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  • Turkish Journal of Earth Sciences
  • Volume:13 Issue:1
  • Geochemistry and Geochronology of Orthogneisses in the Derbent (Alaflehir) Area, Eastern Part of the...

Geochemistry and Geochronology of Orthogneisses in the Derbent (Alaflehir) Area, Eastern Part of the Ödemifl–Kiraz Submassif, Menderes Massif: Pan-African Magmatic Activity

Authors : O ERSİN KORALAY, O ÖZCAN DORA, FUKUN CHEN
Pages : 37-61
View : 17 | Download : 11
Publication Date : 0000-00-00
Article Type : Research Paper
Abstract :Menderes Masifi’nin Pan-Afrikan yafll› temel kayalar› ve Paleozoyik örtü serileri Ödemifl-Kiraz asmasifi’nin do¤usunda yer alan Derbent insert ignore into journalissuearticles values(Alaflehir); çevresinde yüzlek vermektedir. Pan-Afrikan temele ait granat-mika flistler, ortognayslar ve Triyas yafll› lökokratik ortognayslar›n ilksel kayalar› taraf›ndan intrüze olmufllard›r. Bu çal›flma, Proterozoyik sonunda Menderes Masifi’nin Pan-Afrikan evrimiyle iliflkili olan ortognayslar›n jeokimyas› ve jeokronolojisi üzerinedir. Jeokimyasal veriler ortognayslar›n S-tipli, peralumino ve kalkalkalen karakterli, sin-/posttektonik granitoyidlerden türedi¤ini göstermektedir. Ortognayslardan ayr›lan tipik magmatik ve öz flekilli zirkonlardan Pb-Pb evaporasyon yöntemiyle yafl tayinleri yap›lm›flt›r. ‹ki örne¤in tek zirkon 207Pb/206Pb yafllar› ortalama 561.5±1.8 my ve 570.5±2.2 my olarak elde edilmifltir. Bu yafllar ortognayslar›n ilksel kayalar›n›n sokulum yafl› olarak yorumlanm›flt›r. Menderes Masifi’ndeki bu ana magmatik olay okyanus havzalar›n›n kapanmas› ve Do¤u ve Bat› Gondvana’n›n çarp›flmas›na ba¤lant›l› Pan-Afrikan orojeneziyle iliflkilendirilebilir. 
Keywords : ortognays, jeokimya, PbPb zirkon yafl tayini, Pan Afrikan, Menderes Masifi, Türkiye

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