Re: Expanding earth miracles


Landy wrote:
"don findlay" <don@xxxxxxxxxxxx> wrote in message
news:1187878316.262198.8700@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Landy wrote:
"don findlay" <don@xxxxxxxxxxxx> wrote in message
news:1187866489.559717.24090@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
..And what is the unpalatable fact?

NooooooOOO Subduction!

Does anybody know *anywhere* where subduction really happens?

How about around most of the Pacific for starters.
But then you knew that.
cheers
Bill

I know it *used to be* called subduction, round the eastern side at
any rate, but no longer since everybody is now taking all their
clothes off and calling it "overriding". And those pikers only going
half way are calling it "Flat Subduction", which isn't subduction at
all.

You?

The only people I've ever called it overriding are you EEers (AFAIK).
Still - it's a relative term. Subduction is the same thing as overriding.
The lower (always oceanic) plate subducts, the upper (sometimes continental,
sometimes oceanic) plate overrides.

And I think you misunderstand the term "flat subduction". "Flat" and
"steep"
are used in a relative sense. The "angle of the dangle" is determined by
the balance
between plate buoyancy and convergence rate, and in turn determines whether
the
upper plate in under compression (orogeny) or extension (rollback).
cheers
Bill

Which is by way of saying what, exactly? That there are no
earthquakes on this 'flat zone' - no structure defining its dip? Only
"convergence rate" (read GPS) and "plate buoyancy"? How is plate
buoyancy determined if there are no travel times from earthquakes to
determine density?

Come clean, Small Gringo, .. We're talking *EARTHQUAKES* determining
STRUCTURE, not earthquakes determining travel times determining
DENSITY determining convection.

Structure. Rates of deformation/ failure/ brittleness. Not density
as an expression of heat.

.

Relevant Pages

  • Re: FAQS - Plate Tectonics
    ... In the "overriding" paradigm, the oceanic plate would buckle intensely ... just prior to the 'subduction' zone, once the oceanic plate had moved far ...
    (sci.geo.geology)
  • Re: Owens Two-Phase Model of Earth Expansion
    ... > subducting plate for hundreds of kms. ... so subduction is translated as "overriding". ... is 'spin, spin, spin'. ...
    (sci.geo.geology)
  • Re: Plate tectonics - Back to the FAQS
    ... > difference between plate tectonics and Earth expansion. ... > subduction, i.e., the proof for ocean floor destruction. ... 'overriding' means Earth expansion. ...
    (sci.geo.geology)
  • Re: Expanding earth miracles
    ... clothes off and calling it "overriding". ... half way are calling it "Flat Subduction", ... The lower plate subducts, the upper (sometimes continental, ...
    (sci.geo.geology)
  • Re: Where does the new land from mid-Atlantic ridge go?
    ... The east coast is a stable interface between continental and oceanic ... There is no subduction currently going on north of the ... Earthquakes are not an unusual occurance for a stable crust. ...
    (sci.geo.geology)