(with apologies for multiple postings)
Dear colleagues,
With the abstract deadline of 10 January just a few days away we would
like to encourage you to submit an abstract to our session 'Subduction
zone dynamics from the surface to the lower mantle' at the EGU meeting.
Our session is part of an exciting subduction zone programme which will
surely generate great discussions.
We are pleased to announce our two invited presenters:
Diane Arcay (Geosciences Montpellier, France)
Vlad Manea (Computational Geodynamics Laboratory, UNAM, Mexico)
and hope you will join them in presenting your work on subduction zones!
More information on our session can be found below and on:
http://meetingorganizer.copernicus.org/EGU2011/session/6973
The EGU General Assembly is from 3 to 8 April 2011 and the abstract
deadline is 10 January 2011.
We look forward to discussing subduction zone dynamics with you!
Susanne, Francesca and Jeroen
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Subduction zone dynamics from the surface to the lower mantle
Conveners: Susanne Buiter, Francesca Funiciello and Jeroen van Hunen
Subduction drives plate tectonics, forms continents, and transports
surface material to the deep Earth. Therefore, it is arguably the most
important geodynamical and geochemical phenomenon on Earth.
Seismological data show a fascinating range in shapes of subducting
slabs with structures interpreted as resulting from roll-over, buckling,
dripping, draping or avalanching through the base of the upper mantle.
Arc volcanism illustrates the complexity of geochemical and petrological
phenomena associated with subduction. Surface topography provides
insight in the orogenic processes related to subduction and continental
collision. Numerical and laboratory modelling studies have successfully
reproduced many of these shapes and processes, but with different
technical approaches, set-ups, inputs and material properties, and a
consistent picture has so far not emerged.
In this session, we aim to follow subducting lithosphere on their
journey from the surface down into the Earth's mantle. Examples of
questions we seek to address are: How do near-surface processes, such as
erosion and accretionary wedge tectonics, influence dynamics of slabs in
the mantle? What is the importance of subducting seamounts, LIPs, and
ridges? What is the role of phase transitions and the migration of
fluids and melts? Which are the controlling parameters for slab dip
angle? What is the fate of subducted crust, sediments and volatiles?
What is the influence of the mantle wedge and the back-arc on slab
dynamics? How does slab break-off occur? How are mantle wedge
geodynamics and geochemistry linked?
With this session we aim to further our knowledge about subduction
processes by combining insights from many different disciplines.
Therefore, we invite contributions from a wide range of disciplines,
including and certainly not limited to geodynamics, modelling,
geochemistry, mineralogy, petrology and seismology, to discuss
subduction zone dynamics at all scales from the surface to the lower
mantle.
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