区内下古生界烃源岩经历了两次成油过程，第一次发生在加里东运动前的盆地沉降阶段，第二次发生在加里东运动后晚古生代陆表海沉积阶段。
The first was in the basin subsidence stage that was prior to the Caledonian movement. The second took place in the marginal sea deposition stage after the Caledonian movement.
统一陆壳也是显生宙以来逐步形成的：主要经历了加里东和华里西-印支两大构造阶段。
The Qinghai crust was gradually collaged during the Paleozoic and mainly underwent Caledonian and Hercynian-Indosinian tectonic events.
统一陆壳也是显生宙以来逐步形成的：主要经历了加里东和华里西-印支两大构造阶段。
The Qinghai crust was gradually collaged during the Paleozoic and mainly underwent Caledonian and Hercynian-Indosinian tectonic events.
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