Late Pleistocene aeolian activity in Haitan Island, Southeast China: Insights from optically stimulated luminescence dating of coastal dunes on marine terraces

作     者：JIN Jian-hui LI Zhi-zhong CHENG Yan XU Xiao-lin LI Zhi-xing LIU Xiao-ju 

作者机构：Institute of Geography Fujian Normal University Key Laboratory for Humid Subtropical Eco-geographical Processes of the Ministry of Education Fujian Normal University College of Geographical Sciences Fujian Normal University 

出 版 物：《Journal of Mountain Science》 (山地科学学报（英文）)

年 卷 期：2018年第15卷第8期

页      面：1777-1788页

核心收录：

学科分类：09[农学] 

基　　金：funded by the National Natural Science Foundation of China (Grants Nos. 41301012, 41771020 and U1405231) Natural Science Foundation of Fujian (Grant No. 2018R1034-5) Innovation Research Team Fund of Fujian Normal University (Grant No. IRTL1705) 

主　　题：Aeolian activity Sediment dating Optically Stimulated Luminescence (OSL) Late Pleistocene Environmental evolution Haitan Island 

摘      要：The Old Red Sand is a type of semicemented medium-fine sandy sediment that is red(10R_4/8) or brown red(2.5YR_4/8) in colour and is found in late Quaternary deposits. The sediments have distinctive characteristics and are a critical archive for understanding climatic changes in the coastal areas of East Asia. The ages of the late Quaternary aeolian sand dunes from Haitan Island in the coastal area of South China are still in debate. In this study, three sets of marine terraces were identified in the northern region of Haitan Island. Aeolian dune sands are well preserved on the top of these terraces. Quartz Optically Stimulated Luminescence dating and the distribution of the formation ages demonstrated that the palaeo-dunes are deposits from the middle-late period of the Late Pleistocene(Q_3^(2-3)). The period may be divided into three stages, 100-90 ka, 70-60 ka, and 40-20 ka, in which the palaeo-dunes of the first two stages are more widespread and were formed separately during a low-sea level period of the Marine Isotope Stages 5 b and 4. Several depositional palaeo-flood event records were preserved during the last stage due to the increasing gradient of mountain gullies formed during the Last Glacial Maximum.