Petrological evolution of Karliova-Varto volcanism (Eastern Turkey): Magma genesis in a transtensional triple-junction tectonic setting


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Karaoğlu Ö., Gulmez F., Gocmengil G., Lustrino M., Di Giuseppe P., Manetti P., ...More

LITHOS, vol.364, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 364
  • Publication Date: 2020
  • Doi Number: 10.1016/j.lithos.2020.105524
  • Journal Name: LITHOS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED)
  • Keywords: Eastern Turkey, Triple-junction, Collision, Lithosphere, Asthenospheric mantle source, COLLISION-RELATED VOLCANISM, ANATOLIAN HIGH PLATEAU, LAKE VAN, ISOTOPIC GEOCHEMISTRY, QUATERNARY VOLCANISM, TEMPORAL EVOLUTION, GARNET TRANSITION, WESTERN ANATOLIA, MAFIC VOLCANISM, MANTLE SOURCES
  • Istanbul Technical University Affiliated: Yes

Abstract

A diffuse and voluminous (>1400 km(3)) Miocene-Quaternary volcanic activity developed around the Karliova Triple Junction in East Anatolia as a consequence of collisional tectonics among Anatolia, Arabia and Eurasia continental plates. The volcanic rocks of this region are grouped into three phases of activity: 1) Early Phase (Solhan volcanism; similar to 73-4.4 Ma), with emplacement of alkali basalt to trachyte lava flows and pyrodastic successions; 2) Middle Phase (Turnadag and Varto volcanism; similar to 3.6-2.6 Ma), mostly with products with the same compositional range plus minor dadtes and rhyolites, and 3) Late Phase (Ozenc volcanism; similar to 2.6-0.5 Ma), with emplacement of alkali basaltic, hawaiitic and mugearitic lavas and dykes.