低植被覆盖区斑岩铜矿遥感找矿模型及其应用——以环巴尔喀什-西准噶尔成矿带为例  

Remote Sensing Porphyry Copper Deposit Exploration Model and Its Application in Low Vegetated Areas:An Example from the Taken Balkhash-Western Junggar Metallogenic Zones

作　　者：王钦军[1] 魏永明[1] 陈玉[1] 蔺启忠[1] 周红英[2] 

机构地区：[1]中国科学院遥感与数字地球研究所中科院数字地球重点实验室,北京100094 [2]中国石油勘探开发研究院,北京100083

出　　处：《地质学报》2017年第2期400-410,共11页Acta Geologica Sinica

基　　金：国家自然科学基金项目(编号41171280);中国科学院"西部之光人才培养计划"项目;国家科技支撑计划项目(编号2012BAH27B05)联合资助的成果

摘　　要：针对遥感找矿过程中所面临的干扰因素多、地表覆盖类型多样导致的遥感找矿困难的问题,提出了低植被覆盖区斑岩铜矿"小型侵入岩体异常+线性构造异常+蚀变矿物异常"的多尺度遥感找矿模型,并系统总结了该模型的基本原理和技术流程。以环巴尔喀什-西准噶尔成矿带为研究区,分析了研究区的成矿地质背景;在遥感找矿模型的指导下,依据遥感找矿技术流程提取了研究区的岩性、构造和蚀变矿物等控矿要素;结合野外地表验证情况,综合多源数据,圈定了5处重点远景区;结合大比例尺遥感蚀变矿物填图、地质、地球物理、地球化学和探槽取样的分析结果,圈定3处遥感找矿靶区。A multi-scale remote sensing porphyry copper deposit exploration model in low vegetation covered area named ＂abnormal little intrusive rocks ＋ structures ＋ altered minerals＂ was proposed to solve the difficulties in mineral exploration caused by multiple interfering factors.The geological background of mineralization was analyzed taken the Balkhash-Western Junggar metallogenic zones as the study area.Lithology,structures and altered minerals were analyzed according to the flow chart of remote sensing mineral exploration.Based on the results,five important prospective areas have been prospected.Among them,three target regions were delineated using large scale altered mineral map,geological map,geophysical map,geochemistry map and the results of the trench sampling.

关 键 词：遥感找矿 模型 环巴尔喀什-西准噶尔 成矿带 

分 类 号：P627[天文地球—地质矿产勘探]