[meteorite-list] Re: Slickensides ?

From: Robert Verish <bolidechaser_at_meteoritecentral.com>
Date: Thu Apr 22 10:18:29 2004
Message-ID: <20030221041900.93266.qmail_at_web80408.mail.yahoo.com>

Given what Mark says about "slickensides", maybe they
are in meteorites because, back when it was part of an
asteroid, it underwent deformation from strong tidal
forces as a result of a close-call with a large
planetary body like Jupiter.

In any case, until we come up with a better term, I
guess we will have to continue to use that "s-word" -
(slickenside).

Bob V.

Oh, yeah! Meteorites are cool because they have
"Slickensides"!

So-what-do-you-think?

"GONGGGGG"!!

--__--__--

Message: "Meteorite List" Archives
From: "Bill Mason III" <bmason3_at_attbi.com>
To: "Michel Franco" <michel_at_caillou-noir.com>,
        
Subject: Re: [meteorite-list] Slikensides ?
Date: Thu, 20 Feb 2003 21:29:37 -0800

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
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Received on Thu 20 Feb 2003 11:19:00 PM PST