Pancake Rocks & Stylobedding

[James Smith]

Well, I should have looked - literally - before I
leaped.  I checked out "pancake rocks" and
"stylobedding" with Google, and found this refers to a
type of erosive weathering, not a type of bedding.
One site stated stylobedding is a phrase used
worldwide for this type of weathering, but I have
never heard it before and have not been able to find
it in geology books or glossaries.  I can see how
comparison or analogy  with the selective dissolution
of limestone that forms stylolites would produce the
name stylobedding for this selective weathering, but
maybe its from the columns that are formed at Pancake
Rocks!


--- James Smith <jsmithjamessmith at YAHOO.COM> wrote:
> The more common term, at least in the States, is
> stylolite; from Greek stylos - column.  A form of
> bedding or stratification where there is irregular
> or
> penetrating contact between beds, as opposed to the
> more typical uniform, often near-planar contact.
> One
> type of stylolite is caused by selective dissolution
> in limestone under pressure, which leaves behind
> thin,
> irregular, wavy layers of less soluble material,
> often
> having a distinct color - these thin layers are
> themselves referred to as stylolites.  On many
> polished limestone slabs, such as on floors or
> walls,
> these stylolites are often what gives the rock its
> character - look for thin, dark, convoluted lines.
>
> Disturbance of layered sediment before it has
> consolidated can cause slumps, bulges, flows,
> injections, and other irregular features that are
> preserved as the material lithifies.
>
>
>
> --- Laurence Horn <laurence.horn at YALE.EDU> wrote:
> > At 6:03 AM +0000 2/28/02, Barry Popik wrote:
> > >    Greetings from Greymouth, New Zealand.  ...
> > >
> > >STYLOBEDDING--This was used on a geological sign
> at
> > the pancake
> > >rocks, but curiously resulted in zero Google
> hits.
> > What's wrong?
> >
> > I'm not sure.  I get 14 google hits on it, all
> with
> > the relevant use.
> >
> > >
> > >POSSYWOOL--From a local publication: "Our
> homegrown
> > wool's never
> > >been cosier since someone started spinning
> plucked
> > possum fur in
> > >with it. ... Nolly Martini at The Willows craft
> > shop in Harihari is
> > >an enthusiast for the fur/wool combo and has
> stocks
> > from socks to
> > >jackets that rival bigger centres at prices that
> > beat them flat.
> > >Part of the reason why Coasters are so keen on
> > using possum fur
> > >could be that these Aussie imports munch so much
> of
> > our native
> > >forest.  As they easily outnumber sheep in New
> > Zealand there's no
> > >prospect of the supply running out."
> > >    Zero Google hits?  What about Nexis?  NZ
> > Dictionary?
> >
> > Well, there are two, or really one (since they're
> > linked).
> > http://www.countryknits.co.nz/merinopossum.html
> >   and yes, it's a blend of merino wool and possum
> > fur.  Sounds cozy,
> > unless you're the sheep or possum that produced
> it.
>
>
> =====
> James D. SMITH                 |If history teaches
> anything
> South SLC, UT                  |it is that we will
> be sued
> jsmithjamessmith at yahoo.com     |whether we act
> quickly and decisively
>                                |or slowly and
> cautiously.
>
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=====
James D. SMITH                 |If history teaches anything
South SLC, UT                  |it is that we will be sued
jsmithjamessmith at yahoo.com     |whether we act quickly and decisively
                               |or slowly and cautiously.

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