CAJ | 학술논문

本文介绍位于印尼苏门答腊岛中部巴东地区辛卡拉克湖以东及其东南的狭长地带含矿火成岩的地球化学特征。应用岩浆岩地球化学作图软件处理了研究区内40多个含矿火山-侵入岩的岩石化学分析数据，展示其地球化学-构造环境判别图，目的在于解释其构造环境，并与邻近地区侵入-火山岩的构造环境进行对比。研究结果表明：大多数火山-侵入岩样品落在陆缘岛弧及陆缘火山弧和活动大陆边缘范围内。含矿火山凝灰质岩、凝灰质硅质岩和石英脉岩则远离海沟，比较接近大陆板内拉张带初始裂谷环境（弧后盆地）。新发现的埃达克质火山凝灰岩质页岩和埃达克质石英脉岩与区內的埃达克质花岗岩形成于活动大陆边缘。
본문개소위우인니소문답석도중부파동지구신잡랍극호이동급기동남적협장지대함광화성암적지구화학특정。응용암장암지구화학작도연건처리료연구구내40다개함광화산-침입암적암석화학분석수거，전시기지구화학-구조배경판별도，목적재우해석기구조배경，병여린근지구침입-화산암적구조배경진행대비。연구결과표명：대다수화산-침입암양품락재륙연도호급륙연화산호화활동대륙변연범위내。함광화산응회질암、응회질규질암화석영맥암칙원리해구，비교접근대륙판내랍장대초시렬곡배경（호후분지）。신발현적애체극질화산응회암질혈암화애체극질석영맥암여구내적애체극질화강암형성우활동대륙변연。
Based on the geochemical data of more than 40 samples in ore-bearing igneous (magrnatic) rocks whthin Padang area ,Sumatra (Indonesia) ,this paper plots and demostrate some of the geochemical-tectonic setting discrimination diagrams by using the geochemical software of igneous petrology ,in order to explain the tectonic environments of igneous rocks in this area ,also to compare them to volcanic tectonic environments in adjacent area in west Sumatra nearby .The result indicates that the volcanic-intrusive rocks formed in margin arc of continent or volcanic arc of continent and active continent margin ,whereas are ore-bearing tuff ,tuffaceous rocks and quartz gangues are formed in a tension zone or initial rift environment within-continental plate ( back-arc basin ) near trough .The new finding adakitic tuffaceous rocks and adakitic quartz gangues similar to adakitic granite are formed in arc of active continental margin .