E2S3 is mainly the interbeds of gray-grayish white conglomeratic sandstone and brown-dark gray mudstone in different thickness and with relatively poor reservoir properties.

沙三段主要为灰色-灰白色含砾砂岩与灰褐色-深灰色泥岩不等厚互层，储层物性较差。

youdao

Bones and beaks and claws were folded in red and brown sandstone, as in a bas-relief.

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The baked brown cliffs and the clear blue sky were joined by the tinge of green on the sandstone rocks for the first time, in my memory.

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