盆地构造活动和火山作用可以促进干酪根的成烃转化。
Tectonic activities and volcanism in the basin have an influence on hydrocarbon generation of kerogen and its change.
辽西四合屯地区中生代火山活动发育，广泛分布着火山作用形成的爆发相、溢流相火山岩。
Volcanic eruption facies and flooding facies are extensively developed in the Sihetun area, west Liaoning.
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