Preliminary study of Late Cretaceous loess-like sediments in the Hengyang basin, South China

被引：0
|
作者：
Shi Y. [1 ,2 ]
Wu C. [2 ,3 ]
Huang L. [4 ,5 ]
Yi H. [2 ,3 ]
Li Z. [2 ,3 ]
Jiao H. [6 ]
Yang J. [7 ]
Qin J. [2 ]
Zhang X. [2 ]
Zhou Y. [2 ]
Rodríguez-López J.P. [2 ,8 ,9 ]
机构：
[1] College of Earth Sciences, Chengdu University of Technology, Sichuan, Chengdu
[2] Institute of Sedimentary Geology, Chengdu University of Technology, Sichuan, Chengdu
[3] Stale Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Institute of Sedimentary Geology, Chengdu University of Technology, Sichuan, Chengdu
[4] Geological Survey Institute of Hunan Province, Hunan, Changsha
[5] Institute of Geological Survey of China University of Geosciences (Wuhan), Hubei, Wuhan
[6] Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangzhou, Zhuhai
[7] Research Institute No. 280, CNNC, Sichuan, Guanghan
[8] Department of Geology, Faculty of Science and Technology, University of the Basque Country 37 UPV/EHU, Ap. 644, Bilbao
[9] Perma Frost Laboratory, Department of Geography, University of Sussex, Brighton
来源：
Dizhi Xuebao/Acta Geologica Sinica | 2023年 / 97卷 / 09期
关键词：
aeolian deposits; Hengyang basin; Honghuatao Formation; Late Cretaceous; loess-like;
D O I：
10.19762/j.cnki.dizhixuebao.2023042
中图分类号：
学科分类号：
摘要：
The Cenozoic loess sequence in China is characterized by high sedimentation rates and continuity, which record the continuous paleoclimatic dynamics and significant geological events in East Asia, leading to a series of cutting-edge scientific questions that have received widespread attention on a global scale. Influenced by regional tectonic-geomorphic processes and atmospheric circulation patterns, numerous basin-mountain desert systems with extensive windblown sand formations developed in southern China during the Late Mesozoic. However, little attention has been given to the existence of loess or loess-like deposits in these areas. In this study, the Upper Cretaceous Honghuatao Formation in the Hengyang basin was preliminarily investigated using grain size end-member analysis and field exposure configuration analysis. Environmental types including aeolian dunes, sand sheets, and mud flats were identified. Additionally, grain size components resembling loess were extracted from the mudflat environment. The study proposes acolian origin for these loess-like deposits and summarizes their formation and accumulation processes. This work aims to explore the possibility of loess-like deposits during the Cretaceous period, providing insights for future studies on dust records in the Mesozoic southern China. © 2023 Geological Society of China. All rights reserved.
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页码：3101 / 3115
页数：14
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