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. 中国科学院地球与行星物理重点实验室
In-situ phosphate U-Pb ages of the L chondrites

文献类型：期刊论文

作者Walton, Craig Robert1; Jeon, Heejin11; Cernok, Ana2,3,12; Rae, Auriol S. P.4; Baziotis, Ioannis5; Tang, Fengzai6; Kuppili, Venkata S. C.7; Ferrierej, Ludovic8; Darling, James9; Hu, Sen10
刊名GEOCHIMICA ET COSMOCHIMICA ACTA
出版日期2023-10-15
卷号359页码:191-204
关键词Early Solar System Collision history Bombardment L chondrites Meteorites U-Pb geochronology
ISSN号0016-7037
DOI10.1016/j.gca.2023.07.012
英文摘要The thermal history of asteroids is recorded by the radioisotopic ages of meteorites that derive from them. Radioisotopic ages may date a number of events, such as the cooling of a parent body during waning radiogenic metamorphism, rapid cooling experienced upon parent body break-up, and/or subsequent collision-induced reheating of material. However, sampling statistics for meteorite radioisotope ages are currently relatively low and most are derived from analyses of bulk material, therefore lacking the in-situ microtextural context that aids in distinguishing collisional events. Here, we present new in-situ apatite U-Pb ages for nine L chondrite meteorites using secondary ionisation mass spectrometry.Our measurements greatly expand the L chondrite phosphate U-Pb age record and provide evidence for distinct stages in the thermal evolution of the L chondrite parent asteroid, including: early collisions driving parent body fragmentation-and/or exhumation-associated cooling at > 4530 Ma; onion-shell-style cooling with waning radiogenic metamorphism until 4500 Ma; late collisional reheating from 4480-4460 Ma; parent body break-up at 474 +/- 22 Ma; and recent ejection events within several 10s of Myr of present day. We show that meteorite shock stage correlates with upper intercept age but is uncorrelated with lower intercept age. This outcome links the upper intercept ages alone to the preserved high-energy impact-related features in strongly shocked meteorites, which has important implications for our interpretation of the L chondrite U-Pb record.We see no evidence in our record for collisional episodes between 3000-4400 Ma, i.e., the Late Heavy Bombardment. Our upper intercept age record hints that collision rates changed as a result of some dynamical instability at 4460-4480 Ma, which may have strongly depleted the main asteroid belt, and/or that L asteroid physical structure changed such that the shock metamorphic response to collisions was muted after this time, e.g., by the formation of weak rubble pile bodies. L chondrite phosphate U-Pb ages provide evidence for a heterogeneous early and shared late (less than 500 Ma) thermal history for the majority of L chondrite meteorites falling to Earth today. From this observation, we infer that most L chondrites derive from a single parent asteroid (in existence from around 4500-4440 Ma to 474 +/- 22 Ma), which has since been disturbed to create an asteroid family. Our record of meteorite U-Pb ages traces out the thermal and dynamical evolution of the L chondrite asteroid. These observations can be used in future to benchmark dynamical models of Solar System evolution.
WOS关键词MOON-FORMING IMPACT ; SHOCK METAMORPHISM ; PARENT BODY ; CHELYABINSK METEORITE ; HISTORY ; APATITE ; DISRUPTION ; MINERALS ; CLASSIFICATION ; GEOCHRONOLOGY
资助项目NERC ; NERC DTP studentship[NE/L002507/1] ; Cambridge Leverhulme center for Life in the Universe ; Trinity College (Cambridge) in the form of a Junior Research Fellowship ; ETH Zurich ; National Natural Science Foundation of China[41973062] ; key research program of the Institute of Ge-ology and Geophysics, CAS[IGGCAS-201905] ; Trinity College Cambridge ; UK Science and Technology Facilities Council (STFC)[ST/P000657/1] ; Isaac Newton Trust Early Career Support award ; UKRI ; Swedish Research Council[ST/T000228] ; [2017-00671]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:001092001300001
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构NERC ; NERC ; NERC DTP studentship ; NERC DTP studentship ; Cambridge Leverhulme center for Life in the Universe ; Cambridge Leverhulme center for Life in the Universe ; Trinity College (Cambridge) in the form of a Junior Research Fellowship ; Trinity College (Cambridge) in the form of a Junior Research Fellowship ; ETH Zurich ; ETH Zurich ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; key research program of the Institute of Ge-ology and Geophysics, CAS ; key research program of the Institute of Ge-ology and Geophysics, CAS ; Trinity College Cambridge ; Trinity College Cambridge ; UK Science and Technology Facilities Council (STFC) ; UK Science and Technology Facilities Council (STFC) ; Isaac Newton Trust Early Career Support award ; Isaac Newton Trust Early Career Support award ; UKRI ; UKRI ; Swedish Research Council ; Swedish Research Council ; NERC ; NERC ; NERC DTP studentship ; NERC DTP studentship ; Cambridge Leverhulme center for Life in the Universe ; Cambridge Leverhulme center for Life in the Universe ; Trinity College (Cambridge) in the form of a Junior Research Fellowship ; Trinity College (Cambridge) in the form of a Junior Research Fellowship ; ETH Zurich ; ETH Zurich ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; key research program of the Institute of Ge-ology and Geophysics, CAS ; key research program of the Institute of Ge-ology and Geophysics, CAS ; Trinity College Cambridge ; Trinity College Cambridge ; UK Science and Technology Facilities Council (STFC) ; UK Science and Technology Facilities Council (STFC) ; Isaac Newton Trust Early Career Support award ; Isaac Newton Trust Early Career Support award ; UKRI ; UKRI ; Swedish Research Council ; Swedish Research Council ; NERC ; NERC ; NERC DTP studentship ; NERC DTP studentship ; Cambridge Leverhulme center for Life in the Universe ; Cambridge Leverhulme center for Life in the Universe ; Trinity College (Cambridge) in the form of a Junior Research Fellowship ; Trinity College (Cambridge) in the form of a Junior Research Fellowship ; ETH Zurich ; ETH Zurich ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; key research program of the Institute of Ge-ology and Geophysics, CAS ; key research program of the Institute of Ge-ology and Geophysics, CAS ; Trinity College Cambridge ; Trinity College Cambridge ; UK Science and Technology Facilities Council (STFC) ; UK Science and Technology Facilities Council (STFC) ; Isaac Newton Trust Early Career Support award ; Isaac Newton Trust Early Career Support award ; UKRI ; UKRI ; Swedish Research Council ; Swedish Research Council ; NERC ; NERC ; NERC DTP studentship ; NERC DTP studentship ; Cambridge Leverhulme center for Life in the Universe ; Cambridge Leverhulme center for Life in the Universe ; Trinity College (Cambridge) in the form of a Junior Research Fellowship ; Trinity College (Cambridge) in the form of a Junior Research Fellowship ; ETH Zurich ; ETH Zurich ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; key research program of the Institute of Ge-ology and Geophysics, CAS ; key research program of the Institute of Ge-ology and Geophysics, CAS ; Trinity College Cambridge ; Trinity College Cambridge ; UK Science and Technology Facilities Council (STFC) ; UK Science and Technology Facilities Council (STFC) ; Isaac Newton Trust Early Career Support award ; Isaac Newton Trust Early Career Support award ; UKRI ; UKRI ; Swedish Research Council ; Swedish Research Council
源URL[http://ir.iggcas.ac.cn/handle/132A11/110717]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Walton, Craig Robert
作者单位1.Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England
2.Univ Trieste, Dept Math & Geosci, Via Weiss 8, I-34127 Trieste, Italy
3.Open Univ, Dept Phys Sci, Walton Hall, Milton Keynes MK7 6AA, England
4.Univ Cambridge, Dept Earth Sci, Cambridge CB2 3EQ, England
5.Agr Univ Athens, Dept Nat Resources Management & Agr Engn, Iera Odos 75, Athens 11855, Greece
6.Univ Warwick, WMG, Warwick CV4 7AL, England
7.Canadian Light Source Inc, 44 Innovat Blvd, Saskatoon, SK S7N 2V3, Canada
8.Nat Hist Museum Vienna, Burgring 7, A-1010 Vienna, Austria
9.Univ Portsmouth, Burnaby Bldg,Burnaby Rd, Portsmouth PO1 3QL, England
10.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Walton, Craig Robert,Jeon, Heejin,Cernok, Ana,et al. In-situ phosphate U-Pb ages of the L chondrites[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2023,359:191-204.
APA Walton, Craig Robert.,Jeon, Heejin.,Cernok, Ana.,Rae, Auriol S. P..,Baziotis, Ioannis.,...&Shorttle, Oliver.(2023).In-situ phosphate U-Pb ages of the L chondrites.GEOCHIMICA ET COSMOCHIMICA ACTA,359,191-204.
MLA Walton, Craig Robert,et al."In-situ phosphate U-Pb ages of the L chondrites".GEOCHIMICA ET COSMOCHIMICA ACTA 359(2023):191-204.

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。