Journal of Asian Earth Sciences 155 (2018) 146–153 Contents lists available at ScienceDirect Journal of Asian Earth Sciences journal homepage: www.elsevier.com/locate/jseaes Full length article Luminescence dating of the Zeketai loess section in the Ili Basin, northwestern China: Methodological considerations a,b, a Jintang Qin , Liping Zhou Laboratory for Earth Surface Processes, Department of Geography, Peking University, Beijing 100871, China State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China ARTICLE I NFO ABSTRACT Keywords: Loess deposits in Xinjiang, northwestern China are ideal archives for past environmental changes in the Loess Westerlies-dominated central Asia. Among previous luminescence dating studies of loess in Xinjiang, few have Luminescence dating attempted to systematically investigate the methodological aspects. In this study, we report results of a multiple- Xinjiang procedure luminescence dating of the Zeketai loess section in the Ili Basin, central Xinjiang. Optically stimulated Polymineral pIRIR luminescence (OSL) and post-infrared infrared stimulated luminescence (pIRIR) signals were used for quartz and Quartz OSL polymineral grains of diﬀerent sizes. The pIRIR ages obtained with two protocols agree well with each other and Age underestimation constrain the loess deposition between 50 ka and 88 ka. The OSL ages of ﬁne-grained quartz are
Journal of Asian Earth Sciences – Elsevier
Published: Apr 15, 2018
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