EVIDENCE FOR THE PRESENCE OF A CARBONATED MANTLE BENEATH BAS-LANGUEDOC (SOUTH FRANCE) - THE PERIDOTITIC XENOLITHS FROM THE VOLCANIC COMPLEXOF GRAND-MAGNON (LODEVE REGION)
B. Jakni et al., EVIDENCE FOR THE PRESENCE OF A CARBONATED MANTLE BENEATH BAS-LANGUEDOC (SOUTH FRANCE) - THE PERIDOTITIC XENOLITHS FROM THE VOLCANIC COMPLEXOF GRAND-MAGNON (LODEVE REGION), Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes, 323(1), 1996, pp. 33-40
Some spinel Iherzolitic xenoliths scavenged by basanites and leucito-n
ephelinites from Northern Lodevois (Bas-Languedoc, Southern France) di
splay mineralogical evidence of interaction between lithospheric mantl
e and carbonated fluids. This interaction is associated with a recent
thermal event which may be the precursor of the Plio-Quaternary alkali
volcanism of Bas-Languedoc. The carbonated fluid source could be a ca
rbonate-bearing mantle reservoir at depth near 100 km.