Impact event Chicxulub Crater. This crater is centered on the Yucatán Peninsula of Mexico and was discovered by Tony Camargo and Glen Pentfield while working as geophysicists for the Mexican oil company PEMEX. What they reported as a circular feature later turned out to be a crater estimated to be in diameter. This convinced the vast majority of scientists that this extinction resulted from a point event that is most probably an extraterrestrial impact and not from increased volcanism and climate change (which would spread its main effect over a much longer time period). Although there is now general agreement that there
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