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Earth's oldest known meteor crash site found in Australian Outback 5nvklj





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Earth's oldest known meteor crash site found in Australian Outback

Dragon
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Post by Dragon on Sun Jan 26, 2020 1:52 am

Despite Earth's long history of getting smacked by space rocks, evidence of those collisions can be very hard to find; even the largest impact craters vanish over time due to erosion and tectonic activity, taking the best reminders of Earth's past with them. Now, however, researchers in Western Australia believe they've found the single oldest impact crater ever detected, dating to roughly 2.2 billion years ago.

In a new study published Jan. 21 in the journal Nature Communications, the researchers studied a 45-mile-wide (70 kilometers) impact site in the Australian Outback known as Yarrabubba. Today, all that's visible of the once-enormous crater is a small red hill at the area's center, known as Barlangi Hill. According to the researchers, the minerals inside that hill hold valuable information about the impact's age.

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Earth's oldest known meteor crash site found in Australian Outback 334pu7m
Dragon
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Earth's oldest known meteor crash site found in Australian Outback Empty Re: Earth's oldest known meteor crash site found in Australian Outback

Post by Dragon on Sun Jan 26, 2020 1:53 am

Earth's oldest known meteor crash site found in Australian Outback GApPfLL8ijEfBmM2AUozrj-1024-80
(Image: © Google Earth/ The Conversation)

Researchers drew the estimated shape of the vanished Yarrabubba impact crater over this Google Earth image of Western Australia. The structure may be part of the oldest known impact crater on Earth.

Source / Image Courtesy


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Earth's oldest known meteor crash site found in Australian Outback 334pu7m

    Current date/time is Wed Feb 26, 2020 2:12 pm