【摘要】：本文是根據(jù)福建省908專項《福建海灣志》編纂項目在泉州灣采集的70個表層沉積物樣品,對其進(jìn)行了粒度、地球化學(xué)元素和黏土礦物含量的分析,并進(jìn)一步分析了泉州灣表層沉積物的粒度特征,粒徑運(yùn)移趨勢,沉積物類型分布特征,地球化學(xué)特征,地球化學(xué)元素的粒度效應(yīng),黏土礦物的分布特征,并且潮流矢量圖和粒度參數(shù)在橫向上進(jìn)行了定性化對比,以及諸要素與潮流水動力學(xué)之間的相關(guān)關(guān)系。研究結(jié)果表明:1、采用圖解法和矩法兩種分析方法,對比分析了泉州灣表層沉積物粒度參數(shù)特征,結(jié)果表明,圖解法和矩法在計算沉積物粒度參數(shù)時各有其優(yōu)缺點,應(yīng)該在實際應(yīng)用中根據(jù)需要而選擇恰當(dāng)?shù)姆椒?根據(jù)沉積物粒度參數(shù)對采樣點進(jìn)行Q型聚類后和沉積物的曲線特征吻合得很好;進(jìn)一步采用沉積物粒級別組分進(jìn)行了R因子分析、粒徑趨勢運(yùn)移分析了沉積物的可能輸入來源;2、對于某一種粒度參數(shù)計算方法而言,不同的粒度參數(shù),在橫向上具有不同的變化特征,并且和流速矢量圖進(jìn)行對比后發(fā)現(xiàn),受到潮流的影響比較明顯,但是和漲潮落潮流速進(jìn)行定量化相關(guān)性分析后,并沒有得到較好的相關(guān)性;3、研究后根據(jù)謝帕德三角形分類可把泉州灣沉積物劃分為四大類,平面上的分布以黏土質(zhì)粉砂和砂為主,粉砂質(zhì)砂和砂質(zhì)粉砂僅在零星區(qū)域分布;4、沉積物粒度與大多數(shù)地球化學(xué)元素有很好的相關(guān)關(guān)系,只有少數(shù)的元素和粒度不成相關(guān)性;5、通過對比周邊花崗巖中元素豐度特征,以及大陸地殼豐度,近海沉積物元素豐度,可以推斷出泉州灣沉積物主要物源為周邊花崗巖,并受到了其它來源的擾動;6、研究區(qū)黏土礦物以伊利石和高嶺石居多,綠泥石次之,僅占有很少量的蒙脫石。
[Abstract]:This paper is based on 70 surface sediment samples collected in Quanzhou Bay by Fujian Province 908 special "Fujian Gulf Records" compilation project. The grain size, geochemical elements and clay content are analyzed. The grain size characteristics, grain size migration trend, sediment type distribution characteristics, grain size effect of geochemical elements and clay mineral distribution characteristics of surface sediments in Quanzhou Bay are further analyzed. And the horizontal comparison of power flow vector diagram and particle size parameters is carried out, and the correlation between the elements and tidal current hydrodynamics is also discussed. The results show that the diagrammatic method and moment method are used to compare and analyze the grain size parameters of surface sediment in Quanzhou Bay. The results show that the graphical method and the moment method have their own advantages and disadvantages in calculating the grain size parameters of the sediments. The appropriate method should be chosen according to the need in practical application, and the Q cluster of sampling points according to the parameters of sediment granularity is in good agreement with the curve characteristics of sediment. Furthermore, the R factor analysis of sediment grain-grade components was carried out, and the grain size trend migration was used to analyze the possible input source of sediment. For a certain method of calculating granularity parameters, different granularity parameters were obtained. After comparing with the velocity vector diagram, it is found that the influence of tidal current is obvious, but after quantitative correlation analysis with the flow velocity of high tide and ebb tide, The sediment in Quanzhou Bay can be divided into four categories according to the Sheppard triangle classification. The distribution on the plane is mainly clay silty sand and sand. Silty sand and sandy silt are only distributed in sporadic areas, and the grain size of sediment has a good correlation with most geochemical elements. Only a few elements and granularity are not related to each other. By comparing the characteristics of element abundance in the surrounding granite, As well as continental crust abundance and element abundance in offshore sediments, it can be inferred that the main source of sediments in Quanzhou Bay is peripheral granite, and has been disturbed by other sources. The clay minerals in the study area are mostly Illite and kaolinite, followed by chlorite. Only a small amount of montmorillonite is occupied.
【學(xué)位授予單位】：國家海洋局第三海洋研究所
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P736.2

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