Melting of crustal xenoliths within ascending basalt: Example from the Kula volcanic field, western Anatolia, Turkey

Bayhan H., Aydar E., ŞEN E., Gourgaud A.

COMPTES RENDUS GEOSCIENCE, cilt.338, sa.4, ss.237-243, 2006 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 338 Sayı: 4
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.crte.2005.12.005
  • Dergi Adı: COMPTES RENDUS GEOSCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.237-243
  • Hacettepe Üniversitesi Adresli: Evet

Özet

During its storage or ascent, basaltic magma inevitably interacts with the surrounding rocks. In this study, schist xenoliths incorporated within ascending basalt are examined. Heating of the xenoliths combined with decompression effect of rapid magma uprise led to dehydration melting of hydrous minerals producing hercynitic spinel, melt, sillimanite and Fe-Ti oxides. The melt is rhyolitic, strongly peraluminous (1.77 < A/CNK < 2.35) and corundum normative. It may contain up to 8 wt% FeO1. It occurs between the foliation planes and in the intragranular environment. Dehydration melting of micas in the schist is probably related to combined effects of heating by basaltic magma and decompression due to the rapid rise. Melting of xenoliths was a progressive process at low pressure.