摘要
本文报道了胶东—苏北古碰撞带附近存在的高温低压变质的麻粒岩相、高温高压变质的A—B类榴辉岩相和高压低温变质的C类榴辉岩相三种变质相系,以及与高温低压麻粒岩相有关的Ⅰ型花岗岩带,它们在空间上相协调,在时间上相一致。其经历了早元古代早期的华南—华北陆块碰撞事件、早元古代角闪岩相变质事件和早元古代末期大陆推覆构造事件,使得高温低压麻粒岩相岩石发生退变质作用,低温高压C类榴辉岩相岩石发生进变质作用,蓝闪石片岩消失,并导致高温高压的A—B类榴辉岩相和高压低温的C类榴辉岩相在空间上相叠置。
In this paper, we report the high-pressure and low-temperature metamorphic type C eclogitic face, high-temperature and high-pressure metamorphic type A-B eclogitic face, high-temperature and low-pressure metamorphic granulitic face, which all exist in the nearby regions of the Jiaodong-Subei fossil collision zone and the type Ⅰ granite zone accompany with high-temperature and low-pressure granulite face. In era they are unanimous and in space they are coordinate. In undergoing the collision event of the southern China plate with the northern China plate at the early Suberathem, the amphobole-face metamorphism event at the Suberathem and the continental napping event at the later Suberathem, retrometamorphism took place in the rocks of high-temperature and low-pressure granulite face, progressive metamorphism took place in high-pressure and low-temperature type C eclogite face, the glaucophane schist disappeared, and type A-B eclogites zone overlapped with type C eclogites zone in geological space.
出处
《海洋湖沼通报》
CSCD
北大核心
1992年第1期51-57,共7页
Transactions of Oceanology and Limnology
基金
青岛海洋大学学校基金
关键词
古碰撞带
榴辉岩
麻粒岩
变质作用
fossil collision zone
eclogite
granulite
metamorphism
