Plate Tectonics:- (No credible mechanism - 1.)

So, I said nothing and it generated over 50 odd replies.
http://groups.google.com.au/group/sc...917d5b/?hl=en#
Somebody warned me about getting off-topic in origins, but that's
ridiculous.

Starting over

*PLATE TECTONICS - NO CREDIBLE MECHANISM - 1*

Every part of the cycle is flawed. (Return-cycle first):-
It goes like this:- the ocean plate moves along till it meets a
continent, the continent (/continental lithosphere) bends it down
forcing the slab to sink. .....

*stop right there* Come again?

Sure, ....it's a bit crude (and it is for schools) but that's basically
the reason why consensus says that subduction occurs on the continental
edge where the mantle plate meets the continental lithosphe the
overriding plate pushes it down, converting it to eclogite which makes
it sink (easier) ('ridge-push' later)

1. The crust floats on the mantle
2. The floating crust forces the mantle plate to sink
3. The sinking mantle ('slab' as it is now called) drives convection.
4. Convection drives plate tectonics.
5. Plate Tectonics = moving plates

Ergo the crust floating on the mantle moves the plates around.

Klaus found this offensive when he thought it was me saying it, but we
haven't heard from him since he found out it was jpl-nasa.
http://groups.google.com.au/group/sc...50c373aa5b9d72
Kermit (who is growling for his dinner of Roast Brave Youth) says I'm
'data-mining', talking it out of context. What context? It says what
it says. It matters not what the up-part of the cycle is, unless it
goes down it is not convection. If it just comes up, then it's just
rise (diapiric rise : 'plume'). It has to go back down and around more
than one cycle to be convection - right? And what makes it go down
(on a continental edge)? Well, that's what jpl-nasa / usgs says:- the
floating crust ("floating on the mantle") pushes the mantle slab down.
I think most people here found that silly. Me too. All agreed?

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*Claim:- 1 strike*
Plate Tectonics has no credible mechanism for the return of the
convecting cell on continental margins - or anywhere for that matter.
For if it doesn't get pushed down to the eclogite transition, then it
doesn't sink..
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