It is inferred that North Qilian orogenic belt was located in the tectonic background of an archipelagic ocean where a wide multi-island ocean existed in the Ordovician.
英
美
- 推测北祁连奥陶纪处于多岛洋的构造背景,北祁连奥陶纪存在宽阔、多岛的古洋盆。