中文摘要：

位于河北、山西两省桑干河、壶流河流域的泥河湾盆地内发育一套中外驰名的晚新生代地层，内含丰富的哺乳动物化石和古人类文化遗迹。岩石地层的划分是区域地质研究的基础，为了加深对这套地层的认识，2013年中国地质科学院地质研究所在泥河湾盆地东部化稍营郝家台打了一钻，钻孔座标：N：40°13’0．4″，E：114°38’32．3″，H：938m。据365．82m厚的钻孔岩心岩石地层分析，自上至下划分为6个组：（1）上更新统马兰组，厚9．64rfl，以风积成因为主的黄土堆积，与下伏地层有沉积间断；（2）上更新统郝家台组，厚23．46nl，属滨、浅湖相沉积；（3）中-下更新统小渡口组，厚36．08m，属三角洲-滨湖相沉积；（4）下更新统泥河湾组，厚87．92m，属滨、浅湖相沉积；（5）上新统稻地组，厚111．78m，属湖沼相沉积；（6）上新统壶流河组，厚73．02m，属洪泛平原相沉积。孔深341．90～365．82m由白垩纪地层组成（未见底）。此剖面厚度大，连续性好，钻井采取率近100％，岩心在野外按钻井进尺依次进行连续描述，分辨率高，经研究认为泥河湾盆地第四系不仅在泥河湾盆地内可对比，并与黄土高原第四系也有一定的可对比性，即郝家台组与萨拉乌苏组对比，小渡口组与离石黄土对比，泥河湾组与午城黄土对比。本剖面可作为华北地区河湖相地层层型剖面之一。

英文摘要：

Nihewan Basin is situated in Sangan and Huliu river watershed, Hebei and Shanxi Province. It is well-known for its well-developed late Cenozoic strata and rich mammalian faunas and Paleolithic sites. Lithostratigraphic division of strata is critical for investigating region geology. In order to deeply know the stratum, a 365.82 m long core （N： 40°13＇0.4″, E： 114°38＇32.3″, H： 938 m） was obtained by us at Haotjiatai in 2013, which is located in Huashaoyin town, eastern of Nihewan Basin. Based on the analyzing of lithostratigraphy, this long core could be divided into six formations downward. 1, Upper Pleistocene Malan Formation （9.64 m thick）, which is eolian loess and shows depositional hiatus between it and underlying strata; 2, Upper Pleistocene Haojiatai Formation （23.46 m thick）, which is shore-shallow lacustrine sediment; 3, middle-lower Pleistocene Xiaodukou Formation （36.08 m thick）, which is delta to lakeshore sediment; 4, lower Pleistocene Nihewan Formation （87.92 m thick）, which is shore-shallow lacustrine sediment; 5, Pliocene Daodi Formation （111.78 m thick）, which is lake-marsh sediment; 6, Pliocene Huliuhe Formation （73.02 m thick）, which is floodplain sediment. The strata in depth of 341.90--365.82 m is Cretaceous, whose bottom is undiscovered. The section is characterized by large thickness, good continuity and 100% coring rate. In the field, through checking depth against the drill footage the borehole was described and sampled in good continuity and high resolution. Our study show that, Nihewan stratum could not only correlate in the basin on Quaternary, but also with Loess Plateau, such as Haojiatai Formation with Salawusu Formation, Xiaodikou Formation with Lishi Loess and Nihewan Formation with Wucheng Loess. This profile could be used as one of stratotype about fluvio-lacustrine strata in North China region.