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If anyone is still thinking about the mantle, there's an interesting article at About.com: http://earth-pages.co.uk Probing the Earth’s mantle using noise Posted on December 4, 2012 by Steve Drury.
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Superstar
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Bill S, when I followed your link I got an article about papers being referenced in Peer-reviewed journals. Was that your intent, or is the link corrupted?
If you don't care for reality, just wait a while; another will be along shortly. --A Rose
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Sorry about that, Rose. I usually check my links before posting, but I was hurrying.
If you follow that link, and scroll down far enough you should come to the article about the mantle.
Let me know if you still have trouble and I'll set my son on it.
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Pre, I don't recall claiming that anything had replaced mantle currents, or that mantle currents provided the force that moved the continents.
I think gravity is the only force I have actually suggested as being largely responsible for moving continents and their underlying material. So, gravity is responsible for moving the Himalayas vertically, a few kilometers, against the force of gravity? Good one Bill.
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Pre are you saying that gravity cannot cause things to rise?
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Pre are you saying that gravity cannot cause things to rise? Since you claim that gravity is largely responsible for moving continents, I want you to demonstrate exactly how gravity is responsible for moving the Himalayas a few kilometers vertically (against the force of gravity).
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Pre are you saying that gravity cannot cause things to rise? Since you claim that gravity is largely responsible for moving continents, I want you to demonstrate exactly how gravity is responsible for moving the Himalayas a few kilometers vertically (against the force of gravity). One of the factors giving rise (pun intended) to the Himalayas is the upward displacement of lighter sediment by heavier sediment. Note the words 'lighter' and 'heavier', Pre. Ring any bells? Yep, you got it. It's all to do with gravity. No point in talking to you though. I'll just post this useful link for interested readers: http://dsc.discovery.com/convergence/everestbeyond/size/size.html
"Time is what prevents everything from happening at once" - John Wheeler
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Pre are you saying that gravity cannot cause things to rise? Since you claim that gravity is largely responsible for moving continents, I want you to demonstrate exactly how gravity is responsible for moving the Himalayas a few kilometers vertically (against the force of gravity).
You don't have a clue,.... do you?
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Spreading ridges are areas of higher than average heat flow, which is why they are raised relative to surrounding areas. Partial melting in the LV zone allows lithospheric plates to slip down-slope under gravity.
New material fills the resulting gap. Since the Earth appears to remain at a constant size, this mechanism needs to be balanced.
At destructive boundaries GST has clearly established that cold lithospheric material descends under gravity to considerable depths (cf. an earlier post).
Gravity can, thus, be seen to be the driving force moving the lithospheric plates.
Orogeny is a natural result of collisions between areas of continental crust involving thrusting and uplift.
A quid pro quo question.
If the Himalayas rose suddenly, as a result of an impact; how have rivers managed to cut through the range?
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Pre are you saying that gravity cannot cause things to rise? Is this another question you are not going to answer?
There never was nothing.
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Pre are you saying that gravity cannot cause things to rise? Since you claim that gravity is largely responsible for moving continents, I want you to demonstrate exactly how gravity is responsible for moving the Himalayas a few kilometers vertically (against the force of gravity).
You don't have a clue,.... do you?
Nothing you just wrote answers the question.Gravity can, thus, be seen to be the driving force moving the lithospheric plates. This just proves your "logic" is totally illogical.
So, gravity helps pull a mass downwards and you use this to "explain" how a mass (the Himalayas) moves upward. Maybe you should explain exactly how this happens,... oh,... wasn't that the question in the first place?If the Himalayas rose suddenly, as a result of an impact; how have rivers managed to cut through the range? Large impacts create large cracks in land masses. Rivers use these.Is this another question you are not going to answer? The question is peripheral and depends on context. For example, the moon's gravity causes the sea to rise in the Earth's gravitational well, but the sea falls in the Moon's gravitational well.
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Pre are you saying that gravity cannot cause things to rise? Is this another question you are not going to answer? I've gone through all of preearth's threads. The answer (since you won't get one) is no, he will not answer. Troll of the highest order. Interesting enough ideas, in the fact that they cause people to brush up on tectonics in order to slam his in your face 'I'm right because I say I'm right' mentality.
Laziness breeds innovation
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You don't have a clue,.... do you? Of course, it's easy just to scoff, and never to answer questions, but such tactics are usually the province of the ignorant and bigoted. Large impacts create large cracks in land masses. Rivers use these. You are not a geologist, are you? If you were you would realise that there would be a significant difference between a valley that started its life as a suddenly developed "crack" in an instantaneously formed mountain range, and one that had been gradually eroded by a river over a long period of time.
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Bill S, Pre is no geologist and clearly no other respectable kind of '-ist'. From day one, he's succeeded in setting himself up to look like a bigoted ignoramus. I say 'look like' because nobody can really be that stupid. He is simply, as has been stated many many times, a troll with an attitude. That said, if you want to exercise your right to feed him, go ahead - one would probably miss the entertainment if he were not clinging to SAGG like a limpet in love.
"Time is what prevents everything from happening at once" - John Wheeler
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Bill, troll feeding is not high on my agenda, but the subject interests me, and where else could you find questions like these to ponder. "a limpet in love". Now there's a thought! In fact it could be a good subject for a PhD thesis.
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Bill S, Pre is no geologist and clearly no other respectable kind of '-ist'. From day one, he's succeeded in setting himself up to look like a bigoted ignoramus. I say 'look like' because nobody can really be that stupid. He is simply, as has been stated many many times, a troll with an attitude. That said, if you want to exercise your right to feed him, go ahead - one would probably miss the entertainment if he were not clinging to SAGG like a limpet in love. Ooh, what about "pessimist"? Antagonist, or defeatist? Although those are rarely respectable. Maybe amongst their own kind? Maybe I'm just trying to be an optimist...
Laziness breeds innovation
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Yeap, can't keep away from the place.
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How many members you got now? The scienceagogo staff and two others? Not bad for the last 3 years.
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