Rutile geochemistry and thermometry of eclogites and associated garnet-mica schists in the Biga Peninsula, NW Turkey

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dc.authoridTopuz, Gultekin/0000-0001-8690-4614
dc.authoridZack, Thomas/0000-0003-4747-4134
dc.contributor.authorSengun, Firat
dc.contributor.authorZack, Thomas
dc.contributor.authorTopuz, Gultekin
dc.date.accessioned2025-01-27T21:05:48Z
dc.date.available2025-01-27T21:05:48Z
dc.date.issued2017
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractIn northwest Turkey, high-pressure metamorphic rocks occur as exotic blocks within the cetmi m lange located on the south of the Biga Peninsula. Rutile chemistry and rutile thermometry obtained from the eclogite and associated garnet-mica schist in the cetmi m lange indicate significant trace element behaviour of subducted oceanic crust and source-rock lithology of detrital rutiles. Cr and Nb contents in detrital rutile from garnet-mica schist vary from 355 to 1026 pzig and 323 and 3319 g/g, respectively. According to the Cr-Nb discrimination diagram, the results show that 85% of the detrital rutiles derived from metapelitic and 15% from metamafic rocks. Temperatures calculated for detrital rutiles and rutiles in eclogite range from 540 degrees C to 624 degrees C with an average of 586 degrees C and 611 degrees C to 659 degrees C with an average of 630 degrees C at P = 2.3 GPa, respectively. The calculated formation temperatures suggest that detrital rutiles are derived from amphibolite- and eclogite-facies metamorphic rocks. Amphibolite-facies rocks of the Kazdag Massif could be the primary source rocks for the rutiles in the garnet-mica schist from the cetmi m lange. Nb/Ta ratios of metapelitic and metamafic rutiles fall between 7-24 and 11-25, respectively. Nb/Ta characteristics in detrital rutiles may reflect a change in source-rock lithology. However, Nb/Ta ratios of rutiles in eclogite vary from 9 to 22. The rutile grains from eclogites are dominated by subchondritic Nb/Ta ratios. It can be noted that subchondritic Nb/Ta may record rutile growth from local sinks of aqueous fluids from metamorphic dehydration. (C) 2017 Elsevier GmbH. All rights reserved.
dc.description.sponsorshipScientific and Technological Research Council of Turkey [TUBITAK/114Y834]; Canakkale Onsekiz Mart University Scientific Research Coordination Unit [FBA-702-2016]
dc.description.sponsorshipThis study was supported by the Scientific and Technological Research Council of Turkey (TUBITAK/114Y834) and Canakkale Onsekiz Mart University Scientific Research Coordination Unit (grant number FBA-702-2016). Horst Marschall and Guido Mein hold are acknowledged for their constructive reviews and comments, which significantly helped to modify the manuscript. We thank A. Holzheid for careful editorial handling.
dc.identifier.doi10.1016/j.chemer.2017.07.001
dc.identifier.endpage515
dc.identifier.issn0009-2819
dc.identifier.issn1611-5864
dc.identifier.issue3
dc.identifier.scopus2-s2.0-85024122420
dc.identifier.scopusqualityQ1
dc.identifier.startpage503
dc.identifier.urihttps://doi.org/10.1016/j.chemer.2017.07.001
dc.identifier.urihttps://hdl.handle.net/20.500.12428/27800
dc.identifier.volume77
dc.identifier.wosWOS:000416196500010
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Gmbh
dc.relation.ispartofChemie Der Erde-Geochemistry
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectRutile
dc.subjectSource-rock lithology
dc.subjectZr-in-rutile
dc.subjectHigh-pressure
dc.subjectNW Turkey
dc.titleRutile geochemistry and thermometry of eclogites and associated garnet-mica schists in the Biga Peninsula, NW Turkey
dc.typeArticle

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