A primordial (15)N-depleted organic component detected within the carbonaceous chondrite Maribo.
A primordial (15)N-depleted organic component detected within the carbonaceous chondrite Maribo.
复制标题
原始(15)n耗尽的有机成分,在碳质的软骨中检测到。
DOI:
10.1038/s41598-020-77190-z
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发表时间:
2020-11-20
影响因子:
4.6
通讯作者:
Hoppe P
中科院分区:
文献类型:
--
作者:
Vollmer C;Leitner J;Kepaptsoglou D;Ramasse QM;King AJ;Schofield PF;Bischoff A;Araki T;Hoppe P
We report on the detection of primordial organic matter within the carbonaceous chondrite Maribo that is distinct from the majority of organics found in extraterrestrial samples. We have applied high-spatial resolution techniques to obtain C-N isotopic compositions, chemical, and structural information of this material. The organic matter is depleted in 15N relative to the terrestrial value at around δ15N ~ -200‰, close to compositions in the local interstellar medium. Morphological investigations by electron microscopy revealed that the material consists of µm- to sub-µm-sized diffuse particles dispersed within the meteorite matrix. Electron energy loss and synchrotron X-ray absorption near-edge structure spectroscopies show that the carbon functional chemistry is dominated by aromatic and C=O bonding environments similar to primordial organics from other carbonaceous chondrites. The nitrogen functional chemistry is characterized by C-N double and triple bonding environments distinct from what is usually found in 15N-enriched organics from aqueously altered carbonaceous chondrites. Our investigations demonstrate that Maribo represents one of the least altered CM chondrite breccias found to date and contains primordial organic matter, probably originating in the interstellar medium.
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影响因子:
4.9
作者:
Abbas, MM;LeClair, A;Romani, PN
通讯作者:
Romani, PN
影响因子:
2.2
作者:
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通讯作者:
Brearley, Adrian J.
影响因子:
6.5
作者:
Hily-Blant, P.;de Souza, V. Magalhaes;Forveille, T.
通讯作者:
Forveille, T.
影响因子:
6.5
作者:
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通讯作者:
Borondics, F.
DOI:
10.1073/pnas.0901546106
发表时间:
2009-06-30
影响因子:
11.1
作者:
Briani, Giacomo;Gounelle, Matthieu;Meibom, Anders
通讯作者:
Meibom, Anders