Search

Now showing items 1-10 of 33

Temporal, geochemical and geodynamic evolution of the Late Cretaceous subduction zone volcanism in the eastern Sakarya Zone, NE Turkey: Implications for mantle-crust interaction in an arc setting

Aydin, Faruk; Saka, Simge Oguz; Sen, Cuneyt; Dokuz, Abdurrahman; Aiglsperger, Thomas; Uysal, Ibrahim; Baser, Rasim (Pergamon-Elsevier Science Ltd, 2020)

The Late Cretaceous Artvin volcanic rocks (LCAVs) from the eastern Sakarya zone (ESZ) of NE Turkey are composed of mafic/basaltic (S1-catak and S2-caglayan) and felsic/acidic (S1-Kizilkaya and S2-Tirebolu) rock types that ...

Geochronology and geochemistry of Eocene-aged volcanic rocks around the Bafra (Samsun, N Turkey) area: Constraints for the interaction of lithospheric mantle and crustal melts

Temizel, Irfan; Arslan, Mehmet; Yucel, Cem; Abdioglu, Emel; Ruffet, Gilles (Elsevier Science Bv, 2016)

Ar-40-Ar-39 age, whole-rock chemical, and Sr-Nd isotope data are presented for the post-collisional, Eocene (51.3-44.1 Ma)-aged volcanic rocks from the Bafra (Samsun) area in the western part of the Eastern Pontides (N ...

Mineralogy, chemistry, and genesis of zeolitization in Eocene tuffs from the Bayburt area (NE Turkey): Constraints on alteration processes of acidic pyroclastic deposits

Cicerali, Derya; Arslan, Mehmet; Yazar, Emel Abdioglu; Yucel, Cem; Temizel, Irfan; Park, Sohyun; Schroeder, Paul A. (Pergamon-Elsevier Science Ltd, 2020)

Eocene vitric tuffs in the Bayburt area (NE Turkey) possess a dacite-rhyodacite composition and contain abundant altered glass shards and flattened fibrous pumice with lesser amounts of pyrogenic minerals (plagioclase, ...

Evolution of K-rich magmas derived from a net veined lithospheric mantle in an ongoing extensional setting: Geochronology and geochemistry of Eocene and Miocene volcanic rocks from Eastern Pontides (Turkey)

Yucel, Cem; Arslan, Mehmet; Temizel, Irfan; Yazar, Emel Abdioglu; Ruffet, Gilles (Elsevier Science Bv, 2017)

The Eocene and Miocene volcanic rocks between the cities of Trabzon and Giresun in the Eastern Pontides (NE Turkey) erupted as mildly and moderately alkaline magmas ranging from silica-saturated to silica-undersaturated ...

Geochemical fingerprints of Late Triassic calc-alkaline lamprophyres from the Eastern Pontides, NE Turkey: A key to understanding lamprophyre formation in a subduction-related environment

Karsli, Orhan; Dokuz, Abdurrahman; Kaliwoda, Melanie; Uysal, Ibrahim; Aydin, Faruk; Kandemir, Raif; Fehr, Karl-Thomas (Elsevier Science Bv, 2014)

The Eastern Pontides in NE Turkey is one of the major orogenic belts in Anatolia. In this paper, we report our new Ar-40/Ar-39 dating, mineral chemistry, major and trace elements and Sr-Nd-Pb isotopic analyses of the ...

Two-and-Three-Dimensional Crustal Thickness of the Eastern Pontides (NE Turkey)

Maden, Nafiz; Gelisli, Kenan; Eyuboglu, Yener; Bektas, Osman (Scientific Technical Research Council Turkey-Tubitak, 2009)

The Eastern Pontide orogenic belt is divided into three subzones ( northern, southern and axial zones) based on present lithologies and facies associations. NE-SW-, NW-SE- and E-W-trending fault systems, which play an ...

Origin of analcimes in the Tertiary volcanic rocks from the Eastern Pontides (NE Turkey): a textural, mineralogical and geochemical approach

Yucel, Cem; Temizel, Irfan; Abdioglu, Emel; Arslan, Mehmet; Yagcioglu, Ufuk Celal (E Schweizerbartsche Verlagsbuchhandlung, 2014)

Silica-undersaturated mafic volcanic rocks of Tertiary age in form of lava flows, dikes and sills of tephritic compositions extend along the northern part of the Eastern Pontides. These rocks typically contain Ca-clinopyroxene ...

Structure and geochemistry of an Alaskan-type ultramafic-mafic complex in the Eastern Pontides, NE Turkey

Eyuboglu, Yener; Dilek, Yildirim; Bozkurt, Erdin; Bektas, Osman; Rojay, Bora; Sen, Cuneyt (Elsevier, 2010)

The Karayasmak ultramafic-mafic association (KUMA) in NE Turkey represents an Alaskan-type, pre-Liassic intrusion in the Pulur metamorphic massif and is one of many such intrusive complexes that were emplaced into the ...

Insight into magma genesis at convergent plate margins - a case study from the eastern Pontides (NE Turkey)

Kaygusuz, Abdullah; Siebel, Wolfgang; Ilbeyli, Nurdane; Arslan, Mehmet; Satir, Muharrem; Sen, Cuneyt (E Schweizerbartsche Verlagsbuchhandlung, 2010)

Convergent plate margins are the most intense areas of granitoid magmatism on Earth. The Eastern Pontide Magmatic Belt in NE Turkey represents a paleo-arc with numerous quartz diorite to syenite intrusions, ranging in age ...

U-Pb geochronology, bulk-rock geochemistry and petrology of Late Cretaceous syenitic plutons in the Golkoy (Ordu) area (NE Turkey): Implications for magma generation in a continental arc extension triggered by slab roll-back

Temizel, Irfan; Arslan, Mehmet; Yucel, Cem; Yazar, Emel Abdioglu; Kaygusuz, Abdullah; Aslan, Zafer (Pergamon-Elsevier Science Ltd, 2019)

Late Cretaceous felsic plutons in the Eastern Pontides orogenic belt of Turkey are found in varying ages, sizes and compositions. The Late Cretaceous syenitic bodies, namely Direkli and Yenikoy Tepe plutons in the Ordu ...