Journal of Asian Earth Sciences 155 (2018) 139–145 Contents lists available at ScienceDirect Journal of Asian Earth Sciences journal homepage: www.elsevier.com/locate/jseaes Full length article a a, b,c b,c Junjie Zhang , Sheng-Hua Li , Jimin Sun , Qingzhen Hao Department of Earth Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, China Institute of Geology and Geophysics, Chinese Academy of Sciences, PO Box 9825, Beijing 100029, China University of Chinese Academy of Sciences, Beijing 100049, China ARTICLE I NFO ABSTRACT Keywords: Optically stimulated luminescence (OSL) dating on potassium feldspar has been performed with high resolution OSL ages in the Luochuan section in the Chinese Loess Plateau. An age hiatus of∼ 15 ka is found at the top of L2 layer Chinese Loess Plateau within the loess/paleosol sequences. The age of the potassium feldspar from the calcrete nodules along the S1/L2 Age hiatus boundary is signiﬁcantly older than those of the paleosol and loess samples lying above and below the boundary. Calcrete nodules The age overestimation of the potassium feldspar from calcrete nodules is caused by the underestimation of the Dose rate dose rate, because accretion of carbonates could dilute the radioactivity. The age hiatus at the top of
Journal of Asian Earth Sciences – Elsevier
Published: Apr 15, 2018
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