U.S. researchers have have documented how fast glaciers eroded the topography of the Coast Mountains of British Columbia, Canada.
University of Michigan, California Institute of Technology and Occidental College researchers used a new geochemical tool to quantify the rates and magnitude of glacial erosion across a major valley.
They found that glaciers radically altered the landscape around 1.8 million years ago -- about the time that Earth began to experience a number of ice ages.
Tag : USA ,Canada ,Nature.