古风成沉积理论体系与研究进展【纪念专刊】
- 收稿日期:
2023-04-12
- 网络出版日期:
2023-09-25
摘要: 风成沉积作为风对地球表层沉积物剥蚀、搬运和堆积的产物，在地质历史时期具有广泛的时空分布，其形成演化与以干旱为主的气候条件和相对持续沉降的古地理背景密切相关，是开展区域古地理和古气候研究的重要载体和理想材料。经过近百年的研究，目前国际上已形了成较为完善的风成沉积理论体系，有效地促进了古风成沉积的识别和解释。然而，目前国内还没有相关综述性文章对风成沉积理论体系进行系统介绍。近年来，随着我国越来越多的古沙漠盆地被发现和报道，古风成沉积的研究逐渐受到了国内外广泛关注。为了更好的推动我国风成沉积学研究，本文在前人研究基础上，从大气的流动特征、风的流体性质与风场、沉积物的搬运、风成沉积的组成与结构、风成床沙形体、风成地层、风成界面、风成沉积体系、风成沉积的形成与保存等方面对风成沉积理论体系进行了详细介绍，探讨了当前风成沉积研究中存在的问题，并展望了未来研究的重要方向。
Theoretical system and research progress of eolian deposits
- Received Date:
2023-04-12
- Available Online:
2023-09-25
Abstract: Eolian deposition, as a product of wind erosion, transportation, and accumulation on the Earth's surface, has a wide spatial and temporal distribution in geological history. Its formation and evolution are closely related to arid climatic conditions and relatively continuous subsidence of paleogeographic backgrounds, making 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, which has effectively promoted the identification and interpretation of ancient eolian deposits. However, there is currently no systematic introduction to the theoretical system of eolian deposition in China. In recent years, with the discovery and reporting of more ancient desert basins in China, research on ancient eolian deposition has gradually attracted widespread attention both domestically and internationally. In order to better promote research on aeolian deposition in China, this article provides a detailed introduction to the theoretical system of eolian deposition based on previous research, including the atmospheric flow characteristics, fluid properties and wind fields, sediment transport, composition and structure of eolian deposits, eolian bedform morphology, eolian stratigraphy, eolian interfaces, eolian depositional systems, formation and preservation of eolian deposits, etc. The current problems in eolian deposition research are discussed, and important future research directions are proposed.
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