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Huge Asteroids Brought Gold to Infant Earth, Study Says
National Geographic News ^ | December 9, 2010 | Brian Handwerk

Posted on 12/24/2010 11:45:17 AM PST by SunkenCiv

..Scientists have long known that there's a mysterious amount of siderophile ("iron-loving") metals in Earth's mantle. Such metals, including gold, tend to affiliate with iron in their liquid forms.

The best explanation has been that some sort of space object brought the elements to the planet just after it formed its core, but the exact nature of the impactor has been a matter of debate.

Based on computer simulations, the new study says that a small number of enormous, random impacts roughly 4.5 billion years ago are the sources of Earth's iron-loving materials.

These impactors were rocky objects left over from our solar system's planet-formation phase. The largest one that hit Earth was roughly the size of Pluto -- up to 2,000 miles (3,220 kilometers) wide, the study suggests.

And young Earth wasn't the only recipient: Cataclysmic collisions delivered iron-loving metals to the moon and Mars around the same time, the study authors say. What's more, the impacts may have been the source of water on the moon...

Moon rocks brought back during the Apollo missions led to the now widely accepted theory that the moon formed when a Mars-size object crashed into early Earth.

Energy from the impact would have spurred the still forming Earth to develop its mostly iron core. When this happened, iron-loving metals should have followed molten iron down from the planet's mantle and into the core.

But we know that gold and other iron-lovers are found in modest abundances in Earth's mantle.

Using a mathematical approach called Monte Carlo analysis, Bottke's team calculates that iron-loving metals were delivered in a limited number of massive impacts that just happened to miss the moon...

(Excerpt) Read more at news.nationalgeographic.com ...


TOPICS: Astronomy; Science
KEYWORDS: 132ce2kr2st2u19; catastrophism; gold; impact; lateheavybombardment
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subtitle: Pluto-size space rocks may have put precious metals in the mantle.

1 posted on 12/24/2010 11:45:18 AM PST by SunkenCiv
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A moon-size object collides with a planet in an artist's conception. NASA/JPL-Caltech

Huge Asteroids Brought Gold to Infant Earth, Study Says

2 posted on 12/24/2010 11:45:45 AM PST by SunkenCiv (The 2nd Amendment follows right behind the 1st because some people are hard of hearing.)
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To: 75thOVI; aimhigh; Alice in Wonderland; AndrewC; aragorn; aristotleman; Avoiding_Sulla; BBell; ...

Sure is strange how none of the actual evidence points to the unique solution that the Moon was born from impact on the proto-Earth, and how all the remaining evidence points toward a capture origin.
 
Catastrophism
 
· join · view topics · view or post blog · bookmark · post new topic · subscribe ·
 

3 posted on 12/24/2010 11:47:15 AM PST by SunkenCiv (The 2nd Amendment follows right behind the 1st because some people are hard of hearing.)
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To: SunkenCiv

Thank goodness. I was getting worried what Soros would do when he bought up all the precious metals on Earth. Now he can make speculations on astroids.


4 posted on 12/24/2010 11:49:02 AM PST by bgill (K Parliament- how could a young man born in Kenya who is not even a native American become the POTUS)
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To: SunkenCiv

and two other giant asteroids brought frankincense and myrrh.


5 posted on 12/24/2010 11:50:45 AM PST by billorites (freepo ergo sum)
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To: billorites

Wonder if we can get one to come and take the Democrats away from Earth?


6 posted on 12/24/2010 11:52:55 AM PST by screaminsunshine (Americanism vs Communism)
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To: SunkenCiv

so.... if the moon formed from ejecta of a collision then does that mean what hit the baby Earth was bigger than the moon or maybe the same size?


7 posted on 12/24/2010 11:55:36 AM PST by GeronL (#7 top poster at CC, friend to all, nicest guy ever, +96/-14, ignored by 1 sockpuppet.. oh & BANNED)
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To: billorites

A+


8 posted on 12/24/2010 11:55:42 AM PST by ClearCase_guy
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To: billorites

the article actually started with something like that, I kinda edited it out. :’)


9 posted on 12/24/2010 11:56:34 AM PST by SunkenCiv (The 2nd Amendment follows right behind the 1st because some people are hard of hearing.)
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To: SunkenCiv

'Gold?'

10 posted on 12/24/2010 11:57:57 AM PST by Free Vulcan (The cult of Islam must be eradicated by any means necessary.)
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To: billorites

I nominate you for post of the day. :p


11 posted on 12/24/2010 12:01:31 PM PST by Politicalmom (America-The Land of the Sheep, the Home of the Caved.)
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To: billorites

So giant asteroids may bring us enough gold to pay off our government debt?


12 posted on 12/24/2010 12:04:00 PM PST by almost done by half
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To: billorites

Hey billorites: Amen to that!

“The best explanation has been that some sort of space object brought the elements to the planet just after it formed its core........” Yes. His Name is Yahweh, or Jehovah, or God, or The Lord Jesus Christ.

Isa 45:3 And I will give thee the treasures of darkness, and hidden riches of secret places, that thou mayest know that I, the LORD, which call thee by thy name, am the God of Israel.

Joh 1:1 In the beginning was the Word, and the Word was with God, and the Word was God.
Joh 1:2 The same was in the beginning with God.
Joh 1:3 All things were made by him; and without him was not any thing made that was made.


13 posted on 12/24/2010 12:05:06 PM PST by Tucker39
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To: GeronL; SunkenCiv

We picked up the moon from the planet that formed the asteroid belt when it was destroyed.


14 posted on 12/24/2010 12:06:23 PM PST by bigheadfred (Merry Christmas)
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To: GeronL
so.... if the moon formed from ejecta of a collision then does that mean what hit the baby Earth was bigger than the moon or maybe the same size?

Bigger than the moon. Mars-sized. Mars is roughly twice the size of the moon. It stands to reason, seeing as that a good bit of the "stuff" from the impactor would have been left behind on Earth, while the ejecta turned into the moon.

15 posted on 12/24/2010 12:06:37 PM PST by America_Right (The best thing about the Obama Presidency: McCain isn't the President!)
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To: bigheadfred
We picked up the moon from the planet that formed the asteroid belt when it was destroyed.

The impact theory is more widely accepted now. It is actually being presented as fact in a lot of astronomy shows I watch.

16 posted on 12/24/2010 12:09:59 PM PST by America_Right (The best thing about the Obama Presidency: McCain isn't the President!)
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To: billorites
and two other giant asteroids brought frankincense and myrrh.

LOL !

Good one.


17 posted on 12/24/2010 12:10:04 PM PST by pyx (Rule#1.The LEFT lies.Rule#2.See Rule#1. IF THE LEFT CONTROLS THE LANGUAGE, IT CONTROLS THE ARGUMENT.)
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To: billorites

nice!


18 posted on 12/24/2010 12:19:03 PM PST by Free Vulcan (The cult of Islam must be eradicated by any means necessary.)
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To: America_Right

Dammit Jim, I’m a cabinetmaker, not a physicist...


19 posted on 12/24/2010 12:26:26 PM PST by bigheadfred (Merry Christmas)
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To: SunkenCiv

Just in case anyone is planning a trip...http://www.permanent.com/a-index.htm


20 posted on 12/24/2010 12:29:34 PM PST by bigheadfred (Merry Christmas)
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To: SunkenCiv

Silly scientist. Everyone knows the moon, Mars and the Earth were bombarded with gold & iron when the planet between mars and Jupiter was hit by planet X


21 posted on 12/24/2010 12:32:59 PM PST by winodog
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To: SunkenCiv

Sound like a book I ready by Jules Verne.

http://www.julesverne.ca/vernebooks/jvbkchase.html

Talk about wrecking the world economy. Imagine a rock out there big enough to make gold as common as aluminum.


22 posted on 12/24/2010 12:35:51 PM PST by bleach (Thanks to all you Vets!)
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To: almost done by half

Yes. Maybe we’ll be lucky and get hit by a huge asteroid.


23 posted on 12/24/2010 12:52:56 PM PST by Brilliant
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To: billorites

beat me to it :)


24 posted on 12/24/2010 1:10:38 PM PST by NonValueAdded (Palin 2012: don't retreat, just reload)
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To: America_Right
Mars is roughly twice the size of the moon.

Note that that's diameters. For the Moon - Mars - Earth, the ratios are roughly: 1 - 2 - 4

Volumes would be the cubes of those: 1 - 8 - 64

So the Moon, at only 1/64th Earth's volume, is actually a small chunk.


25 posted on 12/24/2010 1:23:31 PM PST by canuck_conservative
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To: SunkenCiv; CJ Wolf; houeto; Quix; null and void; B4Ranch; Whenifhow; Silentgypsy; blam; FromLori; ..
Waiting-for-the-frakincense-and-myrrh-theory-to-complete-this-Christmas-theme ping.

"Space Energy/Solar Weirdness" ping.


Ping list dealing with odd space phenomena and solar events.

FReepmail me if you want on or off

The Comedian's "Space Energy/Solar Weirdness" ping list...


Frowning takes 68 muscles.
Smiling takes 6.
Pulling this trigger takes 2.
I'm lazy.

26 posted on 12/24/2010 2:18:45 PM PST by The Comedian (Government: Saving people from freedom since time immemorial.)
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To: SunkenCiv

One big asteroid was the one that hit Fort Knox. All that gold had a chapel built it over by the natives who now have their warriors guarding it. Be warned! To approach it may mean death to the uninitiated.


27 posted on 12/24/2010 2:44:58 PM PST by count-your-change (You don't have be brilliant, not being stupid is enough.)
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To: billorites

A+++


28 posted on 12/24/2010 2:46:23 PM PST by Domestic Church (AMDG...)
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To: canuck_conservative
Heh, yeah. Different way of looking at it, same result. :) Heck, we could take it a step further and look up densities, as well, and do a whole thing with the total mass of each body! No reason to go into that, though, since we are in total agreement on this. My only point was that a Mars-sized object hit early Earth and a bit of the ejecta eventually coalesced into our moon.

As an aside, from what I have watched/read, the Earth and the object basically destroyed each other, and were nothing but big piles (a single big pile?) of rubble for a LONG time. The early Solar system was a very dangerous place.

29 posted on 12/24/2010 3:12:29 PM PST by America_Right (The best thing about the Obama Presidency: McCain isn't the President!)
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To: bigheadfred
Dammit Jim, I’m a cabinetmaker, not a physicist...

Good one! Neither am I. Just a wannabe astronomer/astrophysicist. Never could handle the math, though. Ended up doing computer stuff. Still sciency, but without all the math. My childhood hero was Carl Sagan. But then Reagan came along and knocked him out of first place. :)

30 posted on 12/24/2010 3:17:38 PM PST by America_Right (The best thing about the Obama Presidency: McCain isn't the President!)
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To: SunkenCiv
Based on computer simulations...
IOW, a Wild-A$$ed Guess.
31 posted on 12/24/2010 3:28:18 PM PST by Bratch
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To: The Comedian
There's a ping list for THAT??!!!
32 posted on 12/24/2010 4:57:06 PM PST by starlifter (Pullum sapit)
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To: America_Right; SunkenCiv

Immanuel Velikovsky was always a fave of mine. My mom handed me one of his books when I was in Jr. High. It was on.

Just because the impact theory is the most widely accepted one currently doesn’t mean I HAVE to believe it.

If they were to bribe me with some of that there high falutin’ grant fundage I might mouth the words they whisper in my ear.

What they need to do is invent a time traveling video camera and send it back. Seeing is believing.


33 posted on 12/24/2010 5:00:37 PM PST by bigheadfred (Merry Christmas)
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To: The Comedian

LOVE YA BRO.

HAVE A BLESSED DAY.


34 posted on 12/24/2010 5:06:33 PM PST by Quix (Times are a changin' INSURE you have believed in your heart & confessed Jesus as Lord Come NtheFlesh)
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To: America_Right; canuck_conservative
Heck, we could take it a step further and look up densities, as well, and do a whole thing with the total mass of each body!

Wouldn't the mass of the moon be less comparatively as it lacks the heavier core?

Made of lighter materials.

Lighter than air.

That must be right!

I've SEEN it floating thru the night sky!

;-)

35 posted on 12/24/2010 5:29:29 PM PST by bigheadfred (This is going to be GREAT!)
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To: canuck_conservative; America_Right

Right you are about the volume. Density also matters, the Moon has about 1/100th the mass of the Earth, Mars though is about 1/8th the mass of Earth as well as about 1/8th the volume.


36 posted on 12/24/2010 10:07:18 PM PST by SunkenCiv (The 2nd Amendment follows right behind the 1st because some people are hard of hearing.)
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To: Bratch

I like that gif, may have to steal that.


37 posted on 12/24/2010 10:08:42 PM PST by SunkenCiv (The 2nd Amendment follows right behind the 1st because some people are hard of hearing.)
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To: count-your-change

Probably Oddjob.


38 posted on 12/24/2010 10:41:18 PM PST by SunkenCiv (The 2nd Amendment follows right behind the 1st because some people are hard of hearing.)
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To: bigheadfred; winodog; GeronL; America_Right; canuck_conservative

http://www.freerepublic.com/focus/chat/1234919/posts?page=4#4
http://www.freerepublic.com/focus/news/653287/posts

Okay, now I’ve got to get crackin’ and do the GGG digest and ping, which was my plan when I got online after a late nap on the 24th. :’)


39 posted on 12/24/2010 10:47:27 PM PST by SunkenCiv (The 2nd Amendment follows right behind the 1st because some people are hard of hearing.)
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To: bigheadfred
Wouldn't the mass of the moon be less comparatively as it lacks the heavier core?

Yes, the mass is definitely less. But I think you are confusing mass with density. Mass equals density times volume. And yeah, the Earth is a heck of a lot more dense than the moon. All the lighter, dusty stuff coalesced into the moon, while we kept all the nice, dense, metallic stuff for ourselves down here (like our heavy iron core that you mentioned - without which we would be totally $crewed).

And you have a good point about the moon floating. I never thought of that. It's like a gigantic dust balloon. Yeah! That's it!

Oh, and Merry Christmas, everybody! I just noticed it is passed midnight in my timezone.

40 posted on 12/24/2010 11:59:11 PM PST by America_Right (The best thing about the Obama Presidency: McCain isn't the President!)
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To: bigheadfred
Immanuel Velikovsky was always a fave of mine. My mom handed me one of his books when I was in Jr. High. It was on.

Yeah, he gets more impressive as time goes on and more of his "crackpot" theories get proven right. Brilliant!

I had an engineer buddy of mine work on that time machine idea, but he couldn't power it. He muttered something about needing about 10 suns to power it and threw it in his recycle bin. Oh, well... :)

41 posted on 12/25/2010 12:07:52 AM PST by America_Right (The best thing about the Obama Presidency: McCain isn't the President!)
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To: bigheadfred

Thanks bhf.


42 posted on 12/25/2010 12:23:35 AM PST by SunkenCiv (The 2nd Amendment follows right behind the 1st because some people are hard of hearing.)
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To: America_Right
"Emerging from a particularly credulous Southern California culture, Nancy and Ronald Reagan relied on an astrologer in private and public matters -- unknown to the voting public. Some portion of the decision-making that influences the future of our civilization is plainly in the hands of charlatans." -- Carl Sagan
Sagan also blasted that Reagan made Carter look like Cardinal Richelieu, opposed SDI, and nearly singlehandedly gave birth to the global warming movement.


43 posted on 12/25/2010 12:29:08 AM PST by SunkenCiv (The 2nd Amendment follows right behind the 1st because some people are hard of hearing.)
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To: SunkenCiv

Element 79, by Fred Hoyle 1967...


44 posted on 12/25/2010 7:14:36 AM PST by null and void (We are now in day 702 of our national holiday from reality. - 0bama really isn't one of US.)
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To: The Comedian

Merry Christmas, TC! Hope Santa is good to you this year!

Ape Lex


45 posted on 12/25/2010 12:12:31 PM PST by April Lexington (Study the Constitution so you know what they are taking away!)
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To: SunkenCiv
Sagan also blasted that Reagan made Carter look like Cardinal Richelieu, opposed SDI, and nearly singlehandedly gave birth to the global warming movement.

Give me a break, I was a little kid. Reagan (first) got elected when I was 10! I remember getting mad at my mom for voting for Anderson. I know Carl was a whacky lib, but most academics are.

Oh, by the way, Reagan and Thatcher actually did kinda give birth to the global warming thing. They were trying to get the libs to get on board with nuke power. Maggie was VERY vocal about it.

46 posted on 12/25/2010 2:03:32 PM PST by America_Right (The best thing about the Obama Presidency: McCain isn't the President!)
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To: April Lexington
Ammo?! Thanks Santa!!

Merry Christmas bro!


Frowning takes 68 muscles.
Smiling takes 6.
Pulling this trigger takes 2.
I'm lazy.

47 posted on 12/25/2010 7:19:10 PM PST by The Comedian (Government: Saving people from freedom since time immemorial.)
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To: The Comedian

Mmmm.....ammo! And Scotch! The Ol Elf was good this year!


48 posted on 12/26/2010 10:22:03 AM PST by April Lexington (Study the Constitution so you know what they are taking away!)
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To: April Lexington
Mmmm.....ammo! And Scotch! The Ol Elf was good this year!

Yeah! He left the same stuff for me!

Sure am glad St. Nick ain't a liberal teetotaler.


Frowning takes 68 muscles.
Smiling takes 6.
Pulling this trigger takes 2.
I'm lazy.

49 posted on 12/26/2010 11:24:35 AM PST by The Comedian (Government: Saving people from freedom since time immemorial.)
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To: The Comedian

My wife gave me .308 Gold Medal.


50 posted on 12/26/2010 11:36:35 AM PST by Farmer Dean (stop worrying about what they want to do to you,start thinking about what you want to do to them)
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