posted on Oct, 21 2005 @ 08:40 PM
When there are ice sheets across the faces of continents, like in the last ice age, the weight of the ice pushes the land down. When the ice
dissapears, as in when the ice age is over, then the land re-rises, its called isostatic rebound. This causes earthquakes that are not associated
with normal tectonic processes.
However, I doubt that the ice on the himalays is enough to do this, and certainly not enough of that ice has been removed in the first place.