矿床地质2024，Vol.43Issue(2)：359-372,14.DOI:10.16111/j.0258-7106.2024.02.008
西秦岭夏河-合作地区断裂构造分形结构特征及成矿预测
Fractal structural characteristics of fault structures and metallogenic prediction in Xiahe-Hezuo region of West Qinling Mountains
摘要
Abstract
The Xiahe-Hezuo area in the West Qinling Mountains is an important mining area for gold and polymetallic deposits in China,with complex fault structures and significant structural ore control.In this paper,the fractal the-ory method is used to quantitatively analyze the fracture structure in different directions in the Xiahe-Hezuo area,statistically calculate the fracture structure capacity and information dimension,combining with the fractal charac-teristics of the spatial distribution of the deposit and the Fry analysis of the deposit,the fractal characteristics of the structure of the study area and the spatial distribution relationship between the fracture and the deposit are dis-cussed.The results show that the total fracture capacity dimension of the study area is 1.2374,the north-east frac-ture capacity dimension is 0.8229,the north-west fracture capacity dimension is 1.2296,and the near-east-west fracture capacity dimension is 1.0312,and the total fracture capacity and the north-west fracture capacity dimen-sion are in the fracture fractal critical value(1.22～1.38)region,indicating that the fracture tectonic connectivity of the study area is good.The information dimension of all faults in the study area is 1.1118,the information di-mension of the north-east fault is 1.018,the information dimension of the north-west fault is 1.2296,the informa-tion dimension of the near-east-west fault is 1.0217,and the information dimension of the north-west fault is in the fracture fractal critical value area,reflecting the strongest control of the deposit in the north-west direction.Fracture structure fractal dimension can be used to characterize the sedimentary site of the ore,and three favor-able mineralization areas are identified by capacity dimension,information dimension contour map and Fry dia-gram.关键词
分形维数/Fry分析/断裂构造/金矿分布/西秦岭夏河-合作地区Key words
fractal dimension/Fry analysis/fault structure/gold distribution/Xiahe-Hezuo area in West Qin-ling mountains分类
天文与地球科学引用本文复制引用
张元,王红岩,李育,杨剑,胡杨,李永恒,李彩霞,任涛..西秦岭夏河-合作地区断裂构造分形结构特征及成矿预测[J].矿床地质,2024,43(2):359-372,14.基金项目
本文得到国家自然科学基金项目(编号:42072094、42162012)和校企合作项目(编号:2023FW62)联合资助 （编号:42072094、42162012）
