| 平顶村剖面古气候变化记录 |
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| 引用本文： | 迟振卿,闵隆瑞.平顶村剖面古气候变化记录[J].地质力学学报,1999,5(4):66-72. |
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| 作者姓名： | 迟振卿 闵隆瑞 |
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| 作者单位： | 中国地质科学院地质研究所,北京,100037 |
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| 基金项目： | ：原地质矿产部“九五”重点基础研究项目(编号：9501113)和河北省阳原、井儿沟幅1/5万区调项目 |
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| 摘 要： | 对河北省阳原盆地平顶村剖面的野外观察，孢偻分析及＾１４Ｃ测年，作者认为，该剖面的地质时代为晚更新世晚期至全新世早期。依据Ｆｅ＾３＋／Ｆｅ＾２＋值估计温度并结合ＣａＣＯ３含量分析，该区自晚更新世晚期至全新切早期，古气候经历了温凉湿润→寒凉偏干→寒冷湿润→温冷干燥的变化过程；
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| 关 键 词： | 阳原 平顶村剖面 古气候变化 |
| 收稿时间： | 1999/7/15 0:00:00 |
| 修稿时间： | 1999-07-15 |
RECORD OF PALEOENVIRONMENTAL CHANGES IN PINGDINGCUN SECTION, HEBEI PROVINCE |
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| CHI Zhen-qing,MIN Long-rui.RECORD OF PALEOENVIRONMENTAL CHANGES IN PINGDINGCUN SECTION, HEBEI PROVINCE[J].Journal of Geomechanics,1999,5(4):66-72. |
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| Authors: | CHI Zhen-qing MIN Long-rui |
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| Institution: | Institute of geology, CAGS, Beijing 100082, China and Institute of geology, CAGS, Beijing 100082, China |
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| Abstract: | From field observation, sporopollen analysis and 14C dating of samples collected from the Pingdingcun Section, Hebei province, the sediments involved are determined to have formed from Late Pleistocene to Early Holocene.According to an estimate of the temperature then prevailing by Fe3+/Fe2+ ratio and an analysis of the change of CaCO3 content, the paleoclimate of the Yangyuan area has obviously experienced four stages in the period, i.e. warm-humid, cold-dry, cold-humid and warm-dry stages.The sporopollen assemblages reflect that a change in vegetation from forest to grass land has occurred. |
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| Keywords: | Yangyuan County Pindingcun Section paleoclimatic change |
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