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dc.contributor.authorEkici T.
dc.contributor.authorMacpherson C.G.
dc.contributor.authorOtlu N.
dc.contributor.authorFontignie D.
dc.descriptionOxford University Pressen_US
dc.description.abstractPliocene to Quaternary magmatism in the Karacada? Volcanic Complex in SE Turkey occurred in the foreland region of the Arabia-Eurasia collision and can be divided into two phases. The earlier Karacada? phase formed a north-south-trending volcanic ridge that erupted three groups of lavas. The same range of mantle sources contributed to the younger Ovaba? phase lavas, which were erupted from monogenetic cones to the east of the Karacada? fissure. As at several other intraplate localities across the northern Arabian Plate this magmatism represents mixtures of melt from shallow, isotopically enriched mantle and from deeper, more depleted mantle. The deep source is similar to the depleted mantle invoked for other northern Arabian intraplate volcanic fields but at Karacada? this source contained phlogopite. This source could be located in the shallow convecting mantle or may represent a metasomatic layer in the base of the lithosphere. There is no evidence for a contribution from the Afar mantle plume, as has been proposed elsewhere in northern Arabia. Melting during the Karacada? and Ovaba? phases could have resulted from a combination of upwelling beneath weak or thinned lithosphere and restricted local extension of that weakened lithosphere as it collided with Eurasia. Tension associated with the collision focused magma of the Karacada? phase into the elongate shield volcano of Mt. Karacada?. The northern end of the fissure accommodated more extensive differentiation of magma, with isolated cases of crustal contamination, consistent with greater stress in the lithosphere closest to the collision. Most magma batches of the Karacada? and Ovaba? phases differentiated by fractional crystallization at ~5MPa, near the boundary between the upper and lower crust. Magma batches dominated by melt from garnet lherzolite show evidence for restricted amounts of differentiation at ~22?5MPa, which is close to the base of the lithospheric mantle. © The Author 2014. Published by Oxford University Press. All rights reserved.en_US
dc.description.sponsorshipTaner Ekici acknowledges financial support from TUBITAK (Project No. 107Y025) to conduct fieldwork and analytical work. Mehmet U«lku« of MTA Diyarbak|r supported fieldwork in SE Turkey.en_US
dc.description.sponsorshipEkici, T.; Department Of Geological Engineering, University Of Cumhuriyet, 58140, Sivas, Turkey; email: tanere7@gmail.comen_US
dc.subjectFissure volcanoen_US
dc.titleForeland magmatism during the Arabia-Eurasia collision: Pliocene-Quaternary activity of the Karacada? volcanic complex, SW Turkeyen_US
dc.relation.journalJournal of Petrologyen_US
dc.contributor.departmentEkici, T., Department Of Geological Engineering, University Of Cumhuriyet, 58140, Sivas, Turkey -- Macpherson, C.G., Department Of Earth Sciences, University Of Durham, Durham Dh1 3Le, United Kingdom -- Otlu, N., Department Of Geological Engineering, University Of Cumhuriyet, 58140, Sivas, Turkey -- Fontignie, D., Department Of Mineralogy, University Of Geneva, Ch-1205 Geneva, Swedenen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US

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