Abiogenic gas: Should the carbon isotope order be reversed?

1Citations
Citations of this article
23Readers
Mendeley users who have this article in their library.
Get full text

Abstract

Biogenic gases were reported to exhibit a "normal" carbon isotope order of δ 13 C 1 <δ 13 C 2 <δ 13 C 3 <δ 13 C 4 , while abiogenic gaseous hydrocarbons in igneous rocks and meteorites exhibit a reversed distribution pattern in the order of δ 13 C 1 >δ 13 C 2 >δ 13 C 3 >δ 13 C 4 . This reversed order in carbon isotope compositions is commonly thought to be unique to abiogenic gases, thus it can be a criterion for determining their origins. In this study, a closed system Fischer-Tropsch synthesis was conducted at 380°C under 30MPa and 390°C under 30MPa, 100MPa, 200MPa, respectively, with magnetite as a catalyst. Results of carbon isotope compositions of gaseous hydrocarbons were derived, which do not show an expected reversed order in carbon isotope composition from C 1 to C 3 hydrocarbons, even though features of partially reversed order in carbon isotope values, such as δ 13 C 1 >δ 13 C 2 <δ 13 C 3 , can still be commonly observed. This indicates that the reversed order of carbon isotope composition is not a unique criterion that can be typically used to distinguish abiogenic gases. © 2012 Elsevier B.V.

Cite

CITATION STYLE

APA

Wei, Z., Zou, Y. R., Cai, Y., Tao, W., Wang, L., Guo, J., & Peng, P. (2012). Abiogenic gas: Should the carbon isotope order be reversed? Journal of Petroleum Science and Engineering, 8485, 29–32. https://doi.org/10.1016/j.petrol.2012.01.019

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free