The Nadir Crater
I’m probably the last to know,
but I just found out about the Nadir Crater (Figs 1,2), about 66mya and offshore from West Africa “with radial thrusts at the periphery of the uplift suggesting a low-angle impact from the East” according to Nicholson et al 2024.
This is interesting – puts a different spin on everything ‘asteroid’.
“The similarity in age of the crater with the 200 km Chicxulub crater in Mexico has led to the suggestion that the end-Cretaceous extinction event may have been associated with more than one impact—either break-up of a parent asteroid in near-Earth orbit or as part of a longer-lived (~1–2 My) temporal cluster of impacts.”
“There are currently only ~200 confirmed impact craters in the terrestrial record4,5,6,7. Of these, the majority are complex craters, which display a central uplift, collapsed crater rim and annular moat below the crater floor.”
References
Nicholson U et al (6 co-authors) 2024. 3D anatomy of the Cretaceous-Palaeogene age Nadir Crater. Communications Earth & Environment 5:547.
Source: https://pterosaurheresies.wordpress.com/2026/08/21/the-nadir-crater/
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