Magma emplacement can restrict the nature and distribution of an ore deposit, and is an important topic for the study of mineralization mechanisms. Previous studies of magma emplacement have focused mainly on the superimposed mineralization of multi-stage magma in time, whereas the superimposed characteristics and mineralization of different magma emplacement in space are unclear. We estimate a 3-D multiple geophysical model in the Shuangjianzishan Ag-Pb-Zn district, northeastern China, using gravity, magnetic, magnetotelluric and seismic data. The model describes the distribution of buried magmatic rocks related to mineralization in the ore district and highlights the detailed structure and connection of volcanism and intrusion. The volcanism is characterized by a tree-like structure consisting of a near-conical channel and an annular fault system; the intrusion appears as a dome-shaped structure, and its lateral distribution is controlled by faults. The geophysical results reveal a deep fault system connecting volcanism and intrusion. Combining the results with regional geology, petrophysical properties and borehole information, we propose a composite metallogenic model for the ore district, which is that the volcanism caused the ore-bearing magma to migrate to the present-day location of the base of the ore deposit through the deep fault system, and formed an intrusive complex with the orebearing magma emplaced in a dome below the present-day location of the deposit. This resulted in the formation of complex and fault-controlled ore bodies. Reviewing the global metallogenic characteristics related to magmatism, our results demonstrate the magma emplacement pattern of a composite volcanic-intrusive system may be an important factor for the formation of super-large deposits.KeywordsVolcanism • Dome-shaped intrusion • Composite magma emplacement • Multiple geophysical investigation • Superimposed mineralization Article Highlights • Using multiple geophysical data, the geophysical and structural characteristics of the magma emplacement of a composite volcanic-intrusive system were discovered Extended author information available on the last page of the article• Fault systems are the main controlling factors for the accumulation and emplacement of ore-forming magma in the composite magma system • In the the composite magma system, the ore-forming fluids were derived from magmatic intrusion and volcanism, and mineralization occurred at their intersection

Yihao Wu

Jiangtao Han

Guoqing Ma

Yunhe Liu

Fuxing Han

Lijia Liu

Lei Guo

Ye Guan

Yinghui Zhang

Surveys in Geophysics

地球物理学调查发表了关于地球内部、地表、大气和近地空间环境中发生的物理、化学和生物过程的评论文章，包括与太阳系中其他天体的关系。涉及任何地球和空间科学的论文都涵盖了观测、其解释、理论和建模。

The journal "Surveys in Geophysics" publishes review articles on the physical, chemical, and biological processes occurring in the Earth's interior, on its surface, in the atmosphere, and in the near-Earth space environment. These articles also discuss the relationships with other celestial bodies in the solar system. Papers covering any aspect of Earth and space sciences include observations, interpretations, theories, and modeling.

《Surveys in Geophysics》期刊发表关于地球内部、地表、大气和近地空间环境中发生的物理、化学和生物过程的评论文章。这些文章还包括与太阳系中其他天体的关系。涉及任何地球和空间科学的论文都涵盖了观测、解释、理论和建模等方面。

Category	Quartile
地球科学	2
地球科学, 地球化学与地球物理	2

The Magma Emplacement of a Composite Volcanic-Intrusive System and Its Mineralization

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Journal Info

Category	Quartile
GEOCHEMISTRY & GEOPHYSICS	1