noun
diastrophism; crustal movement
Geological term for deformation and movement of the earth's crust. Used in scientific and news contexts.
地殻変動によって山脈が形成された。
Mountain ranges were formed by crustal movement.
noun
seismic shift; upheaval; earthshaking change
Figurative extension: dramatic, fundamental change in politics, society, or an organization, likened to a geological shift.
選挙結果は政界に地殻変動をもたらした。
The election results brought about a seismic shift in the political world.