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Dear colleagues, Hereby we would like to invite you to contribute to a session on subduction dynamics and kinematics to be held at the 33rd IGC in Oslo, Norway, 6-14 August 2008. The session will particularly focus on three-dimensional aspects of subduction, and we encourage submissions dealing with dynamic modelling, tectonic reconstructions, and observational studies (e.g. seismology, mantle tomography). Please note that the deadline for submission of abstracts is the 29th of February 2008. For abstract submission and more information on the 33rd IGC, please go to: www.33igc.org We have four invited speakers for this session: Chris Kincaid, University of Rhode Island, USA Maureen Long, Carnegie Institution of Washington, USA Anne Replumaz, Universite Claude Bernard Lyon 1, France Trond Torsvik, Centre for Geodynamics, Geological Survey of Norway, Norway Please also note that we have been contacted by the Geological Society, London, who are interested in publishing a Geological Society Special Publication from the contributions to the session. Kind regards, Wouter Schellart Dave Stegman Gideon Rosenbaum ----------------------------------------------------------------------------------------------- STT-07 Title: Three-dimensional aspects of subduction zone processes: Insight from dynamic modelling, tectonic reconstructions and observational studies Conveners: Wouter P. Schellart, School of Geosciences, Monash University, Melbourne, Australia Gideon Rosenbaum, School of Physical Sciences, University of Queensland, Australia Dave R. Stegman, School of Mathematical Sciences, Monash University, Melbourne, Australia Description of session: Subduction zones are limited in trench-paralell extent and vary in width from only a few hundred kilometres (e.g. Scotia, Calbria) to more than seven thousand kilometres (South America). In addition, subduction zones display a wide variety in geometry from concave (e.g. Scotia) to sub-linear (e.g. Tonga-Kermadec) to convex (e.g. Central South America). Furthermore, kinematic investigations imply that subduction zones are not static features but migrate laterally due to retrograde and prograde motion of the slab through the mantle, thereby inducing complex three-dimensional flow patterns in the mantle. It is thus evident that subduction and subduction-induced mantle flow are intrinsically three-dimensional processes. To gain new insight into the kinematics and dynamics of subduction and subduction-induced mantle flow, it is thus of primary importance to investigate these processes in three-dimensional space. We therefore seek contributions presenting results from three-dimensional dynamic modelling (both analogue and numerical modelling) of subduction, slab-mantle interaction, subducting plate-overriding plate interaction and backarc extension. We also welcome contributions focusing on tectonic reconstructions of subduction zone evolution on Earth. Finally, we invite contributions from observational studies that focus on the three-dimensional structural architecture of subduction zones and subducted slabs through structural, seismological and tomographic investigations, as well as contributions that concentrate on flow patterns in the mantle surrounding slabs as inferred from seismic anisotropy. -- --------------------------------------------------------------------- Dr. W. P. Schellart QE II Research Fellow Monash Research Fellow School of Geosciences Monash University, Clayton Campus Melbourne, VIC 3800 AUSTRALIA Phone: +61 (0)3 9905 1782 Fax: +61 (0)3 9905 4903 Email: [log in to unmask] http://www.geosci.monash.edu.au/about/directory/schellart/index.html ---------------------------------------------------------------------