Under the influence of the subduction, the source mantle of the potassic lamprophyres has a high geothermal gradient and oxygen fugacity.
由于这种作用的影响，使钾质煌斑岩的源区地幔处于地温梯度高、氧逸度高的不稳定状态。
The pressure gradient of the lithosphere is a key to explain various geological processes, and it changes complicatedly with time and space as the geothermal gradient does.
岩石圈中的地压梯度是一个极为重要的参数，直接影响着各种地质作用的解释。
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