新疆塔什库尔干—莎车一带断裂体系的分形特征及找矿预测  

Fractal Characteristics of Fault System and Ore-prospecting Prediction of Taxkorgan-Shache Area of Xinjiang

作　　者：高永璋[1,2] 张寿庭[1,2] 孙社良[2] 顾文帅[2] 马永飞[2] 白云[3] 

机构地区：[1]中国地质大学地质过程与矿产资源国家重点实验室,北京100083 [2]中国地质大学地球科学与资源学院,北京100083 [3]成都理工大学地球科学学院,四川成都610059

出　　处：《现代地质》2011年第1期101-107,共7页Geoscience

基　　金：中国地质调查局青藏高原专项(1212010818089)

摘　　要：断裂体系在成矿流体的运移和聚集过程中起着重要的控制作用,是重要的导矿和容矿构造,断裂分维值的大小是断层数量、规模、组合方式及动力学机制的综合体现,可以作为断裂构造复杂程度的一个定量参数。新疆塔什库尔干—莎车一带断裂因素主控了矿(床)点的分布。应用分形几何方法对该区Ⅰ、Ⅱ-1、Ⅱ-2和Ⅲ各成矿区带断裂进行了研究,表明其断裂分布具有自相似性,断裂分数维值分别为1.49、1.33、1.34和1.22,成矿有利性量化从大到小依次为Ⅰ>Ⅱ>Ⅲ,各带主攻矿种分别为铅锌铜矿、铅锌多金属矿和磁铁矿。此研究为新疆塔什库尔干—莎车一带区域矿产勘查指明了方向。The fault system is an important ore-channeling and ore-hosting structure,which plays an important role in controlling the migration and accumulation of ore-forming fluid.The fractal dimension value of the fault system is a comprehensive embodiment of the fault amount,scale,assembly pattern and dynamic mechanism.It can be a quantitative parameter to describe the complexity of the fault system.The distribution of ore deposit（occurrences） is controlled by fracture in Taxkorgan-Shache area of Xinjiang,and the fractal geometry study of the Ⅰ,Ⅱ-1,Ⅱ-2 and Ⅲ metallogenic districts indicated that these fracture systems possess the well statistical self-similar character,and the fractal dimension value were as follows： 1.49,1.33,1.34 and 1.22.The quantitative ordination of the metallogenic potential in this area isⅠ〉Ⅱ〉Ⅲ,and the target ores of the meta-llogenic districts are lead-zinc-copper deposit,lead-zinc polymetallic deposit and magnetite.This study points out the orientation of prospecting in Taxkorgan-Shache of Xinjiang Uygur Autonomous Region.

关 键 词：断裂 分形特征 新疆塔什库尔干—莎车 找矿预测 

分 类 号：P628[天文地球—地质矿产勘探]