鲁东碰撞带的初步研究

PKELIMINARY STUDY ON THE EASTERN SHANDONG COLLISION ZONE

摘要:

鲁东碰撞带是秦岭一大别碰撞带的东延部分，它由元古字变质地层混杂堆积体、花岗质片麻岩、榴辉岩、超镁铁质岩、镁铁质岩、麻粒岩及韧性剪切带组成。碰担带内存在一对平行展布的高压变质带－内部为榴辉岩带，边部为麻粒岩带。碰撞带形成于８．５亿年左右，３．２－３．５Ｍａ和２．０５－２．１３Ｍａ分别发生强烈活动，形成大规模推覆构造和走滑性韧性剪切构造。

Abstract:

The eastern Shandong collision zone is an castern extension of the Qinling-Dabie cullisionzone between the Sino-Korcan and Yangtze cratons,which consists of the Proterozoicmetamorphic melange accumulation,granitic gneisses,eclogites,ultramafic rocks,mafic rocks,granulites and ductile-shear zones,There is a pair of parallel high-pressure meta-morphicbelts with in the collision zone in which the eclogite belt is distributed inside the zone and thegranulite belt on the margin. The collision zone was formed at...