Apologies for cross/multiple postings:
A reminder that the 14 January 2008 deadline for submission of abstracts to the mid-ocean ridge –related sessions at the EGU General Assembly, Vienna, 13-18 April 2008 is fast approaching. The sessions (see below) will also form part of the IODP EUROFORUM 2008 programme.
Details of how to submit abstracts and all other information about the conference may be found at http://meetings.copernicus.org/egu2008
Best wishes,
Antony Morris, Andrew McCaig, Gretchen Früh-Green, Adélie Delacour, Nicola Pressling
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GD6: Structure and dynamics of mid-ocean ridges
Session description:
Mid-ocean ridges represent a unique window on mantle processes. After several decades of efforts from the marine geosciences community, many aspects are still debated, including mantle circulation and melting, melt migration and cooling, lower crustal accretion, magmatic or amagmatic extension, evolution of oceanic core complexes, melt distribution and mantle outcropping at ultra-slow ridges, interaction of various scales of mantle convection near hotspots ...etc. The session with bring together scientists from a large variety of disciplines, to compare and review observables and models of the structure and dynamics of mid-ocean ridges and associated mantle sources and circulation.
GD7: Tracing hydrothermal circulation at mid-ocean ridges using geochemistry, geophysics and modelling
Session description:
The circulation of seawater within the axial zones and flanks of mid-ocean ridges: (i) influences heat transport from the lithosphere to the hydrosphere; (ii) modifies the bulk and isotopic chemical composition of the oceanic crust and its physical properties (magnetism, porosity, density and seismic velocity) via fluid-rock interaction and the formation of secondary minerals; and (iii) alters the chemistry of seawater through the expulsion of high to low temperature hydrothermal fluids at various depths. This session will bring together geophysicists, geochemists, mineralogists and modellers interested in the complexities of oceanic hydrothermal circulation. Within this broad remit, papers that aim to improve understanding of seawater circulation pathways through the oceanic crust and the role of hydrothermal cycling in heat, chemical and material fluxes between the lithosphere and the hydrosphere are particularly welcome.
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