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・ Lower Woodside
・ Lower Woodward Avenue Historic District
・ Lower Woon
・ Lower Wraxall
・ Lower Wunna Dam
・ Lower Wye Gorge SSSI
・ Lower Wyke
・ Lower Xiajiadian culture
・ Lower Yafa
・ Lower Yangtze Mandarin
・ Lower Yemen
・ Lower Shelton
・ Lower Shing Mun (constituency)
・ Lower Shing Mun Reservoir
・ Lower Ship Harbour, Nova Scotia
Lower shoreface
・ Lower Shuckburgh
・ Lower Siang district
・ Lower Silesia
・ Lower Silesia Province
・ Lower Silesian
・ Lower Silesian and Opole (European Parliament constituency)
・ Lower Silesian Offensive
・ Lower Silesian Provinzialtag elections in the Weimar Republic
・ Lower Silesian Regional Assembly
・ Lower Silesian Voivodeship
・ Lower Silesian Wilderness
・ Lower Silvermine River Wetlands
・ Lower Similkameen Indian Band
・ Lower Sinjol


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Lower shoreface : ウィキペディア英語版
Lower shoreface

Lower Shoreface refers to the portion of the seafloor, and the sedimentary depositional environment, that lies below the everyday wave base.
It is also used for the sandstone sedimentary structure rock formations that were produced by this process in an earlier geologic era, such as the Cretaceous Period.
==Process==
The wave base is the maximum depth at which a water wave's passage causes significant water motion.〔
In this portion of the coastal marine environment, only the larger waves produced during storms have the power to agitate the seafloor.
Between storms, finer grained sediments accumulate on the seafloor, but during storms those sediments get suspended and moved around, resulting in a sedimentary structure form described as hummocky cross-stratification.〔

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「Lower shoreface」の詳細全文を読む



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