根据川黔地区海相上古生界未经蚀变的92个样品的锶同位素测试数据，建立了该地区晚古生代锶同位素组成曲线。
This paper sets up a curve of the strontium isotopic composition of the Late Paleozoic based on 92 unaltered marine carbonate samples collected from Sichuan and Guizhou.
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.
在对其进行的首轮油气勘探中发现了中生界大型油田，在二轮普查中对古生代的研究取得了突破和进展。
The large_scale oilfield of the Mesozoic has been found in the first cycle of exploration. In the second cycle, the study on the Paleozoic has achieved breakthrough and high_speed progress.
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