摘要
为了追索朝鲜北部惠山—利原成矿带是否延入玄武岩覆盖下的中国长白山地区，采用航空彩色红外像片和经过处理的ＴＭ数据，解译惠山—长白县一带的构造、岩性展布和蚀变现象。发现控制惠山—利原成矿带的构造（地层已延入我国长白县，但为玄武岩覆盖。采用ＴＭ５／ＴＭ７，ＴＭ４／ＴＭ３，ＴＭ３／ＴＭ４比值合成图像，压抑了植被干扰，突出了粘土类矿物蚀变岩信息。结合重力、航磁资料分析，推断沿江村—万宝岗及马鹿沟以北一带存在隐伏斑岩体，确定此二处为找矿靶区。通过地面地质验证及物化探普查工作，在沿江村一带，获得了良好的找矿效果，发现了大量辉绿玢岩、低温热液蚀变岩石和铜化探异常，并于马鹿沟以北，圈定出３ｋｍ３金异常区。
Abstract In order to trace whether the Huishan-Liyuan metallogenic, belt of north Korea into Changbai mountains region of China covered with basalt or not,the airborne colored infrared image and process TM data were used in interpreting the structure, distribution and alteration of rocks in Huishan-Changbai county region. The result permits us to find that the structure and stratigraphy controlling the Huishan-Liyuan metallogenic belt extends beneath the basalts in Changbai county. The compote images of TM5/TM7, TM4/TM3 and TM3/TM4 ratios are used in suppressing the disturbance of vegetation and protruding the altered rocks information containing clay minerals. In connection with gravity and aeromagnetic data, we infered the existence of hidden porphyre in Yanjiangcun-Wanbaogang zone and in zone north of Malugou, and determined these two zone to be the target areas for prospecting ore deposits.The field examination, geophysical and geochemical surveys in the Yanjiancun zone provides a good ore finding result. It permits us to find diabase-porpyrite, low temperature hydrothermal alteration rocks and Cu geochemical anomaly, and limn a gold anomaly area about 3km2 in north of Malugou.
出处
《国土资源遥感》
CSCD
1994年第1期7-14,共8页
Remote Sensing for Land & Resources
