矩分析法及其在粤北韶关地区金属成矿作用研究中的应用  

THE METHOD OF MOMENTS AND ITS APPLICATION TO THE STUDY OF MINERALIZATION IN SHAOGUAN DISTRICT, NORTH GUANGDONG, CHINA

作　　者：谢淑云[1] 鲍征宇[1] 

机构地区：[1]中国地质大学地球科学学院,湖北武汉430074

出　　处：《吉林大学学报（地球科学版）》2003年第4期443-448,共6页Journal of Jilin University：Earth Science Edition

基　　金：国家自然科学基金重点项目(49633120);国土资源部自由探索科技项目(2000401)

摘　　要：采用多重分形矩分析法探讨了粤北韶关地区4292km2内1448个基岩样品的25项元素的分形分布规律。结果表明,金属地球化学场元素的多重分形谱函数上凸且连续,其多重分形谱函数的开口大小在某种程度上能反映地球化学场的浓集程度。地球化学场中元素在空间上的分布具有连续多重分形特征,与成矿密切相关的微量元素一般服从左侧开口明显大于右侧开口的连续多重分形左偏模式,而非主要成矿元素则对应右侧开口大的连续多重分形右偏模式。It's of great significance to study geochemical element distribution patterns by using fractal and multifractal methods. Based on a typical multifractal method-the method of moments, this paper studied the multifractal spectrum function shapes of some elements in metallic geochemical fields. The data include 25 elements of 1448 whole rock samples from a region of 4 292 km2 in the north Guangdong as a case study had been applied. The results indicate that:the metallic geochemical fields are multifractal and there are two kinds of multifractals named left-deviation continuous multifractal model(LCM model) and right-deviation continuous multifractal model(RCM model), here. And LCM model is closely related to some major ore-forming elements and those non-ore-forming elements are associated with RCM model to some degree.

关 键 词：金属 成矿作用 多重分形 地球化学 矩分析法 粤北韶关地区 

分 类 号：P618.2[天文地球—矿床学] P595[天文地球—地质学]