Site of impact that wiped out the dinosaurs

Site of impact that wiped out the dinosaurs

Fig. 13.11 . The long-sought site of the scar left by a killer asteroid has been found near Chicxulub (filled circle), a small village at the tip of the Yucatán Peninsula. Material from the submerged crater has been dated at about 65 million years ago, coinciding with a blast that triggered the eradication of most life on Earth. Thick sedimentary deposits laid down 65 million years ago in Haiti (big open circle) contain exceptionally large amounts of iridium, shocked quartz and glassy debris that are thought to be part of the impact across the Caribbean, almost two thousand kilometers away. The small open circles mark the sites of marine wave deposits associated with the same impact. [Adapted from Alan R. Hildebrand and William V. Boynton, Natural History 6, 47-53 (1991).]

Copyright 2010, Professor Kenneth R. Lang, Tufts University