本文選題：杭州灣 + 潮灘沉積物�。� 參考：《沉積學(xué)報(bào)》2016年02期

【摘要】：通過(guò)對(duì)杭州灣潮灘沉積物中主要黏土礦物成分及組合類型的研究,分析了杭州灣潮灘沉積物黏土礦物的空間分布特征。借助聚類分析等手段,同時(shí)結(jié)合杭州灣水動(dòng)力特征,探討了研究區(qū)黏土礦物的來(lái)源和成因。研究結(jié)果表明,杭州灣潮灘表層沉積物主要為黏土質(zhì)粉砂,其余為砂質(zhì)粉砂。本區(qū)沉積物黏土礦物成分復(fù)雜,主要為伊利石,其次是高嶺石和綠泥石;還有少量蒙皂石和蛭石及1.4 nm過(guò)渡礦物。根據(jù)其相對(duì)含量可分為3種組合類型:Ⅰ型為伊利石—高嶺石—綠泥石—蛭石類—蒙皂石型,Ⅱ型為伊利石—綠泥石—高嶺石—蒙皂石—蛭石類型,Ⅲ型為伊利石—高嶺石—綠泥石—蒙皂石—蛭石類型。在空間上,北岸的蒙皂石和綠泥石平均含量高于南岸,而伊利石、高嶺石和蛭石(含1.4 nm過(guò)渡礦物)平均含量則低于南岸。高潮灘和中潮灘黏土礦物對(duì)比,除了蒙皂石含量高潮灘大于中潮灘外,其他礦物含量均無(wú)明顯規(guī)律。表層沉積物黏土礦物的分布特征與水動(dòng)力條件和物質(zhì)來(lái)源密切相關(guān),杭州灣北岸乍浦以東潮灘受潮流和長(zhǎng)江沿岸流影響明顯,沉積物主要為長(zhǎng)江和東海源的;南岸由于曹娥江和甬江兩條河流的注入,流域物質(zhì)所占比例明顯比北岸高。柱狀巖芯樣品中各黏土礦物含量自下而上的變化則反映了物源區(qū)風(fēng)化強(qiáng)度的波動(dòng)特征。
[Abstract]:The spatial distribution characteristics of clay minerals in tidal flat sediments of Hangzhou Bay were analyzed by studying the composition and assemblage types of clay minerals in tidal flat sediments of Hangzhou Bay. By means of cluster analysis and hydrodynamic characteristics of Hangzhou Bay, the origin and origin of clay minerals in the study area are discussed. The results show that the surface sediments of the tidal flat in Hangzhou Bay are mainly clay silt and the rest are sandy silt. The mineral composition of clay is complex, mainly Illite, followed by kaolinite and chlorite, and a small amount of montmorillonite and vermiculite, as well as 1.4 nm transition minerals. According to its relative content, it can be divided into three types: type I is Illite-kaolinite-chlorite-vermiculite-montmorillonite type, type II is Illite-chlorite-kaolinite-montmorillonite-vermiculite type. Type 鈪，

本文編號(hào)：1920177