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
Flaugergues (crater) Impact craters generally have a rim with ejecta around them, in contrast volcanic craters usually do not have a rim or ejecta deposits. Sometimes craters expose layers that were buried. Rocks from deep underground are tossed onto the surface. Hence, craters can show us what lies deep under the surface. Flaugergues (crater) Flaugergues is a crater in the Sinus Sabaeus quadrangle on Mars at 17° south latitude and 340.8° west longitude. It is about 245 km in diameter. It was named after Honore Flaugergues, a French astronomer (1755-1835). Northeast of Flaugergues is a valley named Mosa Vallis and further northwest