东海北部表层沉积物中碳酸盐的形成作用
FORMATION OF CARBONATE IN THE SURFACE SEDIMENTS IN THE NORTHERN PART OF THE EAST CHINA SEA
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摘要: 沉积物中的碳酸盐组分在形成条件和影响因素等方面都具有特殊性,能反映所在环境和相的特征。东海表层沉积物中有较丰富的碳酸盐产出,最高含量达样品总重的51.2%,或占总体积的70%。这些碳酸盐的成因类型、矿物成分、分布规律对了解东海海域的现代沉积作用及控制因素有重要意义,并能对产于类似环境的古钙质沉积的研究起借鉴作用。眭良仁等曾对东海碳酸盐作过研究,本文将对黄海南部至东海北部陆架区(30°—35°N,122°—128°E)表层沉积中的碳酸盐组分及其形成作用作一论述。Abstract: There exists abundant carbonate in theIts maximum content of the whole volume.accounts for 51.2 % ofsurface sediments of the East China Sea.the whole weight of the samples or 70% T his article deals contents in the four with some problems about carbonate, such parts(bulk sam ple,coarse-m edian-sand frac-of as the variation tion, fine-sand one and silt-mud one),logical form and the principal factors the distributive pattern,the mineral and bio-affecting its formation.
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[1] 冯增昭等,1984,沉积学报,2卷1期。 [2] 睦良仁、黄德佩,1983,沉积学报1卷1期。 [3] 朱而勤,1983,东海北部的钙质结核,中国科学(B), 26: 90 [4] 朱而勤,1985,黄、东海钙质结核的特征及成因,海洋学报7卷3期。 [5] Berner, R.A.,(1968),Science, 159, 195-197. -

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