大地构造与成矿(岛弧与活动大陆边缘)

1、外部隆起海沟坡折（又称构造隆起、构造弧、外弧脊）弧沟间隙（包括弧前盆地）岩浆弧（又称内弧、主弧、火山弧）活动边缘海盆地（又称弧间盆地）残余弧（又称死弧、第三弧）海沟一岛弧构造地形单元划分海沟一岛弧构造地形单元划分弧后盆地East facing continental margin亚州东部日本海东亚大陆West facing continent巴西和智利外部隆起海沟坡折（又称构造隆起、构造弧、外弧脊）岩浆弧（又称内弧、主弧、火山弧）n弧间盆地2）Mineral Deposits in outer arc早期早期中期中期晚期晚期3）Mineral deposits of Outer arc tro

2、ugh早期早期Interpretative geological sections through Nias and Sumatran continental Margin showing Neogene evolution早中新世presentYoung this sideFigure showing the formation process of anOuter arcIdeal model showing sediments subductionAnd subduction erosion沉积物俯冲底侵作用4）Mineral deposits of magmatic arcs4）Min

3、eral deposits of magmatic arcsKuroko depositBesshi deposits5）Deposit types in back-arc thrust beltWest facing continentinactiveactiveSchematic cross-section through the Andes near northern end of Bolivian tin beltTinSchematic cross-section through the Andes 早期阶段早期阶段晚期阶段晚期阶段Postmagmatic stageEarly Hy

4、drothermalLate HydrothermalThermal springspropyliticLevel of Cu deposit After erosionDiorite-related porphyry modelSchematic representation of the sequential filling stages ofthe gold-bearing, quartzsulfide veins at the Ge ant Dormantdeposit.Dialation zones含子矿物不含子矿物4、矿床成因1）成矿温度）成矿温度2）热液成分）热液成分始熔温度熔化

5、温度均一温度部分均一温度Fault valve stagesPlume subductionGenetical model for generating lithosphere-scale thermal anomalies and to drive orogen-scale hydrothermal systemsCrustal thickingOceanic ridge subductionSubduction rollbackErosion of mantle lithosphereDeclamation of mantle lithosphere（3）成矿时代）成矿时代Ore is commonly deposited as open