The Chicxulub crater is a very big crater. Some scientists believe that the Chicxulub crater was made by the meteor that caused the extinction of the dinosaurs, and many other animals. It is near the Yucatán Peninsula in Mexico.
The bolide which formed the crater was at least 10 km (6 mi) in diameter. Evidence for the impact origin of the crater includes shocked quartz, a gravity anomaly, and tektites in surrounding areas. The age of the rocks and isotope analysis show that this impact structure dates from the end of the Cretaceous period, roughly 65 million years ago. The impact associated with the crater is implicated in causing the extinction of the dinosaurs.
In March 2010, following analysis of the available evidence covering 20 years' worth of data in the fields of palaeontology, geochemistry, climate modelling, geophysics and sedimentology, 41 international experts from 33 institutions reviewed available evidence and concluded that the impact at Chicxulub triggered the mass extinctions during K-T boundary including those of dinosaurs.
References[change | change source]
- Earth Impact Data Base
- Bottke, W.F.; Vokrouhlicky, D., Nesvorny, D. (September 2007). "An asteroid breakup 160 Myr ago as the probable source of the K/T impactor" (PDF). Nature 449 (7158): 23–25. doi:10.1038/nature06070. PMID 17805288. http://www.boulder.swri.edu/~bottke/Reprints/Bottke_2007_Nature_449_48_Baptistina_KT.pdf. Retrieved 2007-10-03.
- Schulte, Peter et al. (5 March 2010). "The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary". Science (AAAS) 327 (5970): 1214–1218. doi:10.1126/science.1177265. ISSN 1095-9203. PMID 20203042. http://www.sciencemag.org/cgi/content/abstract/327/5970/1214. Retrieved 5 March 2010.
- *Rincon, Paul (2010-03-04). "Dinosaur extinction link to crater confirmed". BBC. Retrieved 2010-03-05.