shallow bar 浅滩
The clastic rocks of investigative area mainly developed in shoreside and shallow lake. The microfacies mainly included beach and bar.
研究层段主要发育于滨浅湖亚环境，形成的微相以滩坝微相为主。
The sedimentary environment of the 2nd member of the Xujiahe Fomation is shore-shallow lacustrine. The reservoir sand is beach bar.
合川地区须二段处于滨浅湖亚相环境，滨浅湖滩坝砂体是该区主要的储集砂体。
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