河北怀来地区ZK02孔第四系地层结构特征

研究第四系地层结构特征和沉积环境，不仅对掌握区域第四纪发展史和气候变化具有重要意义，还可为合理利用地质资源和防治地质灾害提供重要依据。以怀来地区ZK02孔揭露的地层特征为依据，分析第四系地质结构，探讨怀来地区第四系特殊的沉积环境演变。结果表明：海拔600 m以上的山间河流发育了较厚的第四系中、上更新统沉积物，且研究区第四系自下而上以河床-边滩相沉积环境为特征，表明新构造运动和气候变化控制了第四纪时期的沉积环境演变，特殊的地质环境塑造了特殊的第四系地层结构特征。

Quaternary strata structure characteristics of the drilling hole ZK02 in Huailai region, Hebei Province

The study of Quaternary structural characteristics and sedimentary environment is not only of great significance to grasp the Quaternary development history and climate change of the region, but also provides an important basis for the rational use of geological resources and the prevention and control of geological disasters. Based on the stratigraphic features revealed by the drilling hole ZK02 in Huailai region, the Quaternary geological structure was analyzed, and the evolution of the special sedimentary environment of the Quaternary in Huailai was discussed. The results shows that the intermontane rivers over 600 m elevation develop thick Middle and Upper Pleistocene sediments, and the Quaternary of Huailai region is characterized by the riverbed-point bar facies from the bottom up, revealing that the new tectonic movement and climate change in the study area controlled the evolution of sedimentary environment in Quaternary. The special geological environment shapes the special strata features of the Quaternary.