Tsunami Memories - Prehistoric Asteroid-Collision On Earth
Drifting memories of the ruined Poompugar came back to me while I was moving around the altered coastal line of Mullaitivu, and the prehistoric asteroid, which struck the Planet.
Geologists Gary Byerly, Xiaogang Xie, Donald Lowe and Joseph Wooden of Louisiana State and Stanford universities published in the journal SCIENCE about the strike.
They had found traces of an asteroid-collision that they said would have created a giant tsunami that swept around the earth several times, inundating everything except the mountains and changed drastically and almost all life on land was exterminated.
When the asteroid hit, it was vaporized by the extreme energy of the impact.
Condensation of this vapor produced droplets of melt, called spherules, which dropped into the roiling sea over the next few days and were deposited in layers on the sea floor.
This cataclysm some 3.
5 billion years ago is the earliest known meteor to hit the Earth, and one of at least four that have been identified in a geologically brief 300-million-year period.
They identified traces of the event in some of the oldest known rocks on Earth - in South Africa and northwest Australia.
It is believed there was even more water covering the surface of the Earth than it is today.
It would have taken about 30 hours from impact for the tsunami to travel all the way around the world.
Then, of course, it wouldn't stop, but bounce all the way back till it met itself 30 hours later, then bounce the other way again, setting up a harmonic.
The water would likely have inundated everything but the mountains, and drastically eroded the continental landmasses, changing their coastlines dramatically.
The heat of the impact would have evaporated the upper 30 to 300 feet of water in the oceans.
It would also have killed everything, or almost everything, that was alive at that time on land or near the ocean surface.
The scientists said, "There was almost certainly life at that time.
Primitive, bacterial life, and if the impacts were made by a meteor 20 miles in diameter, they would have killed everything on the surface of the Earth.
First a hot steam of molten rock and water would have withered most life, and then the massively destructive tsunamis would have destroyed even more.
After that, years of incredibly cold winters, caused by particles in the atmosphere blocking out the sun, would have conspired to kill nearly everything else.
Anything that survived would have been in deep rocks or below the surface of the Earth.
"
Geologists Gary Byerly, Xiaogang Xie, Donald Lowe and Joseph Wooden of Louisiana State and Stanford universities published in the journal SCIENCE about the strike.
They had found traces of an asteroid-collision that they said would have created a giant tsunami that swept around the earth several times, inundating everything except the mountains and changed drastically and almost all life on land was exterminated.
When the asteroid hit, it was vaporized by the extreme energy of the impact.
Condensation of this vapor produced droplets of melt, called spherules, which dropped into the roiling sea over the next few days and were deposited in layers on the sea floor.
This cataclysm some 3.
5 billion years ago is the earliest known meteor to hit the Earth, and one of at least four that have been identified in a geologically brief 300-million-year period.
They identified traces of the event in some of the oldest known rocks on Earth - in South Africa and northwest Australia.
It is believed there was even more water covering the surface of the Earth than it is today.
It would have taken about 30 hours from impact for the tsunami to travel all the way around the world.
Then, of course, it wouldn't stop, but bounce all the way back till it met itself 30 hours later, then bounce the other way again, setting up a harmonic.
The water would likely have inundated everything but the mountains, and drastically eroded the continental landmasses, changing their coastlines dramatically.
The heat of the impact would have evaporated the upper 30 to 300 feet of water in the oceans.
It would also have killed everything, or almost everything, that was alive at that time on land or near the ocean surface.
The scientists said, "There was almost certainly life at that time.
Primitive, bacterial life, and if the impacts were made by a meteor 20 miles in diameter, they would have killed everything on the surface of the Earth.
First a hot steam of molten rock and water would have withered most life, and then the massively destructive tsunamis would have destroyed even more.
After that, years of incredibly cold winters, caused by particles in the atmosphere blocking out the sun, would have conspired to kill nearly everything else.
Anything that survived would have been in deep rocks or below the surface of the Earth.
"
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