Shanxi Formation is a set of paralic continental deposit,of which,fluvial,swamp and lacustrine facies alternatively presented regularly.

山西组为一套近海型的陆相沉积,其中河流相、沼泽相及湖泊相有规律地交替出现。

But the reservoirs of coastwise bar, lacustrine bay sandstone and shore sand occur in each tract.

而沿岸坝、滩砂、湖湾砂等油气于个。

We propose that As anomalism in groundwater possibly resulted from the combined effects of organic matter-enriched lacustrine sediments, geological setting and topographical characteristics.

通过研究，可以看出以还原环境为主的富含有机质的湖沼相沉积环境、特定的地质、地形条件为地下水砷异常的原因。

Relative higher concentration of gammacerane in Songliao fresh-brackish lacustrine environment is connected with water column stratification caused by event of linking between lacustrine and sea.

松辽盆地淡水-微咸水环境较高含量的伽马蜡烷表明其形成与湖海沟通引起的水层事件有关。