[CIG-ALL] Fwd: Mantle Plumes From Head to Toe, AGU Fall 2015

[Louise Kellogg]

Forwarded on behalf of the organizers.

> 
> 
> Dear colleagues,
> 
> Peter Van Keken, Eric Mittelstaedt, and myself are organizing an AGU session on mantle plumes (DI009 Mantle plumes from head to toe, with short description below). It is cross-linked with VGP, Tectonics and Seismology.
> We would like to encourage you to submit an abstract in this session.  See you then,
> 
> Kind regards, Peter, Eric and Dominique
> 
> Mantle Plumes From Head to Toe
> 
> Rising mantle plumes carry mass, heat, and chemical anomalies from their ‘toes’ at the base of the mantle to their ‘heads’ near the surface, where plumes spread beneath the lithosphere.  Recent investigations reveal growing evidence for complex plume dynamics near the Core-Mantle Boundary (CMB) and interactions with tectonic plates.  Near the CMB, slow shear velocities suggest the existence of large piles of chemically anomalous material that change plume structure and control plume initiation.  This material may be incorporated into plume stems, altering the composition of hotspot lavas.  Near the surface, spreading plume heads are the source of chemically anomalous hotspot lavas, dynamic topography, and changes to lithospheric deformation and rifting.  This session aims to take a broad view of mantle plumes, looking at advances in understanding of their formation, rise, lithosphere interaction, and eventual effect on surface processes.  We welcome recent work on plumes at all scales and depths.
> 
> Invited speakers:
> Abigail Bull   University of Oslo
> Sally Gibson   Cambridge University
> Barbara Romanowicz UC Berkeley
> 
> https://agu.confex.com/agu/fm15/preliminaryview.cgi/Session7722 <https://agu.confex.com/agu/fm15/preliminaryview.cgi/Session7722>
> 

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