Cretaceous–Paleogene boundary had been that no documented crater matched the event. This was not a lethal blow to the theory; while the crater resulting from the impact would have been larger than in diameter, Earth's geological processes hide or destroy craters over time. The Chicxulub crater (; ) is an impact crater buried underneath the Yucatán Peninsula in Mexico. Its center is located near the town of Chicxulub, after which the crater is named. It was formed by a large asteroid or comet about in diameter, the Chicxulub impactor, striking the Earth. The date of the impact coincides precisely with the Cretaceous–Paleogene
Burckle Crater Burckle Crater Burckle Crater is an undersea feature hypothesized to be an impact crater by the Holocene Impact Working Group. They considered that it likely was formed by a very-large-scale and relatively recent (c. 3000–2800 BCE) comet or meteorite impact event. It is estimated to be about 30 km (18 mi) in diameter, about 25 times wider than Arizona's Meteor Crater. It is east of Madagascar and west of Western Australia in the southern Indian ocean adjacent to the SW Indian Ocean Ridge. Its position was determined in 2006 by the same group using evidence of its existence from prehistoric