The high plateaus consist of great blocks of the earth's crust which are separated from each other by fault-lines, and which have been uplifted to different heights.
Erosion has developed deep and sometimes broad valleys along the fault-lines and elsewhere, so that many of the blocks and portions of blocks are isolated from their neighbours.
subduction fault lines.
It is hoped that the seismic data will also allow us to distinguish between submarine volcanic eruptions and earthquakes occurring along subduction fault lines.
Dry steam - Power plants around the world take the steam that pours out of fault lines and fractures in the ground and uses it to power turbines to generate energy.