Reconstruction of sedimentary process of coarse-grained foresets from description of Tertiary fan-delta foreset beds and flume experiments

从第三纪扇三角洲前积层描述和水槽实验重建粗粒前积层沉积过程

• 批准号: 22540467
• 负责人: MURAKOSHI Naomi
• 金额: $ 2万
• 依托单位: Shinshu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22540467/
• 关键词: フォアセット; ファンデルタ; 堆積構造; 堆積プロセス; 水路実験; 混合粒径

Sedimentary structures and their depositional processes of coarse-grained foresets were investigated by description of Tertiary fandelta deposit and flume experiments using mixed-sized sediments. During a foreset deposition, the different behaviors of sediment grains due to their diameters are important on the transition of a foreset sedimentary structure, i.e., diffusion of fine grains and depletion of coarser grains, mixing of grain-flow of granules and fines, and sorting processes within grain flows.

通过第三纪扇三角洲沉积描述和使用混合尺寸沉积物的水槽实验，研究了粗粒前积层的沉积结构及其沉积过程。在前积沉积过程中，沉积物颗粒因其直径而产生的不同行为对于前积沉积结构的转变非常重要，即细颗粒的扩散和粗颗粒的消耗、颗粒和细颗粒的颗粒流的混合以及分选谷物流中的过程。