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Waspie_Dwarf

Crater found from asteroid impact

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Waspie_Dwarf

Crater found from asteroid that covered 10% of Earth's surface in debris

The crater sits beneath a plain of hardened lava that formed after the asteroid impact, which occurred nearly 800,000 years ago.

 

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A flash of light would have come first, followed by a shockwave and massive earthquake. Only later would the hailstorm of black, glassy debris begun to fall, a rocky rain that would touch ten percent of the planet's surface.

That's the scene that followed a massive asteroid impact 790,000 years ago. The remains it scattered, called tektites, have been found from Asia to Antarctica. For decades, scientists have searched for the elusive resting place of the impactor that coated the Earth with debris. Now, they may have finally found it.

arrow3.gif Read More: Astronomy.com

 

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Piney

The impact most likely caused the volcanism. 

Astroblemes are fun to track though. The Chesapeake Bay impact threw tektites as far as Texas and scattered Miocene land and sea animals all over the region. 

We excavated this big tangled mess of sea mammal bones in Cape May that looked like a prehistoric butcher's dump from that impact. 

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Eldorado

"Imagine the scene: one fine day, about 790,000 years ago in the Pleistocene era, a 2-kilometer (1.2-mile) wide asteroid split the sky over modern-day southeast Asia.

"The gigantic space rock came in at a shallow angle, gouging out a 17 kilometer (10.6 mile) wide crater and showering the surrounding region with debris.

"While the impactor was 30 times smaller than the one that caused the Chicxulub extinction event, it was 100 times bigger than the more recent bolide that exploded over Chelyabinsk, Russia, in 2013."

Full monty at Sky & Telescope: https://www.skyandtelescope.com/astronomy-news/new-location-proposed-for-australasian-strewn-field-source-crater/

"Australasian impact crater buried under the Bolaven volcanic field, Southern Laos"

Paper at PNAS: https://www.pnas.org/content/early/2019/12/24/1904368116

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Piney

I think @Waspie_Dwarf already posted this El. 

 

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Waspie_Dwarf
5 hours ago, Piney said:

I think @Waspie_Dwarf already posted this El. 

 

Topics merged.

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