Dear Tecto Colleagues,


Does someone know a good alternative for structural measurments with a compass when dealing with very high magnetic rocks (0,1- 0,3 SI and high remanent magnetisation)?


Cheers,

Stefan



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Dr. Stefan Luth (statsgeolog)
Sveriges geologiska undersökning (SGU)
Geological Survey of Sweden
P.O. Box 670, SE-751 28 Uppsala, Sweden
Tel: +46 (0)18 17 90 82
Mail to: [log in to unmask]
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Från:        Plümper, dr. O. (Oliver) <[log in to unmask]>
Till:        [log in to unmask],
Datum:        2013-02-26 10:51
Ärende:        Call for abstracts Goldschmidt Session 22d: From chemical reactions to fracturing in rocks: mechanisms and physico-chemical feedbacks
Sänt av:        Tectonics & structural geology discussion list <[log in to unmask]>

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Dear Colleagues,
 
We would like to bring the following session at the Goldschmidt 2013 (Florence, Italy, August 25-30th) to your attention and encourage you to submit an abstract.
 
 
Session 22d: From chemical reactions to fracturing in rocks: mechanisms and physico-chemical feedbacks
 
!!!!The deadline for Abstract Submission is April 12th 2013 at 23:59 (GMT)!!!!
 
 
Conveners:
Oliver Plümper (Department of Earth Sciences, Utrecht University, The Netherlands)
François Renard (Institut des Sciences de la Terre, University Joseph Fourier, Grenoble, France)
Nicolas Brantut (Rock and Ice Physics Laboratory, University College London, UK)
 
 
Keynote speaker:
Peter Kelemen (Lamont-Doherty Earth Observatory, Columbia University, New York, USA)
 
Invited speaker:
Anja Røyne (Physics of Geological Processes (PGP), University of Oslo, Norway)
 

Session description:
The coupling between chemical reactions and rock deformation has essential repercussions for many geological systems. These feedback reactions not only affect porous rocks but aid porosity and permeability generation in low-permeability rocks, fundamentally influencing element transport properties and rheological behavior. These processes can be observed in a wide variety of systems, some examples being (1) peridotite hydration to form serpentinites, (2) the dehydration of serpentinite during subduction or clays during diagenesis, (3) rock weathering at the Earth’s surface, (4) maturation and primary migration of organic matter in sedimentary basins, (5) in-situ carbon dioxide fixation via mineral carbonation, (6) salt damage and (7) decomposition reactions of sedimentary rocks during the emplacement of magmas. In other words, any mineral (replacement) reaction that generates porosity at the reaction interface or causes fracturing due to volume changes. This session seeks to address the processes that couple rock deformation and geochemical reactions, as a result of phase transitions or (fluid-mediated) mineral reactions, with investigations from the Earth’s interior to the surface. Contributions from field observations, microstructural descriptions, laboratory experiments, and numerical or theoretical approaches are welcome.
More information is available at:
http://goldschmidt.info/2013/
 
 
We are looking forward to meeting you in Florence and apologizes for multi-posting.
 
 
On behalf of the conveners
 
Regards
 
Oliver Plümper
 
 
 
Dr. Oliver Plümper|Assistant Professor|Department of Earth Sciences|Utrecht University|Budapestlaan 4, 3584 CD Utrecht|tel. (030)2531199