A sand or sediment having a dark greenish color caused by the presence of glauconite .
海绿石砂因含有海绿石而呈深绿色的砂子或沉积物。
Glauconite , detrital carbonate skeletal debris , marine fossils , and collophane are commonly present .
海绿石、碳酸盐骨骸碎屑、海相化石和胶磷矿普遍出现。
Based on the analysis of biology fossils , it is considered that zhan-che sag of jiyang depression was ever invaded by the small-scale marine transgression under the background of the continental basin , which influenced sedimentary environment at that time , and occurred biologic variation and glauconite deposit to a certain extent .
