A GEOLOGICAL AND PETROLOGICAL OVERVIEW OF THE HISTORY OF KIRA MOUNTAIN: AN APPROACH TO THE SIMILARITY AND DIFFERENCE OF KARACADAG

Yıl 2019, , 44 - 51, 30.06.2019

Süleyman Polat , Hakan Çoban , Şemsettin Caran

https://doi.org/10.36222/ejt.490696

Öz

The volcanism of Kıra Mountain, at south of
the Bitlis Zagros suture zone (BZK), was erupted from different joint systems
by young extensional tectonic regime. The main geological and petrographic
features of the Late Miocene Kıra Mountain volcanics were investigated as well
as the major oxide, trace element and rare earth element geochemical
characteristics. The Kıra Mountain volcanic products are classified as
basanite, tephrite and trachy-basalt and show alkaline character above the
alkaline-subalkaline separation line. Nonetheless, the peripherals associated
with these volcanics starts with the Miocene aged Şelmo Formation. This
formation is accompanied by Oligocene Germik Formation and Eocene Gercus
Formations. The Karacadag volcanics are adjacent to the Lower, Middle and
Late-Cambrian Sadan, Koruk and Sosink Formations, respectively, predominantly
the Precambrian Derik Formation. In addition to these formations, Late
Cretaceous Karababa and Karbogaz Formations, Late Cretaceous-Paleocene Germav
Formation, Eocene Midyat Formation and Eocene Şelmo Formations are also
contiguous. The phenocrysts of the Karacadag volcanics include olivine,
clinopyroxene, plagioclase and opaque minerals. In the Kıra Mountain volcanics,
olivine, plagioclase and opaque minerals are accompanied by sanidine and
pyroxene. As reported by the geochemical and petrographical studies, The
Karacadag volcanics are mainly classified as basalt and trachy-basalt,
tephrite, basanite and hawaiite. Moreover these lavas are mainly alkaline and present
subalkaline transition. The Karacadag volcanics erupted in three different
stages with different phases, and the Kıra mountain volcanics were found to be
identical with the Siverek stage. 

Anahtar Kelimeler

Kıra Mount, Batman, Karacadag, basalt

Kaynakça

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