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THE AYLI DAG OPHIOLITE SEQUENCE (CENTRAL-NORTHERN TURKEY): A FRAGMENT OF MIDDLE JURASSIC OCEANIC LITHOSPHERE WITHIN THE INTRA-PONTIDE SUTURE ZONE
Date
2012-12-01
Author
Göncüoğlu, Mehmet Cemal
Marroni, Michele
Sayıt, Kaan
TEKİN, UĞUR KAĞAN
Ottria, Giuseppe
Pandolfi, Luca
Ellero, Alessandro
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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The Ayli Dag ophiolites occur as an independent tectonic unit within the Intra-Pontide suture zone, central-northern Turkey. They crop out, together with the other units of the Intra-Pontide suture zone, at the top of the Late Cretaceous-Middle Paleocene foredeep sediments of the Sakarya Terrane. The Ayli Dag ophiolites sequence include in its lower part a mantle sequence consisting of not less than 2-3 km-thick peridotites, topped by 500-600 m-thick layered gabbros with alternating, dm- to m-thick layers of spinet-bearing dunites, melatroctolites, troctolites, ol-gabbros and leucogabbros. The gabbro sequence is over-lain by a sheeted dyke complex, that shows a transition to 100-200 m-thick massive basaltic lava flows followed by 600-800 m-thick massive and pillow lavas and breccias alternating with ophiolite-bearing arenites and cherts.
Subject Keywords
Ophiolites
,
Geochemistry
,
Radiolaria
,
Back-arc basin
,
Intra-Pontide suture zone
,
Turkey
URI
https://hdl.handle.net/11511/31486
Journal
OFIOLITI
DOI
https://doi.org/10.4454/ofioliti.v37i2.407
Collections
Graduate School of Natural and Applied Sciences, Article