Jan 10, 2013 - PalaeoceneâEocene slab breakoff magmatism in South- ... Physical and Geographical Sciences, Keele University, Staffordshire, ST5 5BG, UK.
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Late Cretaceous subduction initiation and Palaeocene–Eocene slab breakoff magmatism in SouthCentral Anatolia, Turkey a
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Ender Sarıfakıoğlu , Yıldırım Dilek & John A. Winchester
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General Directorate of Mineral Reseach & Exploration, Department of Geology, TR-06520, Ankara, Turkey b
Department of Geology and Environmental Earth Science, Miami University, Oxford, OH, 45056, USA c
School of Physical and Geographical Sciences, Keele University, Staffordshire, ST5 5BG, UK Version of record first published: 11 Oct 2012.
To cite this article: Ender Sarıfakıoğlu , Yıldırım Dilek & John A. Winchester (2013): Late Cretaceous subduction initiation and Palaeocene–Eocene slab breakoff magmatism in South-Central Anatolia, Turkey, International Geology Review, 55:1, 66-87 To link to this article: http://dx.doi.org/10.1080/00206814.2012.727566
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International Geology Review Vol. 55, No. 1, 10 January 2013, 66–87
Late Cretaceous subduction initiation and Palaeocene–Eocene slab breakoff magmatism in South-Central Anatolia, Turkey Ender Sarıfakıo˘glua*, Yıldırım Dilekb and John A. Winchesterc a
General Directorate of Mineral Reseach & Exploration, Department of Geology, TR-06520 Ankara, Turkey; b Department of Geology and Environmental Earth Science, Miami University, Oxford, OH 45056, USA; c School of Physical and Geographical Sciences, Keele University, Staffordshire ST5 5BG, UK
Downloaded by [176.42.254.156] at 09:41 18 December 2012
(Accepted 3 September 2012) The Late Cretaceous Alihoca ophiolite in the Inner Tauride suture zone (ITSZ) of South-Central Turkey represents part of a single ophiolitic thrust sheet that originated from the Inner Tauride ocean. The ophiolite contains upper mantle peridotites, cumulate wehrlites, layered-to-isotropic gabbros, and microgabbroic-to-doleritic dikes. An ophiolitic mélange beneath the Alihoca ophiolite includes blocks of limestone, peridotite, dolerite, basalt, and deep-sea sedimentary rocks (radiolarite, chert) in a matrix comprising sheared serpentinite and mudstone. Isotropic gabbro and dolerite dike rocks show enrichment in Sr, K, Rb, Ba, and Th (LILE) and depletion of Ta, Nb, Zr, Ti, and Y (HFSE), indicating an island arc tholeiite (IAT) affinity. Relatively younger dolerite rocks display low TiO2 (
