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Biomarkers and C and S Isotopes of the Permian to Triassic Solid Bitumen and Its Potential Source Rocks in NE Sichuan Basin
Joint Authors
Cai, Chunfang
Xu, Chenlu
He, Wenxiang
Zhang, Chunming
Li, Hongxia
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-08-13
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
The potential parent source rocks except from Upper Permian Dalong Formation (P3d) for Upper Permian and Lower Triassic solid bitumen show high maturity to overmaturity with equivalent vitrinite reflectance (ERo) from 1.7% to 3.1% but have extractable organic matter likely not contaminated by younger source rocks.
P3d source rocks were deposited under euxinic environments as indicated by the pyrite δ34S values as light as -34.5‰ and distribution of aryl isoprenoids, which were also detected from the Lower Silurian (S1l) source rock and the solid bitumen in the gas fields in the west not in the east.
All the solid bitumen not altered by thermochemical sulfate reduction (TSR) has δ13C and δ34S values similar to part of the P3l kerogens and within the S1l kerogens.
Thus, the eastern solid bitumen may have been derived from the P3l kerogens, and the western solid bitumen was likely to have precracking oils from P3l kerogens mixed with the S1l or P3d kerogens.
This case-study tentatively shows that δ13C and δ34S values along with biomarkers have the potential to be used for the purpose of solid bitumen and source rock correlation in a rapidly buried basin, although further work should be done to confirm it.
American Psychological Association (APA)
Cai, Chunfang& Xu, Chenlu& He, Wenxiang& Zhang, Chunming& Li, Hongxia. 2017. Biomarkers and C and S Isotopes of the Permian to Triassic Solid Bitumen and Its Potential Source Rocks in NE Sichuan Basin. Geofluids،Vol. 2017, no. 2017, pp.1-14.
https://search.emarefa.net/detail/BIM-1155671
Modern Language Association (MLA)
Cai, Chunfang…[et al.]. Biomarkers and C and S Isotopes of the Permian to Triassic Solid Bitumen and Its Potential Source Rocks in NE Sichuan Basin. Geofluids No. 2017 (2017), pp.1-14.
https://search.emarefa.net/detail/BIM-1155671
American Medical Association (AMA)
Cai, Chunfang& Xu, Chenlu& He, Wenxiang& Zhang, Chunming& Li, Hongxia. Biomarkers and C and S Isotopes of the Permian to Triassic Solid Bitumen and Its Potential Source Rocks in NE Sichuan Basin. Geofluids. 2017. Vol. 2017, no. 2017, pp.1-14.
https://search.emarefa.net/detail/BIM-1155671
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1155671