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
Minnaert (crater) a central ridge, it may now be buried. By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Minnaert. Minnaert (crater) Minnaert is a large lunar impact crater that is located on the far side of the Moon, deep in the southern hemisphere. It is partly overlain along the southeastern side by the larger and younger crater Antoniadi. To the west-northwest lies Lyman. Nearly half the crater is overlain by the rim, outer rampart, and ejecta from Antoniadi. The remaining rim is worn and eroded, with