结合上述事实，通过沉积建造分析，该区在中石炭统曾存在沟弧盆体系。
The analysis of sedimentary formation suggests the existence of groove-arc-basin system at the middle Carboniferous.
早奥陶世北祁连地区再次拉张，遭受第二次大洋化，到中奥陶世形成具沟弧盆体系的成熟大洋。
In early Ordovician North Qilian region again stretched and suffered second oceanization, up to middle Ordovician a mature ocean basin with a trough-arc-basin system already formed.
依据地层组成结合岩石化学研究，在“构造混杂岩”基础上建立了“双列岛弧”的“沟弧盆体系”模式。
According to stratigraphic compositionand lithochemistry, a"trench-arc-basin system" model for the dual-arrangedisland arc is established on the basis of the "tectonic melange".
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