Chicxulub crater of the resulting megatsunami represented in a New Jersey quarry, a dense marine bone bed was found on the Cretaceous–Paleogene boundary containing a mixture of dead sea animals with little or no damage from scavengers or predators. Also related to this tsunami was a dense dinosaur bone bed on the Cretaceous–Paleogene boundary found in Patagonia. Chicxulub crater 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,
Chicxulub crater of bolide-weakened lithostratigraphy around the impact crater wall. More recent evidence suggests the actual crater is wide, and the 180 km ring is in fact an inner wall of it. Researchers at the University of Glasgow dated tektite samples from the impact as 66,038,000 ± 11,000 years old. The Chicxulub impactor had an estimated diameter of , and delivered an estimated energy of 21–921 billion Hiroshima A-bombs (between formula_1 and formula_2 joules, or 1.3–58 YJ). By contrast, the most powerful man-made explosive device ever detonated, the Tsar Bomba, had an energy of only 210 petajoules (formula_3 joules, the yield of