根据不同地层系统、沉积古地理、古生物地理区系、岩浆旋回等特征，可将苏门答腊岛划分为2类异地地体：东苏门答腊地体（亲冈瓦纳地体）和西苏门答腊地体（亲华夏地体）。2个不同地体的古地理演化和板块构造运动规律控制了区域金属矿床分布。海西期—印支期金属矿床的形成和分布受控于大陆边缘的火山弧，而燕山期则和裂谷岩浆侵入活动和海底扩张（或地幔隆起）有关。新生代金—银金属矿床沿苏门答腊—巴厘散大断裂两侧成带分布，受控于陆缘火山弧的岩浆活动。%According to different stratigraphic systems, sedimentological palaeography, palaeo-biogeographic province system and magmatic cycles, the Sumatra Island can tectonically be divided into two types of foreign terrain:East Sumatra Terrain(Gondwana af⁃finity)and West Sumatra Terrain(Cathaysia affinity). The regularities of paleographic evolution and plate tectonic movement of the two different types of terrain control the regional distribution of metallic stratabound deposits. The magmatic intrusion at the conti⁃nental vocanic arc controls the formation and distribution of Hercynian-Indonsinian metal-ore deposits ,whereas Yanshanian metal⁃lic deposits are related to the rifting magmatic intrusion or deep sea extension(mantle bulge). The Cenozoic Au-Ag metallic deposits are distributed along the huge Sumatra-Barisan fault and controlled by the magmatic activity at the continental volcanic arc.
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