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Tidal bundle : ウィキペディア英語版 | Tidal bundle
A tidal bundle is a sedimentary structure that forms in tidal areas as a result of spring and neap tides. ==Overview== A tidal bundle sequence can be seen as a variation in bed thickness with a periodicity of 14 days (diurnal) or 28 days (semidiurnal). During the neap tide, when the tidal current strength is weakest, smaller quantities of finer grains are deposited. As the tidal variation grows larger, towards the spring tide, larger quantities of coarser material will be deposited which results in an increasing bed thickness. Bed thickness will be greatest at the spring tide and then decreases as the tidal variation grows smaller, towards the neap tide again and the thinnest beds.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Tidal bundle」の詳細全文を読む
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