World’s oldest meteor impact crater discovered in Greenland

Scientists have discovered 100 kilometre wide Earth’s oldest meteorite crater in Greenland, which they believe to have formed 3 billion year ago.The crater is found near the town of Maniitsoq in Greenland. The crater was found by a team of geologists led by Adam A. Garde, senior research scientist at GEUS funded by GEUS and the Danish ‘Carlsbergfondet’ (Carlsberg Foundation). The team was following a detailed programme of fieldwork.

The original asteroid would have been about 18 miles across. The crater measures about 100 kilometers but before it eroded, it was likely more than 500 km wide. The previously oldest known crater on Earth formed two billion years ago. On earth, the evidences of most of the craters have been eroded away or covered by younger rocks.