Volcanic edifice is divided into three facies belts which are crater-near crater facies (CNCF), proximal facies (PF) and distal facies (DF).

将火山机构分为火山口-近火山口相(CNCF)、近源相(PF)和远源相(df)三个相带。

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Relationship between sedimentary facies and hydrocarbon distribution shows that most favorable oil and gas accumulation zones occur in the mouth bar, distal bar and sand sheet.

该区沉积相与油气分布关系分析表明，河口坝、远砂坝和席状砂微相是最有利的油气聚集带。

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