It is the later Mesozoic that formed a clear structural thermal event, and resulted in the course of later Jurassic and early Cretaceous, whose gas generation rate is over 0.2 108m3/km2- Ma.

• 盆地晚中生代存在一次明显的构造热事件，导致上古生界天然气的生成表现为一个相对集中的事件，主要在晚侏罗世至早白垩世末期完成，该期生气速率达到0.；2×10~8m~3/km~2·Ma以上；