马朗凹陷是三塘湖盆地的一个二级构造带，侏罗系是盆地内主要含油层位。
Malang Depression is a secondary structural belt of Santanghu basin, Jurassic Series is the main oil and gas reservoir of the basin.
西部斜坡是松辽盆地北部的一个二级构造单元，区内共有探井260 多口。
Western-slop is a secondary structure unit of northern Songliao basin, and there are more than 260 wells in this area.
该凹陷分为5个二级构造带，沉积地层以第三系为主，主要烃源岩为始新统平湖组煤系。
The sag can be divided into 5 secondary tectonic belts, the main sedimentary formation is Tertiary and the main source rock is Pinghu coal measures of Eocene.
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