The facies includes alluvial fan, fan - delta, offshore lake, shallow lake and deep lake facies.
沉积相类型包括:冲积扇相 、 扇三角洲相 、 滨湖相 、 浅湖相、深湖相.
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The sediments are mudstone , shale, carbonaceous mudstone and marl of deep and semi - deep lake facies.
烃源岩已进入成熟阶段, 处于生油高峰期.
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