摘要
晚元古—早古生代北秦岭以早元古宙秦岭群为中央隆链,其南北两侧对称地发育着两条裂陷槽。南裂陷槽沉积了以丹凤群(李子园群)为代表的火山-沉积岩系,北裂陷槽沉积了以斜峪关群(二郎坪群)为代表的火山-沉积岩系。本文主要讨论北裂陷槽的沉积变质作用及其构造演化。
Taking the Qinling Group as the central uplift, the two aulacogens were symmetrically growing in the north-sourth sides during the Upper proterozonic-Palaeozonic Era. The Danfeng Group was deposited in the sorth-aulacogen, and the Xieyuguan Group (Erlangping Group) in the north-aulacogen, which is called the volcanogene sedimentary rock series and represented the rock association in the north-aulacogen. The meta-morphism and tectonic evolution of these rock series are discussed in this paper.
出处
《地球科学与环境学报》
CAS
1993年第S1期1-9,共9页
Journal of Earth Sciences and Environment
关键词
北秦岭
晚元古—早古生代
裂陷槽
变质作用
构造演化
The Northern Qinling, Upper Proterozonic Subera -Paleozoic Era, Aulacogen, Metamorphism, Tectonic evolution
