In lamina of shale which deposited in deep lake away from paleo-debouchment in the Shahejie Formation in the Jiyang Depression, some aeolian silty sand was discovered.
该油页岩呈深或棕褐
,页理发育 ,主要由富含有机质纹层和浅
质纹层
成的毫
积层偶组成。
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