| 河北平原第四纪地层划分研究 |
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| 引用本文： | 刘立军,徐海振,崔秋苹,王娟.河北平原第四纪地层划分研究[J].地理与地理信息科学,2010,26(2). |
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| 作者姓名： | 刘立军 徐海振 崔秋苹 王娟 |
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| 作者单位： | 河北省地矿局水文工程地质勘查院,河北,石家庄,050021 |
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| 基金项目： | 中国地质调查局国家地质大调查项目 |
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| 摘 要： | 通过对以往地层岩性、成因类型、结构、标志层1、4C、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。
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| 关 键 词： | 河北平原 第四纪 地层划分 |
Study on Quaternary Stratigraphic Division on Hebei Plain |
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| LIU Li-jun,XU Hai-zhen,CUI Qiu-ping,WANG Juan.Study on Quaternary Stratigraphic Division on Hebei Plain[J].Geography and Geo-Information Science,2010,26(2). |
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| Authors: | LIU Li-jun XU Hai-zhen CUI Qiu-ping WANG Juan |
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| Abstract: | 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. |
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| Keywords: | Hebei Plain Quaternary stratum division |
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