Drying and Dying of a Subducted Slab: Coupled Li and B Isotope Variations in Western Anatolia Cenozoic Volcanism
Document Type
Article
Publication Date
7-2008
Keywords
Li isotopes, slab dehydration, Cenozoic volcanism, Mediterranean area
Digital Object Identifier (DOI)
https://doi.org/10.1016/j.epsl.2008.04.032
Abstract
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.
Was this content written or created while at USF?
Yes
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.
https://digitalcommons.usf.edu/gly_facpub/132
Full Text URL
https://doi.org/10.1016/j.epsl.2008.04.032
