| 洛川黄土地层定年的一个模式及其初步应用 |
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| 引用本文： | 鹿化煜,安芷生.洛川黄土地层定年的一个模式及其初步应用[J].沉积学报,1997,15(3):150-152. |
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| 作者姓名： | 鹿化煜 安芷生 |
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| 作者单位： | 1 中国科学院黄土与第四纪地质国家重点实验室,西安 710054; |
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| 基金项目： | 中国科学院黄土与第四纪地质国家重点实验室开放基金,荷兰皇家科学院科学研究基金 |
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| 摘 要： | 选择黄土中２～１６μｍ的颗粒作为沉积速率相对稳定的大气粉尘沉降组分，根据黄土粒度变化与沉积速率变化的相关性，设计了以下的年代学模型:Ｔｍ＝Ｔ１＋（Ｔ２－Ｔ１）（∑ｍｉ＝１ＣｉＨｉ）/（∑ｎｉ＝１ＣｉＨｉ）以黄土地层中根据热释光和古地磁极性倒转点获得的绝对年代作为时间控制点，利用上面的模式对洛川第四纪黄土地层的年代进行了计算，结果表明该模式可以用于黄土高原中部黄土地层的精细定年。
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| 关 键 词： | 黄土地层 定年模式 洛川 |
| 收稿时间： | 1996-10-16 |
A Dating Model of Loess Stratigraphy in the Central Chine se Loess Plateau and Its Prelrminary Application |
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| Lu Huayu \,An Zhisheng \ J.Vandenberghe,G.Nugteren \ N.Mingaars,and J.Schwan.A Dating Model of Loess Stratigraphy in the Central Chine se Loess Plateau and Its Prelrminary Application[J].Acta Sedimentologica Sinica,1997,15(3):150-152. |
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| Authors: | Lu Huayu \ An Zhisheng \ JVandenberghe GNugteren \ NMingaars and JSchwan |
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| Institution: | 1 Department of Geo and Ocean Sciences, Nanjing University, Nanjing 210093;2 The State Key Labo ratory of Loess and Quaternary Geology, Chinese Academy of Sciences, Xi'an 710054;3 Faculty of Earth Sciences, Free Univ ersity, Amsterdam, The Netherlands |
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| Abstract: | The 2～ 6μ m particle fractions of loess were employed as the relatively stable dust depositionalflux. On the basis of the relationship between grain size fluctuation and depositional flux variation ofloess, the following dating model was used to calculate ages of loess stratigraphy in the central Chinese loess plateau:Tm = T1+ ( T2 - T 1) ( ∑mi= 1Ci Hi ) /( ∑ni= 1Ci Hi)Abosolute ages calibrated by thermoluminescence and palaeomagnetic reversal boundary wereserved as the time controlling points to obtain detail ages of the Luochuan loess profile, the resultsshowed that our dating model is useful in calibrating detail ages of loess stratigraphy in the central Chi-nese loess plateau. |
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| Keywords: | loess stratigraphy\ dating model\ Luochuan |
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