A Dating Model of Loess Stratigraphy in the Central Chine se Loess Plateau and Its Prelrminary Application

Lu Huayu; An Zhisheng; J. Vandenberghe; G. Nugteren; N. Mingaars; J. Schwan

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) ( ∑^m_{i= 1}Ci Hi ) /( ∑ⁿ_{i= 1}Ci 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.

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

Received Date: 1996-10-16

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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) ( ∑^m_{i= 1}Ci Hi ) /( ∑ⁿ_{i= 1}Ci 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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Reference (10)

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A Dating Model of Loess Stratigraphy in the Central Chine se Loess Plateau and Its Prelrminary Application

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