作为快速扩张洋中脊,东太平洋海隆岩浆作用研究对理解洋壳形成和演化有着重要意义。我们对获得于东太平洋海隆13°N附近的玄武岩进行了地球化学研究,包括:常量元素、微量和稀土元素、铀系同位素及矿物熔体包裹体研究。常、微量元素结果表明,这些玄武岩均属N型洋中脊玄武岩,并来 As a rapidly expanding mid-ocean ridge, the study on the magmatic activity of the East Pacific ridge is of great significance for understanding the formation and evolution of the oceanic crust. We conducted geochemical studies of basalts obtained near 13 ° N seamounts in the eastern Pacific Rift, including the study of major, trace and rare earth elements, uranium isotopes and mineral melt inclusions. Often, trace element results show that these basalts are N-type mid-oceanic basalts and come