The Beier depression, which is located in the Hailaer basin, is a Cretaceous faulted depression with terrestrial sediments.

海拉尔盆地贝尔凹陷是一个以白垩系沉积为主的陆相断陷区。

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Abstract: As the transition zone between terrestrial and Marine environment, carbonate platform sediments record information both from ocean and land.

摘要：碳酸盐岩台地作为陆地与深海间的过渡带，其沉积记录了海洋和邻近陆地的演化。

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Nearshore shallow water environment, abundant terrestrial fine detritus, local reduction facies and zones are three cardinal conditions for the formation of uranium-rich sediments.

近岸的浅水条件，丰富的陆源细碎屑，局部的还原相带，是形成富铀沉积物的三个基本条件。

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