News Archaeology

Lake-Bottom Bounty: Some Arctic sediments didn’t erode during recent ice ages

By Sid Perkins

- More than 2 years ago

The kilometers-thick ice sheets that smothered northeastern Canada and scoured the landscape there during recent ice ages left sediments intact in some locales. This surprising finding could prove a boon to climate researchers.

ON THE EDGE. At Lake CF8 (arrow) and a handful of other sites (red dots), sediments weren’t scraped away by the ice sheet that smothered Canada during the latest ice age (maximum extent denoted by thick black line).