Hi Sterling,
OK, when I'm wrong, I'm wrong.
Best wishes, Michael
PS: But please, we don't need no stinking badges!
From: Sterling K. Webb sterling_k_w...@sbcglobal.net
Sent: Thursday, September 03, 2009 12:45 AM
To: Meteorite List meteorite-list@meteoritecentral.com
Cc:
http://www.rocksfromspace.org/September_5_2009.html
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hi friends !
for sale :
beautiful endcut of nwa4483, 5.612g, lunar granulitic
for pictures please contact me ! make me a fair offer !
i will sell for a fantastic fair price
!
thanks,
oliver
imca #6131
Well who says giving does not have it's rewards.I just got a 27 gram slice of
SEAGRAVES C, Texas from jimmy harvey.My very own freebie.Now that is nice!A
big thank you to jimmy for his genorocity.I also got a copy of THE ART OF
METEORITE COLLECTING from gary fujihari.Thanks also to gary.Just
Hi, List,
Aluminum 26 decays to Magnesium 26, of course,
not Al-27, impossibly uphill. Thanks to Piper Hollier
for pointing out that cerebral short circuit. Long
emails at one in the morning invite the attack of
the dreaded brain fart.
Aluminum-26 to Mg-26 has a halflife of 710,000
years so its
so informative thank you
The classification of irons is less of a mystery but still needs further
distilling for the masses [e-r-r-r, me] Ahh I see an addendum. perhaps it
will elucidate.
Jerry F
--
From: Sterling K. Webb
May I please inject just the one comment?
In space, the side facing the star (in our case, the sun) can get quite hot,
ie close to the sun --hotter, and further away---less hot.
Conversly--the side away from the star can approach very high negative
degrees, ie 250 to 400 below zero.
This is
The so darn cold thing refers to objects not being lit/heated by their star.
Day sides will heat up until they radiate more heat than they absorb. Night
sides will cool as quickly as physics (and any atmosphere) allows.
If one face of Mars stayed pointing at the sun all the time, it would be
Hi all -
Could the Widmanstatten patterns simply be the result of incredibly high
compression instead?
E.P.
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I was reading a collection of Australian aboriginal folklore, and at the end of
one of the stories was a good description of a bolide.
22. GOONUR, THE WOMAN-DOCTOR
Goonur was a clever old woman-doctor, who lived with her son, Goonur,
and his two wives. The wives were Guddah the red
Forgot the link:
http://www.gutenberg.org/catalog/world/readfile?fk_files=1289968pageno=38
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This is one of the best threads I've seen on the list for quite a while.
Interesting stuff!
So have the Martian Rovers found specific evidence from any changes that may
have taken place on Mars when it cooled? And what happens when the Earth
cools? Will this affect things like the Earth's
Interesting idea, as railroad drawheads and metal presses after repeated
pounding over many years also show stress patterns which resemble
Widmanstatten. So could it be repeated pounding from collisions in addition to
slow cooling which contribute to the variety of patterns? I really have no
I'm not sure 100%, but the liquid state of the iron core with its
corresponding movement is what's responsible for the shifting magnetic north
and south poles of the earth.
Were it to cool to a stable mass (read non molten) I believe
the Earth's magnetic poles would no longer shift.
Just my
Something I don't think anyone has touched on in this thread yet is that the
heating and cooling of objects in space doesn't work the same way we, as highly
modified fish living on the floor of an ocean of air, take for granted. Heat is
transferred in three ways-- conduction, convection, and
On Fri, 04 Sep 2009 13:10:29 -0500, you wrote:
With regard to the breccias, here are some things to look for:
Aspect ratios of clasts in lunar breccias are practically never
greater than 3 to 1.
There is practically no preferred orientation of clasts in a lunar
(or asteroidal) breccia.
The dynamics of planetary magnetic fields are not well understood, but the
most widely accepted theories rely on some sort of dynamo effect, which
requires a liquid iron core. This isn't just a factor in the reversal of the
magnetic field, but in the existence of a significant field at all.
Nevertheless, the Earth would have long ago cooled to a solid interior were
it not for the continued production of interior heat from radioactive decay.
There is more to it than simply the radiative loss of the heat of formation.
This is also a factor in the cooling rate of smaller bodies that
Hi,
Venus they're not sure about.
One thing I think we can be sure about is that
no one will ever use the phrase so darn cold
about Venus, as we stand next to a small creek
running with liquid lead and other low melting
point metals...
There are signs that may be recent activity on
Venus in
Hi Sterling-
From what I've read, there is actually a fair bit of doubt that Venus has a
molten interior. The only reason to think it does is because of its
similarity to Earth (in terms of size and density). But there's a lack of
good understanding about formation details (such as isotope
If it is a meteorite...
http://tinyurl.com/lvfpkn
--
Richard Kowalski
http://fullmoonphotography.net
IMCA #1081
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