Yazar "RTEÜ, Mühendislik ve Mimarlık Fakültesi, Jeoloji Mühendisliği Bölümü" için Mühendislik Fakültesi listeleme
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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 Paleogene ophiolite conundrum of the Iran-Iraq border region
Moghadam, Hadi Shafaii; Li, Qiu-Li; Stern, Robert J.; Chiaradia, Massimo; Karslı, Orhan; Rahimzadeh, Bahman (Geological Soc Publ House, 2020)New and compiled geochemical, isotopic and geochronological data allow us to propose a new explanation for Paleogene oceanic magmatic rocks along the Iran-Iraq border. These rocks are represented by a thick pile (>1000 m) ... -
Petrogenesis and U-Pb zircon geochronology of migmatitzation during Neo-Tethyan Jurassic magmatic arc extension: The Boroujerd example, western Iran
Zare-Shooli, Masoumeh; Tahmasbi, Zahra; Ao, Songjian; Zhang, Hua-Feng; Ahmadi-Khalaji, Ahmad; Yakymchuk, Chris; Esmaeili, Rasoul; Karslı, Orhan (Elsevier, 2021)The migmatites in the Boroujerd region, Western Iran are spatially associated with felsic and mafic magmatism. However, the genetic relationship between partial melting and magmatism in the region is unclear. Four metapelite ... -
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 ... -
Petrogenesis of ultramafic rocks from the eastern Orhaneli ophiolite, NW Turkey: Hints on the initiation and evolution of melt-peridotite interaction processes within a heterogeneously depleted mantle section
Uysal, İbrahim; Dokuz, Abdurrahman; Kapsiotis, Argyrios; Saka, Samet; Karslı, Orhan; Kaliwoda, Melanie; Mueller, Dirk (Pergamon-Elsevier Science Ltd, 2017)The eastern Orhaneli ophiolite in NW Anatolia (Turkey) consists of voluminous dunite and minor harzburgite intruded by clinopyroxenite veins. Harzburgite contains spinel of low Cr# [100 x Cr/(Cr + Al) = 40-45] and diopside ... -
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 ... -
Postcollisional transition from subduction- to intraplatetype magmatism in the eastern Sakarya zone, Turkey: Indicators of northern Neotethyan slab breakoff
Dokuz, Abdurrahman; Aydın, Faruk; Karslı, Orhan (Geological Soc Amer, Inc, 2019)Postcollisional magmatism in the eastern Sakarya zone was recorded by voluminous basic volcanism and repeated plutonism during the early Cenozoic. the temporal and geochemical evolution of these magmatic rocks is important ... -
Recently-discovered Bahçecik Au±Ag mineralization in the Eastern Pontides, Gümüşhane-NE Türkiye: geological and geochemical implications on the intermediate sulfidation epithermal deposit
Revan, Mustafa Kemal; Demir, Yılmaz; Uysal, İ̇brahim; Özkan, Mustafa; Dumanlılar, Özcan; Şen, Cüneyt; Kara, Rasim Taylan; Hamzaçebİ, Semi; Göç, Deniz; Müller, Dirk; Tokoğlu, Mustafa (Taylor & Francis Ltd., 2023)Intermediate sulfidation epithermal deposits represent significant reservoirs of precious metals, playing a crucial role in global mining operations. The Anatolian Peninsula, predominantly characterized by relatively young ... -
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 ... -
Sediment-derived melt-related metasomatized mantle wedge as a source of post-subduction Quaternary adakitic porphyries associated with absarokite-shoshonite from the Karadag stratovolcano (Karaman, Central Anatolia, Turkey)
Çoban, Hakan; Karslı, Orhan; Caran, Şemsettin; Yılmaz, Kamil (Pergamon-Elsevier Science Ltd, 2020)The Karadag stratovolcano (KS), located at the southern end of the Cappadocian Volcanic Province in Central Anatolia, Turkey, is a key volcanic vent for understanding the spatiotemporal association between adakitic and ... -
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 ... -
Sequential formation of natrolite-group zeolites in amygdules of basaltic lavas
Özen, Sevgi; Göncüoğlu, M. Cemal (Mineralogical Assoc Canada, 2015)Natrolite-group minerals were found in amygdules in Middle Eocene basaltic lavas in northern central Anatolia and have been evaluated in detail by petrographical, mineralogical, and chemical studies. A sequential formation ... -
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 birth and growth of Cimmeria: Geochronology and origins of intrusive rocks from NW Iran
Moghadam, Hadi Shafaii; Li, Qiu-li; Griffin, William L.; Karslı, Orhan; Santos, Jose F.; Ottley, C. J.; Ghorbani, Ghasem; O'Reilly, Suzanne Y. (Elsevier, 2020)New geochronological and geochemical data for Late Neoproterozoic to Mesozoic intrusive rocks from NW Iran define major regional magmatic episodes and track the birth and growth of one of the Cimmerian microcontinents: the ...