Giant Meteorite Crater Bigger Than Paris Found Beneath Greenland's Ice Sheet

Източник: pixabay

A giant crater that was formed when a meteorite smashed into Earth, has been uncovered deep below Greenland's ice sheets, according to the Independent.co.uk

The 31-kilometre-wide cavity was discovered by an international team of scientists who believe it was caused by a "rare" meteorite that struck Earth as recently as 12,000 years ago.

Evidence suggests the crater was formed when a kilometre-wide iron meteorite penetrated seven kilometres into the Earth's crust.

Since then it has been buried under the thick ice of the Hiawatha Glacier in northwest Greenland.

It is the first time ever that an impact crater of any size has been found underneath one of Earth's continental ice sheets.

Scientists said the impact could have "drastically altered the climate and led to serious consequences for life on Earth at the time".

The study, led by researchers from the Centre for GeoGenetics at the Natural History Museum of Denmark and University of Copenhagen, was published in the journal Science Advances.

The crater was first discovered in July 2015 when researchers found a previously undetected "circular depression" under the glacier.

The team then inspected the glacier from the air using state-of-the-art ice radar measurements, revealing the hidden crater - covering an area bigger than Paris - in much more detail.

Detailed chemical analysis of sediment from a river that drains straight through the glacier followed, allowing researchers at Cardiff University to determine the type of object capable of causing such monumental destruction.

In particular, the experts looked for signs of platinum, palladium, rhodium and gold that would indicate the presence of a meteorite.

"When the results...

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