2016-03-30, 01:30
Unravelling a geological mystery using lasers from space
Drumlins and megaridges are all part of a single family of landforms formed by erosion, new research concludes. Shaped like an upturned boat, drumlin hills are found clustered together in their hundreds and thousands in distinct fields called swarms. They are the most common landform across large areas of northern North America and Europe, marking the footprint of great sheets that formed during past ice ages.
http://feeds.sciencedaily.com/~r/science...112849.htm
Drumlins and megaridges are all part of a single family of landforms formed by erosion, new research concludes. Shaped like an upturned boat, drumlin hills are found clustered together in their hundreds and thousands in distinct fields called swarms. They are the most common landform across large areas of northern North America and Europe, marking the footprint of great sheets that formed during past ice ages.
http://feeds.sciencedaily.com/~r/science...112849.htm