摘要
本文分析了中太平洋沉积物中的碎屑成分,探讨了其分布特点和物质来源。碎屑物成分主要由轻组分——钙质化石、硅质化石和钙十字沸石组成。重矿物种类30余种。硅质化石在调查区内广泛分布,它和钙质化石的分布成制约关系。物质来源主要是大洋生源和自生形成的,少量为海底火山喷发物,极少为地外和陆源物质。此外,初步探讨了锰结核的分布与沉积物成分及其粗、细组分之间的关系。
In this paper, the detrital compositions in the central Pacific Ocean sediments were analyzed, and their distribution regularity and sources were discussed. The compositions of the detrital minerals are mainly composed of light components: calcareous fossils, siliceous fossils and phillipsites.
There were more than 30 kinds of heavy minerals. Siliceous fossils are very common in the research area. The distributions of the calcareous and siliceous fossils condition each other. The materials are mainly derived from marine organism and from authigenic minerals in ocean, minor from volcanic eruption, and a little from land and space. In addition, the relations between distribution of manganese nodules and detrital compositions and size of sediments were tentatively discussed.
出处
《东海海洋》
1990年第2期38-44,共7页
Donghai Marine Science
