The Lower Jurassic consists of 2 sequences which include fan delta, semi deep lake and deep lake facies.
其中，下侏罗统可划分为两个层序，沉积相均以扇三角洲与半深湖—深湖相为特征；
Near shore turbidite fan and typical turbidite rock are deposited on well developed deep lake facies sediments in this area.
本区深湖相沉积十分发育，并在此背景上沉积了近岸浊积扇和典型的浊积岩。
The near-source slop area of deep and semi-deep lake facies is the most favorable accumulation area of abnormally high pressure oil-gas pools.
深—半深湖相的近物源斜坡区为最有利的高压油气藏富集区。
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