upheaval
nounThe process of being heaved upward.
nounAn instance of being so heaved.
nounA sudden, violent disruption or upset.
nounA raising of a part of the earth’s crust.
nounThe 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.
nounThe act of upheaving, or the state of being upheaved; esp., an elevation of a portion of the earth’s crust.
nounthe
a
a violent disturbance