[muawiyah]

Just doing a quick look at the current view of the sea level rise situation and it looks like 6 major incidents over 6,000 years did quite a trick.

Now about Storegga-like events ~ those involve physical displacement, by a landslide, earth-fault movement, etc.. What I'm concerned with is quite a bit different. That is the sudden break of an ice dam that releases huge amounts of water.

Glacial Lake Agassiz has been studied extensively. Now, scale that up to something the size of Antarctica. Let an ice wall form at the boundary of the once far larger ice sheet as it melts at the end of the period of maximum glaciation.

The circum polar cyclone will take care of keeping the water draining to the lowlands at the boundary between sea ice and land COLD ENOUGH TO REFREEZE to form that wall.

Let the wall build up to some unsustainable height and there ought to be a sudden break, just like with Glacial Lake Agassiz' ice dam.

Pour out a couple of miles of melted ice sheet, with vast quantities of ice into the ocean surrounding Antarctica and you would have the largest tsunami possible on the planet.

There'd be no more rock debris from this sort of event than you'd get from any flow of just water.

That would be quite enough to destroy virtually all of the cheetahs but a mother with cubs hidden in a cave up a mountain side somewhere in the Kalahari! Their adaptation to exceedingly flat alluvial plains would have killed all but that cat! Something similar would happen on all of the coastlines of every South-facing piece of continental landmass.

I'd like to note here that due to the fact ocean levels were quite a bit lower at that time the worst damage would be in areas well offshore.

[Gondring]

Now about Storegga-like events ~ those involve physical displacement, by a landslide, earth-fault movement, etc.. What I'm concerned with is quite a bit different. That is the sudden break of an ice dam that releases huge amounts of water.

Okay, because even in a dry-->wet base situation with floatation, you wouldn't get enough to create what you were suggesting!

Glacial Lake Agassiz has been studied extensively. Now, scale that up to something the size of Antarctica. Let an ice wall form at the boundary of the once far larger ice sheet as it melts at the end of the period of maximum glaciation.

I don't see your GLOF mechanism. Are you suggesting a MLD or Jökulhlaup?

Agassiz was cratonic. Antarctica is an entirely different story.

Also, if you have excess melting, how would you get the thickness required on such a small continent?