Chicxulub is identified as the K–Pg impact crater

Assembled from 20 blocks · 1 evidence · 9 related

1. Story
2. Hildebrand and colleagues published the case that a buried circular structure beneath the northern Yucatán Peninsula is an impact crater of Cretaceous–Palaeogene age, drawing together the geophysical anomaly mapped by Pemex geophysicists in the late 1970s, drill-core material, shocked quartz and the distribution of boundary deposits around the Gulf of Mexico. The gap between the 1980 hypothesis and the 1991 identification is the most instructive part of the story: for eleven years the impact hypothesis rested on a global chemical signature with no crater, and the crater when found had already been drilled by an oil company that had interpreted it as a volcanic feature.
3. Knowledge
4. The Cretaceous–Palaeogene iridium anomaly
5. Chicxulub impact crater, Yucatán
6. Chicxulub is identified as the K–Pg impact crater
7. Connections
8. Chicxulub impact crater, Yucatán
9. The Cretaceous–Palaeogene iridium anomaly
10. The Cretaceous–Palaeogene mass extinction
11. The K–Pg boundary is dated to 66.043 ± 0.043 Ma
12. Chicxulub is identified as the K–Pg impact crater
13. IODP–ICDP Expedition 364 drills the Chicxulub peak ring
14. The Cretaceous–Palaeogene mass extinction
15. Bottaccione Gorge, Gubbio
16. The Cretaceous–Palaeogene mass extinction
17. The Alvarez impact hypothesis is published
18. Chicxulub is identified as the K–Pg impact crater
19. Evidence
20. Supports the identification of the buried Yucatán structure as an impact crater of Cretaceous–Palaeogene age. V55 verification basis: this session had no network access to any source — WebFetch was egress-blocked and the WebSearch budget was exhausted — so the cited work was not retrieved and its pagination was not re-checked. Volume and page range are quoted from standing knowledge and were not re-checked.