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(NPR)   Oldest rock ever found a treasure trove of history. No, not the stuff in your dad's 8-track collection   (npr.org) divider line 26
    More: Cool, oldest rocks, field guides, surface waters, thermometers, Carl Zimmer, history, collections  
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2945 clicks; posted to Geek » on 12 Jan 2013 at 5:13 AM (1 year ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2013-01-12 12:24:48 AM
My dad still has an 8-track collection and player.

Well played, subby.
 
2013-01-12 12:59:20 AM
Rocks that crystallize at these temperatures have been exposed to water. This is something geologists know. Says Professor Watson:

"Any rock heated in the presence of water - any rock, at any time, in any circumstance - will begin to melt at between 650 and 700 degrees. This is the only terrestrial process that occurs so predictably."

So, all of a sudden, here was evidence that the red hot, lava-laced, boiling, lifeless Earth of 4.4 billion years ago  had water on it!What's more, Watson says, "we feel our results point more strongly toward the idea of surface water."

Wasn't the surface pressure of the atmosphere comparatively high back then?  Is is possible the crystal was formed in a high pressure ground-level cloud, especially if water vapor was heavier than the gas sitting on top of it?
 
2013-01-12 01:41:53 AM
Ah the eight track where I first heard the tale of  brewster the rooster.
 
2013-01-12 02:06:31 AM
Was it Freedom Rock?  Well, turn it up, man!
 
2013-01-12 04:18:03 AM

Lsherm: Wasn't the surface pressure of the atmosphere comparatively high back then? Is is possible the crystal was formed in a high pressure ground-level cloud, especially if water vapor was heavier than the gas sitting on top of it?


I have no idea and may be reading too much into what they are trying to say, but I would assume they would have accounted for pressure and a gaseous state of H2O, given that the sentence implies this phenomenon takes place regardless of pressure of liquid water. So whether it be underground, underwater, or near the surface, as long as it is liquid the rock should behave the same.

And if the air could be humidified so much, that's still something compared to our previous guesswork of the early Earth. It would basically imply rain or consistent heated steam, which in and of itself could help stir things up.
 
2013-01-12 04:37:18 AM
It's from K-Tel, isn't it?
 
2013-01-12 05:24:29 AM
Papa was a rolling stone, (my son)
Where ever he laid his hat was his home
and when he died, all he left us was alone
 
2013-01-12 05:25:07 AM

Lsherm: Rocks that crystallize at these temperatures have been exposed to water. This is something geologists know. Says Professor Watson:

"Any rock heated in the presence of water - any rock, at any time, in any circumstance - will begin to melt at between 650 and 700 degrees. This is the only terrestrial process that occurs so predictably."

So, all of a sudden, here was evidence that the red hot, lava-laced, boiling, lifeless Earth of 4.4 billion years ago  had water on it!What's more, Watson says, "we feel our results point more strongly toward the idea of surface water."

Wasn't the surface pressure of the atmosphere comparatively high back then?  Is is possible the crystal was formed in a high pressure ground-level cloud, especially if water vapor was heavier than the gas sitting on top of it?


Maybe?
 
2013-01-12 06:20:17 AM

FirstNationalBastard: It's from K-Tel, isn't it?


Sung by the "Original Artists"!
 
2013-01-12 07:29:55 AM
So where did this rock find a treasure trove?
 
2013-01-12 07:37:12 AM
scientists/theories make me smile. it's just a matter of time before someone reveals how horribly wrong they are about their dating methods, then all you turkeys will believe their next load of crap until that's proven faulty. silly rabbits, tricks are for kids.

/ scientists are only humans. stupid, ugly humans
 
2013-01-12 08:07:37 AM

KrispyKritter: scientists/theories make me smile. it's just a matter of time before someone reveals how horribly wrong they are about their dating methods, then all you turkeys will believe their next load of crap until that's proven faulty. silly rabbits, tricks are for kids.

/ scientists are only humans. stupid, ugly humans


Any dating method which gets you a date is a correct dating method.

/Roofied people are victims, not dates.
 
ZAZ [TotalFark]
2013-01-12 09:00:25 AM
680 C is well over the critical point of water. This rock was not in any ocean.
 
2013-01-12 09:53:28 AM

ZAZ: 680 C is well over the critical point of water. This rock was not in any ocean.


Because lava never erupts under water. But the process they were eluding too is probably flux melting, happens all the time in subduction zones when water is dragged into the mantle and alters the melting point of the surround rocks..
 
2013-01-12 10:52:05 AM

Lsherm: Wasn't the surface pressure of the atmosphere comparatively high back then?


There's some research that indicates yes, and some that indicates no. Quite a bit of "unsettled" science, there, actually.
 
2013-01-12 11:00:22 AM
Interesting article, bullshiat writing style. Please, dude, leave the snark to the professionals.
 
2013-01-12 11:36:01 AM

ZAZ: 680 C is well over the critical point of water. This rock was not in any ocean.


There is water in molten rock. There's been water in the Earth's mantle since its formation.
Link
 
2013-01-12 12:41:17 PM
Interesting
 
2013-01-12 01:57:59 PM
Titanium thermometer:

I love how these "scientists" pretend that titanium inclusion is dependent on the lone variable of temperature, and completely ignore the variable of, you know, local titanium concentration. So if there is ZERO titanium around it, then it will farking MIRACLE up some titanium to include, because, FSM dammit, it's all about the temperature dontchaknow?

Stupid people saying stupid things. It just shows that a little knowledge can be a dangerous thing.

/science, it just works, biatches
 
2013-01-12 02:37:57 PM
Thanks for the link, submitter!
 
2013-01-12 03:58:07 PM
Hey man, is that freedom rock? Turn it up!
 
2013-01-12 04:26:44 PM
Oldest terrestiral rock. The one fromm the meteorite thread yesterday was older than the sun...soooo...yeah
 
2013-01-13 01:40:10 AM
wearscience.com
 
2013-01-13 04:32:13 AM
I don't understand why it would come as any shock to anyone that life is here not from some cosmic fluke but because of the preferential properties of the Universe. We are a product of the same forces and physical behaviors that created everything else. Our existence is no more special or more of a fluke than planets becoming round or stars exploding or crystal lattice formation.

Like everything else in the Universe, life exists because it's impossible for it not to exist.
 
2013-01-13 11:46:57 AM
I have a friend with an 8-track player in his jeep. He keeps his wallet in it.
 
2013-01-13 05:35:36 PM

SevenizGud: Titanium thermometer:

I love how these "scientists" pretend that titanium inclusion is dependent on the lone variable of temperature, and completely ignore the variable of, you know, local titanium concentration. So if there is ZERO titanium around it, then it will farking MIRACLE up some titanium to include, because, FSM dammit, it's all about the temperature dontchaknow?

Stupid people saying stupid things. It just shows that a little knowledge can be a dangerous thing.

/science, it just works, biatches



Titanium is ubiquitous both on Earth and in space. Google is your friend.

Why do you hate science so much?
 
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