[Tectonos] para los estructuralistas trans

[Jose Sellés Martínez]

Reenvio para quienes puedan estar interesados
Josè Sellès-Martìnez

Estimados amigos,
Os informamos acerca de una sesión que estamos
organizando para la próxima Asamblea General de
la EGU, en Viena (27 de abril - 2 de mayo de
2014), que esperamos os resulte de interés.

TS1.2/GD7.9 - TRANSPRESSIONAL/TRANSTENSIONAL
DEFORMATION AT OBLIQUE TECTONIC SETTINGS

Convener: Manuel Díaz-Azpiroz (Universidad Pablo de Olavide, Seville, Spain)

Co-conveners: Dyanna M. Czeck (University of
Wisconsin-Milwakee, USA), Carlos Fernández
(Universidad de Huelva, Spain), Karen Leever
(Universität Potsdam, Germany)

In plate tectonics, the rotational relative
displacements of lithospheric plates imply that
oblique plate boundaries must be the norm, rather
than the exception. Oblique displacement includes
a lateral and an orthogonal component, which can
be convergent (Transpression) or divergent
(Transtension). Therefore, a better understanding
on the kinematics and the mechanics involved in
transpressional and transtensional deformation is
crucial to the knowledge of the processes that
take place at plate tectonic boundaries.
Transpression was first modeled by Sanderson and
Marchini in what has become one of the most cited
papers in Structural Geology. Now, thirty years
after its publication, their proposal is still
current, and many Structural Geology and Tectonic
studies are partly based on it. Subsequent
kinematic models have become progressively more
complex, including transtension (kinematically
equivalent to transpression but with a divergent,
rather than convergent orthogonal strain
component), triclinic symmetries arising from
oblique simple shear and/or coaxial extrusion,
general coaxial strain, deformation zones with
migrating limits, etc. These have helped to
understand many natural deformation zones, at
different tectonic settings, that could not be
explained by more simple models. Still, there are
several aspects, some of them currently ongoing,
that will improve our knowledge of deformation at
oblique tectonic settings, such as heterogeneous
deformation, non-steady strain rates or the
consideration of mechanical aspects. We pretend
to acknowledge Sanderson and Marchini's
contribution, by proposing a broad session
covering different topics related to oblique
tectonics: studies on natural cases of
deformation at oblique tectonic settings,
including oblique convergent orogens, lateral
branches of orogenic arcs, strike-slip settings
or transtensional tectonics; as well as
innovative approaches on numerical (kinematical
and mechanical) and analogue modeling of
transpressional/transtensional deformation. Our
aim is provoke wide discussion that would include
(1) heterogeneous distribution of simple shear
and coaxial components of deformation, (2)
transpressional/transtensional zones showing
strain partitioning at multiple scales, (3) upper
crustal heterogeneous transpression/transtension
or (4) tectonic uplift and basin development
related to transpression/transtension.

We have contact Dave Sanderson, who'd be willing
to join us in Vienna to share his views on this
topic. For any further information about the
session, please contact us: Manuel Díaz-Azpiroz
(<mailto:mdiaazp en upo.es>mdiaazp en upo.es), Dyanna
M. Czeck (<mailto:dyanna en uwm.edu>dyanna en uwm.edu),
Carlos Fernández
(<mailto:fcarlos en dgeo.uhu.es>fcarlos en dgeo.uhu.es),
Karen Leever
(<mailto:karenal en gfz-potsdam.de>karenal en gfz-potsdam.de).

IMPORTANT DEADLINES:

For abstract submission: 16 January 2014, 13.00 CET
For Financial Support Application: 29 November 2013


Links to relevant information:

About our session:
<http://meetingorganizer.copernicus.org/EGU2014/session/14725>http://meetingorganizer.copernicus.org/EGU2014/session/14725

About abastract submission:
<http://www.egu2014.eu/abstract_management/how_to_submit_an_abstract.html>http://www.egu2014.eu/abstract_management/how_to_submit_an_abstract.html

About EGU General Assembly 2014:
<http://www.egu2014.eu/>http://www.egu2014.eu/


Nos vemos en Viena.

Saludos cordiales,

Manuel, Dyanna, Carlos y Karen


-----------------------------------------
Manuel Díaz Azpiroz
Dpt. Sistemas físicos, químicos y naturales
Universidad Pablo de Olavide
Crtra. Utrera, km 1
41013 Sevilla
Tf: +34 954 348351
Fax: 954349814
<mailto:mdiaazp en upo.es>mdiaazp en upo.es
-----------------------------------------

--
=================================================================
Dr. Carlos L. LIESA CARRERA
Area de Geodinamica Interna
Dpto. Ciencias de la Tierra
Facultad de Ciencias
UNIVERSIDAD DE ZARAGOZA
Zaragoza
E-50009, SPAIN

E-mail: carluis en unizar.es
Voice: 34 876 55 34 68
Fax:   +34 976 76 11 06
________________________________________________________________
web: http://wzar.unizar.es/acad/fac/geostruct/unizar.html
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