Monday , November 30 2020

Scientists doubt the role of asteroid when they disappear dinosaurs

A study by scientists at the University of California confirms that the asteroid effect on the planet recovers "massive volcanic explosions" in the territory. This happened where India is now far from the place where it hit the Caribbean Sea.

However, researchers believe that this information "does not explain the extent to which both disasters – the impact and the obstacles – have contributed to the great eradication that killed the dinosaurs and many other forms of life. "

Right dates of volcanic explosions

The study comforts light on the massive lagoons that have risen from time to time through the history of the Earth. It also explains how these phenomena have affected the atmosphere and have changed the life course on the planet.

The analysis detailed the more detailed dates of the intense volcanic cuts in India. These coincided with global dysfunction at the end of the Cretaceous Period.

The sequence of eruptions over millions of years gave lava flows at a distance of at least 500 kilometers along that continent.

"We will say, quite confident, that the wars have occurred within 50,000 years, and perhaps 30,000 years, of the effect, which means they have synchronized," he noted lead author Paul Renne.

"That is an important authentication of the assumption that the effect of lava flows has been refurbished," he added.

Reboot the reason for the extinction

The new dates also confirm previous estimates that lava flow lasts for about a million years. But they're surprising: three quarters of the laurel came after the effect.

If most of the Deccan stairs in western and western India had exploded before the effect, the emitted emits during the explosions could be global warming case in the last 400,000 years of the Cretaceous. It was at that time when the temperature was about 8 degrees Celsius (14.4 degrees Fahrenheit).

However, according to the authors, should the majority of Deccan Strawberry lavah have risen after the effect, this situation must be considered "again."

"This changes our position on the role of Deccan stairs disappearing," said co-author, Courtney Sprain, from the same university.

Either, the Deccan zone ranges did not play a role, something "unlikely," said Sprain, or raised a lot of climate-friendly gases during the lowest volume bulk of the explosions .

In the case of dinosaur disappearance, the symptoms of significant climate change occurred before the peak in volcanic explosions.

<! – – Download an attached document of this news ->

Source link