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内波、内潮汐沉积是深水沉积研究中一个非常年轻的研究领域,自发现到现在仅仅20年时间,对其沉积类型的研究目前尚未涉及。以宁夏香山群徐家圈组中的内波、内潮汐沉积为对象,详细描述了深水环境中形成的双向交错层理、单向交错层理、复合流层理及具有波状纹层、束状纹层和交错纹层透镜体的交错层理,并探讨了其成因机制,识别出了短周期内波沉积。在此基础之上,结合已有的内波、内潮汐沉积鉴别标志,从沉积构造的角度对内波、内潮汐沉积类型进行了探讨。将内波、内潮汐沉积分为短周期内波沉积、内潮汐沉积和叠加内波沉积。鉴于内潮汐形成机制的独特性和海洋物理学中内波的研究现状,三者仍统称为内波、内潮汐沉积。
Internal wave and internal tide deposition is a very young research area in deepwater sediment research. Since its discovery to the present only 20 years, the research on its sedimentary types has not been covered yet. Taking the internal wave and the internal tide deposition in the Xujiaquan Formation of Xiangshan Group in Ningxia as an example, this paper describes in detail two-way cross bedding, unidirectional bedding bedding, composite bedding, wavy bedding, Interlaced bedding of interlaminar and lenticular lens bodies, and discussed their genesis mechanism, identified a short period of wave deposition. Based on this, the types of internal wave and internal tide deposition are discussed from the perspective of sedimentary structure based on the existing identification marks of internal wave and internal tide deposition. The inner and inner tide depositions are divided into short-period wave deposition, inner tide deposition and superimposed inner-wave deposition. In view of the uniqueness of the formation mechanism of internal tide and the research status of internal waves in marine physics, the three are still collectively referred to as internal waves and internal tidal sediments.