Re: Crustal motion and adaption to the Earth's profile

On Jan 6, 5:00 pm, brad <lbjohnson1...@xxxxxxxxx> wrote:
On Jan 4, 1:39 pm, oriel36 <kelleher.ger...@xxxxxxxxx> wrote:





On Jan 4, 12:01 am, don findlay <d...@xxxxxxxxxxxx> wrote:

oriel36 wrote:
On the poetical front,the concept of shifting crustal profiles and its
consequences would help prevent the idea of plate tectonics from
stagnating as a concept even though it  presents precious little
definition at this time other than a possible mechanism for intraplate
events.
ection
That 'poetry' was all passe more than half a century ago.  There was
at least then still some mystery in it.  Plate Tectonics purports to
have given it the rubber stamp (who needs an 'authorized' version? ),
but it hasn't.  The big questions are still all there - and Plate
Tectonics just (in your words) "intellectual rubble".

Naughty,naughty,!You remind me of the true statement  of Galileo,not
just you personally but rather your empirical  kind. -

 "I know; such men do not deduce their conclusion from its premises or
establish it by reason, but they accommodate (I should have said
discommode and distort) the premises and reasons to a conclusion which
for them is already established and nailed down. No good can come of
dealing with such people, especially to the extent that their company
may be not only unpleasant but dangerous." Galileo

It is unfortunate that the balance has shifted and plate tectonics may
go into supporting a 'convection cell' conclusion whereas there is
enough in outlines for plate tectonics to stand on its own without
the need to speculate on an internal mechanism or rather allow enough
data for rotating celestial objects to approach the internal mechanism
with greater certainty.

Don't you ever dare reply to my threads for a long,long while.

if the planets' rotation were the mechanism behind continental drift
it would imply that the plates motion lagged behind the rotation of
the earth ,

Differential rotation in the Earth's interior causes the planet to
deviate from a perfect sphere and subsequently would cause the
fractured crust to move,what is being done is to bring the observed
principles for rotating stellar objects in terms of the correlation
between maximum Equatorial speed and overall shape and apply it to the
Earth's interior .The generalised dynamics are based on the behavior
of a rotating molten/flexible composition regardless of what type of
celestial object -

http://www.noao.edu/outreach/press/pr06/images/vega-vs-sun.gif

You jump to a conclusion on plate motion without bothering to take
into account the reasoning which links planetary shape and crustal
motion and considering that this thread is based on the motion of
crustal plates over the less than spherical geometry of the planet and
subsequently the influence on surface deformations and events,I would
say that you are better off coming back to me with a more
comprehensive understanding of what is going on
conceptually,physically and bottom line.


but the mass of the plates is almost insignificant in
relation to the rest of the planet. ( ave D = 5.5 even without the
crust) that implies  some mechanism applying a force from outside the
surface. is the moon adequate ? the moon certainly doesn't hurt but
the earth is large enough that its own gravity is sufficient to supply
its internal heat sans moon. heat implies convection and that
convection is going to do work. we see that work as PT.- Hide quoted text -

- Show quoted text -

'Convection cells' require no reference to an axially rotating Earth
and can rightly be considered a stationary Earth notion,I would say
that the correlation between crustal motion and planetary shape is
overlooked even without considering the internal mechanism based on
differential rotation but ultimately the whole reasoning fits together
in a very neat package,even with scant details as to the actual
composition and behavior of the rotating interior.

If you are happy with your stationary Earh mechanism of 'convection
cells' then good for you,who am I to disturb such a fine example of an
ad hoc solution to plate motion without taking into account a
wider,more astronomical view.I respect that in order for plate
tectonics to work,some sort of internal mechanism was required
however,judging by the standard of your reasoning,I would say that the
outlines of plate motion which Wegener provided through a multi-
disciplined approach is not served by a narrow view which is mentally
incompetent in ignoring the astronomical components and specifically
rotational dynamics.










.

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