【摘要】 本文讨论了北方造山带东北段满洲里─额尔古纳地区及其毗邻区中生代构造─流体─成岩成矿系统及其演化的三个不同阶段： 1）早中侏罗世张性“似裂谷环境”下所形成的中基性碱性火山岩、同熔性花岗岩及深源流体活动形成的稀土矿床和斑岩性铜钼矿床； 2）晚侏罗世挤压─剪切环境下所形成的酸性火山岩、斑岩类及深源流体活动所形成的铅锌银矿床； 3）早白垩世张性环境下所形成的基性碱性火山岩及深源流体活动所形成的铀矿床、金银矿床及萤石矿床。在此基础上，建立了区域中生代构造─流体─成岩成矿地球化学一体化系统模型。更多还原

【Abstract】 There is a close relation between Mesozoic tectonic evolution,fluid evolution,petrogenesis and mineralization in the Manzhouli－E’ erguna region in the northeast of the Northern Orogenic Belt,China， and three evolution stages of the Mesozoic tectonic－fluid－petrogenetic and metallogenetic system are proposed out:1) Acompanied by REE and Cu mineralization,the calc－alkaline volcanic rocks and mantle－crust mixed type granite occurred under the regional tension tectonic background caused by the Mongolia－Okhotsk residual ocean that was closing in scissors form in the Early－Middle Jurassic.2)Acompanied by Pb,Zn and Ag mineralization,the calc－alkaline and alkaline volcanic rocks occurred under the regional shear－compression tectonic background in the Late Jurassic.3) Acompanied by U,F,Pb,Zn and Ag mineralization,the calc－alkaline and alkaline volcanic rocks occurred under the regional tension tectonic background in the Early Cretaceous.The Mesozoic magmatism and polymetallic mineralization was caused by interaction between deep－derived fluids and Mesozoic multistage tectonic activities.更多还原