武当-桐柏-大别成矿带铜矿成矿规律

武当-桐柏-大别成矿带可分为南秦岭造山带、北淮阳构造带、桐柏-大别构造带三个二级构造单元，在南秦岭造山带广泛分布变质热液型铜矿，北淮阳构造带内产出VMS型、岩浆熔离型及斑岩型铜矿，桐柏-大别构造带则分布有岩浆热液型和矽卡岩型铜矿。构造单元的性质对区内产出的铜矿类型具有较强的控制作用。变质热液型铜矿主要与浅变质作用有关，变质流体以断层为运移通道并最终就位于黑色岩系内的次级断层。VMS型、岩浆熔离型、斑岩型铜矿与岩浆作用密切相关，产出在岩体内部及与围岩的接触带。岩浆热液型及矽卡岩型铜矿形成于岩浆作用晚期阶段，分布在岩体与围岩接触带及附近构造裂隙带等部位。

Metallogenic laws of copper deposits in the Wudang- Tongbai-Dabie metallogenic belt

The Wudang-tongbai-dabie metallogenic belt can be divided into three secondary tectonic units, the south Qinling orogenic belt, north Huaiyang tectonic belt and Tongbai - Dabie tectonic belt. The south Qinling orogenic belt has a wide distribution of metamorphic hydrothermal type copper deposits; the north Huaiyang tectonic belt is abundant with VMS type, magmatic type and porphyry copper deposits; the Tongbai-Dabie tectonic belt has widely distributed magmatic hydrothermal type and skarn type copper deposits. These structure units exert a critical control on the types of copper deposits. The metamorphic hydrothermal type copper deposits are related to low-grade metamorphism, and the metamorphic fluids migrated along faults and finally occurred in the secondary fault within black rock series. The copper deposits of VMS type, magmatic type and porphyry are closely associated with magmatism, and occurred in the contact zone between interior rock mass and wall rocks. The magmatic hydrothermal type and skarn type copper deposits were usually formed in the late magmatism stage, and are distributed in the contact zone between rock masses and surrounding rocks, and the adjacent tectonic fracture belt.