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(Science Daily)   Scientist discover the deeper they go, the older the dirt gets   (sciencedaily.com) divider line 32
    More: Obvious, Earth, Carnegie's Erik Hauri, volcanic activity, Cook Islands, chemical bonds, volcanic rocks, subduction zones, deep mantle  
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3026 clicks; posted to Geek » on 24 Apr 2013 at 7:36 PM (1 year ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2013-04-24 07:15:56 PM  
This is a basic fact that Creationists can't understand.
 
2013-04-24 07:39:59 PM  
Scientist discover the deeper they go, the older the girl gets

Is how I read the headline.  I think there's something wrong with me.
 
2013-04-24 07:40:57 PM  
What we need is for teh scientists to find a footprint in that Archean-Era dirt.
 
2013-04-24 07:43:21 PM  
Hmm... If carbon fuel deposits are in the subducting seafloor then shouldn't we work on getting those out now, since otherwise they'll just become volcano burps in the future and that energy content would be lost?

Just a thought. There's a reason volcanoes emit those greenhouse gases. Then we could leave other energy deposits in the ground. Or burn them all, I'm not afraid.
 
2013-04-24 07:49:25 PM  
I was thinking the same thing when I was cleaning my toenails last month.
 
2013-04-24 07:51:11 PM  
Now that's interesting.

I understand that it is a pretty well-supported fact that the ocean floor (no matter where you go) is no older than about 180-220 million years old, implying that the tectonic plates recycle themselves constantly. New ones are created as the old ones move over top of each other.

This seems to imply that ancient subducted plates are still there, trapped in the mantle, like layered pie crust.
 
2013-04-24 07:58:24 PM  
Your mom inconsolable.
 
2013-04-24 08:07:40 PM  

Ishkur: Now that's interesting.

I understand that it is a pretty well-supported fact that the ocean floor (no matter where you go) is no older than about 180-220 million years old, implying that the tectonic plates recycle themselves constantly. New ones are created as the old ones move over top of each other.

This seems to imply that ancient subducted plates are still there, trapped in the mantle, like layered pie crust.


Mmmmmm... Pie.
 
2013-04-24 08:07:51 PM  
where do you think the vast oceans of non-bio inorganic oil at the earth's core come from? duh.
 
2013-04-24 08:12:49 PM  

utah dude: where do you think the vast oceans of non-bio inorganic oil at the earth's core come from? duh.


Serious face palm time.

/The original hypothesis involved your mothers back and a squeegee.
 
2013-04-24 08:32:41 PM  
i.chzbgr.com
 
2013-04-24 08:37:56 PM  

wildcardjack: Serious face palm time.

/The original hypothesis involved your mothers back and a squeegee.


the weird thing is is that republicans actually believe theories about nonbiogenic oil.

/chemist
//i burn dead plant life in my car
 
2013-04-24 08:49:44 PM  

Ishkur: This seems to imply that ancient subducted plates are still there, trapped in the mantle, like layered pie crust.


Yup. There's a really interesting article in Nature Geoscience that used those subducted plates (they can be detected using seismic imaging, i.e. listening to how seismic waves travel through the earth) to reconstruct how the western edge of North America evolved from about 145 million years ago to 55 million years ago (when the Rocky Mountains were building).

http://earth-pages.co.uk/2013/04/07/cordilleran-terrane-accretion-in -w estern-north-america/

Although, they're not necessarily like layered pie crust. The ones from the article above piled up near vertically, folded over themselves like strands of wet spaghetti noodles because they were originally subducted very steeply (if they were subucted at a shallow angle, then you'd probably find them layered).

Anyways, neat stuff.
 
2013-04-24 08:51:57 PM  

utah dude: wildcardjack: Serious face palm time.

/The original hypothesis involved your mothers back and a squeegee.

the weird thing is is that republicans actually believe theories about nonbiogenic oil.

/chemist
//i burn dead plant life in my car


It's a real challenge to burn living plant life. It always seems to die out around the ignition point.
 
2013-04-24 08:52:49 PM  
Well hold god damn! Who could have imagined?
 
2013-04-24 08:56:36 PM  
The Law of Superposition never ceases to amaze.
 
2013-04-24 09:01:12 PM  

Uchiha_Cycliste: Well hold god damn! Who could have imagined?


Crap. I'm usually pretty good at this but I need to invoke Poe's Law here. Did you read the article and you're being sincere or are you reacting to the headline and being sarcastic?
 
2013-04-24 09:02:55 PM  

MusicMakeMyHeadPound: Uchiha_Cycliste: Well hold god damn! Who could have imagined?

Crap. I'm usually pretty good at this but I need to invoke Poe's Law here. Did you read the article and you're being sincere or are you reacting to the headline and being sarcastic?


Curious isn't it? =P
 
2013-04-24 09:17:51 PM  

PC LOAD LETTER: This is a basic fact that Creationists can't understand.


And those "Expanding Earth" lunatics.
 
2013-04-24 09:29:48 PM  

wildcardjack: utah dude: wildcardjack: Serious face palm time.

/The original hypothesis involved your mothers back and a squeegee.

the weird thing is is that republicans actually believe theories about nonbiogenic oil.

/chemist
//i burn dead plant life in my car

It's a real challenge to burn living plant life. It always seems to die out around the ignition point.


God did it.
 
2013-04-24 10:10:08 PM  

PC LOAD LETTER: This is a basic fact that Creationists can't understand.


But...but there are places where new dirt is below old dirt! They must've been put there during Noah's Flood!

/This is Ian Juby's entire schtick these days.
 
2013-04-24 11:01:24 PM  

utah dude: where do you think the vast oceans of non-bio inorganic oil at the earth's core come from? duh.


i.imgur.com
 
2013-04-24 11:38:08 PM  
Do zircon crystals survive subduction?Recently watched a Nova show and they talked about dating the oldest rocks in Australia by looking at zircon crystals embedded in it.
 
2013-04-25 01:11:51 AM  

Wrencher: Do zircon crystals survive subduction?Recently watched a Nova show and they talked about dating the oldest rocks in Australia by looking at zircon crystals embedded in it.


Zircon crystals survive a lot of things - they just add another layer, and the layer characteristics gives a lot of details about the condition the crystal was in and the duration in that state.
 
2013-04-25 01:12:53 AM  
www.2012.com.au
 
2013-04-25 01:40:06 AM  

Ishkur: This seems to imply that ancient subducted plates are still there, trapped in the mantle, like layered pie crust.


If you look at the blurb from where it was published, Nature: "Ancient crust rises from the deep", the idea seems to be that the crust gets broken up as it goes deeper.

www.nature.com
 
2013-04-25 02:18:46 AM  

Ed Grubermann: PC LOAD LETTER: This is a basic fact that Creationists can't understand.

And those "Expanding Earth" lunatics.


Um, we occasionally do get hit by rocks from space. It may be a very slow process but Earth is growing. Of course lately (on a grand geological scale) we have been launching lots of stuff into space so now it might be a wash. I don't know if there is any real way to calculate the incoming mass we gain each year vs the outgoing mass of various probes, ravers, satellites, etc...
 
2013-04-25 04:44:13 AM  

Hacker_X: Ed Grubermann: PC LOAD LETTER: This is a basic fact that Creationists can't understand.

And those "Expanding Earth" lunatics.

Um, we occasionally do get hit by rocks from space. It may be a very slow process but Earth is growing. Of course lately (on a grand geological scale) we have been launching lots of stuff into space so now it might be a wash. I don't know if there is any real way to calculate the incoming mass we gain each year vs the outgoing mass of various probes, ravers, satellites, etc...


The weight of outgoing ravers is minimal. All the dancing and the activity boosting,drugs prevent them from getting any kind of fat on them.
 
2013-04-25 06:42:31 AM  

Hacker_X: Ed Grubermann: PC LOAD LETTER: This is a basic fact that Creationists can't understand.

And those "Expanding Earth" lunatics.

Um, we occasionally do get hit by rocks from space. It may be a very slow process but Earth is growing. Of course lately (on a grand geological scale) we have been launching lots of stuff into space so now it might be a wash. I don't know if there is any real way to calculate the incoming mass we gain each year vs the outgoing mass of various probes, ravers, satellites, etc...


How do people dancing to electronic music cause the earth to lose mass?
 
2013-04-25 10:35:32 AM  
29 posts and no C&H yet?

assets.amuniversal.com
 
2013-04-25 11:52:48 AM  

xria: Hacker_X: Ed Grubermann: PC LOAD LETTER: This is a basic fact that Creationists can't understand.

And those "Expanding Earth" lunatics.

Um, we occasionally do get hit by rocks from space. It may be a very slow process but Earth is growing. Of course lately (on a grand geological scale) we have been launching lots of stuff into space so now it might be a wash. I don't know if there is any real way to calculate the incoming mass we gain each year vs the outgoing mass of various probes, ravers, satellites, etc...

How do people dancing to electronic music cause the earth to lose mass?


Drugs
 
2013-04-26 06:49:12 AM  
OK, that is one really weird spell check correction. Rovers somehow became ravers.
 
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