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| Titel |
Investigation of Helium Isotope Variations of Alkaline Volcanic Rocks in Kutahya Region |
| VerfasserIn |
Duru Cesur, Halim Mutlu, Ercan Aldanmaz, Nilgün Güleç, Finlay M. Stuart |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250127788
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| Publikation (Nr.) |
 EGU/EGU2016-7698.pdf |
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| Zusammenfassung |
| The noble gases, in particular helium isotopes, provide valuable information on the mantle
source of recent basaltic volcanism, especially when linked to trace elements and radiogenic
isotopes. Although the alkaline volcanics in the Kütahya region have been studied in detail by
several works by means of trace element variations, radiogenic dating and isotope
systematics, noble gas isotope compositions that could significantly contribute to dynamics of
volcanism have not been investigated yet. In this study which aims to fill the deficiency of
such data, helium isotope compositions of olivine-basalts in Kütahya region are
measured.
In this study we report helium isotope compositions of olivine from basalts. In olivine-basalts
in alkaline volcanic rocks from the Kütahya region, western Turkey, are investigated.
3He/4He range from 3.0 to 5.19 Ra. These low helium isotope values are most probably
indicative of a lithospheric mantle source. Kütahya alkaline volcanics are enriched in
incompatible elements and show prominent negative Ti, Nd and Ta anomaly. Primitive mantle
normalized trace element concentration patterns clearly display continental crustal
contamination. Chemical compositions and helium isotope systematics imply contribution of
a lithospheric mantle source and contamination of continental crust in the genesis of the
Kütahya alkaline lavas.
Keywords: Kütahya alkaline rocks, olivine, helium isotope, crust-mantle interaction
Acknowledgement: This study has been supported by TUBITAK (Project No. 112Y366) |
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