Antarctica, Australia, and the land indicated by the islands of the Pacific broke away on the south and east and have drifted far away since that day. 
Rose out of Pacific depths. Europe and Africa began to rise out of the Pacific depths along with those masses now called Australia, North and South America, and the continent of Antarctica, while the bed of the Pacific Ocean engaged in a further compensatory sinking adjustment. 
The vast polar ice sheets like the one in Antartica began to form 100,000 years ago and as long as the polar regions continue to be covered with ice, it is hardly possible for another glacial age to occur. 
See also: UB 61:2.3; UB 61:5.3.