Dinosaurs were potentially killed off by more than just one asteroid

The newly discovered Nadir crater beneath the North Atlantic Ocean may have contributed to the dinosaurs' extinction, hitting Earth alongside Chicxulub.

Published Aug 19, 2022 4:32 AM CDT   |   Updated Sun, Sep 11 2022 10:25 AM CDT
1 minute & 30 seconds read time

A study on the newly discovered crater titled "The Nadir Crater offshore West Africa: A candidate Cretaceous-Paleogene impact structure" has been published in the journal Science Advances.

Dinosaurs were potentially killed off by more than just one asteroid 01 | TweakTown.com

Researchers from the University of Arizona have discovered an impact crater at the bottom of the North Atlantic Ocean, which indicates additional asteroids may have struck the Earth during the extinction event that marked the end of the dinosaurs. Named the Nadir Crater, it is thought to have been created by an asteroid striking Earth around the same time as when the Chicxulub asteroid impacted Earth off the coast of what is now Yucatan, Mexico, causing the Cretaceous-Paleogene extinction event.

The Nadir Crater was found buried beneath up to 1,300 feet (396 meters) of seabed roughly 250 miles (402 kilometers) off the coast of Guinea, West Africa, and spans over 5 miles (8 kilometers) in diameter. The crater was found using scientific instruments that can see deep into Earth, and if confirmed, the crater will be added to the list of fewer than 20 confirmed impact craters in the ocean on Earth.

The asteroid that produced the crater was likely either part of a parent asteroid that broke apart or part of a swarm of asteroids from around that period. Simulations indicate that a 1,300-foot-wide asteroid produced the crater after landing in 1,600 to 2,600 feet (487.7 to 731.5 meters) of water.

"This would have generated a tsunami over 3,000 feet high, as well as an earthquake of more than magnitude 6.5. Although it is a lot smaller than the global cataclysm of the Chicxulub impact, Nadir will have contributed significantly to the local devastation. And if we have found one 'sibling' to Chicxulub, it opens the question: Are there others?" said Veronica Bray, a research scientist in the University of Arizona Lunar and Planetary Laboratory.

You can read more from the study here.

Buy at Amazon

The Last Days of the Dinosaurs

TodayYesterday7 days ago30 days ago
$20.99$20.99$23.69
* Prices last scanned on 10/1/2022 at 4:09 am CDT - prices may not be accurate, click links above for the latest price. We may earn an affiliate commission.
NEWS SOURCES:phys.org, doi.org

Adam grew up watching his dad play Turok 2 and Age of Empires on a PC in his computer room, and learned a love for video games through him. Adam was always working with computers, which helped build his natural affinity for working with them, leading to him building his own at 14, after taking apart and tinkering with other old computers and tech lying around. Adam has always been very interested in STEM subjects, and is always trying to learn more about the world and the way it works.

Newsletter Subscription

    Related Tags

    Newsletter Subscription
    Latest News
    View More News
    Latest Reviews
    View More Reviews
    Latest Articles
    View More Articles
    Partner Content
    Advertise With Us