鄂东南铜绿山矿田构造特征及其控矿规律

铜绿山矿田位于鄂东南三角形构造岩浆区的中心,区内断裂构造发育,自浅至深形成网络系统,造成岩浆、成矿活动具长期演化的过程,这种优越的地质环境造就了矿田在鄂东南地区成矿中心的地位。控制矿田内矿床体的分布主要是北北东向构造与北西西—近东西向构造,两个方向的构造各自形成矿化带,而在两个方向的交切点就是矿床体的赋存部位。因而在平面上矿床体呈网格分布的格局。在空间中矿床体分布于岩体的周缘、顶盖及岩体中的残留体、捕掳体中。控制矿体的构造主要是北北东向叠加背斜的核部、北北东向断裂及其旁侧的羽状裂隙、北西西向的断裂接触带以及滑体平卧背斜的核部。

Structural Characteristics and Ore Controlling Law of Tonglushan Orefield in Southeastern Hubei

Tonglushan orefield is located in the center of triangular tectonic-magma areas in southeastern Hubei.The fault structure develops well,network systems form from shallow to deep,resulting in magma and mineralization activities with long-term evolutionary process.Excellent geological environment makes the orefield place in the center of mineralization in southeastern Hubei.The distribution of deposits(orebodies) in the orefield is mainly NNE structure and WNW-near EW structure.Thus deposits(orebodies) in the plane are consistent with mesh distribution.Deposits(orebodies) in the space are distributed in residual body or xenoliths of rock mass and periphery of rock mass.The structures of the control of ore body are NNE-trending core superimposed anticline,NNE-trending faults and their flank plume-like fracture,WNW fault contact zone and the sliding body supine anticline core.