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.
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释义
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。
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