Orogenic Gold Metallogenic System in North Margin of Yangtze Block: Preliminary Study on Tectonic Evolution and Mineralization

3rd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Wang, Yizhong^1 ; Wang, Dequan^2 ; Wang, Jianguo^2 ; Deng, Shengbo^1

Sino Shaanxi Nuclear Industry Group 214 Brigade Co., Ltd.^1

Sino Shaanxi Nuclear Industry Group, Shaanxi Province, China^2

关键词: Continental collisions;    Deposit characteristics;    Geological conditions;    Geological evolution;    Geological structures;    Geophysical exploration;    Gold mineralization;    Tectonic evolution;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/300/2/022144/pdf
DOI  :  10.1088/1755-1315/300/2/022144

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The northern margin of the Yangtze massif is mainly composed of Longmenshan orogenic belt, Hannan-Micangshan uplift and Beidabashan arcuate tectonic belt. The strata are composed of sedimentary caprock and basement. The basement is Archaean-Lower Proterozoic and Mesoproterzoic volcanic rocks. Continental collision between North China plate and Yangtze plate, the three secondary tectonic units have very high similarities in geological structure, geological evolution, mineralization and deposit characteristics. Therefore, we believe that the northern margin of the Yangtze block can be classified as a metallogenic belt. The orogenic gold metallogenic belt on the northern margin of the Yangtze massif has geological conditions for forming large-scale gold deposits. However, the formation time of the gold deposit is younger, lower crustal uplift, and the degree of erosion of the sedimentary caprock is weak. The deep ore-rich body has not exposed the surface. It is suggested to carry out systematic comprehensive aeromagnetic, voyage weight, avionics and other geophysical exploration work in the gold mineralization belt on the northern margin of the Yangtze block. Finally, a favorable target area is delineated.