半深海- 深海相区、 滨浅海相区和三角洲相区是较为有利的油气分布区。
The bathyal - abyssal facies , littoral facies , neritic facies and delta facies are beneficial to and gas exploration.
淮南煤田二叠系是以三角洲—滨岸平原相为主的沉积。
The Permian in Huainan coalfield is a set of deltaic coastal deposition.
主要沉积体系为河流、 三角洲、 冲积扇及滨浅湖相。
The main sedimentary system includes fluvial, delta, alluvial fan and lake facies.
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