Metasomatism in oceanic and continental lithospheric mantle: introduction

Metasomatism in oceanic and continental lithospheric mantle: introduction

s CD. BODINIER, J.-L., MENZIES, M. A., SHIMIZU, N., FREY, F. A. & MCPHERSON, E. 2004. Silicate, hydrous and carbonate metasomatism at Lherz, France: contemporaneous derivatives of silicate melt–harzburgite reaction. Journal of Petrology, 45, 299–320. BONADIMAN, C., BECCALUVA, L., COLTORTI, M. & SIENA, F. 2005. Kimberlite-like Metasomatism and ‘garnet signature’ in spinel-peridotite xenoliths fr...

Oceanic slab melting and mantle metasomatism.

Modern plate tectonic brings down oceanic crust along subduction zones where it either dehydrates or melts. Those hydrous fluids or melts migrate into the overlying mantle wedge trigerring its melting which produces arc magmas and thus additional continental crust. Nowadays, melting seems to be restricted to cases of young (< 50 Ma) subducted plates. Slab melts are silicic and strongly sodic (t...

The continental lithospheric mantle: characteristics and significance as a mantle reservoir.

The continental lithospheric mantle (CLM) is a small-volumed (ca. 2.5% of the total mantle), chemically distinct mantle reservoir that has been suggested to play a role in the source of continental and oceanic magmatism. It is our most easily identifiable reservoir for preserving chemical heterogeneity in the mantle. Petrological and geophysical constraints indicate that the maximum depth of th...

Petrological evolution of the European lithospheric mantle: introduction

s of 33rd International Geological Congress, 6–14 August 2008, Oslo. Coltorti, M., Bonadiman, C., O’Reilly, S. Y., Griffin, W. L. & Pearson, N. J. 2010. Buoyant ancient continental mantle embedded in oceanic lithospheric (Sal Island, Cape Verde Archipelago). Lithos, doi: 10.1016/j.lithos.2009.11.005. Davies, G. R., Nixon, P. H., Pearson, D. G. & Obata, M. 1993. Tectonic implications of graphiti...

Role of ductile strain localization in the lithospheric mantle on continental rifting