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Largest ever field of impact craters uncovered
NewScientist ^ | 10:00 07 November 04 | Jonathan Walter

Posted on 11/08/2004 3:54:12 PM PST by ckilmer

Largest ever field of impact craters uncovered

10:00 07 November 04

The discovery of the largest field of impact craters ever uncovered on Earth is the first evidence that the planet suffered simultaneous meteor impacts in the recent past. The field has gone unnoticed until now because it is partially buried beneath the sands of the Sahara desert in south-west Egypt.

Philippe Paillou of Bordeaux University Observatory in Floirac, France, first noticed circular geological structures in the Sahara last year, while analysing radar satellite pictures of the area.

The structures turned out to be part of a huge field of 100 craters spread over 5000 square kilometres near the Gilf Kebir plateau. The craters vary in diameter from 20 metres to 2 kilometres across. The previous largest known crater field covers a mere 60 square kilometres in Argentina.

In February, Paillou led a joint Egyptian and French mission to find the site and examined 13 of the craters, confirming that they were the result of simultaneous impacts. But accurately dating the field has been tricky. Paillou estimates that it is roughly 50 million years old, relatively young in geological terms.

The size of the field suggests that it could be the result of two or more meteors disintegrating as they entered Earth’s atmosphere, the first evidence of a multiple strike, he says.

“Because the field is so big, it can’t have been made by one meteor,” says Paillou. But more information is needed to understand the event and its effects, and Paillou plans to return to the area next month.

Jonathan Walter

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TOPICS: Culture/Society
KEYWORDS: egypt; impactcrater; meteor; saharadesert

1 posted on 11/08/2004 3:54:13 PM PST by ckilmer
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To: ckilmer

2 posted on 11/08/2004 3:56:44 PM PST by FlJoePa (Success without honor is an unseasoned dish; it will satisfy your hunger, but it won't taste good.)
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To: ckilmer
The size of the field suggests that it could be the result of two or more meteors disintegrating as they entered Earth’s atmosphere, the first evidence of a multiple strike, he says.
Before the JDAM or the MOAB this was the best the universe could do. And then from the primordial ooze emerged fully-formed humans who could speak freely and haft sophisticated tools with their opposing thumbs. Now it's anything goes.
3 posted on 11/08/2004 3:58:59 PM PST by Asclepius (protectionists would outsource our dignity and prosperity in return for illusory job security)
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To: Asclepius

Well, we finalyy foudn the WMDs..(g)....a few million years late, and a thousand miles away...


4 posted on 11/08/2004 4:13:36 PM PST by ken5050
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To: FlJoePa

If your point is that man is made for time but not eternity or eternity but not time--then I would disagree. I think man is made for both time and eternity.

I also think that the mythical offspring of god's and men like the minataur--are signs that something went wrong.

Except Jesus. If your point is that without Jesus time is not on our side--then I would agree.


5 posted on 11/08/2004 4:14:59 PM PST by ckilmer
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To: ckilmer

Um, my point was...ahh nevermind.


6 posted on 11/08/2004 4:22:50 PM PST by FlJoePa (Success without honor is an unseasoned dish; it will satisfy your hunger, but it won't taste good.)
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To: Asclepius
Before the JDAM or the MOAB this was the best the universe could do

Hardly, about the same time, maybe 60 million years ago. A large body hit the earth near present day Merida Mexico. The crater was about 180 kilometers or about 110 miles accross. That made the ~50 Megaton device the Soviets once exploded look like a firecracker in comparison. IT also likely killed off the dinosaurs.

7 posted on 11/08/2004 4:23:27 PM PST by El Gato (Federal Judges can twist the Constitution into anything.. Or so they think.)
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To: ckilmer

bump


8 posted on 11/08/2004 4:33:21 PM PST by Pagey (Hillary has been eerily silent lately, just like when she ran the War Room in the West Wing in 98,99)
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To: ckilmer

"The discovery of the largest field of impact craters ever uncovered on Earth is the first evidence that the planet suffered simultaneous meteor impacts in the recent past."

NO WAY ...

We know the dinosaurs were killed off my the climatic changes from a huge meteor ... this cant be the first evidence ... !!!


9 posted on 11/08/2004 5:00:11 PM PST by dartuser (Regarding Putin ... It only takes one moment of truth for an unbeliever to become an evangelist.)
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To: FlJoePa

ROFLMAO!!! Ahahahaha! Too cruel, TOO funny!


10 posted on 11/08/2004 5:06:00 PM PST by Frank_Discussion (May the wings of Liberty never lose a feather!)
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To: El Gato

You're mostly correct, it was 65 Million years ago, the end of the Cretaceous.


11 posted on 11/08/2004 5:23:00 PM PST by hyperpoly8 (Illegitimati Non Carborundum)
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To: FlJoePa

LOL!


12 posted on 11/08/2004 5:24:09 PM PST by Brett66 (W1 W1 W1 W1 W1 W1 W1 W1)
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To: blam

We were swarmed.


13 posted on 11/08/2004 5:25:16 PM PST by RightWhale (Destroy the dark; restore the light)
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To: FlJoePa
BAH!!


14 posted on 11/08/2004 5:30:21 PM PST by GeorgeBerryman
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To: RightWhale

No Date.


15 posted on 11/08/2004 5:34:22 PM PST by blam
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To: ckilmer

Carolina Bays (There's a half-million of these up and down the east coast of the US)

16 posted on 11/08/2004 5:35:43 PM PST by blam
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To: FlJoePa

of course horseshoe crabs are considered to be "successful" since they have been around for several hundred million years compared to the <1 million for humans. but then they're horseshoe crabs. not much honor in being a horseshoe crab. doesn't look like much fun either. kids flip them over when they come out the sea. terns eat their eggs on the beach.


17 posted on 11/08/2004 5:52:26 PM PST by ckilmer
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