51. The cower unit of the Eagle is a wellsorted lithic and glauconitic marine sandstone.

伊格尔砂岩下部单元是分选岩屑质和海海质。

Glauconite, detrital carbonate skeletal debris, marine fossils, and collophane are commonly present.

海、酸盐骨骸碎屑、海化和胶磷矿普遍出现。

The Glauconite Sandstone is a persistent stratigraphic unit.

海砂岩是一个稳定地层单元。