Fine grain IRSL and GLSL dating of late Quaternary sediments from North China

作     者：ZHAO Hua LU Yanchou CHEN Jie YING Gongming 

作者机构：Institute of Earth EnvironmentChinese Academy of SciencesXi’an 710054China Insitute of GeologySeismological Bureau of ChinaBeijing 100029China 

出 版 物：《Chinese Science Bulletin》 (Chin. Sci. Bull.)

年 卷 期：2001年第46卷第4期

页      面：334-337页

核心收录：

学科分类：070902[理学-地球化学] 0709[理学-地质学] 07[理学] 

基　　金：the National Natural Science Foundation of China (Grant No. 49872062) by the Chinese Academy of Sciences (Grant No. KZ951-A 1-402-07) 

主　　题：comparison of IRSL and GLSL dating fine grain Quaternary sediments North China. 

摘      要：A possible approach to assess the fine grain OSL dating is discussed through comparison of equivalent dose (DE) values and ages obtained by IRSL and GLSL of fine grains for 31 sediment samples from North China. The IRSL and GLSL were measured with the same aliquots for each sample, i.e. shine-down was by 100 s of IRSL (880 nm) followed by 100 s of GLSL (514 nm) on the same discs. The DE values and ages found by IRSL are in good agreement with those by GLSL within 1-2σ for 80% samples, especially for aeolian loess samples. Considering that IRSL from feldspar differs obviously from GLSL dominated from quartz in dose response, thermal stability and optical bleaching characteristic, the agreement between the DE values may be taken as evidence that the two clocks of IRSL and GLSL had been well reset during deposition. The consistent ages of IRSL and GLSL, in turn, may be referred to an indicator to evaluate the fine grain OSL dating of sediments.