(02-24-2016, 06:41 AM)gstanford Wrote: Water moves freely, ice doesn't! Go research Antarctic ice cover and crust depression! The oceans do sweet fuck all compression by comparison!
Just let me be a walking wiki encyclopedia here as to how glaciers carved out so many mountains (and yes, the ice sheet does move, although very slowly - across Greenland, discharging into the ocean and carving out countless fjords - you might want to look at this computerized simulation of Greenland:
https://upload.wikimedia.org/wikipedia/c..._sheet.ogv
Quote:Glaciers erode predominantly by three different processes: abrasion/scouring, plucking, and ice thrusting. In an abrasion process, debris in the basal ice scrapes along the bed, polishing and gouging the underlying rocks, similar to sandpaper on wood. Glaciers can also cause pieces of bedrock to crack off in the process of plucking. In ice thrusting, the glacier freezes to its bed, then as it surges forward, it moves large sheets of frozen sediment at the base along with the glacier. This method produced some of the many thousands of lake basins that dot the edge of the Canadian Shield. The erosion caused by glaciers worldwide erodes mountains so effectively that the term glacial buzz-saw has become widely used, which describes the limiting effect of glaciers on the height of mountain ranges.[21] As mountains grow higher, they generally allow for more glacial activity (especially in the accumulation zone above the glacial equilibrium line altitude),[22] which causes increased rates of erosion of the mountain, decreasing mass faster than isostatic rebound can add to the mountain.