Most of Greenland ice melted to bedrock in recent geologic past, says study
Wednesday, December 7, 2016 - 14:31
in Earth & Climate
Scientists have found evidence in a chunk of bedrock drilled from nearly two miles below the summit of the Greenland ice sheet that the sheet nearly disappeared for an extended time in the last million years or so. The finding casts doubt on assumptions that Greenland has been relatively stable during the recent geological past, and implies that global warming could tip it into decline more precipitously than previously thought.