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Hydrothermal evolution of the morphology, molecular composition, and distribution of organic matter in CR (Renazzo-type) chondrites

文献类型：期刊论文

作者Changela, Hitesh G.1,2; Le Guillou, Corentin3,4; Bernard, Sylvain4; Brearley, Adrian J.1
刊名METEORITICS & PLANETARY SCIENCE
出版日期2018-05-01
卷号53期号:5页码:1006-1029
ISSN号1086-9379
DOI10.1111/maps.13045
文献子类Article
英文摘要The morphology, molecular composition, and distribution of organic matter (OM) were investigated in a suite of CR chondrites to better constrain its hydrothermal evolution. Multiple focused ion beam sections were extracted from the matrices of seven CR chondrites. Scanning transmission X-ray microscopy and transmission electron microscopy reveal OM ubiquitously distributed across the CR matrices. OM mainly occurs as either discrete submicron rounded or irregularly shaped vein-like particles. Two spectral populations of organic particles were identified by carbon K-edge X-ray absorption near edge structure (XANES): the most abundant one, similar to insoluble organic matter (IOM) residues, contains aromatic, carbonyl, and carboxylic groups. The second population is more aromatic-rich and lacks a distinctive carbonyl peak. An additional, ubiquitous organic component occurs associated with amorphous silicates and phyllosilicates. Less aromatic but aliphatic- and carboxylic-rich, this diffuse OM is interpreted as the result of the redistribution of organic compounds by aqueous fluids. The most altered CR1 GRO 95577 contains a more mature OM and highly aliphatic- and carboxylic-rich diffuse OM. This evolution, from the CR2s to the CR1, is comparable to that of terrestrial gas shale maturation involving cracking reactions, releasing bitumen-like, aliphatic-, and carboxylic-rich compounds, and aromatic residues. Our observations support the accretion of soluble OM and its later polymerization to IOM, as well as the maturation of IOM and its partial oxidation, releasing mobile compounds. The differences in GRO 95577 are clearly attributable to the hydrothermal episode(s), but the relative role of water and temperature on the evolution of OM remains elusive.
WOS关键词INTERPLANETARY DUST PARTICLES ; EARLY SOLAR-SYSTEM ; ULTRACARBONACEOUS ANTARCTIC MICROMETEORITES ; PARENT BODY PROCESSES ; X-RAY-ABSORPTION ; CARBONACEOUS CHONDRITES ; AQUEOUS ALTERATION ; PRIMITIVE METEORITES ; ISOTOPIC COMPOSITION ; CM CHONDRITES
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000431665400005
出版者WILEY
资助机构NASA Cosmochemistry Grant(NNX12AH59G) ; NASA Cosmochemistry Grant(NNX12AH59G) ; NASA Cosmochemistry Grant(NNX12AH59G) ; NASA Cosmochemistry Grant(NNX12AH59G) ; NASA Cosmochemistry Grant(NNX12AH59G) ; NASA Cosmochemistry Grant(NNX12AH59G) ; NASA Cosmochemistry Grant(NNX12AH59G) ; NASA Cosmochemistry Grant(NNX12AH59G) ; NASA Cosmochemistry Grant(NNX12AH59G) ; NASA Cosmochemistry Grant(NNX12AH59G) ; NASA Cosmochemistry Grant(NNX12AH59G) ; NASA Cosmochemistry Grant(NNX12AH59G) ; NASA Cosmochemistry Grant(NNX12AH59G) ; NASA Cosmochemistry Grant(NNX12AH59G) ; NASA Cosmochemistry Grant(NNX12AH59G) ; NASA Cosmochemistry Grant(NNX12AH59G)
源URL[http://ir.iggcas.ac.cn/handle/132A11/88266]  
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Changela, Hitesh G.
作者单位1.Univ New Mexico, Dept Earth & Planetary Sci, Albuquerque, NM 87131 USA
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
3.Univ Lille1, CNRS UMR 8207, Unite Mat & Transformat UMET, F-59655 Villeneuve Dascq, France
4.Sorbonne Univ, IRD CNRS UMR 206, IMPMC, F-75005 Paris, France
推荐引用方式
GB/T 7714		 Changela, Hitesh G.,Le Guillou, Corentin,Bernard, Sylvain,et al. Hydrothermal evolution of the morphology, molecular composition, and distribution of organic matter in CR (Renazzo-type) chondrites[J]. METEORITICS & PLANETARY SCIENCE,2018,53(5):1006-1029.
APA Changela, Hitesh G.,Le Guillou, Corentin,Bernard, Sylvain,&Brearley, Adrian J..(2018).Hydrothermal evolution of the morphology, molecular composition, and distribution of organic matter in CR (Renazzo-type) chondrites.METEORITICS & PLANETARY SCIENCE,53(5),1006-1029.
MLA Changela, Hitesh G.,et al."Hydrothermal evolution of the morphology, molecular composition, and distribution of organic matter in CR (Renazzo-type) chondrites".METEORITICS & PLANETARY SCIENCE 53.5(2018):1006-1029.

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来源：地质与地球物理研究所

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