摘要
拉鸡山构造带东西长逾650km,展布于由元古字组成的结晶地块内部,是一条早古生代火山岩极为发育的构造带。长期以来众多学者对拉鸡山进行大地构造学、岩石学研究。作者曾在拉鸡山从事多年野外调查工作,研究认为该地区无论在区域地质学、岩石学、构造变形学还是在大地构造演化方面其早古生代构造演化史皆具典型的裂谷带特征。晚古生代以来,经历了陆内多阶段造山过程,而为后期多阶段抬升的构造窗观点值得商榷。
The Lajishan tectonic zone, 650 km long from west to east and occurring within a crystalline landmass consisting of Proterozoic strata, is an active tectonic zone with early Paleozoic volcanic rocks abundantly developed in it. Based on many years' field investigation in the area, it is considered that the early Paleozoic evolution history of the area bears typical characteristics of rift belt, which are revealed by researches of not only regional geology, petrology and structural deformation, but also geotectonic evolution. Since the late Paleozoic, intracontonental orogeny has taken place. However, it is an open question that the tectonic belt belongs to the tectonic window of subsequent multistage elevation.
出处
《地质论评》
CAS
CSCD
北大核心
2001年第6期561-566,共6页
Geological Review
关键词
大地构造演化
再生洋盆
裂谷
构造窗
拉鸡山
青海
古生代
geotectonic evolution
regenerated oceanic basin
rift
tectonic window
Lajishan Mountains
