The death of the dinosaurs was caused by a double Armageddon

Scientists have proven that the Chicxulub crater was formed by the fall of an asteroid that killed most of the dinosaurs. But, as it turned out, it was not the only one responsible for the mass extinction of giant reptiles’ extinction. The deadly asteroid had a “younger sibling”.

The curved relief on the sea floor off the coast of West Africa was likely formed by the fall of a 400-meter asteroid around the same time as the impact that wiped out the dinosaurs. Illustration: SciTechDaily

 

Off the coast of West Africa, hundreds of meters below the seabed, scientists have discovered what may be the remains of an 8.5-kilometer-diameter impact crater they named Nadir. The team estimates that the crater was formed 66 million years ago, around the same time that the “dinosaur killer” asteroid Chicxulub crashed into the region of modern-day Mexico. If this is confirmed, it could mean that the dinosaurs died as a result of a double impact of asteroids, reports ScienceNews.

Almost 200 impact craters have been discovered on Earth. The vast majority of them are on land. According to planetary scientist Veronica Bray University of Arizona (Tucson), this is because impact craters in the sea are gradually buried under sediment, making the Nadir structure a valuable scientific find.

Using seismic waves transmitted through the seafloor, researchers constructed this artificial color image of the buried Nadir structure. Photo: Science Advances

 

Features of an impact crater

Geologist J. Nicholson of Heriot-Watt University in Edinburgh noticed the pattern while analyzing data collected by seismic waves transmitted underground to identify physical structures off the coast of Guinea. At a depth of a kilometer, the scientist saw a cup-shaped structure with a pronounced central peak, a feature that resembled an impact crater. Based on the dimensions of the structure, the researchers estimated that the asteroid was about 400 meters wide when it fell. According to researchers, the impact of the asteroid shook the Earth with a magnitude 7 earthquake and caused a tsunami hundreds of meters high.

llustration of the formation of the Chicxulub crater after it fell to Earth 66 million years ago

I

“The fall of a 400-meter asteroid was much less destructive than the impact of the Chicxulub asteroid, which was about 10 kilometers wide. It is unlikely that the fall of one asteroid would have caused global consequences. But together they definitely accelerated the extinction of dinosaurs,” says Michael Rampino, a geologist from New York University.

Bray and her colleagues are currently negotiating funding to collect samples from the crater, with plans to drill in 2024.

We will remind you that recently the Earth was threatened by a collision with an asteroid that flew at a distance of only 3000 km from its surface.

Related Posts

Earth Is Passing Through A Dark Matter “Hurricane” Right Now

Scientists have suggested that a dark matter “hurricane” might be making its way past the Sun, and it could be detectable here on Earth. Published in Physical…

Fully Transparent Solar Cell Could Make Every Window In Your House A Power Source

A Michigan State University research team has at last made a truly transparent solar panel — a innovation that could soon usher in a world where windows,…

Scientists Found The Building Blocks Of DNA And RNA In Meteorites. Here’s What That Means

It’s been a long-held theory that many of the essential ingredients needed for the creation of life on Earth came from outer space. The source behind these…

NASA Releases Stunning 4K Video of Apollo 13 Views of the Moon, Ending All Conspiracy Theories

NASA has developed a stunning view of the Moon using data from the Lunar Reconnaissance Orbiter (LRO) and combined with the views recorded by Apollo 13 astronauts…

The Driest Place On Earth Has Seen No Rain For 2 Million Years

The driest region on Earth is Antarctica’s Dry Valleys, which haven’t seen rain in almost 2 million years. This region receives no precipitation and covers an area…

Don’t Miss Rare Alignments Of 5 Planets For First Time in 100 Years

This month, the planets will align for an event that hasn’t occurred in a century. According to Sky and Telescope, five planets visible to the naked eye…