沉积学报2025，Vol.43Issue(5)：1592-1604,13.DOI:10.14027/j.issn.1000-0550.2025.056
三角洲分类及浅水三角洲定义问题探讨
Discussion on Classification of Deltas and Definition of Shallow-Water Deltas
摘要
Abstract
[Significance]As a crucial sedimentary system formed by the interaction of rivers and receiving water bodies(oceans or lakes),delta has become a research hotspot in sedimentology due to its unique depositional characteristics and resource potential.In particular,the discussion on the classification of delta types and the definition of shallow-water deltas has garnered significant attention.[Progress]This paper systematically reviews the research context of shallow-water deltas,focusing on the evolution of their definition and connotation.This includes multiple perspectives of definition based on basement subsidence rates,wave base,facies associations,and develop-ment settings.It summarizes research advances in sedimentary dynamic processes,morphological evolution and sandbody architecture,as well as controlling factors.The review reveals unique patterns of distributary channel activity and sandbody distribution under low-gradient and shallow-water hydrodynamic conditions.[Conclusions and Prospects]The limitations of existing delta classification schemes are comparatively analyzed.A four-type delta classification system is proposed,integrating basement subsidence rates,hydrodynamic conditions,and sedimentary settings.Four types of deltas include coastal shallow-water delta,coast-shelf deep-water delta,shelf-edge deep-water delta,and canyon deep-water delta.Meanwhile,the sedimentary models of coastal shallow-water deltas in coal-bearing strata are discussed,which clarifies the composition of subfacies such as the upper delta plain,lower delta plain,delta front,and prodelta,as well as the coal-accumulating characteristics of delta plains.关键词
浅水三角洲/深水三角洲/沉积体系/三角洲分类体系/含煤岩系Key words
shallow-water deltas/deep-water deltas/sedimentary system/classification system of deltas/coal-bearing series分类
天文与地球科学引用本文复制引用
邵龙义,潘浩,王学天,ZAVALA Carlos,周凯,杨仁超,邵延文,鲁静..三角洲分类及浅水三角洲定义问题探讨[J].沉积学报,2025,43(5):1592-1604,13.基金项目
国家自然科学基金项目(42530208,42302126)National Nartural Science Foundation of China,No.42530208,42302126 （42530208,42302126）
