The researchers have discovered 2 craters in Jämtland. One is enormous, while the other is a tenth of the size of the first. “The 2 meteorite impacts occurred at the same time, 458 million years ago, and formed these two craters,” says Prof Erik Sturkell. They found one of the craters 20 kilometres south of Östersund in Brunsflo. This is an enormous crater, with a diameter of 7.5 kilometres. The smaller crater is located 16 kilometres from there, and has a diameter of 700 metres.
“Around 470 million years ago, 2 large asteroids collided in the asteroid belt between Mars and Jupiter, and many fragments were thrown off in new orbits. Many of these crashed on Earth, such as these two in Jämtland,” says Erik Sturkell.
Jämtland was under the sea at the time, with a water depth of 500m at th...
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