dc.contributor.author | Aydincakir, Emre | |
dc.date.accessioned | 2019-12-10T11:50:06Z | |
dc.date.available | 2019-12-10T11:50:06Z | |
dc.date.issued | 2014 | |
dc.identifier.issn | 0024-4937 | |
dc.identifier.issn | 1872-6143 | |
dc.identifier.uri | https://doi.org/10.1016/j.lithos.2014.08.019 | |
dc.description.abstract | Whole-rock geochemistry, mineral chemistry, the Ar-40-Ar-39 age, and Sr-Nd isotopic data are presented for the Early Eocene non-adakitic volcanic rocks on the eastern corner of the Eastern Pontides orogenic belt (NE Turkey). The tectonic setting of the Eastern Pontides during the Late Mesozoic to Early Cenozoic remains a topic of debate. Here, for the first time, we describe the Early Eocene non-adakitic volcanic rocks from the Eastern Pontides. These rocks contain plagioclase, hornblende phenocrysts, and magnetite/titanomagnetite and apatite microphenocfysts. Geochronology studies based on the Ar-40-Ar-39 ratio of the amphibole separates reveal that the non-adakitic porphyritic volcanic rocks have a crystallization age of 50.04 +/- 0.10 to 50.47 +/- 0.22 Ma (Ypresian). The volcanic rocks show tholeiitic to calc-alkaline affinities and have low-to-medium K contents. They are also enriched in large-ion lithophile elements (LILE), light rare-earth elements (LREE), and depleted in high field strength elements (HFSE), with a no negative Eu anomaly (Eu-n/Eu* = 1.03-1.08) in mantle-normalized trace element spidergrams. The samples (La-cn/Lu-cn = 2.60-428) show low-to-medium enrichment in LREEs relative to HREEs, in chondrite-normalized REE patterns indicating similar sources for the rock suite. These rocks display a range of I-Sr (50 Ma) values from 0.70451 to 0.70485, and (Nd) (50 Ma) 2.9 and 3.7. The main solidification processes involved in the evolution of these volcanics consist of fractional crystallization, with minor amounts of crustal contamination. All of our evidence supports the conclusion that the parental magma of the rocks probably derived from an enriched mantle, previously metasomatized by fluids derived from the subducted slab, in a post-collisional, geodynamic setting. (C) 2014 Elsevier B.V. All rights reserved. | en_US |
dc.description.sponsorship | Scientific Research Foundation of Karadeniz Technical University [2008.112.005.5] | en_US |
dc.description.sponsorship | This study was financially supported by the Scientific Research Foundation of Karadeniz Technical University (Project#: 2008.112.005.5). I appreciate the help of Frank C. Ramos (New Mexico State University) during isotope analyses and Matthew T. Heizler (New Mexico Tech University) for <SUP>40</SUP>Ar/<SUP>39</SUP>Ar geochronology analyses. The author thanks Can Genc and an anonymous reviewer for their accurate and constructive reviews. Editorial handling by Professor Nelson Eby is also highly appreciated. Thanks are due to Mursid Ozturk and Huseyin Asan for their assistances during field work. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier Science Bv | en_US |
dc.relation.ispartof | Lithos | en_US |
dc.rights | Attribution 3.0 United States | * |
dc.rights | info:eu-repo/semantics/closedAccess | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/us/ | * |
dc.subject | [No Keywords] | en_US |
dc.title | The petrogenesis of Early Eocene non-adakitic volcanism in NE Turkey: Constraints on the geodynamic implications | en_US |
dc.type | article | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
dc.description.wospublicationid | WOS:000345179900023 | en_US |
dc.description.scopuspublicationid | 2-s2.0-84907963092 | en_US |
dc.department | Gümüşhane Üniversitesi | en_US |
dc.identifier.volume | 208 | en_US |
dc.identifier.startpage | 361 | en_US |
dc.identifier.doi | 10.1016/j.lithos.2014.08.019 | |
dc.identifier.endpage | 377 | en_US |
dc.authorwosid | AYDINCAKIR, Emre / AAH-2308-2019 | |
dc.authorscopusid | 25225086900 | |