Re: Scripps/UCSD geophysicist among international team finding evidence of first plate tectonics
- From: "oriel36" <kelleher.gerald@xxxxxxxxx>
- Date: 23 Mar 2007 08:00:52 -0700
On Mar 23, 2:06 pm, "rick++" <rick...@xxxxxxxxxxx> wrote:
I've heard speculation of two pulses of plate tectonics-
the first driven by the heat of planetary accretion
and the current billion or two years by radioative heating.
You have to look at long term polar wander curve velocities
and magnetic quiet periods.
The Earth's considerable rotating mass dictates the orientation axis
and especially the deviation from a perfect sphere perpendicular to
that axis.This used to be called common sense and it was once
prevelent among geologists.
The 'polar wander' guys just do not have the neccessary intutive
intelligence to take into account rotational considerations and the
role the dynamic plays in crustal evolution and motion.
When I look at stationary Earth/convection cells,it brings to mind the
commentary of Copernicus to those who wished to adhere to a stationary
Earth -
" . although they have extracted from them the apparent motions, with
numerical agreement, nevertheless . . . . They are just like someone
including in a picture hands, feet, head, and other limbs from
different places, well painted indeed, but not modeled from the same
body, and not in the least matching each other, so that a monster
would be produced from them rather than a man. Thus in the process of
their demonstrations, which they call their system, they are found
either to have missed out something essential, or to have brought in
something inappropriate and wholly irrelevant, which would not have
happened to them if they had followed proper principles. For if the
hypotheses which they assumed had not been fallacies, everything which
follows from them could be independently verified." De revolutionibus,
1543
Plate tectonics consumes much of its evidence with oceans
rarely lasting more than 5% of earths history and mountains
obilerating earlier ones. A real dective story.
By virtue that the crust is in motion determines that an underlying
mechanism is involved.The clues to the nature of the mechanism are
already there in terms of the correlation between the planet's shape
and rotational dynamics and so what if it ruins all these conceptual
monsters built on convection cells which are merely ill-defined and
ill-considered ad hoc solutions.
I have never once forced anyone to accept a mechanism to explain the
gorgeous surface features but unfortunately it will not stop others
from forcing one on humanity anyway.The problem is the current
mechanism is based on a stationary Earth and does not involve
rotational dynamics of the interior.
This is no taunt but rather a hope that genuine people consider things
more carefully with material that makes outr existence possible.
.
- References:
- Scripps/UCSD geophysicist among international team finding evidence of first plate tectonics
- From: George
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- Re: Scripps/UCSD geophysicist among international team finding evidence of first plate tectonics
- From: rick++
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