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Selected Works of Jeffrey Ryan
Article
Drying and Dying of a Subducted Slab: Coupled Li and B Isotope Variations in Western Anatolia Cenozoic Volcanism
Earth and Planetary Science Letters
  • Samuele Agostini, CNR - Istituto di Geoscienze e Georisorse
  • Jeffrey G. Ryan, University of South Florida
  • Sonia Tonarini, CNR - Istituto di Geoscienze e Georisorse
  • Fabrizio Innocenti, University of Pisa
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Document Type
Article
Publication Date
7-1-2008
Keywords
  • Li isotopes,
  • slab dehydration,
  • Cenozoic volcanism,
  • Mediterranean area
Digital Object Identifier (DOI)
https://doi.org/10.1016/j.epsl.2008.04.032
Disciplines
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.

Citation / Publisher Attribution

Earth and Planetary Science Letters, v. 272, issues 1-2, p. 139-147

Full Text URL
https://doi.org/10.1016/j.epsl.2008.04.032
Citation Information
Samuele Agostini, Jeffrey G. Ryan, Sonia Tonarini and Fabrizio Innocenti. "Drying and Dying of a Subducted Slab: Coupled Li and B Isotope Variations in Western Anatolia Cenozoic Volcanism" Earth and Planetary Science Letters Vol. 272 Iss. 1-2 (2008) p. 139 - 147
Available at: http://works.bepress.com/jeffrey_ryan/43/