impact melting, vaporization/condensation, remobilization, redistribution and diagenesis can obscure original signatures and make determination of the PGE source difficult, Future research might be directed towards establishing the behavior of the PGEs during such processes. (C) 1997 Elsevier Science B.V.
文章类型Article; Proceedings Paper
关键词platinum-group elements Cretaceous-Tertiary boundary Phanerozoic event horizon
学科领域Physical Geography; Geology; Paleontology
DOI10.1016/S0031-0182(97)00059-X
研究领域[WOS]Physical Geography ; Geology ; Paleontology
URL查看原文
语种英语
WOS类目Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号WOS:A1997XY80500024
引用统计
被引频次:23[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237218
专题院士
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714
Evans, NJ,Chai ZF,Chai, CF. The distribution and geochemistry of platinum-group elements as event markers in the Phanerozoic[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,1997,132(1-4):373-390.
APA Evans, NJ,柴之芳,&Chai, CF.(1997).The distribution and geochemistry of platinum-group elements as event markers in the Phanerozoic.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,132(1-4),373-390.
MLA Evans, NJ,et al."The distribution and geochemistry of platinum-group elements as event markers in the Phanerozoic".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 132.1-4(1997):373-390.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
3565.pdf(264KB)期刊论文作者接受稿限制开放CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Evans, NJ]的文章
[柴之芳]的文章
[Chai, CF]的文章
百度学术
百度学术中相似的文章
[Evans, NJ]的文章
[柴之芳]的文章
[Chai, CF]的文章
必应学术
必应学术中相似的文章
[Evans, NJ]的文章
[柴之芳]的文章
[Chai, CF]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。