upheaval

noun

The process of being heaved upward.

noun

An instance of being so heaved.

noun

A sudden, violent disruption or upset.

noun

A raising of a part of the earth’s crust.

noun

The act of upheaving, or the state of being upheaved; a heaving or lifting up; specifically, in geology, a disturbance of a part of the earth’s crust, having as one of its results that certain areas occupy a higher position with reference to adjacent areas than they did before the disturbance took place.

noun

The act of upheaving, or the state of being upheaved; esp., an elevation of a portion of the earth’s crust.

noun

the process of being heaved upward, especially the raising of part of the earth‘s crust

noun

a sudden violent upset, disruption or convulsion

noun

a violent disturbance