Geochemical characteristics of Late Paleozoic magmatic rocks in southern Mongolia

XI Hong; LI Junjian; LI Huaming; FU Chao; DANG Zhicai; TANG Wenlong

doi:10.19948/j.12-1471/P.2023.04.02

2023 Vol. 46, No. 4

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XI Hong, LI Junjian, LI Huaming, FU Chao, DANG Zhicai, TANG Wenlong. 2023. Geochemical characteristics of Late Paleozoic magmatic rocks in southern Mongolia. North China Geology, 46(4): 10-21. doi: 10.19948/j.12-1471/P.2023.04.02

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XI Hong, LI Junjian, LI Huaming, FU Chao, DANG Zhicai, TANG Wenlong. 2023. Geochemical characteristics of Late Paleozoic magmatic rocks in southern Mongolia. North China Geology, 46(4): 10-21. doi: 10.19948/j.12-1471/P.2023.04.02

Geochemical characteristics of Late Paleozoic magmatic rocks in southern Mongolia

1. CNNC Geologic Party No.208, Baotou, Inner Mongolia 014010, China;
2. Tianjin Center, China Geological Survey (North China Center for Geoscience Innovation ), Tianjin 300170, China

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Corresponding author: LI Junjian

Received Date: 17 July 2023

Abstract

Abstract

The late Paleozoic Variscan orogenic belt in southern Mongolia plays an important role in the Central Asia orogenic belt, but the formation time of the collision has been controversial due to various factors.In this paper, the geochemical characteristics of the late Paleozoic magmatic rocks in southern Mongolia are preliminarily summarized by collecting and using the previous geochemical data.It is suggested that island arc began to form in Devonian in this area, and island arc was still dominant in Early Carboniferous, but continental margin arc appeared, while intraplate magmatism was more typical in Late Carboniferous.At this time, island arc magmatism related to subduction in southern Mongolia basically stopped and turned into intraplate tectonic stage, and the intraplate characteristics were more obvious in Permian, at this time, volcanic activity had stopped, which was related to the formation of Central Asia.The mountain belt is related to the stage of amalgamation, which is the intraplate tectonic environment.So this paper can provide some meaningful references for the late Paleozoic tectonic evolution framework in southern Mongolia.
- Magmatic rocks /
- geochemistry /
- Late Paleozoic /
- southern Mongolia

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References

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