Drying and Dying of a Subducted Slab: Coupled Li and B Isotope Variations in Western Anatolia Cenozoic Volcanism
Li isotopes, slab dehydration, Cenozoic volcanism, Mediterranean area
Digital Object Identifier (DOI)
In lavas spanning ~ 10Ma of subduction-related volcanism in Western Anatolia, we observe remarkably similar patterns of δ7Li and δ11B variation. In this setting, magmatism records a transition from calc–alkaline to ultrapotassic character, consistent with overall lower mean extents of melting, and a changing mantle source that reflects a fractionating, higher temperature slab input consistent with the gradual cessation of subduction. Subsequent rift-related intraplate magmatism record δ7Li signatures within the range observed for MORBs and OIBs, indicating an abrupt transition to a mantle source unmodified by subduction.
Citation / Publisher Attribution
Earth and Planetary Science Letters, v. 272, issues 1-2, p. 139-147
Scholar Commons Citation
Agostini, Samuele; Ryan, Jeffrey G.; Tonarini, Sonia; and Innocenti, Fabrizio, "Drying and Dying of a Subducted Slab: Coupled Li and B Isotope Variations in Western Anatolia Cenozoic Volcanism" (2008). Geology Faculty Publications. 132.
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