对现有海洋地球物理与地质资料的最基本的重要解释之一,就是逐步接近断裂带的岩浆预测量下降。在此意义上,“岩浆预测量”(Magma budgct)这一术语被用来描述每个扩张单元的扩张中心下供给岩浆室或通道的岩浆量。岩浆量的变化可能是地幔部分熔融的程度及(或)熔液抽吸效率的不同造成的。据认 One of the most fundamental important explanations of existing marine geophysical and geological data is the drop in magmatic predictions approaching the fault zone. In this sense, the term “Magma budgct” is used to describe the amount of magma supplied to a magma chamber or channel at the center of expansion of each expansion unit. Changes in magma volume may be due to the degree of partial melting of the mantle and / or differences in melt draw efficiency. It is admitted