第四纪地层 meaning in English

quaternary strata

The strata and environmental evolution in the late quaternary in the chengdao area and modern yellow river delt coast
埕岛及现代黄河三角洲海域晚第四纪地层与环境演变
The dalinghe hidden fault , as an example in this paper , is just located under the dalinghe river , so the activity of this hidden fault can be defined by comparing quaternary layers and terraces beside the river hidden fault . based on spore analysis of 17 layers and several
以大凌河隐伏断裂为实例，根据断裂位于大凌河床底部的特点，通过对比河流断裂两侧的第四纪地层和阶地，对隐伏断裂的活动性进行研究。孢粉分析和