Trace-element modeling and source constraints for tholeiitic and calc-alkaline basalts from a depleted asthenospheric mantle source, Mt. Erciyes Stratovolcano, Turkey


Kurkcuoglu B. , Sen E. , Temel A. , Aydar E. , Gourgaud A.

INTERNATIONAL GEOLOGY REVIEW, cilt.43, sa.6, ss.508-522, 2001 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 43 Konu: 6
  • Basım Tarihi: 2001
  • Doi Numarası: 10.1080/00206810109465029
  • Dergi Adı: INTERNATIONAL GEOLOGY REVIEW
  • Sayfa Sayıları: ss.508-522

Özet

The Mt. Erciyes stratovolcano was built up in an intraplate tectonic environment as a consequence of Eurasian and Afro-Arabian continental collision. However, the volcanic products generally exhibit a calc-alkaline character; minor amounts of tholeiitic basalts are also present. Tholeiitic basalts show high Fe2O3, Mgo, CaO, low K2O, and depleted Ba, Nb, and especially Rb (2.3-5.97 ppm) contents, low Sr-87/Sr-86(0.703344-0.703964), and high Nd-143/Nd-144 (0.512920-0.512780) isotopic ratios. These compositional features show that they were derived from a depleted asthenospheric mantle source, possibly a MORB-like source component. In contrast, calc-alkaline basaltic rocks exhibit relatively high large-ion-lithophile and high-field-strength elements, high Sr-81/Sr-86 (0.704591-0.70507) and low Nd-143/Nd-114 (0.51272-0.512394) isotopic ratios.