[meteorite-list] Slikensides ?

From: mark ferguson <refam_at_meteoritecentral.com>
Date: Thu Apr 22 10:18:29 2004
Message-ID: <20030221052536.40847.qmail_at_web40206.mail.yahoo.com>

Hi Tom and list

Tom, slickensides (my books spell it differently than
European books) are a feature on a rock face left by
movement of rock against it. Sometimes its smooth,
sometimes not. Most commonly seen at sites of traverse
faulting where the rock on each side of a fault grind
against each other. Its a geological term of which I'm
sure you've seen too many already. A good book to have
at your side sometimes if a dictionary of geological
terms.
Hope this helps a little
Mark
--- Tom aka James Knudson <knudson911_at_frontiernet.net>
wrote:
> Hello Good List, I now know how Slikensides came to
> be, thanks to all the
> experts that hang around this list! BUT, I still
> have not figured out what
> you are talking about? What is a Slikenside? Some
> one asked;
>
> > > > I am looking for information about SLIKENSIDE
> formation.
> > > >
> > > > Does they come from a shock in the cosmos or
> do they form when landing
> on Earth ?
>
> But no one has said what they are!
>
> Thanks, Tom
> The proudest member of the IMCA 6168----- Original
> Message -----
>
>
>
> From: John Divelbiss <j.divelbiss_at_worldnet.att.net>
> To: Bill Mason III <bmason3_at_attbi.com>; Michel
> Franco
> <michel_at_caillou-noir.com>; Meteorite List
> <meteorite-list_at_meteoritecentral.com>
> Sent: Thursday, February 20, 2003 9:13 PM
> Subject: Re: [meteorite-list] Slikensides ?
>
>
> > Bill,
> >
> > Thank you for this informative response. I have a
> nice chunk of Zag that
> has
> > one surface that looked like a slickenslide...but
> I've had doubts because
> it
> > looked smooth/polished, and I was thinking these
> subtle striations should
> be
> > grooves with edges. Not the case by your answer.
> >
> > If I can get a good picture of it this weekend,
> I'll send it to Jeff in
> > Australia and see if he'll put on his site. Thanks
> again for clarification
> > for all of us.
> >
> > John
> >
> > ----- Original Message -----
> > From: "Bill Mason III" <bmason3_at_attbi.com>
> > To: "Michel Franco" <michel_at_caillou-noir.com>;
> "Meteorite List"
> > <meteorite-list_at_meteoritecentral.com>
> > Sent: Friday, February 21, 2003 12:29 AM
> > Subject: Re: [meteorite-list] Slikensides ?
> >
> >
> > > Michel,
> > > Perhaps I can give you an insight into just
> what "slickensides" are
> > all
> > > about. A slickenside is a fault surface or
> fault-plane which exhibits
> > > movement and dislocation,frequently
> warped,broken,and frequently offset.
> > > When you see a true slickensides it is polished
> because the sliding
> > surfaces
> > > are under great pressure as they move slowly,
> opposing surfaces are
> > polished
> > > and often striated grooved.
> > > If you are thinking of impact structure you
> will most likely find
> > > evidence of directional striations as in a
> dynamite exposition but you
> > will
> > > not see the polishing as evidenced in
> slickenside.
> > > Bill Mason
> > >
> > > ----- Original Message -----
> > > From: "Michel Franco" <michel_at_caillou-noir.com>
> > > To: "Meteorite List"
> <meteorite-list_at_meteoritecentral.com>
> > > Sent: Thursday, February 20, 2003 1:00 AM
> > > Subject: [meteorite-list] Slikensides ?
> > >
> > >
> > > > Dear list
> > > >
> > > > I am looking for information about SLIKENSIDE
> formation.
> > > >
> > > > Does they come from a shock in the cosmos or
> do they form when landing
> > on
> > > > Earth ?
> > > >
> > > > Any detail will be appreciated.
> > > >
> > > > Thank's in advance.
> > > >
> > > > Best regards
> > > >
> > > > Michel FRANCO
> > > >
> > > >
> > > > ______________________________________________
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> > > >
>
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> > > >
> > >
> > >
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> > >
>
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> > >
> >
> >
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Received on Fri 21 Feb 2003 12:25:36 AM PST