Volcanic eruptions caused Global cooling, not Meteors

How did the Earth cool down 15,000 years ago?

Our Earth went through a cooling phase for many years since around 15,000 years ago. But what is the actual cause? Scientists believed for many years that an impact from space caused this, like a meteor collision. But a research team who were investigating the Hall’s cave in Texas have now confirmed that the actual case is multiple volcanic eruptions. 

How does a meteor collision cool the earth? Meteorite that collided with the earth contains extra-terrestrial dust, which blocks the amount of sun’s radiation that enters the atmosphere.

One of the main questions was “did a meteor collision occur after the ice age, which increased the ice age for an extra 1000 years?” 

The team discovered sediment layers inside the cave, which dated back to the time of ice age. They state that the volcanic eruptions may have been the reason for the mass extinction too. The chemistry behind the sediments also show that this event may have occurred multiple times during 10,000 to 15,000 years ago.

How does volcanic eruptions cool the earth? It is the same way, the dust released from volcanoes result in more reflection of sun’s radiations, which can abruptly cool the surface of the earth for 5 years. 

Also, the team states that after analyzing the sediments, elements such as iridium, platinum, palladium, and more were not found, which is typically found in meteorites. But the elements that were present matched that of the previous volcanic gases.