论文部分内容阅读
锶（Ｓｒ）是碳酸盐沉积物及软体动物介壳中的重要微量元素之一，Ｓｒ含量和Ｓｒ／Ｃａ比值的变化明显受沉积相的控制。因此，锶作为地球化学指标具有一定的环境意义。通过对南海北部莺歌海盆地莺６井上新统双壳类贝壳中的Ｓｒ含量和Ｓｒ／Ｃａ比值的变化与环境、成岩作用关系的研究，发现莺歌海盆地上新世沉积环境为上陆坡→潮下带→潮间带，所得结论与双壳类的生态环境和地层沉积相的综合分析结果一致。
Strontium (Sr) is one of the important trace elements in carbonate sediments and mollusk shell. The changes of Sr content and Sr / Ca ratio are obviously controlled by sedimentary facies. Therefore, strontium as a geochemical indicator has some environmental significance. Based on the study on the relationship between Sr content and Sr / Ca ratio in the Upper Pleistocene bivalves of Ying 6 in the Yinggehai Basin, northern South China Sea, and the relationship between environment and diagenesis, it is found that the Pliocene depositional environment in Yinggehai Basin is upper slope → Tidal zone → intertidal zone, the conclusion is consistent with the comprehensive analysis of the ecological environment and sedimentary facies of bivalves.