Four isolate barrier beds occurened usually in boundary surface of each internal architecture unit in channel sandbody, i. e. find bed, muddy pebble bed, plant clasts bed and diagenic bed.
河道砂体内部构成的不同层次实体界面上，通常存
4
层，即细粒物质层、泥砾层、植物碎
层和成岩层。
Four isolate barrier beds occurened usually in boundary surface of each internal architecture unit in channel sandbody, i. e. find bed, muddy pebble bed, plant clasts bed and diagenic bed.
河道砂体内部构成的不同层次实体界面上，通常存4层，即细粒物质层、泥砾层、植物碎层和成岩层。
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