Re: Science Disproves Evolution
- From: Jon Fleming <jonf@xxxxxxxxxxxxxxxxxx>
- Date: 3 Jan 2008 18:41:01 -0600
On Thu, 03 Jan 2008 14:50:28 -0800, John Harshman
<jharshman.diespamdie@xxxxxxxxxxx> wrote:
Pahu78@xxxxxxxxx wrote:
Crater Creep
A tall pile of tar will slowly flow downhill, ultimately spreading
into a nearly horizontal sheet of tar. Most material, under pressure,
"creeps" in this way, although rocks deform very, very slowly.
Calculations show that the growing upward bulges of large crater
floors on the Moon should occur to their current extent in only 10,000
to 10,000,000 years (a). Large, steep-walled craters exist even on
Venus and Mercury, where gravity is greater, and temperatures are hot
enough to melt lead. Therefore, creep rates on those planets should be
even greater. Most large craters on the Moon, Venus, and Mercury are
thought to have formed more than 4,000,000,000 years ago. Because
these craters show no sign of "creep," these bodies seem to be
relatively young.
a. Glenn R. Morton, Harold S. Slusher, and Richard E. Mandock, "The
Age of Lunar Craters," Creation Research Society Quarterly, Vol. 20,
September 1983, pp. 105-108.
Hey, guys, look! Glenn Morton is being cited to show that the earth is
less than 10,000 years old.
Let's see what Glenn has to say about that: "This view is erroneous in
that it ignores the extreme temperature dependence of viscosity on
temperature. At lunar temperatures, the viscosity would be such that a
lunar crater could stand for billions of years. Furthermore, if the
concepts utilized in this article were true (i.e. that glass could flow)
astronomers would have to re-grind their lenses and mirrors every few
years. This doesn't happen. This argument was used in Paul Ackerman's
book, It's a Young World After All (Baker, 1986), p. 52-53. It is an
erroneous argument that I wish I had never come up with. "
http://home.entouch.net/dmd/publi.htm
Pahu's posting the same crap at EvC. See
<http://www.evcforum.net/cgi-bin/dm.cgi?action=msg&f=3&t=124&m=148#148>.
From <http://www.lpl.arizona.edu/~matthewt/yeclaimsbeta.html>:
"Moon Rock Viscosity [OAB 56] In a paper published in a young-Earth
journal (Creation Research Society Quarterly, v.20, pp.105-108 (Sept
1983)), former young-Earth advocate Glenn R. Morton attempted to
calculate the time it would take for lunar craters to be erased by the
slow flow of rock. The central parameter in the calculation is the
viscosity of the rock (its resistance to flow). As a rock's
temperature approaches its melting point, its viscosity becomes low
enough (although still a trillion trillion times higher than that of
honey) for some flow to be observed over long time periods. This
phenomenon allows, for example, convection in the Earth's mantle,
which is crucial to Plate Tectonics, and in turn to many geophysical
processes. Viscous flow can also be observed in many other solids,
from glass to Silly Putty, but always at temperatures that are rather
close to the melting point of the solid. Morton attempted to apply
this process to rocks on the surface of the Moon. However, by failing
to understand viscosity's extreme dependence on temperature, he
grossly underestimated the viscosities of lunar rocks. Morton assumed
that the viscosity of the Moon's surface rocks would be comparable to
the highest measured rock viscosities (those of Earth's mantle).
However, since a rock's viscosity increases exponentially as its
temperature falls (and the Earth's mantle is very hot while the Moon
is very cold), the viscosities of moon rocks are exponentially higher
than the viscosities in Earth's mantle. In fact, moon rock viscosities
are so high that they are practically infinite, meaning that no flow
will occur (i.e., rocks are more likely to break or fracture than to
flow). Since the flow of rock is basically impossible at the
temperatures that exist on the Moon's surface, there will be no
relaxation of lunar craters, and thus no problem with the age of the
Moon."
--
Jon Fleming
Replabe nospam with group to email
.
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