Next Article in Journal
Lithium Extraction from Lithium-Bearing Clay Minerals by Calcination-Leaching Method
Previous Article in Journal
Enhancing Deep Learning and Computer Image Analysis in Petrography through Artificial Self-Awareness Mechanisms
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Minerals
Volume 14
Issue 3
10.3390/min14030246
minerals-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
Comment published on 30 July 2024, see Minerals 2024, 14(8), 777.
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Article

New Age Constraints of the Bilong Co Oil Shale in the Qiangtang Basin, Northern Tibet: Evidence from In Situ U–Pb Dating and Palaeontology

by
Haowei Zhang
1,2,
Jian Wang
1,2,3,*,
Ahmed Mansour
1,2,4,
Jianyong Zhang
5,
Hengye Wei
1,2,
Xiugen Fu
1,2,3,
Lijun Shen
1,2,
Shaoyun Xiong
5,
Mohamed S. Ahmed
6 and
Thomas Gentzis
7,*
1
School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China
2
Qiangtang Institute of Sedimentary Basin, Southwest Petroleum University, Chengdu 610500, China
3
National Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610050, China
4
Geology Department, Faculty of Science, Minia University, Minia 61519, Egypt
5
Key Laboratory of Carbonate Reservoirs, CNPC, Hangzhou 310023, China
6
Geology and Geophysics Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
7
Core Laboratories, 6316 Windfern Road, Houston, TX 77040, USA
*
Authors to whom correspondence should be addressed.
Minerals 2024, 14(3), 246; https://doi.org/10.3390/min14030246
Submission received: 9 January 2024 / Revised: 10 February 2024 / Accepted: 24 February 2024 / Published: 28 February 2024
(This article belongs to the Topic Petroleum Geology and Geochemistry of Sedimentary Basins)
Browse Figures
Versions Notes

Abstract

The Bilong Co oil shale is one of the most significant source rocks in the Mesozoic Qiangtang Basin (Northern Tibet); however, its absolute chronology remains controversial. In this study, in situ carbonate U–Pb isotope dating analysis was carried out for the first time. Detailed field geological investigations yielded some age-diagnostic ammonites, enabling a re-evaluation of the stratigraphic age of the Bilong Co oil shale. A total of 61 spots of U–Pb isotope dating from the middle part of the Bilong Co oil shale section suggests an average age of 181 ± 13 Ma. Elemental geochemistry and diagenetic analysis indicate that the proposed age represents the early deposition of the calcite, and the oil shale was deposited during the Early Jurassic time. This estimated age is further supported by the newly discovered ammonite assemblage of Hildoceratidae–Tiltoniceras sp. at the top part of the oil shale section, which confirms the deposition of the oil shale during the Toarcian age of the late Early Jurassic. Consequently, the Bilong Co oil shale can be assigned to the Quse Formation, which is attributed to the Lower Jurassic rather than the Middle Jurassic. The re-assessment of the stratigraphic age of the Bilong Co oil shale is of great significance for regional evaluation and exploration activities of hydrocarbon source rock layers in the Qiangtang Basin as well as for global stratigraphic correlation of the late Early Jurassic Toarcian oceanic anoxic event.
Keywords: carbonate U–Pb geochronology; ammonite biostratigraphy; oil shales; Quse Formation; Early Jurassic; Tibetan Plateau carbonate U–Pb geochronology; ammonite biostratigraphy; oil shales; Quse Formation; Early Jurassic; Tibetan Plateau

Share and Cite

MDPI and ACS Style

Zhang, H.; Wang, J.; Mansour, A.; Zhang, J.; Wei, H.; Fu, X.; Shen, L.; Xiong, S.; Ahmed, M.S.; Gentzis, T. New Age Constraints of the Bilong Co Oil Shale in the Qiangtang Basin, Northern Tibet: Evidence from In Situ U–Pb Dating and Palaeontology. Minerals 2024, 14, 246. https://doi.org/10.3390/min14030246

AMA Style

Zhang H, Wang J, Mansour A, Zhang J, Wei H, Fu X, Shen L, Xiong S, Ahmed MS, Gentzis T. New Age Constraints of the Bilong Co Oil Shale in the Qiangtang Basin, Northern Tibet: Evidence from In Situ U–Pb Dating and Palaeontology. Minerals. 2024; 14(3):246. https://doi.org/10.3390/min14030246

Chicago/Turabian Style

Zhang, Haowei, Jian Wang, Ahmed Mansour, Jianyong Zhang, Hengye Wei, Xiugen Fu, Lijun Shen, Shaoyun Xiong, Mohamed S. Ahmed, and Thomas Gentzis. 2024. "New Age Constraints of the Bilong Co Oil Shale in the Qiangtang Basin, Northern Tibet: Evidence from In Situ U–Pb Dating and Palaeontology" Minerals 14, no. 3: 246. https://doi.org/10.3390/min14030246

APA Style

Zhang, H., Wang, J., Mansour, A., Zhang, J., Wei, H., Fu, X., Shen, L., Xiong, S., Ahmed, M. S., & Gentzis, T. (2024). New Age Constraints of the Bilong Co Oil Shale in the Qiangtang Basin, Northern Tibet: Evidence from In Situ U–Pb Dating and Palaeontology. Minerals, 14(3), 246. https://doi.org/10.3390/min14030246

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop