板峪口—上寨地区韧性剪切带的发现及其地质意义  

The Discovery and Geoloicai Significance of Bangukiou—Shangzhai Ductile Shear Belt

作　　者：谷永昌[1] 张志飞[1] 张洁 

机构地区：[1]河北省地矿局地质研究所

出　　处：《河北地质学院学报》1993年第5期492-499,共8页

摘　　要：板峪口—上寨地区位于太行山中段阜平穹褶束与五台山—恒山花岗绿岩带汇合部位。该区发育两期韧性剪切带,第一期为拆离—滑脱型韧性剪切带;第二期为逆冲推覆型韧性剪切带。本文重点总结了韧性剪切带地质特征,并对其地质意义进行了讨论。认为原五台群为由一系列韧性剪切带分割的构造岩片叠置体。板峪口组和五台群金刚库组中的部分中深变质片麻岩为“外来岩片。”原五台山群与阜平群为由韧性剪切带接触。并总结了韧性剪切带对金矿的成矿、控矿规律。Banyukou—Shangzhi area is located at the convergent part of Fuping quaquversal fold cluster and Wutaishan—Henshan granite-greenstone belt,middle part of the Tainangshan mountains.Two period of ductile shear belts are well developed in the area.One is the detachement—glide ductile shear belt.the another is the uptrust—nappc ductile shear belt.This paper mainly discusses the geology and signicance of the ductile shear belts.It is considered that the Wutai Group consists of multipile structural rock flakes which are seperated by a series of ductile shear belts.Some mid—to high— metamorphic gneiss in Banyukou Formation and Jinggangku Formation are“guest rock flakes”.There is a ductile shear belt between Wutai Group and Fuping Group.The paper also summarizes the gold mineralization character of the ductile shear belts.

关 键 词：剪切带 地质意义 板峪口 逆冲推覆 

分 类 号：P542.2[天文地球—构造地质学]