Erratum to: A combined rock magnetic and geochemical investigation of upper cretaceous volcanic rocks in the Pontides,Turkey     

M. Cengiz Cinku 《Studia Geophysica et Geodaetica》2010,54(3):529-531

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Erratum to: New paleomagnetic results from Upper Cretaceous arc-type rocks from the northern and southern branches of the Neotethys ocean in Anatolia     

Cinku  Mualla Cengiz  Heller  Friedrich  Ustaömer  Timur 《International Journal of Earth Sciences》2017,106(7):2593-2594

International Journal of Earth Sciences -  相似文献   

A combined rock magnetic and geochemical investigation of Upper Cretaceous volcanic rocks in the Pontides,Turkey     

Mualla Cengiz Cinku  Dieter Rammlmair  Mümtaz Z. Hisarli  Naci Orbay 《Studia Geophysica et Geodaetica》2009,53(4):475-494

Upper Cretaceous volcanic rocks were collected at 24 sites along the Pontides, N-NE Turkey, for rock magnetic and geochemical studies. Rock magnetic and petrographic methods showed that the lavas are characterized predominantly by titanomagnetites with a mixture of pseudo-single and multi-domain grains, whereas in tephrite single domain titanohematite was dominant. Measurements of magnetic susceptibility and the geochemical properties on different volcanic rock types provide important knowledge about the magnetic stability of the rocks. The magnetic properties are interpreted in terms of the composition, concentration, magma generation. Tephrite and phonotephrites with the highest intensities (5200 mA/m) and high magnetic susceptibility values (2585 × 10⁻⁵), largest grain sizes and Fe/Ti values, showing minor or no alteration are the most magnetic stable samples in contrast to dacites with the lowest intensity-magnetic susceptibility (520 mA/m − 573 × 10⁻⁵) and high alteration degree. The basanite samples show very low NRM (48–165 mA/m) but very high magnetic susceptibility (2906–3100 × 10⁻⁵) values suggesting the alteration of Fe-Ti minerals. It is shown that the magnetic properties of the basic to acidic rocks show a systematic variation with magma differentiation and could be related to fractional crystallization. Major and trace elements revealed that the lavas are compatible with complex magma evolution, with mineral phases of olivine+magnetite+clinopyroxene in basic series, amphibole+ +clinopyroxene in intermediate rocks and plagioclase+clinopyroxene+biotite in acidic series.  相似文献   

New paleomagnetic results from Upper Cretaceous arc-type rocks from the northern and southern branches of the Neotethys ocean in Anatolia     

Cengiz Cinku  Mualla  Heller  Friedrich  Ustaömer  Timur 《International Journal of Earth Sciences》2017,106(7):2575-2592

International Journal of Earth Sciences - A paleomagnetic study of Cretaceous arc type rocks in the Central-Eastern Pontides and in the Southeastern Taurides investigates the tectonic and...  相似文献