本文研究了12°N以北的南海海区(以下简称南海)表层沉积物稀土元素的地球化学。我们选择了具有代表性的南海沉积物样品94个,用Jarrell-Ashl·160等离子体多道直读分光计15个稀土元素同时进行测定。统计结果表明,南海沉积物中稀土平均含量为152ppm,是L.A.Haskin等人所计算的沉积物稀土总量(150—300ppm)的下限。统结计果还表明,随着沉积物中粘土加粉砂含量的增加,稀土含量一般也随之增加。 In this paper, the geochemistry of rare earth elements in the surface sediments of the South China Sea north of 12 ° N (hereinafter referred to as the South China Sea) was studied. We selected 94 representative samples from the South China Sea sediments and measured 15 rare earth elements simultaneously using a Jarrell-Ashl. 160 plasma multi-channel direct-reading spectrometer. The statistical results show that the average rare earth content in the sediments of the South China Sea is 152ppm, which is the lower limit of the total amount of rare earth deposits (150-300ppm) calculated by L. A. Haskin et al. Results also showed that with the increase of clay and silt content in sediments, the content of rare earth generally increases.