• Türkçe
    • English
  • English 
    • Türkçe
    • English
  • Login
View Item 
  •   Home
  • Avesis
  • Dokümanı Olmayanlar
  • Makale
  • View Item
  •   Home
  • Avesis
  • Dokümanı Olmayanlar
  • Makale
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Early activity of the largest Cenozoic shield volcano in the circum-Mediterranean area: Mt. Karacadag, SE Turkey

Date
2010
Author
Sharkov, Evgenii
Kavak, Orhan
Keskin, Mehmet
Lustrino, Michele
Mattioli, Michele
Lebedev, Vladimir A.
Chugaev, Andrey
Metadata
Show full item record
Abstract
Volcanic activity at Mt. Karacadag, SE Turkey, developed between similar to 11 and similar to 0.01 Ma. In this paper we investigate the oldest products (older than 2.6 Ma) that created a large volcanic plateau and a N-S aligned volcanic edifice in the form of a shield volcano. These igneous rocks are mildly alkaline to transitional olivine-clinopyroxene phyric basalts with minor hawaiites, basanites and very rare differentiated lithologies (mugearites and benmoreites). The poor correlation of major elements with MgO in these lavas is qualitatively consistent with polybaric depths of magma production, variable degrees of partial melting (from similar to 2 to similar to 10 %), heterogeneous mantle sources and differences in the fractionating crystal assemblage. Primitive mantle-normalized patterns resemble typical anorogenic magma compositions, with peaks at HFSE (Nb, Ta, Hf, Zr) and high HFSE/LILE ratios. REE contents are compatible with derivation of the basanites from a mixed garnet-spinel facies peridotite after similar to 2% partial melting. Alkali basalts are compatible with higher degrees of melting (between 5 and 10 %) from the same type of source. Initial (87)Sr/(86)Sr ratios range from 0.70349 to 0.70522 while those of (143)Nd/(144)Nd range from 0.512853 to 0.512659. Early-stage lavas show higher (87)Sr/(86)Sr and lower (143)Nd/(144)Nd compared to plateau-stage lavas. The Sr-Nd isotopic variations and their relation with major and trace elements cannot be explained by AFC-like (Assimilation and Fractional Crystallization) processes involving average crustal lithologies. More likely, the Sr-Nd isotopic ratios are related to the existence of heterogeneous mantle sources with only minor involvement of AFC-like processes.
URI
http://hdl.handle.net/20.500.12627/63332
https://doi.org/10.1127/0935-1221/2010/0022-2024
Collections
  • Makale [92796]

Creative Commons Lisansı

İstanbul Üniversitesi Akademik Arşiv Sistemi (ilgili içerikte aksi belirtilmediği sürece) Creative Commons Alıntı-GayriTicari-Türetilemez 4.0 Uluslararası Lisansı ile lisanslanmıştır.

DSpace software copyright © 2002-2016  DuraSpace
Contact Us | Send Feedback
Theme by 
Atmire NV
 

 


Hakkımızda
Açık Erişim PolitikasıVeri Giriş Rehberleriİletişim
sherpa/romeo
Dergi Adı/ISSN || Yayıncı

Exact phrase only All keywords Any

BaşlıkbaşlayaniçerenISSN

Browse

All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsTypesThis CollectionBy Issue DateAuthorsTitlesSubjectsTypes

My Account

LoginRegister

Creative Commons Lisansı

İstanbul Üniversitesi Akademik Arşiv Sistemi (ilgili içerikte aksi belirtilmediği sürece) Creative Commons Alıntı-GayriTicari-Türetilemez 4.0 Uluslararası Lisansı ile lisanslanmıştır.

DSpace software copyright © 2002-2016  DuraSpace
Contact Us | Send Feedback
Theme by 
Atmire NV