Yazar "Kandemir, Raif" için listeleme
-
Late Jurassic Paleotethyan oceanic slab break-off revealed by Sr-Nd-Hf isotopes of Na-rich adakitic granites from northwestern Turkey
Karslı, Orhan; Şengün, Fırat; Santos, Jose Francisco; Uysal, İbrahim; Dokuz, Abdurrahman; Aydın, Faruk; Kandemir, Raif (Elsevier, 2021)The Mesozoic geodynamic evolution of the Paleotethys Ocean is critical but a poorly known piece of the geological history of the Sakarya Zone, north Turkey. Here, we describe new integrated research of zircon U-Pb ... -
Latest Cretaceous "A(2)-type" granites in the Sakarya Zone, NE Turkey: Partial melting of mafic lower crust in response to roll-back of Neo-Tethyan oceanic lithosphere
Karslı, Orhan; Aydın, Faruk; Uysal, İbrahim; Dokuz, Abdurrahman; Kumral, Mustafa; Kandemir, Raif; Ketenci, Murat (Elsevier Science Bv, 2018)An integrated study of comprehensive geochronological, geochemical, and Sr-Nd-Hf isotopic data was undertaken for the A-type Topcam pluton that intruded within the Sakarya Zone (NE Turkey) with the aims of elucidating its ... -
The multidisciplinary approaches on facies developments and depositional systems of the Bahcecik travertines, Gumushane, NE-Turkey
Kandemir, Raif; Tagliasacchi, Ezher; Kayseri Özer, Mine Sezgül; Şaffak, Dilek; Koroğlu, Fatih; Hu, Hsun-Ming; Shen, Chuan-Chou (Scientific Technical Research Council Turkey, TÜBİTAK, 2021)The Bahcecik travertines, located in Gumushane (NE-Turkey) have been investigated for the first time using a multidisciplinary approach, which included sedimentological (lithofacies, depositional system), petrographic, ... -
Multistage dolomitization in Late Jurassic-Early Cretaceous platform carbonates (Berdiga Formation), Basoba Yayla (Trabzon), NE Turkey: Implications of the generation of magmatic arc on dolomitization
Kirmaci, M. Ziya; Yildiz, Merve; Kandemir, Raif; Eroglu-Gumruk, Tugba (Elsevier Sci Ltd, 2018)Late Jurassic-Early Cretaceous Berdiga Formation, which is widely distributed in an E-W trending belt in the Eastern Pontides (NE Turkey), is composed of platform carbonates. the formation shows varying lithofacies changing ... -
Nature of the Early Cretaceous lamprophyre and high-Nb basaltic dykes, NE Turkey: Constraints on their linkage to subduction initiation of Neotethyan oceanic lithosphere
Karslı, Orhan; İlhan, Mehdi; Kandemir, Raif; Dokuz, Abdurrahman; Aydın, Faruk; Uysal, İbrahim; Duygu, Levent (Elsevier B.V., 2021)Late Mesozoic evolution of the Neotethys Ocean is critical and still remains unclear along the entire Sakarya Zone (SZ), Turkey, because previous interpretations of the Middle to Late Jurassic rifting of the SZ have not ... -
Palaeobiogeographical implications of the first fossil wood flora from the Jurassic of Turkey
Akkemik, Ünal; Kandemir, Raif; Philippe, Marc; Güngör, Yıldırım; Köroğlu, Fatih (Instytut Paleobiologii PAN, 2022)We describe Jurassic fossilized woods from the Gümüşhane and Erzurum regions of Turkey that represent the eastern Sakarya Zone (eSZ) terrestrial biota. We collected 27 fossil wood fragments in total. All 27 fossil wood ... -
The petrogenesis of analcime in the coppermine formation on Robert Island, South Shetland ıslands, Antarctica
Kandemir, Raif; Demir, Yılmaz; Şen, Cüneyt; Yağcıoğlu, Ufuk Celal (TUBİTAK Scientific & Technical Research Council Turkey, 2023)The South Shetland Islands were shaped by island arc volcanism that occurred from the Jurassic to the Quaternary. Robert Island is located in the center of this archipelago, and Coppermine Peninsula, located on the ... -
Post-variscan autochthonous cover in the eastern Sakarya zone, Turkey: evolution of the late carboniferous back-arc ocean to the triassic Karakaya Ocean
Dokuz, Abdurrahman; Alçiçek, Mehmet Cihat; Tunçdemir, Vahdet; Kandemir, Raif; Aydınçakır, Emre (Elsevier, 2023)The processes that caused removal of the upper Carboniferous to Permian sediments in the eastern Sakarya Zone, Turkey, are modeled by using of geochemical data and LA-ICP-MS U-Pb ages from detrital zircons. A felsic ... -
REE characteristics of lower cretaceous limestone succession in Gumushane, NE Turkey: implications for ocean paleoredox conditions and diagenetic alteration
Özyurt, Merve; Kırmacı, M. Ziya; Al-Aasm, İhsan; Hollis, Cathy; Taşlı, Kemal; Kandemir, Raif (Mdpi, 2020)Trace and rare earth elements (REEs) are considered to be reliable indicators of chemical processes for the evolution of carbonate systems. One of the best examples of ancient carbonate successions (Berdiga Formation) is ... -
Reply to the discussion by Granier of Vincent et al., (2018) (Marine and Petroleum Geology, 91, 639-657)
Vincent, Stephen J.; BouDagher-Fadel, Marcelle K.; Guo, Li; Flecker, Rachel; Ellam, Robert M.; Kandemir, Raif (Elsevier Sci Ltd, 2020)Granier (2019) questioned the identification of a number of foraminifer species within the study of Vincent et al. (2018). We dispute his findings and provide supporting evidence for our original identifications. Our ... -
Sedimentological and geochemical approaches for determination of the palaeoceanographic and palaeoclimatic conditions of Lower Cretaceous marine deposits in the eastern part of Sakarya Zone, NE Turkey
Özyurt, Merve; Kırmacı, M. Ziya; Yılmaz, I. Ömer; Kandemir, Raif; Taslı, Kemal (Springer, 2022)Upper Jurassic–Lower Cretaceous carbonate successions are widely exposed throughout the Sakarya Zone, Northern Turkey. The carbonates are considered as invaluable archives of palaeoceanographic and palaeoclimatic conditions ... -
Sedimentological and geochemical characteristics of Lower Jurassic Sandstones from Gumushane, NE Turkey: implications for source to sink processes, paleoenvironmental conditions, provenance and tectonic settings
Kandemir, Raif; Özyurt, Merve; Karslı, Orhan (Taylor & Francis Ltd., 2021)The eastern Sakarya Zone (SZ), one of the Alpine Himalayan Belt's main components, has complex Mesozoic-Cenozoic geodynamic evolution, which remains controversial. Early-Middle Jurassic volcano-sedimentary successions ... -
Silurian to Early Devonian arc magmatism in the western Sakarya Zone (NW Turkey), with inference to the closure of the Rheic Ocean
Karslı, Orhan; Şengün, Fırat; Dokuz, Abdurrahman; Kandemir, Raif; Aydın, Faruk; Andersen, Tom (Elsevier, 2020)The Rheic Ocean is the most significant Paleozoic ocean that detached peri-Gondwana terranes from the northern Gondwana margin throughout the closure of the Iapetus Ocean. the suture of the Rheic Ocean spreads from Mexico ... -
Subduction-related late carboniferous to early permian magmatism in the eastern pontides, the Camlik and Casurluk plutons: insights from geochemistry, whole-rock Sr-Nd and in situ zircon Lu-Hf isotopes, and U-Pb geochronology
Karslı, Orhan; Dokuz, Abdurrahman; Kandemir, Raif (Elsevier, 2016)Late Carboniferous to early Permian granitoid rocks represent a volumetrically minor component of the Eastern Pontide lithosphere, but they preserve useful information about the region's tectonomagmatic history. the Casurluk ... -
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
Aydın, Faruk; Saka, Simge Oğuz; Şen, Cüneyt; Dokuz, Abdurrahman; Aiglsperger, Thomas; Uysal, İbrahim; Kandemir, Raif; Karslı, Orhan; Sarı, Bilal; Başer, 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 ... -
Tracking the timing of Neotethyan oceanic slab break-off: Geochronology and geochemistry of the quartz diorite porphyries, NE Turkey
Karslı, Orhan; Dokuz, Abdurrahman; Aydın, Faruk; Uysal, İbrahim; Şengün, Fırat; Kandemir, Raif; Santos, Jose Francisco; Andersen, Tom (Pergamon-Elsevier Science Ltd, 2020)The initiation of the break-off of the northern branch of the Neotethyan oceanic lithosphere is an important but poorly understood event in the geology of the Sakarya Zone (SZ) in northeastern Turkey. Although it is wellknown ... -
Two-stage bimodal volcanism in a Late Cretaceous arc/back-arc setting, NE Turkey: Constraints from volcano-stratigraphy, zircon Usingle bondPb and 40Ar/39Ar geochronology and whole-rock elemental and Sr-Nd-Pb isotope geochemistry
Oğuz Saka, Simge; Aydın, Faruk; Karslı, Orhan; Dokuz, Abdurrahman; Aiglsperger, Thomas; Miggins, Daniel P.; Şen, Cüneyt; Kandemir, Raif; Sarı, Bilal; Koppers, Anthony A. P. (Elsevier, 2023)The eastern Blacksea magmatic arc (EBMA) in the eastern Sakarya Zone (ESZ) provides an excellent opportunity to investigate birth of an extensional intra-arc and back-arc settings in the Late Cretaceous over the Early ... -
Upper Campanian calciclastic turbidite sequences from the Hacimehmet area (eastern Pontides, NE Turkey): integrated biostratigraphy and microfacies analysis
Sarı, Bilal; Kandemir, Raif; Özer, Sacit; Walaszczyk, Ireneusz; Görmüş, Muhittin; Demircan, Huriye; Yılmaz, Cemil (Polska Akad Nauk, Polish Acad Sciences, Univ Warsaw, Geology Dept, 2014)The upper Campanian (Cretaceous) of the Hacimehmet area (south of the city of Trabzon; Eastern Pontides) is mainly composed of calciclastic turbidites. the basinal unit of the 119 m thick succession includes thin red pelagic ... -
The Upper cretaceous calciclastic submarine fan deposits in the Eastern Pontides, NE Turkey: facies architecture and controlling factors
Sofracıoğlu, Dilek; Kandemir, Raif (2013)The Tonya Formation, which represents the uppermost part of the Mesozoic sequence in the Eastern Pontides, consists of calciturbidites in Trabzon and its surrounding region. Two stratigraphic sections of the unit were ... -
Vulnerable geosites of cayirbagi-calkoy (Duzkoy-Trabzon) in the Eastern Black Sea region of NE Turkey and their geotourism potential
Koroğlu, Fatih; Kandemir, Raif (Springer Heidelberg, 2019)Geotourism is a relatively new branch of tourism dealing with geosites, which are special places that exhibit aspects that characterize the complex history of the Earth. This contribution aims to report an inventory of ...