CAJ | 학술논문

攀天阁火山弧是江达―维西陆缘火山弧的二级构造单元，近年通过大量的野外地质调查和综合研究，发现铁铜铅锌金银等多个矿点，并初步认为攀天阁火山弧的成矿环境与多岛弧盆及次一级多个封闭或半封闭，并属于弧间盆地的弧内坳陷洼地的古地理构造有关。且弧内可能存在一个局部拉张环境下形成的小海盆，海盆于晚三叠世晚期关闭，结束了攀天阁火山弧的弧盆成矿演化阶段。剐抓瓜断裂可能是小海盆关闭的产物。燕山-喜马拉雅期大规模、大范围的构造叠加，使该区又进入陆内构造转换成矿演化阶段，多岛弧盆的古地理格局与大范围、多期次的成矿构造事件叠加，使弧内沿剐抓瓜断裂一带成为主要的矿集区，并且区域物化探综合异常与矿集区矿点叠合较好，关联性强。综合认识这些特点对攀天阁火山弧的弧内找矿工作具有十分重要的意义。
반천각화산호시강체―유서륙연화산호적이급구조단원，근년통과대량적야외지질조사화종합연구，발현철동연자금은등다개광점，병초보인위반천각화산호적성광배경여다도호분급차일급다개봉폐혹반봉폐，병속우호간분지적호내요함와지적고지리구조유관。차호내가능존재일개국부랍장배경하형성적소해분，해분우만삼첩세만기관폐，결속료반천각화산호적호분성광연화계단。과조과단렬가능시소해분관폐적산물。연산-희마랍아기대규모、대범위적구조첩가，사해구우진입륙내구조전환성광연화계단，다도호분적고지리격국여대범위、다기차적성광구조사건첩가，사호내연과조과단렬일대성위주요적광집구，병차구역물화탐종합이상여광집구광점첩합교호，관련성강。종합인식저사특점대반천각화산호적호내조광공작구유십분중요적의의。
Pantiange volcanic arc is a secondary building unit of Jomda-Weixi continental margin volcanic arc. In recent years,on the basis of a large amount of field geological survey and comprehensive study,many mineral occurrences of iron,copper,lead,zinc,gold and silver are found.It is believed for now that the metallogenic setting of Pantiange volcanic arc is related to the tectono-paleogeographic framework of a multi-arc basin and its many secondary closed or half-closed intra-arc depressions which belongs to the inter-arc ba-sin.An ocean basin possibly exists within the arc which formed in the part of tension environment,and this remnant ocean basin closes in late Triassic epoch and it ends the metallogenic evolution of Pantiange volcanic arc.Guazhuagua fault is a possible product of ocean basin closure.The tectonic overprinting in Yanshanian-Himalayan period forces this area entering into the metallogenic evolution stage of intra-continental tectonic transition.The paleogeographic framework of multi-arc basin system and the superimposition of large-scale and multi-phase metallogenic-tectonic events make the Guazhuagua fault within the arc an important ore con-centration area.Moreover,the synthetic geophysical and geochemical prospecting anomalies perfectly over-lap the mineral occurrences in this ore concentration area.All the above-mentioned characteristics are of great significance to prospecting works in Pantiange volcanic arc.