Detrital zircon U–Pb age of graphite−hosting meta−sedimentary rocks in the Lüwang–Gaoqiao mélange belt, western Dabie area: Constraints on Mesoproterozoic marine sedimentary events

ZHU Jiang; CHEN Chao; LI Zhanke; WU Bo; WANG Guanghong; PENG Lianhong

doi:10.12029/gc20210107001

2024 Vol. 51, No. 5

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ZHU Jiang, CHEN Chao, LI Zhanke, WU Bo, WANG Guanghong, PENG Lianhong. 2024. Detrital zircon U–Pb age of graphite−hosting meta−sedimentary rocks in the Lüwang–Gaoqiao mélange belt, western Dabie area: Constraints on Mesoproterozoic marine sedimentary events[J]. Geology in China, 51(5): 1735-1747. doi: 10.12029/gc20210107001

Citation:

ZHU Jiang, CHEN Chao, LI Zhanke, WU Bo, WANG Guanghong, PENG Lianhong. 2024. Detrital zircon U–Pb age of graphite−hosting meta−sedimentary rocks in the Lüwang–Gaoqiao mélange belt, western Dabie area: Constraints on Mesoproterozoic marine sedimentary events[J]. Geology in China, 51(5): 1735-1747. doi: 10.12029/gc20210107001

Detrital zircon U–Pb age of graphite−hosting meta−sedimentary rocks in the Lüwang–Gaoqiao mélange belt, western Dabie area: Constraints on Mesoproterozoic marine sedimentary events

1.
Hubei Key Laboratory of Petroleum Geochemistry and Environment, College of Resources and Environment, Yangtze University, Wuhan 430100, Hubei, China
2.
Hubei Key Laboratory of Resources and Eco-environment Geology (Hubei Geological Bureau), Wuhan 430034, Hubei, China
3.
State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, Hubei, China
4.
Hubei Geological Survey, Wuhan 430034, Hubei, China
5.
School of Earth Resources, China University of Geosciences, Wuhan 430074, Hubei, China
6.
No.605 of Sichuan Province Metallurgy Geological Bureau, Meishan 620860, Sichuan, China
7.
Wuhan Center, China Geological Survey, Wuhan 430205, Hubei, China

Fund Project: Supported by the National Natural Science Foundation of China (No.42172103), Hubei Provincial Natural Science Foundation of China (No.2023AFD206), Open Fund of Hubei Key Laboratory of Resources and Eco−Environment Geology (No.HBREGKFJJ–202302), Most Special Fund from State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences (No.GPMR202424).

More Information

Author Bio: ZHU Jiang, male, born in 1985, senior engineer, mainly engaged in the research of mineral deposit and geochemistry; E-mail: zhujiang.01@foxmail.com

Received Date: 07 January 2021

Revised Date: 08 January 2022

Publish Date: 25 September 2024

Abstract

Abstract

This paper is the result of geological survey engineering.
Objective
To better understand the Paleo–Mesoproterozoic tectonic evolution of the Dabie orogen in the northern margin of Yangtze Block, we demonstrated the geological and geochronological characteristics for sedimentary rocks in the Lüwang–Gaoqiao mélange.
Methods
Geological mapping for the mélange was conducted. LA–ICP–MS zircon U–Pb isotopic analyses were carried out on the graphite−bearing quartzite.
Results
The graphite−bearing sedimentary rocks in Lüwang–Gaoqiao mélange are dominated by sandstones with high maturity, siliceous argillaceous rock, and carbonaceous. U–Pb dating reveals that the graphite−bearing quartzite has original deposition age of ~1.43 Ga, displaying detrital zircon age peaks at 2.55 Ga, 2.06 Ga, 1.86 Ga and 1.43 Ga. The sedimentary materials mainly came from the basement of the Yangtze Block.
Conclusions
The Mesoproterozoic clastic sedimentary rocks and carbonates from the Lüwang–Gaoqiao mélange were formed in a continental margin setting. They recorded an extensional regime for the Dabie orogen in the northern margin of Yangtze Block, during the break−up of the Columbia supercontinent.
- mélange /
- graphite deposit /
- sedimentary rocks /
- geochronology /
- tectonics /
- geological survey engineering /
- northern margin of the Yangtze Block

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References

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