Geological characteristics and age of the Luoguhe mudstone in the western section of Mohe basin

XU Jianxin; ZHOU Chuanfang; YANG Huaben; DUAN Mingxin; WEI Xiaoyong; CAI Yanlong; GAO Hu

doi:10.12097/j.issn.1671-2552.2023.2-3.015

2023 Vol. 42, No. 2-3

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XU Jianxin, ZHOU Chuanfang, YANG Huaben, DUAN Mingxin, WEI Xiaoyong, CAI Yanlong, GAO Hu. 2023. Geological characteristics and age of the Luoguhe mudstone in the western section of Mohe basin. Geological Bulletin of China, 42(2-3): 376-384. doi: 10.12097/j.issn.1671-2552.2023.2-3.015

Citation:

XU Jianxin, ZHOU Chuanfang, YANG Huaben, DUAN Mingxin, WEI Xiaoyong, CAI Yanlong, GAO Hu. 2023. Geological characteristics and age of the Luoguhe mudstone in the western section of Mohe basin. Geological Bulletin of China, 42(2-3): 376-384. doi: 10.12097/j.issn.1671-2552.2023.2-3.015

Geological characteristics and age of the Luoguhe mudstone in the western section of Mohe basin

1.
Harbin Center for Integrated Natural Resources Survey, China Geological Survey, Harbin 150081, Heilongjiang, China
2.
Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China

Received Date: 04 November 2021

Revised Date: 21 February 2022

Publish Date: 15 March 2023

Abstract

Abstract

We identify a new set of rock assemblage mainly composed of black mudstone interbedded with siltstone, feldspar sandstone and tuff. The rocks are widely mylonitized with isoclinal folds, A lineation, S-C fabric, augen structure and so on.It is named as Luoguhe mudstone.The dating result of zircon LA-ICP-MS U-Pb in tuff interlayer is 176.3±1.1 Ma, indicating that the Luoguhe mudstone was formed in the Early-Middle Jurassic, it thrusted overthrust in Upper Jurassic Mohe Formation.The thrust direction was from NW to SE.The Luoguhe mudstone could be compared with the Lower-Middle Jurassic strata in the Upper Amur Basin and it probably came from the Upper Amur Basin.
- Mohe basin /
- Luoguhe mudstone /
- mudstone age /
- thrust nappe /
- the Upper Amur Basin

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References

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