Tectonic metallogenic characteristics of Late Mesozoic magmatic core complex uplift-detachment zone in eastern China and prospecting for gold-polymetallic ore fields

ZHANG Baolin; LYU Guxian; SHEN Xiaoli; TANG Hejun; ZHANG Zhuang

doi:10.12097/j.issn.1671-2552.2023.04.002

2023 Vol. 42, No. 4

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ZHANG Baolin, LYU Guxian, SHEN Xiaoli, TANG Hejun, ZHANG Zhuang. 2023. Tectonic metallogenic characteristics of Late Mesozoic magmatic core complex uplift-detachment zone in eastern China and prospecting for gold-polymetallic ore fields. Geological Bulletin of China, 42(4): 510-519. doi: 10.12097/j.issn.1671-2552.2023.04.002

Citation:

ZHANG Baolin, LYU Guxian, SHEN Xiaoli, TANG Hejun, ZHANG Zhuang. 2023. Tectonic metallogenic characteristics of Late Mesozoic magmatic core complex uplift-detachment zone in eastern China and prospecting for gold-polymetallic ore fields. Geological Bulletin of China, 42(4): 510-519. doi: 10.12097/j.issn.1671-2552.2023.04.002

Tectonic metallogenic characteristics of Late Mesozoic magmatic core complex uplift-detachment zone in eastern China and prospecting for gold-polymetallic ore fields

1.
Key Laboratory of Mineral Resources, Institute of Geology and Geophysics/Chinese Academy of Sciences, Beijing 100029, China
2.
Innovation Academy for Earth Science, Chinese Academy of Sciences, Beijing 100029, China
3.
University of Chinese Academy of Sciences, Beijing 100049, China
4.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
5.
College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, China
6.
Chinese Academy of Geological Sciences, Beijing 100037, China
7.
Chifeng Chaihulanzi Gold Mining Co.Ltd., Chifeng 024005, Inner Mongolia, China

Received Date: 04 July 2022

Revised Date: 28 August 2022

Publish Date: 15 April 2023

Abstract

Abstract

Extensional structures developed in the Late Mesozoic in eastern China, which induced intense magmatic activity and large-scale metallogenic events.This paper will extend structure of the Late Mesozoic magmatic core complex and edge exposed detachment fault as the main logo, the multiphase magmatic intrusion formed metamorphic core complex and extensional dome are classified as the structural category of Late Mesozoic magmatic core complex uplift-detachment belts.The former mainly forms deep-sourced gold-polymetallic deposits, while the latter mainly forms shallow-sources non-ferrous metal deposits.The former is mainly distributed in the area of ancient metamorphic rocks, while the latter mainly occurred in the area of Paleozoic sedimentary-volcanic rocks.The inducement of magmatic uptrusion is mainly related to the subduction-reentry mechanism of the Pacific plate in Late Mesozoic.Combining with geophysical data, the deep controlling factors of magmatic core complex are discussed.Based on the post-magmatic hydrothermal metallogenic model of magmatic core complex uplift-detachment zone, the distribution, metallogenic conditions and prospecting criteria of magmatic hydrothermal deposits of precious and non-ferrous metals are summarized.A new direction of mesoscale ore field prospecting is proposed, and favorable concealed prospect areas are predicted in southern Liaonan and northern Anhui.
- eastern China /
- Late Mesozoic /
- magmatic core complex uplift-detachment zone /
- tectonic ore-controlling /
- concealed ore field exploration

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References

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