Geochemistry at DSDP Leg 70 Holes

The hydrothermal mounds on the southern flank of the Galapagos Spreading Center are characterized by the following main features: 1) They are located over a young basement (0.5...加拉帕戈斯扩张中心（Galapagos Spreading Center）南翼的热液丘（hydrothermal mounds）具有以下主要特征：1）其赋存于年代为0.5……的年轻基底（young basement）之上。