近代大陆架海侵式沉积模式的探讨   总被引：1，自引：0，他引：1  

林禾杰  黄杏珍  潘中海  李承先 《海洋与湖沼》1984,15(2):179-187

大多数近代大陆架调查证明,表层沉积物形成及分布的基本规律是:由岸向海呈内细外粗“三带式“;中国近代大陆架也不例外。对其成因机理,前人做过大量的工作。本文试以南海大陆架北部近代沉积物沉积学研究为主,拟阐明“三带式“是海侵式沉积模式基本特征的观点,以便为古代海相碎屑岩地层研究提供“将今论古“的类比依据。  相似文献   

伊朗卡尔赫软岩的工程分类     

李承先 《水文地质工程地质》1996,23(5):42-44

本文主要结合卡尔赫工程的砾岩、砂岩和泥岩等软岩，探讨软岩的工程分类方法。采用岩石的可钻性、渗透性、动力特征和变形性质等参数对隧洞围岩进行分类，为洞线的选择、隧洞的结构设计和施工提供了依据。  相似文献   

An approach to the transgressive sedimentary pattern of the present continental shelf     

林禾杰  黄杏珍  潘中海  李承先 《中国海洋湖沼学报》1987,5(2):161-171

On the basis of our study of the present sediments in the northern part of the continental shelf of the South China Sea, this article clarifies our views that a "three-zone pattern" is the basic feature of transgression-type sedimentation.The classification of transgression-type sedimentation of the present continental shelf is based on: the close relationships between the formation of the present continental shelf and the position of the low sea level of the Wiirrn glacial stage, the genetic types and environmental features of sedimentary zoning, the relationship between the formation of glauconite with different maturity and the migration of coastline, the speed of transgression, and the overlying speed of sedimentation. We put forward the genetic name of the "three-zone pattern" to denote:1.The inner zouu, river mouth-coastal current sedimentary area;2.The intermediate zone, coastal current-sea current scouring-sedimentary area;3.The outer zone, sea current scouring area.All these are of significance  相似文献