新疆阿舍勒矿集区深部构造反射地震成像应用研究  

Research on the Application of Seismic Imaging of Deep Tectonic Reflection in Ashele Ore Concentration Area,Xinjiang

作　　者：孔繁良[1,2] 陈海军 刘正荣[1] 雷建华[1] 徐超[1] Kong Fanliang;Chen Haijun;Liu Zhengrong;Lei Jianhua;Xu Chao(Geophysical and Geochemical prospecting group of Xinjiang bureau of geology and mineral resources Exploration and Development,Changji,Xinjiang,831100,China;School of Geophysics and Information Technology,China University of Geosciences(Beijing),Beijing,100083,China)

机构地区：[1]新疆维吾尔自治区地质矿产勘查开发局地球物理化学探矿大队,新疆昌吉831100 [2]中国地质大学(北京)地球物理与信息技术学院,北京100083

出　　处：《新疆地质》2021年第4期594-599,共6页Xinjiang Geology

基　　金：国家重点研发计划天山-阿尔泰增生造山带大宗矿产资源基地深部探测技术示范项目(2018YFC0604000)资助。

摘　　要：阿舍勒铜锌矿是我国典型的海相火山岩块状硫化物(VMS)型矿床。为揭示阿舍勒矿集区深部地质结构,查明构造单元边界、基底特征,提取深部找矿信息,在阿舍勒矿集区实施了两条反射地震剖面,通过采集试验攻关确定合理采集参数,处理中突出精细静校正、噪声衰减、子波处理、速度分析、偏移成像等方法技术,获得高信噪比时间剖面。剖面偏移成像成果精细刻画阿舍勒矿集区地层构造分布格局,反映出横向挤压应力背景。深部地震波组的发现为阿尔泰造山带南缘发育有前寒武纪结晶基底提供了新证据。The Ashele copper-zinc deposit is a typical marine volcanic massive sulfide(VMS)deposit in China.In order to reveal the deep geological structure of the Ashele ore concentration area,ascertain the structural unit boundary and basement characteristics,and extract the deep prospecting information,two seismic reflection profiles were implemented in the Ashele ore concentration area,and it was determined to be reasonable through method tests.In the processing,methods and techniques such as fine static correction,noise attenuation,wavelet processing,velocity analysis,and migration imaging are highlighted,which obtain a time profile with higher signal noise.The profile migration imaging results portray the structure distribution pattern of the Asele ore concentration area and its lower periphery,reflecting the background of lateral compression stress.The existence of the deep seismic wave group means that there is a Precambrian crystalline basement on the southern edge of the Altai orogenic belt Provided new evidence.

关 键 词：阿舍勒矿集区 金属矿反射地震 深部构造 偏移成像 

分 类 号：P631.425[天文地球—地质矿产勘探]