Established in 2020 Wednesday, October 27, 2021


Megaripples may be evidence of giant tsunami resulting from Chicxulub impact
Artistic rendition of the Chicxulub impactor striking ancient Earth.



LAFAYETTE, LA.- A pair of geophysicists from the University of Louisiana at Lafayette working with two independent researchers has found what they believe might be evidence of a massive tsunami created by the Chicxulub asteroid impact. In their paper published in the journal Earth and Planetary Science Letters, the group describes their study of seismic data for a site in Louisiana and what they found.

Most scientists agree that approximately 66 million years ago, a large asteroid struck the Earth near what is now the Yucatan peninsula. It is also believed that the impact was so violent that it covered the globe with dust for several years, leading to the demise of the dinosaurs. Some in the field have suggested that the collision also resulted in the creation of a massive tsunami. In this new effort, the researchers reasoned that this tsunami would have made its way across what is now the Gulf of Mexico to the shores of North America. They suggest such a massive collision would have created a wave up to a mile high as it made its way onshore. If so, they further reasoned, there should be evidence of unique geographical formations—the kind that are known to be created by modern tsunamis.

To search for evidence of possible formations, the researchers studied the terrain at a place where the tsunami would have struck and then chose what they believed to be a good place to look more closely: inland Louisiana. To find the evidence they were looking for, the team obtained seismic data from a petroleum firm that allowed them to look at soil at depths up to 1,500 meters below the surface. They found evidence of what they describe as megaripples—huge fossilized ripples that would have been created by a massive influx of water, which then receded. The researchers then studied the ripples to learn more about the direction of the flow of water that had created them, and found they pointed straight to the Chicxulub asteroid impact site. The researchers suggest their find adds yet another piece to the emerging picture of the Chicxulub asteroid impact event.







Today's News

July 17, 2021

Red blood cell 'traffic' contributes to changes in brain oxygenation

CUHK develops brain method to forecast infants' future language development

Baby stars form pinwheel fireworks in nearby galaxies

Study: Let's replace 'ancestry' in forensics with something more accurate

One in two Covid hospital cases develop complications: study

Megaripples may be evidence of giant tsunami resulting from Chicxulub impact

New spray could someday help heal damage after a heart attack

Repairing hearts with deadly spider venom

Juno tunes into radio noise triggered by Jupiter's volcanic moon Io

Swarm of autonomous tiny drones can localize gas leaks

Antibiotics in early life could affect brain development

Scientists find way to navigate a heavy uphill climb

First 3D simulation of rat's complete whisker system acts as a tactile 'camera'

Breakthrough into leading cause of blindness

Bioengineering discovery paves way for improved production of bio-based goods using Baker's yeast

Common medication used to reduce cholesterol levels may reduce COVID-19 severity

New method makes vital fertilizer element in a more sustainable way

Species of algae with three sexes that all mate in pairs identified in Japanese river



 


Editor & Publisher: Jose Villarreal
Art Director: Juan José Sepúlveda Ramírez



Tell a Friend
Dear User, please complete the form below in order to recommend the ResearchNews newsletter to someone you know.
Please complete all fields marked *.
Sending Mail
Sending Successful