青藏高原安多地区找矿潜力分析

Analysis of prospecting potential in Anduo area of Qinghai-Tibet plateau

根据“加厚旋涌”理论,通过对安多地区矿床(点)统计,圈出五个重要矿集区(菜园子沟、沱沱河、吴曼通洞、托吉涌及莫海拉哼矿集区),以螺旋运动(圆心、半径和速度按特定规律变化的三维以上的运动系统,是宇宙中普遍存在的运动方式)引发的“加厚旋涌”为指导,结合板块俯冲和碰撞理论,提出了安多地区有利成矿地质背景。安多地区地处青藏中央高原,中新生代印度板块的俯冲、碰撞引发下地壳加厚的基础上,造就了壳幔滑脱,地幔软流圈上涌,岩石部分熔融是地表隆升和伸展的主要动力,引发了“加厚旋涌”效应,即下地壳加厚深切上地幔软流圈,改变了软流圈运动方式,提供了成矿流体运移和沉淀空间,随着强烈的岩浆活动,在特提斯—喜玛拉雅完成了大规模成矿作用,控制主要的矿床(点)分布,具大型—超大型矿床成矿远景,提出建立整装勘查区,使其早日成为国内重要矿业开发基地。

The Anduo region is located in the central Tibet plateau.Because of helical motion triggered(center,radius and speed changes according to certain rules of 3D motion system,more than is common in the universe of motion)of"thickening vortex"as a guide,combined with plate subduction and collision theory,put forward the Anduo region favorable metallogenic geological background.Anduo region is located in the central plateau,in the new generation of Indian plate subduction,collision caused lower crust thickening,on the basis of creating the crust-mantle detachment,the mantle asthenosphere rose,and the melting of the rock was the main motive force of surface uplift and extension which triggered the“thickening vortex”effect,that is,the lower crust thickens and cuts the upper mantle asthenosphere,which changed the movement mode of the asthenosphere.With the intense magmatic activity and the corresponding metallogenic geological background,it provided ore-forming fluids,migration and sedimentation spaces had completed large-scale mineralization in Tethys-Himalayan.According to the statistics of ore deposits(spots)in the area,combined with the analysis of metallogenic geological background,five important ore-concentrating areas(Caiyuanzigou,Tuotuohe,Wumantongdong,Tuojiyong,and Mohailaheng)had been circled to control the distribution of major deposits(spots)and had a large-to-large deposit prospect for mineralization.So as to establish the integrated exploration area and make it an important mining development base in China as soon as possible.