Nanpu depressionvolcanic rocks most beneficially reserviors develop in Beipu structural belt of Es3 period and Es1-3stage , secondly for the Nanpu No. 2 structural belt in Ng formation.
南堡凹陷火山岩最有利的勘探区带位于北堡构造带的沙3期和沙1-3期，其次为南堡2号构造带东营组。
2
Volcanic rock is well developed in south of east depression in Liaohe basin, and has the characteristics of thick and vast.
辽河盆地东部凹陷南部地区火山岩十分发育，具有厚度大、分布广的特点。
3
This has very important significance for the gas reservoir research of the Jurassic volcanic rocks in the Yingshan Fault Depression of the Songliao Basin.