to compressional forces)
Elton
From: Jim Wooddell jim.woodd...@suddenlink.net
To: meteorite-list@meteoritecentral.com
Sent: Wednesday, May 22, 2013 8:31 AM
Subject: Re: [meteorite-list] Chelyabinsk - slickensides or shock planes?
Good morning all!
Can anyone
Anne
Black
Envoyé : mardi 21 mai 2013 23:03
À : jim.woodd...@suddenlink.net; meteorite-list@meteoritecentral.com
Objet : Re: [meteorite-list] Chelyabinsk - slickensides or shock planes?
Does this help Jim?
http://www.impactika.com/CH-126slick.jpg
To me, slickensides look almost like streaks
: meteorite-list-boun...@meteoritecentral.com
[mailto:meteorite-list-boun...@meteoritecentral.com] De la part de Anne
Black
Envoyé : mardi 21 mai 2013 23:03
À : jim.woodd...@suddenlink.net; meteorite-list@meteoritecentral.com
Objet : Re: [meteorite-list] Chelyabinsk - slickensides or shock planes?
Does
Good morning all!
Can anyone explain to me how slickensides are created in bonded matrix
in space in only minute areas of a large body?
Thanks!
Jim Wooddell
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Since the reference to slickensides has been a topic recently, I thought
some would be interested in this nice example I just found being offered
on eBay. It shows the feature very well.
I'm not so sure this picture shows slickensides...if you look closely
at the picture there are veins of melt running from the black
areaI think it is just a break through one of the large melt
pockets that are evident in Chelyabinsk.it does have the look of a
slickenside but they are just
Hi everyone,
Many pieces of broken Chelyabinsk specimens display what appears like
fusion crust over slickensides, but is that what it really is? I've
talked with Blaine Reed and he thinks we're seeing blackish shock
veins (planes really) where the meteorite split along a line of
weakness. He even
Hi Bob and all!
I might be wrong in assuming, but your slickensides sounds like you
are attempting to describe secondary fusion???
We have lots of evidence in various meteorites where they broke apart
for whatever reason at the weak boundaries. For example, Franconia
area meteorites (some) break
Hi Bob, Jim, and list -
One of my Chelyabinsk specimens shows a feature where it appears
to be fractured along a weakened shock vein/point where melt had
filled the vein before the actual splitting apart. The melt is still
very evident covering a large portion of the fresh exposed matrix after
Hi Jim,
Thanks for your reply. No, what I'm seeing is different from the
secondary fusion crusts I typically see, and it's nearly identical on
many pieces. The broken faces have a planar, slickenside texture and
appear coated with gray material that's either fusion crust or as
Blaine thinks, an
Bob, Jim, List,
I have a small piece that displays the slickenside in 3 distinct
locations; it's definitely not secondary fusion crust. Looking
forward to hearing more on the subject.
Michael in so. Cal.
On Tue, May 21, 2013 at 7:29 AM, Jim Wooddell jimwoodd...@gmail.com wrote:
Hi Bob and
Michael and all,
I forgot to add that even small 2-3g Chelyabinsks show this same
slick, grey material coating their broken faces. Can slickensides form
on rocks this small?
Bob
On Tue, May 21, 2013 at 9:43 AM, Michael Mulgrew mikest...@gmail.com wrote:
Bob, Jim, List,
I have a small piece
Bob,
My piece is just over 5g, but it was broken off a slightly larger
piece, probably less than 50g before it broke.
Michael in so. Cal.
On Tue, May 21, 2013 at 7:48 AM, Bob King nightsk...@gmail.com wrote:
Michael and all,
I forgot to add that even small 2-3g Chelyabinsks show this same
Hi All,
Look at the two pictures of the same stone.
This is a fresh broken side with black shock veins on a very light matrix:
- http://sv-meteorites.com/gallery/chelybinsk/02.jpg
And this side is secondary crust over the shock vein:
- http://sv-meteorites.com/gallery/chelybinsk/01.jpg
You can
...)
It's hard to take a picture of because it is so reflective, but it it quite
a beautiful feature of this fall.
Sean.
-Original Message-
From: Sergey Vasiliev
Sent: Tuesday, May 21, 2013 11:16 AM
To: Michael Mulgrew
Cc: meteorite list
Subject: Re: [meteorite-list] Chelyabinsk
Hi Sergey,
Those are nice pictures.
I see the secondary, I do not see slickenside.
I decided to take a look at all the samples for sale on Ebay. There is a
fellow there selling slickenside fragments. Even with those, I say
look closer.
I imagine you have been very busy! That's a good
Hi Jim,
There is a slickensides there, but very difficult to make a picture of
it because of reflection.
Best regards,
Sergey
On Tue, May 21, 2013 at 5:32 PM, Jim Wooddell
jim.woodd...@suddenlink.net wrote:
Hi Sergey,
Those are nice pictures.
I see the secondary, I do not see slickenside.
I
Chelyabinsk is an incredible meteorite with so many lithologies and variations,
it is almost unlike any meteorite I have ever seen. You can have 5 pieces side
by side and swear all are from different meteorite falls. Some pieces are
hardly recognizable as meteorites.
Many pieces exhibit amazing
Sent: Tuesday, May 21, 2013 11:16 AM
To: Michael Mulgrew
Cc: meteorite list
Subject: Re: [meteorite-list] Chelyabinsk - slickensides or shock planes?
Hi All,
Look at the two pictures of the same stone.
This is a fresh broken side with black shock veins on a very light matrix:
- http://sv
Not really a good focus (try full screen!) but at the end you can see
both: slickensides and crust over it on the smaller surface.
http://www.youtube.com/watch?v=IVnerr2giL0feature=youtu.be
Reagrds,
Sergey
On Tue, May 21, 2013 at 5:43 PM, Michael Farmer m...@meteoriteguy.com wrote:
Chelyabinsk
Hi Bob and all!
When I think slickenside, I think of a polished surface where something
rubbed on the surface to polish it. I don't see this in any of the
pictures. My samples do not have thisso I guess I will have to just
buy some more!!! Very interesting. What do you guys suppose did
Hi Jim Baxter,
And, that is what I am not seeing. I'am going to be a very hard sell on
the term slickensides until I see something that scientifically supports
it and why it is there. Do the threads actually appear and are they
threads??
In my mind, the coming apart part would not create a
Jim, there are shock veins and slickensides. They are not the same thing. They
are result of shock but not melting like the full melt veins are.
I have hundreds of pieces with slickensides. I am traveling so I can't show
photos.
Perhaps later.
Michael Farmer
Sent from my iPhone
On May 21,
hi Bobto my knowledge the slickensides most likely form in the
original asteroidal body in space (large collision or impact) and then
are left in the small stones after the atmospheric breakup.
Graham
On Tue, May 21, 2013 at 3:48 PM, Bob King nightsk...@gmail.com wrote:
Michael and all,
I
Welp, I just need to see one up close. But in the mean time here is a
paper on the subject that may be of interest...
http://adsabs.harvard.edu/full/1966Metic...3...31D
Jim
On 5/21/2013 10:26 AM, Michael Farmer wrote:
Jim, there are shock veins and slickensides. They are not the same thing.
-list meteorite-list@meteoritecentral.com
Sent: Tue, May 21, 2013 2:08 pm
Subject: Re: [meteorite-list] Chelyabinsk - slickensides or shock
planes?
Welp, I just need to see one up close. But in the mean time here is a
paper on the subject that may be of interest...
http://adsabs.harvard.edu
Hello All,
We had a similar discussion many, many years ago
(September 2001). Here's a short overview of our results:
Summary:
- broken surface is covered with glossy striations
- slickensides are identified by shiny mirror like surfaces
on an otherwise rough rock
- they are the product of
I found a very nice Chelyabinsk while running to the truck after finding a 1.2
kg stone. I saw it flash in the sun, a half stone with silver slickenside up,
it was like a mirror.
Michael Farmer
Sent from my iPhone
On May 21, 2013, at 4:36 PM, Bernd V. Pauli bernd.pa...@paulinet.de wrote:
of photo...)
It's hard to take a picture of because it is so reflective, but it it quite
a beautiful feature of this fall.
Sean.
-Original Message- From: Sergey Vasiliev
Sent: Tuesday, May 21, 2013 11:16 AM
To: Michael Mulgrew
Cc: meteorite list
Subject: Re: [meteorite-list] Chelyabinsk
Hi Bernd!
Doesn't sound like that discussion came to any conclusion. I think there
was one in 2003 too!
I think this discussion has been going on since prior to 1966, ref the
abstract link I posted.
I do see striations and typically the slickensides I am familiar with
are typically larger,
.
Anne M. Black
www.IMPACTIKA.com
impact...@aol.com
-Original Message-
From: Malvin Bishop Jr magbi...@lowcountry.com
To: meteorite-list meteorite-list@meteoritecentral.com
Sent: Tue, May 21, 2013 3:51 pm
Subject: Re: [meteorite-list] Chelyabinsk - slickensides or shock planes
Bernd, perfect summary. Thanks.
- Original Message -
From: Bernd V. Pauli bernd.pa...@paulinet.de
To: meteorite-list@meteoritecentral.com
Sent: Tuesday, May 21, 2013 2:36 PM
Subject: [meteorite-list] Chelyabinsk - slickensides or shock planes?
Hello All,
We had a similar discussion
- slickensides or shock planes?
Bernd, perfect summary. Thanks.
- Original Message -
From: Bernd V. Pauli bernd.pa...@paulinet.de
To: meteorite-list@meteoritecentral.com
Sent: Tuesday, May 21, 2013 2:36 PM
Subject: [meteorite-list] Chelyabinsk - slickensides or shock planes?
Hello All,
We
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