[meteorite-list] HiRes CT - Sikhote-Alin in tree

From: Rob Wesel <nakhladog_at_meteoritecentral.com>
Date: Fri, 14 Jan 2011 21:53:24 -0800
Message-ID: <D889F8F906784D129D5D7B7C2D9E9D91_at_windows9bb74fe>

There are hundreds of images so I just chose one John.

The specimen is cut roughly and it is old, as such it is difficult to count
the rings in real life but the CT image below will give you a good idea.

Here you go

http://www.nakhladogmeteorites.com/catalog/sikhot-tree2.htm

Rob Wesel
www.nakhladogmeteorites.com
www.facebook.com/Nakhla.Dog.Meteorites
www.facebook.com/Rob.Wesel
------------------
We are the music makers...
and we are the dreamers of the dreams.
Willy Wonka, 1971


----- Original Message -----
From: "John Birdsell" <johnbirdsell at yahoo.com>
To: "Rob Wesel" <nakhladog at comcast.net>; <Impactika at aol.com>;
<mail at mhmeteorites.com>; <drvann at sas.upenn.edu>;
<meteorite-list at meteoritecentral.com>
Sent: Thursday, January 13, 2011 8:29 AM
Subject: Re: [meteorite-list] AD(?) - Sikhote-Alin in tree


Hi Rob and thanks for sharing the photos. The low resolution X-ray
tomography
images are a bit difficult to interpret. Perhaps you could post some high
res
images? From what I can see, there do not appear to be very many annual
growth
rings. How many do you count? What year were these harvested?

Also two of the other 'branches' on your site look to me more like root
balls
(burls) with the roots cut off as David Vann has previously pointed out
about
Anne's example. They don't appear to have very many annual growth rings
either...how many do you count? Personally, I suspect that the ones that
look
root-like may be examples of trees that grew on top of a meteorite sometime
after the 1947 fall as opposed to examples of 1947 impacts. Still pretty
cool
though!


Anyone else have any thoughts or different interpretations about Rob's
images?



-John



----- Original Message ----
From: Rob Wesel <nakhladog at comcast.net>
To: Impactika at aol.com; mail at mhmeteorites.com; drvann at sas.upenn.edu;
meteorite-list at meteoritecentral.com
Sent: Wed, January 12, 2011 9:26:15 PM
Subject: Re: [meteorite-list] AD(?) - Sikhote-Alin in tree

Hello all

I picked up Matt Morgan's piece a couple years ago and did have it CT'd.
Quite striking resolution and a non-destructive way to analyze the ring
formation. I have not taken the images to any horticulturist to weigh in on
but I'm willing to make the CT disc available to science for evaluation upon
request. I was given the source by Matt and have no concerns regarding it's
authenticity.

http://www.nakhladogmeteorites.com/catalog/sikhot-tree.htm

Two more tree specimens can be seen here and one of them is headed for CT
due to purchaser request. I left them up but both are sold. Same source for
all of these specimens including Anne's.

http://www.nakhladogmeteorites.com/catalog/SA.htm

Rob Wesel
www.nakhladogmeteorites.com
www.facebook.com/Nakhla.Dog.Meteorites
www.facebook.com/Rob.Wesel
------------------
We are the music makers...
and we are the dreamers of the dreams.
Willy Wonka, 1971


----- Original Message -----
From: <Impactika at aol.com>
To: <mail at mhmeteorites.com>; <drvann at sas.upenn.edu>;
<meteorite-list at meteoritecentral.com>
Sent: Wednesday, January 12, 2011 6:43 PM
Subject: Re: [meteorite-list] AD(?) - Sikhote-Alin in tree


Thank you Matt.

And yes, OOoppps.............
I did write twice the same link, so here is the real link to the picture of
the 2 Vernadsky Sikhote-Alin.

_http://www.impactika.com/images/2s-alin.jpg_
(http://www.impactika.com/images/2s-alin.jpg)

Sorry!

Anne M. Black
_http://www.impactika.com/_ (http://www.impactika.com/)
_IMPACTIKA at aol.com_ (mailto:IMPACTIKA at aol.com)
President, I.M.C.A. Inc.
_http://www.imca.cc/_ (http://www.imca.cc/)



In a message dated 1/12/2011 6:26:26 PM Mountain Standard Time,
mail at mhmeteorites.com writes:
I saw Anne's on display at the Denver show and was convinced it was the
real deal. Plus the dealer who had it is an impeccable source and also a
geologist. I bought one from him a couple of years ago and sold it to
another
dealer (don't want to drop names) who had it examined by an MRI at a
well-known
University. The University, if I recall, said the tree was old enough and
the meteorite did in fact alter the tree growth structure (I.e. It wasn't
hammered into a crack in the tree). Maybe he can chime in...
Matt
------------------------
Matt Morgan
Mile High Meteorites
http://www.mhmeteorites.com
P.O. Box 151293
Lakewood, CO 80215

-----Original Message-----
From: Impactika at aol.com
Sender: meteorite-list-bounces at meteoritecentral.com
Date: Wed, 12 Jan 2011 20:04:10
To: <drvann at sas.upenn.edu>; <meteorite-list at meteoritecentral.com>
Subject: Re: [meteorite-list] AD(?) - Sikhote-Alin in tree

WOW!

Thank you Dr. Vann, Dr. Ted, Dolores, everybody, for all the great posts!
I have learned a lot about trees today! ;-)

Dr Vann, if I was a little closer to Philadelphia, I would be driving right
over to show it to you. Your analysis and interpretation is amazing, and
very helpful. If more pictures could help in any way just say so, I would
be
delighted to send you some close-ups. And just in case, I posted this one
to
my site:
_http://www.impactika.com/images/satree2.jpg_
(http://www.impactika.com/images/satree2.jpg)
Please do let me know what you see there.
Thank you very much.

And for everybody else, and since some did ask, here is a picture of the
two Sikhote-Alins from the Vernadsky Institute:
_http://www.impactika.com/images/satree2.jpg_
(http://www.impactika.com/images/satree2.jpg)
Enjoy.
And again, Thanks everybody!

Anne M. Black
_http://www.impactika.com/_ (http://www.impactika.com/)
_IMPACTIKA at aol.com_ (mailto:IMPACTIKA at aol.com)
President, I.M.C.A. Inc.
_http://www.imca.cc/_ (http://www.imca.cc/)

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Received on Sat 15 Jan 2011 12:53:24 AM PST