From: Tectonics & structural geology discussion list [[log in to unmask]] on behalf of Urai, Janos [[log in to unmask]]
Sent: 09 February 2014 10:42
To: [log in to unmask]
Subject: Re: Just some good structural geology to enjoy - from the Daily Mail

Thanks Maarten,

The beautiful pictures serve to emphasise the large contrasts in rheology in evaporite bodies, although most modelling of salt tectonics to date has assumed homogeneous, and often Newtonian viscous rheology. In these pictures, Rock Salt is stronger than Carnallite,  but is other places Rock Salt is clearly softer than Anhydrite.  The shape of the folds can be used to quantify the contrasts in rheology, and such structures at the km- scale can now be studied in 3D seismic cubes.

For those of you interested in this topic, there is a session at the upcoming EGU conference which discusses these rheological contrasts and their effects on the internal structure of deformed salt, and on the initiation of suprasalt sedimentation.
http://meetingorganizer.copernicus.org/EGU2014/session/14740

regards,  Janos

Prof. Dr. Janos L. Urai
Structural Geology, Tectonics and Geomechanics
RWTH Aachen University, Lochnerstrasse 4-20
D-52056 Aachen, Germany
e-mail: [log in to unmask]
www.ged.rwth-aachen.de



This is a very timely post,


On 9 Feb 2014, at 09:56, Piotr Krzywiec <[log in to unmask]>
wrote:

For those interested in this kind of deformations: in S Poland, in front of
the Carpathian FTB, world-famous Wieliczka Salt Mine is located (on the
World Heritage UNESCO list, apparently the oldest - underground exploitation
dates back to the 13th cent. - still active salt mine in the world, although
these days activity means much more tourism rather than salt exploitation as
such ...), and there one can see beautiful examples of salt
thrusting-related structures as well as syn-depositional deformations
developed within thick Miocene salt / evaporites. This place is way more
easily accessible than Yekaterinburg salt mines as there is underground
museum there etc., and there are many international and domestic flights to
Krakow (Wieliczka is located on outskirts of Krakow).

Piotr

***************************************************************************
Dr Piotr Krzywiec, Assoc. Prof.
Institute of Geological Sciences, Polish Academy of Sciences
51/55 Twarda street, 00-818 Warsaw, Poland
email: [log in to unmask]
phone: mobile: +48-502-412126, office: +48-22-6978749


> -----Original Message-----
> From: Tectonics & structural geology discussion list [mailto:GEO-
> [log in to unmask]] On Behalf Of Dirk Nieuwland
> Sent: Friday, February 07, 2014 11:11 PM
> To: [log in to unmask]
> Subject: Re: Just some good structural geology to enjoy - from the Daily
Mail
>
> Thanks Maarten,
>
> These are the best examples of 'viscous rock' that I have seen.
> I shall gratefully use them in my geomechanics training courses.
>
> Regards, Dirk
>
> Dirk Nieuwland
> 4e Binnenvestgracht 13
> 2311NT Leiden
> URL: www.newtec.nl
> T:  +31 (0)71 5216892
> M: +31 (0)621547949
> E: [log in to unmask]
>
>
> On 07 Feb 2014, at 20:53, Krabbendam, Maarten <[log in to unmask]> wrote:
>
>> I'd never thought I'd share something from the Daily Mail with
structural
> geologists, but DO check this out.  Both pretty and interesting...
>>
>> http://www.dailymail.co.uk/news/article-2552245/The-psychedelic-salt-
> Abandoned-Russian-tunnels-mind-bending-patterns-naturally-cover-
> surface.html
>>
>> Photo 10 might be esp useful for a fold analysis exercise
>>
>>
>>
>> Enjoy,
>>
>> Maarten Krabbendam
>>
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