Insights into the origin of carbonaceous chondrite organics from their triple oxygen isotope compositionCitation formats

  • Authors:
  • Romain Tartese
  • Marc Chaussidon
  • Andrey Gurenko
  • Frédéric Delarue
  • Francois Robert

Standard

Insights into the origin of carbonaceous chondrite organics from their triple oxygen isotope composition. / Tartese, Romain; Chaussidon, Marc; Gurenko, Andrey; Delarue, Frédéric; Robert, Francois.

In: Proceedings of the National Academy of Sciences of the United States of America, 2018.

Research output: Contribution to journalArticle

Harvard

Tartese, R, Chaussidon, M, Gurenko, A, Delarue, F & Robert, F 2018, 'Insights into the origin of carbonaceous chondrite organics from their triple oxygen isotope composition', Proceedings of the National Academy of Sciences of the United States of America. https://doi.org/10.1073/pnas.1808101115

APA

Tartese, R., Chaussidon, M., Gurenko, A., Delarue, F., & Robert, F. (2018). Insights into the origin of carbonaceous chondrite organics from their triple oxygen isotope composition. Proceedings of the National Academy of Sciences of the United States of America. https://doi.org/10.1073/pnas.1808101115

Vancouver

Tartese R, Chaussidon M, Gurenko A, Delarue F, Robert F. Insights into the origin of carbonaceous chondrite organics from their triple oxygen isotope composition. Proceedings of the National Academy of Sciences of the United States of America. 2018. https://doi.org/10.1073/pnas.1808101115

Author

Tartese, Romain ; Chaussidon, Marc ; Gurenko, Andrey ; Delarue, Frédéric ; Robert, Francois. / Insights into the origin of carbonaceous chondrite organics from their triple oxygen isotope composition. In: Proceedings of the National Academy of Sciences of the United States of America. 2018.

Bibtex

@article{2aa2ecab6e4142589b86035d1995910c,
title = "Insights into the origin of carbonaceous chondrite organics from their triple oxygen isotope composition",
abstract = "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.",
keywords = "carbonaceous chondrites, organic matter, oxygen isotopes, protosolar nebula, secondary ion mass, spectrometry",
author = "Romain Tartese and Marc Chaussidon and Andrey Gurenko and Fr{\'e}d{\'e}ric Delarue and Francois Robert",
year = "2018",
doi = "10.1073/pnas.1808101115",
language = "English",
journal = "Proceedings of the National Academy of Sciences",
issn = "0027-8424",
publisher = "National Academy of Sciences",

}

RIS

TY - JOUR

T1 - Insights into the origin of carbonaceous chondrite organics from their triple oxygen isotope composition

AU - Tartese, Romain

AU - Chaussidon, Marc

AU - Gurenko, Andrey

AU - Delarue, Frédéric

AU - Robert, Francois

PY - 2018

Y1 - 2018

N2 - 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.

AB - 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.

KW - carbonaceous chondrites

KW - organic matter

KW - oxygen isotopes

KW - protosolar nebula

KW - secondary ion mass

KW - spectrometry

U2 - 10.1073/pnas.1808101115

DO - 10.1073/pnas.1808101115

M3 - Article

JO - Proceedings of the National Academy of Sciences

JF - Proceedings of the National Academy of Sciences

SN - 0027-8424

ER -