不同层次的构造变形与金矿

TECTONIC DEFORMATION OF DIFFERENT LEVELS AND GOLD DEPOSITS

构造层次是指在一定温度、压力条件下，由一定方式的构造力作用在岩石或岩石组合中形成一套特定的构造形迹群，不同类型、样式及组成的构造形迹群代表了不同温度、压力条件下构造变形产物。与此相应又有深部、中部及浅部层次的划分，以及居于其间的多个过渡类型。不同层次构造变形的代表性物质组成是变晶糜棱岩带 （构造片麻岩带）、糜棱岩带、构造片岩带和碎裂岩带等。据此提出深层次构造变形与变晶糜棱岩型金矿有关， 中、深层次构造变形与糜棱岩型金矿 （化） 有关， 中浅层次构造变形与含金剪切带型金矿有关，浅、表层次构造变形与破碎带细脉浸染型金矿 （化）

The term of structural level refers to a specific group of structural features that are formed under certain temperature and pressure condition, by the action of tectonic stress on rocks or rock series. The different types, styles of structural groups represent the results of tectonic deformation under different temperature and pressure conditions. According to the definition, several structural levels can be identified, i.e. hypozonal, mesozonal, epizonal and the transitional ones. Blastomylonite (tectono gneiss), mylonite, tectono schist and cataclastic rock etc. are the typical tectonites for different structural levels. Therefore, several types of gold deposits are proposed, i.e. blastomylonite type related to hypozonal structural deformation, mylonite type related to meso hypozonal deformation, gold bearing shear zone type related to epi mesozonal deformation, and fracture zone type network disseminated gold deposits associated with surface epizonal deformation.