CAJ | 학술논문

通过对以往地层岩性、成因类型、结构、标志层、~(14)C、古地磁、钻孔等资料的重新分析与对比,依照<中国地层指南>对河北平原第四纪地层进行了重新划分和修订.以2.58 Ma为第四系下限,以0.78 Ma为中更新统底界,以相当深海氧同位素5阶段开始的0.128 Ma为上更新统底界,以大体相当深海氧同位素1阶段开始的0.01 Ma为全新统底界,修订后的河北平原第四系厚度减小40～220 m.该文是在以往研究基础上对河北平原第四纪地层划分的一次探讨,其成果为建立华北平原含水层结构模型搭建了平台.由于一些小区缺乏古地磁测年资料,而标志层、沉积物颜色特征界限又不明显,故影响了第四系下限和各统底界划分精度.
통과대이왕지층암성、성인류형、결구、표지층、~(14)C、고지자、찬공등자료적중신분석여대비,의조<중국지층지남>대하북평원제사기지층진행료중신화분화수정.이2.58 Ma위제사계하한,이0.78 Ma위중경신통저계,이상당심해양동위소5계단개시적0.128 Ma위상경신통저계,이대체상당심해양동위소1계단개시적0.01 Ma위전신통저계,수정후적하북평원제사계후도감소40～220 m.해문시재이왕연구기출상대하북평원제사기지층화분적일차탐토,기성과위건립화북평원함수층결구모형탑건료평태.유우일사소구결핍고지자측년자료,이표지층、침적물안색특정계한우불명현,고영향료제사계하한화각통저계화분정도.
Based on the past tested datum,such as carbon-14 age and paleomagnetism quantitative datum,integrating with the sediments color,lithology,structure,sedimentary rhythm and sedimentary cycles,marker bed included ancient soil,peat bed and leached horizon and so on,applying stratigraphy,biostratigraphy and climate stratigraphy and other means,728 holes are analyzed and according to Guide of China Stratigraphy,Quaternary stratigraphies of Hebei Plain have been preliminary revised.Taking 2.58 Ma as the lower boundary of the Quaternary,0.78 Ma as the lower boundary of the Middle Pleistocene,0.128 Ma,about equation the fifth stage of deep-sea oxygen isotope origination,as the lower boundary of the upper pleistocene,0.01 Ma,about equation the first stage of deep-sea oxygen isotope origination,as the lower boundary of the holocene series.The thickness of the Quaternary of Hebei Plain reduces 40～220 m after revised.It is the classification for the Quaternary stratigraphies of Hebei Plain study to build a platform for the aquifer structure model of the North China Plain.Due to lack of some palaeomagnetic datum in some individual small areas of the plain,the accuracy of the Quaternary lower boundary,the subdivision of the Quaternary and the regional top-level are effected.