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What is the Chicxulub crater?

The Chicxulub crater ( /ˈtʃiːkʃʊluːb/; Mayan: [tʃʼikʃuluɓ]) 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 11 to 81 kilometres (6.8 to 50.3 miles) in diameter,...

What was the magnitude of the Chicxulub impact?

Other researchers find that the Chicxulub impact was magnitude 9 – 11 on the richter scale. The emission of dust and particles could have covered the entire surface of the Earth for several years, possibly a decade, creating a harsh environment for living things.

Is the “Chicxulub asteroid” also a member of the Baptistina family?

The authors, William F. Bottke, David Vokrouhlický, and David Nesvorný, argued that a collision in the asteroid belt 160 million years ago resulted in the Baptistina family of asteroids, the largest surviving member of which is 298 Baptistina. They proposed that the "Chicxulub asteroid" was also a member of this group.

Is the Chicxulub impactor a meteorite?

The impactor is widely agreed to be a bolide with a carbonaceous chondrite composition, based on geochemical evidence. In 1998 a 2.5 mm sized meteorite was described from the North Pacific from sediments spanning the Cretaceous-Paleogene boundary, that was suggested to represent a fragment of the Chicxulub impactor.

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