沉积学报2023，Vol.41Issue(6)：1681-1713,33.DOI:10.14027/j.issn.1000-0550.2023.080
古风成沉积理论体系与研究进展
Theoretical System and Research Progress of Eolian Deposits
摘要
Abstract
[Significance]Eolian deposition,a product of wind erosion,transportation,and accumulation on the surface of the Earth,has a wide spatiotemporal distribution in geological history.Its formation and evolution are close-ly related to arid climatic conditions and the relatively continuous subsidence of paleogeographic backgrounds,mak-ing it an important carrier and ideal material for regional paleogeography and paleoclimatology research.After nearly a century of research,a relatively complete theoretical system of eolian deposition has been formed internationally,effectively promoting the identification and interpretation of ancient eolian deposits.Given the lack of a systematic in-troduction to eolian deposition theory in China,it is necessary to provide a review to enhance understanding of eolian deposition theory and research methods.[Progress]By reviewing previous literature and drawing upon personal re-search experience,a comprehensive review of the theoretical framework of eolian deposition was conducted,focusing on aspects such as atmospheric flow characteristics,fluid properties and wind fields,sediment transport,composi-tion and structure of eolian deposits,eolian bedforms,eolian stratigraphy,eolian bounding surfaces,eolian deposi-tional systems,and the formation and preservation of eolian deposits.[Conclusions and Prospects]Inverse grain size sequences in wind ripple marks,wind ripple strata,desert varnish on particle surfaces,dish-shaped impact cra-ters,crescent-shaped impact craters,graded arcs,and overturned laminations in quartz microtextures can serve as absolute indicators for identifying eolian deposition.A comprehensive analysis of aeolian stratigraphy and erosional bounding surfaces is a fundamental method for reconstructing ancient dune types.Using interdisciplinary approach-es,it is possible to effectively extract paleogeographic and paleoclimatic information contained within eolian depos-its,which is of great scientific significance for studying regional and global geological events.关键词
风成沉积/古地理/古气候/理论体系Key words
eolian deposition/paleogeography/paleoclimatology/theoretical system分类
天文与地球科学引用本文复制引用
许欢,柳永清,旷红伟,彭楠,丁家翔,杜研,苑婷媛..古风成沉积理论体系与研究进展[J].沉积学报,2023,41(6):1681-1713,33.基金项目
国家自然科学基金项目(41991323,41802009,42288201) （41991323,41802009,42288201）
云南省中青年学术与技术带头人后备人才项目(202205AC160020)National Natural Science Foundation of China,No.41991323,41802009,42288201 （202205AC160020）
Reserve Talents of Young and Middle-aged Aca-demic and Technical Leaders in Yunnan Province,No.202205AC160020 （）
