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笔者调查了北阿拉伯湾北部的科威特湾近代海底沉积物结构和矿物特征,鉴别出六种沉积物类型,即粉砂质粘土、粘土质粉砂、砂质泥、粉砂、泥质砂和砂。发现科威特湾中央水道和大部分北部陆架复盖着泥质沉积物,而砂和砂质沉积物只局限在科威特湾南部近岸区。根据其沉积物结构特征,科威特湾的环境可划分为两个能带:(a)低能带,包括大部分海湾区:(b)中等能带,局限在海湾南部近岸区。科威特湾沉积物各粒级的详细矿物学研究表明成因上它们是多源的。海湾沉积物可识别有两种主要来源,即(a)原地物质,来自多种动物群近代贝壳分解,来自水下古代沉积物和亚近代海岸沉积物的剥蚀作用;(b)外来物质,由盛行的西北风带来的岸上沙漠沉积物。也可认为,有大量的海湾沉积物组分系来自尘暴降落物。
The author investigated the structural and mineral characteristics of recent seabed sediments in the Kuwait Bay in the northern part of the northern Arabian Gulf and identified six sediment types, namely silty clay, clayey silt, sandy mud, silt, shale and sand . It was found that the Kuwaiti Bay central waterway and most of the northern shelf were covered with muddy sediments, whereas sand and sandy sediments were confined to the southern coast of Kuwait Bay only. Based on the structural features of the sediments, the Kuwaiti Bay’s environment can be divided into two bands: (a) low band, including most of the bay area: (b) medium band, confined to the southern coastal area of the Gulf. Detailed mineralogical studies of the various fractions of sediment in the Kuwait Bay show that they are polygenic in origin. There are two main sources of Gulf sediments that can be identified: (a) In-situ matter from the decomposition of modern shellfish from a variety of fauna from the denudation of ancient underwater sediments and sub-modern coastal sediments; (b) Foreign matter, Shore desert sediments brought by the prevailing northwest winds. It is also believed that a large amount of Gulf sediments are derived from dustfalls.