scholarly journals Organic matter in carbonaceous chondrite lithologies of Almahata Sitta: Incorporation of previously unsampled carbonaceous chondrite lithologies into ureilitic regolith

2021 ◽  
Author(s):  
Yoko Kebukawa ◽  
Michael. E. Zolensky ◽  
Cyrena A. Goodrich ◽  
Motoo Ito ◽  
Nanako O. Ogawa ◽  
...  
Keyword(s):  
Organic Matter ◽  
Carbonaceous Chondrite

scholarly journals A primordial 15N-depleted organic component detected within the carbonaceous chondrite Maribo

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Christian Vollmer ◽  
Jan Leitner ◽  
Demie Kepaptsoglou ◽  
Quentin M. Ramasse ◽  
Ashley J. King ◽  
...  
Keyword(s):  
Organic Matter ◽  
Interstellar Medium ◽  
Structural Information ◽  
Carbonaceous Chondrite ◽  
Carbonaceous Chondrites ◽  
Local Interstellar Medium ◽  
Edge Structure ◽  
Electron Energy Loss ◽  
Cm Chondrite ◽  
X Ray Absorption

AbstractWe 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.

Molecular and compound-specific hydrogen isotope analyses of insoluble organic matter from different carbonaceous chondrite groups

2005 ◽  
Vol 69 (14) ◽  
pp. 3711-3721 ◽  
Author(s):  
Yi Wang ◽  
Yongsong Huang ◽  
Conel M.O.’D. Alexander ◽  
Marilyn Fogel ◽  
George Cody
Keyword(s):  
Organic Matter ◽  
Hydrogen Isotope ◽  
Carbonaceous Chondrite ◽  
Insoluble Organic Matter ◽  
Isotope Analyses

The secondary history of Sutter's Mill CM carbonaceous chondrite based on water abundance and the structure of its organic matter from two clasts

2014 ◽  
Vol 49 (11) ◽  
pp. 2064-2073 ◽  
Author(s):  
P. Beck ◽  
E. Quirico ◽  
A. Garenne ◽  
Q.-Z. Yin ◽  
L. Bonal ◽  
...  
Keyword(s):  
Organic Matter ◽  
Carbonaceous Chondrite ◽  
Water Abundance ◽  
History Of

scholarly journals Nano-FTIR spectroscopic identification of prebiotic carbonyl compounds in Dominion Range 08006 carbonaceous chondrite

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mehmet Yesiltas ◽  
Timothy D. Glotch ◽  
Bogdan Sava
Keyword(s):  
Organic Matter ◽  
Solar System ◽  
Origin Of Life ◽  
Carboxylic Acids ◽  
Spatial Resolution ◽  
Carbonyl Compounds ◽  
Carbonaceous Chondrite ◽  
Parent Body ◽  
Early Solar System ◽  
The Origin Of Life

AbstractMeteorites contain organic matter that may have contributed to the origin of life on Earth. Carbonyl compounds such as aldehydes and carboxylic acids, which occur in meteorites, may be precursors of biologically necessary organic materials in the solar system. Therefore, such organic matter is of astrobiological importance and their detection and characterization can contribute to the understanding of the early solar system as well as the origin of life. Most organic matter is typically sub-micrometer in size, and organic nanoglobules are even smaller (50–300 nm). Novel analytical techniques with nanoscale spatial resolution are required to detect and characterize organic matter within extraterrestrial materials. Most techniques require powdered samples, consume the material, and lose petrographic context of organics. Here, we report the detection of nanoglobular aldehyde and carboxylic acids in a highly primitive carbonaceous chondrite (DOM 08006) with ~ 20 nm spatial resolution using nano-FTIR spectroscopy. Such organic matter is found within the matrix of DOM 08006 and is typically 50–300 nm in size. We also show petrographic context and nanoscale morphologic/topographic features of the organic matter. Our results indicate that prebiotic carbonyl nanoglobules can form in a less aqueous and relatively elevated temperature-environment (220–230 °C) in a carbonaceous parent body.

scholarly journals Insights into the origin of carbonaceous chondrite organics from their triple oxygen isotope composition

2018 ◽  
Vol 115 (34) ◽  
pp. 8535-8540 ◽  
Author(s):  
Romain Tartèse ◽  
Marc Chaussidon ◽  
Andrey Gurenko ◽  
Frédéric Delarue ◽  
François Robert
Keyword(s):  
Organic Matter ◽  
Oxygen Isotope ◽  
Carbonaceous Chondrite ◽  
Isotope Composition ◽  
Isotopic Fractionation ◽  
Oxygen Isotope Composition ◽  
Insoluble Organic Matter ◽  
O Isotope ◽  
Protosolar Nebula ◽  
Mass Dependent

Dust grains of organic matter were the main reservoir of C and N in the forming Solar System and are thus considered to be an essential ingredient for the emergence of life. However, the physical environment and the chemical mechanisms at the origin of these organic grains are still highly debated. In this study, we report high-precision triple oxygen isotope composition for insoluble organic matter isolated from three emblematic carbonaceous chondrites, Orgueil, Murchison, and Cold Bokkeveld. These results suggest that the O isotope composition of carbonaceous chondrite insoluble organic matter falls on a slope 1 correlation line in the triple oxygen isotope diagram. The lack of detectable mass-dependent O isotopic fractionation, indicated by the slope 1 line, suggests that the bulk of carbonaceous chondrite organics did not form on asteroidal parent bodies during low-temperature hydrothermal events. On the other hand, these O isotope data, together with the H and N isotope characteristics of insoluble organic matter, may indicate that parent bodies of different carbonaceous chondrite types largely accreted organics formed locally in the protosolar nebula, possibly by photochemical dissociation of C-rich precursors.

scholarly journals Molecular study of insoluble organic matter in Kainsaz CO3 carbonaceous chondrite: Comparison with CI and CM IOM

2008 ◽  
Vol 43 (7) ◽  
pp. 1099-1111 ◽  
Author(s):  
Laurent REMUSAT ◽  
Corentin GUILLOU ◽  
Jean-Noël ROUZAUD ◽  
Laurent BINET ◽  
Sylvie DERENNE ◽  
...  
Keyword(s):  
Organic Matter ◽  
Carbonaceous Chondrite ◽  
Molecular Study ◽  
Insoluble Organic Matter
Sign in / Sign up

Export Citation Format

Share Document