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From: jun...@adelphia.net (June)
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Subject: Re: Fish Fossils - Reply to Keith Littleton's POTM
Date: Thu, 28 Nov 2002 05:08:44 +0000 (UTC)
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Bigdakine <bigdak...@aol.comGetaGrip> wrote:

> >Subject: Re: Fish Fossils - Reply to Keith Littleton's POTM
> >From: Seanp...@juno.com  (Sean Pitman M.D.)
> >Date: 11/26/02 9:03 AM Hawaiian Standard Time
> >Message-id: <fd67d42a.0211261112.154ea...@posting.google.com>
> >
> >> R. Baldwin
> >

[snip Sean's disinformation, obfuscations, and outdated information]


> 
> 
> First off, in 1981, there was no seismic tomography, there was no residual
> sphere analysis etc. Today, there is conclusive evidence that indeed
> subduction takes place, and that in some areas slabs can be traced to
> depths of 1400km or so, at which point they are approximately thermally
> equilibrated with the mantle.
> 
> Why is it Mr. Pittman, that you have no references from the 90's? More
> willful ignorance on your part? Or do you think geophysics research
> stopped circa 1986?

Just some interesting data/pictures, some gathered since the 1980s (I
believe).

I really like this page because it has satellite images of features that
are evidence of plate tectonics.
http://www.seismo.unr.edu/ftp/pub/louie/class/100/plate-tectonics.html

This is just one page from an excellent USGS site re introduction to
plate tectonics.
http://pubs.usgs.gov/publications/text/understanding.html

The Hawaiian hot spot and the sea mount/island chain that is some of the
evidence for movement of the Pacific plate.
http://pubs.usgs.gov/publications/text/Hawaiian.html

Great site with satellite laser ranging (SLR) graphic data showing
worldwide continental movements.
http://cddisa.gsfc.nasa.gov/926/slrtecto.html

Even if we had no clue as to the mechanisms, the evidence for the
existence and movement of plates on the Earth's outer layer is pretty
overwhelming. Features like the Hawaiian Island chain are compelling
evidence of these movements continuing for many millions of years. 



> 
> >
> >At least by the early to late 1980s, no agreement had been reached as
> >to an accepted model of subduction.  Note the conclusion of the 1982
> >U.S. Geodynamics committee workshop: "No generally accepted models
> >exist for the initiation of [subduction]", "rates and mechanisms of
> >assimilation of models for the heating of subducted slabs [are] wholly
> >inadequate", and "gravity profiles across subduction zones and the
> >published geoid data do not reflect the thermally predicted excess
> >mass" (Lithosphere 1983, pp. 28, 29).
> 
> Thats the initiation of subduction Mr. Pittman. Not subduction. But nascent
> subduction zones are known, and we have some pretty good clues as to the
> mechanism.
> See for example Kronke and Walker "Evidence for the Formation of a New Trench
> in the Western Pacific" Eos vol 67., no 12, pgs 145-146, 1986 
> 
> 
> >
> >Then, there are the controversial theories of the Australian geologist
> >S. Warren Carey, which I do not necessarily agree with and which I
> >believe have been generally discredited,
> 
> *quite*
> 
>  but it is interesting how he
> >came to propose his "expanding earth" model (The Expanding Earth,
> >1976. S. Warren Carey. Elsevier Scientific Publishing Company,
> >Amsterdam, The Netherlands. 488 pp.)  He states, "Subduction exists
> >only in the minds of its creators" (p. 16) and "the Pacific subduction
> >zones like all other subduction zones are myths"
> 
> <Gibberish snipped>
> 
> The convergence of Pacific subduction zones is well establish by satellite
> geodesy. Which didn't exist in 1981.
> 
> Only self deluded morons unable to cope with reality believe otherwise. Any
> idiot who can perform a search with google on Plate Tectonics GPS can see this
> for themselves.

Here's just an example.
http://sideshow.jpl.nasa.gov/mbh/series.html
> 
> The simple fact is Mr. Pittman. you have not searched the literature yourself.
> And you certianly haven't burdened yourself with anything current.

Obviously.

> 
> Stuart
> 
> 
> Dr. Stuart A. Weinstein
> Ewa Beach Institute of Tectonics
> "To err is human, but to really foul things up 
> requires a creationist"


-- 
My 2¢          B-}
June