rifting
n. 裂谷作用；断裂作用
v. 断裂（rift 的现在分词）；开裂
例句
The magma is probably generated by rifting.
岩浆的形成可能与裂谷作用有关。
Rifting basins and pull-apart basins were formed.
裂谷盆地和拉分盆地形成。
Both Etna and Tharsis show similar patterns of rifting running through the body of the volcano.
不管是埃特纳火山还是塔西斯高地，贯穿火山山体的裂隙也都显示出了相似的格局。
