The oil and gas resources in basin and mountain system emerge from the activity period of basalt magma under the effect of the mantle fluids.

• 盆-山系油气的产生始于地幔流体作用下形成的玄武岩浆活动时期，集中于富含地幔流体的中地壳塑性层变厚、上拱的断隆山及其上覆盖层，如中国大陆东部中、新生代盆-山系。