豫西祁雨沟矿田金矿化类型、特征及成因

祁雨沟矿田内金矿床类型有爆破角砾岩型和构造蚀变岩型,表现为"多型一体"的产出特征。通过对两种类型金矿床的研究认为,受拆离断层控制的爆破角砾岩筒和陡倾斜断层,控制着金矿床的形成和分布,并分别形成爆破角砾岩型金矿床和构造蚀变岩型金矿床;燕山晚期,在伸展作用背景下,地壳深处重熔性花岗岩浆沿构造薄弱带上侵并演化,先后形成爆破角砾岩型金矿床和构造蚀变岩型金矿床。

Types and geological characteristics and genesis of gold deposits in Qiyugou, Henan

The gold deposit types in Qiyugou orefield include breccia-type and tectonic-altered rock type gold deposit, characterized by the occurrence of ＂multi-type in one＂. Based on the study on two kinds of deposits, the following achievements and conclusions are made. the steep inclined fault and explosive breccia pipe are controlled by the detachment fault, controlling the formation and distribution of gold deposits, and breccia- type gold deposits in explosive breccia pipe and tectonic-altered rock type gold deposit in the steep inclined fault were formed; on the background of regional extension of late Yanshanian, the melting of granite from the deep crust intrusion and evolution along the weak tectonic belt, has first formed breccia-type gold deposit and then tectonic-altered rock type gold deposit.