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长江和黄河以及韩国的Keum和Yeongsan江,具有不同的微量元素地球化学特征。韩国河流沉积物中微量元素含量多介于长江和黄河之间,以Li、Rb和Th较高为特征,粒级效应明显。长江富铁族和铜族元素,黄河则Sr最高,其他元素均低于其他3条河流;韩国河流中Sr主要赋存于长石中,而长江和黄河中则主要赋存于碳酸盐矿物中。根据沉积物中元素的赋存相态及含量,我们认为Ti、Cr/Th、Ti/Nb和Zr/Nb等可以作为判别西太平洋边缘海,尤其是黄海中长江、黄河与韩国河流物质贡献的可靠地球化学参数,但在运用中必须注意粒级效应影响。
The Yangtze and Yellow Rivers and the Keum and Yeongsan Rivers in Korea have different trace element geochemical characteristics. Trace elements in the sediments of Korean rivers are mostly between the Yangtze River and the Yellow River, characterized by higher Li, Rb and Th, with obvious grain-size effect. The Yangtze River is rich in iron and copper elements, the Yellow River is the highest Sr, the other elements are lower than the other three rivers; South Korean rivers Sr mainly occurs in feldspar, while the Yangtze River and the Yellow River are mainly in carbonate minerals in. According to the phases and contents of the elements in the sediments, we think Ti, Cr / Th, Ti / Nb and Zr / Nb can be used to judge the contribution of the sediments in the marginal seas of the western Pacific, especially the Yellow River, the Yellow River and the South Korean rivers Reliable geochemical parameters, but in the application must pay attention to grain-level effects.