Greenland ice sheet hides huge ‘impact crater’

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According to (This article and its images were originally posted on BBC News – Science & Environment November 14, 2018 at 03:42PM.)

(Cover Image) Image copyright NATURAL HISTORY MUSEUM OF DENMARK

Image caption-Space view: The semi-circular margin of the ice sheet traces the outline of the crater

What looks to be a large impact crater has been identified beneath the Greenland ice sheet.

The 31km-wide depression came to light when scientists examined radar images of the island’s bedrock.

Investigations suggest the feature was probably dug out by a 1.5km-wide iron asteroid sometime between about 12,000 and three million years ago.

But without drilling through nearly 1km of ice to sample the bed directly, scientists can’t be more specific.

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This article and images were originally posted on [BBC News – Science & Environment] November 14, 2018 at 03:42PM. Credit to the original author and BBC News – Science & Environment | ESIST.T>G>S Recommended Articles Of The Day.

 

 

 

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