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黄海辐射沙洲沉积物地球化学特征及其环境意义
陈平平¹, 葛晨东¹, 殷勇¹, 邹欣庆¹
南京大学海岸与海岛开发教育部重点实验室

摘要:

对黄海辐射沙洲烂沙洋水道区域的3个钻孔共81个沉积物样品进行了微量、常量元素分析和¹⁴C测年分析,化学元素质量分数的变化与当时沉积环境的变化相对应。突发事件(如风暴潮)的发生不但在沉积物的岩性上有所体现,而且在微量元素质量分数的变化上也有很明显的体现。微量元素Zr可作为沉积能量变化的地化指示剂,潮汐通道北部的西太阳沙区域的沉积动力环境在4000a以前是较弱的。潮流通道的上段沉积物是来自水深较浅的区域,由于潮流和波浪的作用使其能够保持稳定的水深。

关键词: 辐射沙洲微量元素环境变化沉积能量

DOI：

分类号:

基金项目:国家自然科学基金资助项目(40371048)

Geoche mical characteristics of radial submarine sand ridges,Yellow Sea,China

Abstract:

Major and minor chemical elementals were measured in the samples from 3 cores in radial submarine sand ridges of Yellow Sea. The age of the samples were measured by ¹⁴C. Variations in elements reflect the change of sediment environment. Enrichement of Zr indicates a higher depositional energy environment. 4000 years ago, depositional energy in Xitaiyangsha wea smaller.

Key words: radial submarine sand ridges minor elements sediment environment

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