中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 岩石圈演化国家重点实验室
Tungsten Isotopic Constraints on the Nature of Earth's Accreting Materials

文献类型：期刊论文

作者Mei Qingfeng2; Yang Jinhui1,2
刊名ACTA GEOLOGICA SINICA-ENGLISH EDITION
出版日期2022-08-01
卷号96期号:4页码:1213-1220
关键词tungsten isotope nucleosynthetic anomalies Moon-forming giant impact late veneer
ISSN号1000-9515
DOI10.1111/1755-6724.14952
英文摘要Tungsten isotope is a powerful tracer for the Earth's accreting materials because of the distinct W isotope compositions of the non-carbonaceous meteorites and carbonaceous meteorites. To better understand the evolution of the early Earth, here we calculated the expected mu W-183 of the bulk silicate Earth for different assumed compositions of the proto-Earth's mantle, the Moon-forming giant impactor, and the late veneer using a Monte Carlo approach. The result shows that the proto-Earth likely has a non-carbonaceous composition, while the carbonaceous chondrite-like materials were delivered to the Earth at the late stages of accretion. The predicted difference in mu W-183 values between the bulk silicate Earth and the non-carbonaceous meteorites of the scenarios assuming a pure carbonaceous composition for the giant impactor is slightly bigger than that of the scenarios assuming either a pure non-carbonaceous or a mixed carbonaceous-non-carbonaceous composition for the giant impactor (similar to 5 ppm versus similar to 2 ppm). The ancient mantle reservoir that partially lacks the late veneer with carbonaceous composition should have a negative mu W-183 value (from -3 to 0). Uncertainties introduced by the cosmogenic effects and mass-independent fractionation should be concerned during the high precision measurement of mu W-183 for meteorites and ancient terrestrial samples in further work.
WOS关键词EARLY MANTLE DIFFERENTIATION ; HIGHLY SIDEROPHILE ELEMENT ; HF-W CHRONOLOGY ; CORE FORMATION ; IRON-METEORITES ; NITROGEN ISOTOPES ; NEUTRON-CAPTURE ; W-182 EVIDENCE ; LATE-VENEER ; ORIGIN
资助项目National Natural Science Foundation of China[42103011] ; National Natural Science Foundation of China[42288201] ; National Key R&D Program of China[2016YFC0600109]
WOS研究方向Geology
语种英语
WOS记录号WOS:000847531600007
出版者WILEY
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China ; National Key R&D Program of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/108398]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Mei Qingfeng
作者单位1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Mei Qingfeng,Yang Jinhui. Tungsten Isotopic Constraints on the Nature of Earth's Accreting Materials[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2022,96(4):1213-1220.
APA Mei Qingfeng,&Yang Jinhui.(2022).Tungsten Isotopic Constraints on the Nature of Earth's Accreting Materials.ACTA GEOLOGICA SINICA-ENGLISH EDITION,96(4),1213-1220.
MLA Mei Qingfeng,et al."Tungsten Isotopic Constraints on the Nature of Earth's Accreting Materials".ACTA GEOLOGICA SINICA-ENGLISH EDITION 96.4(2022):1213-1220.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

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。