Crater from UK’s biggest meteorite 1.2 billion years ago discovered in Scotland
10 Juin, 2019, 21:25 | Auteur: Therese Cote
Evidence for the meteorite strike was discovered in 2008 near the town of Ullapool, northwest Scotland, by scientists from the University of Oxford and the University of Aberdeen.
The scientists say that the thickness and extent of the debris deposited suggested the impact crater was made by a meteorite that was 1k wide.
In a paper published today in Journal of the Geological Society, a team led by Dr Ken Amor from the Department of Earth Sciences at Oxford University, show how they have identified the crater location 15-20km west of a remote part of the Scottish coastline.
The climate would have been considerably more arid and devoid of life - 1.2 billion years ago there were no plants on the land and life still remained in the oceans.
Dr Amor said: "The material excavated during a giant meteorite impact is rarely preserved on Earth, because it is rapidly eroded, so this is a really exciting discovery". The Guardian reports that ground zero for the hit is 650 feet under the water between Scotland's mainland and the Outer Hebrides island chain, where a 12-mile-wide crater should exist where the 1-mile-wide space object crashed into the ground at 38,000mph.
"It was purely by chance this one landed in an ancient rift valley where fresh sediment quickly covered the debris to preserve it".
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