• 责任者：Zhao Can (Wuhan Institute of Geology and Mineral Resources ; Wuhan 430223 ; China) ; Chen Xiaohong
• 刊名：Acta Geologica Sinica
• 出版年：2013
• 卷期：87(12)
• 关键词：风暴岩 ; tempestite ; 沉积构造 ; sedimentary structure ; 湖北 ; Hubei Province
• 页码：p.1901-1912
• 图表：5 illus., 64 refs.
• 分类号：0803
• issnNo：ISSN0001-5717
• isbnNo：CN11-1951/P

     Tempestite of the Ediacaran Dengying Formation has been discovered for the first time in the Eastern Yangtze Gorges area. The outcrop sections and our observation helped recognize many depositional characteristics of storm deposits, such as hummocky cross stratifications, scouring-filling structures, graded bedding and convolute bedding. Four types of storm deposits have been recognized. Type I is characterized by stranded gravel deposition, hummocky cross stratifications, and scouring base, which was formed in the vicinity of the fair weather wave base. Type ]~ is characterized by the intraclastic limestones, hummocky cross stratifications and convolute bedding, which was formed in the upper ramp environment. Type HI is characterized by the limestones with gutter cast and hummocky cross stratifications, which were deposited at the places between storm and fine weather wave base. Type IV is represented by the thin bedded silty micrites formed by distal storm turbidity currents below storm wave base. Study of the storm deposits indicates that the tempestites carry important paleoclimate information and frequent occurrences of storms responded to climate changes during the Dengying Period, in which relatively strong tectonic activity and complicated submarine topography was responsible for the formation of tempestites. Therefore, the characteristics of tempestites are of great significance in understanding of stratigraphic comparison study.