【摘要】 研究了东太平洋海盆沉积物间隙水中元素的变化趋势及组合特征。结果表明，经过成岩改造的间隙水化学组成相对于海水发生了较大的变化。其中Ｋ、Ｓｒ、Ｂ趋于亏损，Ｃａ、Ｍｇ、Ｌｉ则表现出亏损和富集两种不同的变化趋势。Ｓｉ、Ｂａ、Ｒｂ富集，Ｍｎ、Ｆｅ、Ｚｎ、Ｐｂ、Ｃｕ、Ｎｉ、Ｃｏ则高度富集。Ｒ型聚类分析结果表明，间隙水中金属元素可分成Ｋ、Ｓｒ、Ｍｇ、Ｌｉ、Ｃａ和Ｍｎ、Ｆｅ、Ｒｂ、Ｃｏ，Ｚｎ、Ｃｕ、Ｎｉ、Ｐｂ两组。影响间隙水元素组成变化的主要因素有火山物质的海解作用，硅质生物组分和岩成碎屑组分的成岩作用及有机物的分解作用等。更多还原

【Abstract】 The evolution tendency and assemblages of elements in interstitial water were studied based on chemical analysis of the sediment and the interstitial water samples collected from eastern Pacific Basin during the HY4-871 and-881 cruises.Compared with oceanic water,K,Sr and B in interstitial water are depleted,and Si,Ba and Rb are enriched,while Ca,Mg and Li show two opposite tendencies,either depletion or enrichment.Mn,Fe,Pb,Zn,Cu,Ni and Co are extremely enriched in interstitial water.Metal elements in interstitial water may be divided into two groups by R-cluster analysis:(1) K,Sr,Mg,Li and Ca,and (2) Mn,Fe,Rb,Co,Zn,Cu,Ni and Pb.The factors controlling the compositions of interstitial water include the halmyrolysis of volcanogenous materials,the diagenesis of siliceous organism and lithologic components and the decomposition of organic matter in sediments.更多还原