自下而上由浅湖相、三角洲相和曲流河相组成。
From bottom to top, it consists of shallow lacustrine facies, delta facies and meandering river facies.
而在环河华池组主要沉积了湖相、三角洲相、曲流河相及风成砂岩夹层。
Major sedimentary facies in the Huanhe-Huachi Formation include lacustrine facies, delta facies, meandering fluvial facies, and interbedded eolian sandstone facies.
渤海湾盆地上第三系发育着大量的曲流河相沉积砂体，它们在中国东部的油气储量和产量中占据着重要的地位。
There exist a lot of Neogene meander sand bodies in Bohai Sea basin, and they give an important share of hydrocarbon reserves (or production ) in the east part of China.
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