Palaeowind reconstruction from Lower Cretaceous wavedominated depositional records of the Tanan Depression,Northeast Asia
作者机构:School of Marine ScienceSun Yat-sen UniversityZhuhai 519083China School of Energy ResourcesChina University of Geosciences(Beijing)Beijing 100083China Sinopec Matrix CorporationQingdao 266000China Daqing Oilfield Production Technology InstituteDaqing 163453China
出 版 物:《Journal of Oceanology and Limnology》 (海洋湖沼学报(英文))
年 卷 期:2025年第43卷第1期
页 面:41-56页
核心收录:
基 金:Supported by the National Science and Technology Special Project of China(No.2017ZX05009-002) the China Scholarship Council(No.202106400055)
主 题:palaeowind beach ridge nearshore bar Early Cretaceous East Asia Summer Monsoon
摘 要:Palaeowind regime is an important component for reconstructing palaeoclimate and understanding ancient global *** applied the beach-ridge thickness technique(BTT)and the longshore-bar thickness technique(LTT)to reconstruct the Early Cretaceous palaeowind velocities based on depositional records of Tanan Depression in Northeast *** thickness of beach ridges and nearshore bars is the most important parameter for applying the BTT and the LTT *** identified 22 beach ridges and 23 nearshore bars based on drilling cores and wireline-log data in the Tanan *** velocities calculated by using the LTT method ranged from 10.84 to 13.66 m/s,showing a narrower range than those calculated by using the BTT method(7.58–15.93 m/s).We further analyzed the underlying factors causing the difference between the results derived from these two methods based on the sedimentary process of the beach ridge and the nearshore *** reconstructed wind regime was assumed to be the summer monsoon originating from the Mongol-Okhotsk Ocean before it had been completely enclosed,which provides valuable insight into the understanding of the atmospheric circulation in Northeast Asia during the Early Cretaceous.