Department of Geological Engineering, Article

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Recent Submissions

Integrated fracture analysis for improved oil recovery in the reefal limestones of Soğucak formation, Northwest Thrace Basin, Türkiye Karaca, Ergin; Yılmaz, İsmail Ömer; ÇİFCİ, GÜNAY; Tortopoğlu, Bulut; Akın, Serhat (2025-01-01) Natural fractures play a crucial role in both exploration and development phases in oil and gas industry, as their network and orientation significantly affect flow and recovery strategies. This study highlights the import...
Helium and carbon isotope compositions of thermal fluids in the northeastern Anatolia: Implications for the heat source and volatile flux AYDIN, HARUN; Karakuş, Hüseyin; MUTLU, HALİM; Güleç, Nilgün Türkan (2024-11-20) In this study, we make a quantitative assessment on the volatile flux of mantle-derived fluids and source of volatiles to explain the geologic controls on the transport of volatiles within thermal fluids of northeastern An...
CONODONT BIOSTRATIGRAPHY OF UPPER DEVONIAN TEPHRA BEARING DEPOSITS IN THE ISTANBUL-ZONGULDAK TERRANE, NW TURKEY: INSIGHTS ON THE KELLWASSER EVENTS Atakul-Özdemir, Ayşe; Türkmenoǧlu, Asuman Günal; Göncüoğlu, Mehmet Cemal; Bozkaya, Ömer; Okuyucu, Cengiz (2024-11-01) New evidence for a biostratigraphic assessment of the limestone succession comprising K-bentonite levels exposed in the Yilanli Formation of the Istanbul-Zonguldak Terrane are provided from conodonts at the Gavurpinari qua...
A time-space varying distributed unit hydrograph (TS-DUH) for operational flash flood forecasting using publicly-available datasets Hu, Ying; Wu, Huan; Alfieri, Lorenzo; Gu, Guojun; Yılmaz, Koray Kamil; Li, Chaoqun; Jiang, Lulu; Huang, Zhijun; Chen, Weitian; Wu, Wei; Han, Qinzhe (2024-10-01) Although flash floods originate in upstream (headwater) catchments causing hazards locally, they often occur at short time scales and affect widely while relatively small size catchments respond to intense rainfall systems...
A methodology providing new insights into the flow patterns of karst aquifers: an example from SW Türkiye Maramathas, Athanasios; Katsanou, Konstantina; Sağır, Çağdaş; Baba, Alper; Lambrakis, Nikolaos (2024-10-01) This paper presents a new and innovative methodology for the investigation of karst systems using spring discharge. The behaviour of springs in phase space is investigated by plotting the measurements of spring discharge v...
Significance of the Paleocene olistostrome–turbidite belt (Abant Formation) along the Intra-Pontide Suture, northern Turkey Okay, Aral; Altıner, Demir; Özcan, Ercan; Hakyemez, Aynur (2024-09-02) A belt of Paleocene turbidites with olistostromes, the Abant Formation, crops out for 350 km along the Intra-Pontide Suture in northern Turkey. The suture constitutes the contact between two major Pontide tectonic units, t...
Abrupt climate change at the MIS 5/4 transition recorded in a speleothem from the Eastern Mediterranean Paine, Alice R.; Baldini, James U. L.; Ünal İmer, Ezgi; Wadsworth, Fabian B.; Iveson, Alexander A.; Humphreys, Madeleine C. S.; Brown, Richard J.; Mueller, Wolfgang; Ottley, Christopher J. (2024-09-01) The marine isotope stage (MIS) 5a to 4 transition ( 74 ka) was associated with rapid ice sheet expansion, declining moisture availability globally, and significant upheaval of terrestrial ecosystems across the northern hem...
Block Rotations in NW Iran in Response to the Arabia-Eurasia Collision Constrained by Paleomagnetism Niknam, Ali; van der Boon, Annique; Rezaeian, Mahnaz; Kaymakcı, Nuretdin; Langereis, Cor (2024-08-01) Northwest Iran is a seismically active region dominated by NW-SE trending strike-slip faults, such as the North Tabriz and Qosha Dagh faults, and smaller NNE-SSW striking faults. The Bozgush Mountains are shaped by these f...
Deep Lithospheric Controls on Surface Deformation and Seismicity around the East Anatolian Fault Zone and A3 Triple Junction Delph, Jonathan R.; Darin, Michael H.; Whitney, Donna L.; Cosca, Michael A.; Teyssier, Christian; Kaymakcı, Nuretdin; Eken, Tuna; Reid, Mary R.; Beck, Susan L. (2024-08-01) The East Anatolian Fault Zone (EAFZ) is a plate-bounding strike-slip fault capable of hosting large earthquakes, as demonstrated by the extremely damaging February 2023 Mw 7.8 and Mw 7.7 mainshocks of the Kahramanmaraş ear...
Assessment of rarity and ecological preferences of the non-marine ostracods (Crustacea) in Çanakkale Province (Türkiye) Yavuzatmaca, Mehmet; Külköylüoğlu, Okan; Ataman, Alper; Ayteğin, Ahmet; Yılmaz, İsmail Ömer (2024-07-01) Rarity as a multidimensional concept has not been discussed for the ostracods along with the effects of physicochemical factors and sedimentation rates of waters on their distribution. We randomly sampled 91 aquatic sites ...
Delamination Magmatism in Eastern Anatolia: A Geochemical Perspective Aktağ, Alican; Sayıt, Kaan; Furman, Tanya; Peters, Bradley J. (2024-05-01) The Sr-Nd-Hf-Pb isotope geochemistry of the Late Miocene Tunceli Volcanics suggests that they are the products of mixed asthenospheric and lithospheric mantle melts. The combined elemental and mineral chemistry data additi...
Latest Carboniferous–Early Permian Rifting of the Northern Gondwanan Margin and the Opening of the Northern Neotethys: New Evidence from the Carboniferous and Permian Foraminiferal Assemblages from the Beysehir-Hoyran Nappes, Central Taurides (Southern Turkey) Okuyucu, Cengiz; TEKİN, UĞUR KAĞAN; Guzgun, Cagri; Sayıt, Kaan (2024-04-01) The Beyşehir-Hoyran Nappes, one of the tectonostratigraphic units of the Taurides, are thought to be originated from the Izmir-Ankara Ocean (northern branch of Neotethys). In this study, Late Paleozoic rock units from the ...
A Novel VS30 Prediction Strategy Taking Fluid Saturation into Account and a New VS30 Model of Türkiye Okay, Hakan Bora; Özacar, Atilla Arda (2024-04-01) The averaged shear-wave velocity of the top 30 m (VS30) is widely used in earthquake engineering as a proxy to represent site responses. However, the spatial availability of measured VS30 is rather limited, and, so far, a ...
Classification and modification of slake durability test for different types of rocks Ersöz, Timur; Topal, Tamer (2024-04-01) Rocks exposed to atmospheric conditions are subjected to weathering processes driven by numerous factors especially precipitation. The slaking behavior attributed to water-induced weathering particularly affects rocks cont...
Seismo-turbidites reveal locations of major earthquakes during the past millennium in the Gulf of Aqaba, southern Dead Sea Fault Bektaş, Zeynep; Avşar, Ulaş; Ribot, Matthieu; Klinger, Yann; Jónsson, Sigurjón (2024-03-01) Although ample historical and paleoseismological information is available on major past earthquakes along the onland part of the Dead Sea Fault, knowledge of the seismic behavior of its southernmost part in the Gulf of Aqa...
Evidence for Holocene Earthquakes along the Húsavík-Flatey Fault in North Iceland: Implications for the Seismic Behavior of Oceanic Transform Faults Matrau, Rémi; Klinger, Yann; Thorðarson, Thorvaldur; Guðmundsdóttir, Esther R.; Avşar, Ulaş; Parisi, Laura; Fittipaldi, Margherita; Jónsson, Sigurjón (2024-03-01) Understanding the long-term seismic behavior of oceanic transform faults is challenging because their location underwater generally prevents the use of classical paleoseismological techniques. The Húsavík-Flatey fault (HFF...
Development of the early Carnian deepening upward sequence of the Huglu Unit within the tectonic slices/blocks of the Mersin Mélange, southern Turkey: Biochronologies, geochemistry of volcaniclastics and palaeogeographic implications TEKİN, UĞUR KAĞAN; Krystyn, Leopold; Kürschner, Wolfram M.; Sayıt, Kaan; Okuyucu, Cengiz; Forel, Marie-Béatrice (2024-02-15) The Mersin Ophiolitic Complex in southern Turkey includes two different units; the Mersin Mélange (MM) and Mersin Ophiolite with a metamorphic sole. Within the MM the Tavuscayiri megablock exposes in the Kilin section the ...
Surface deformations of the 6 February 2023 earthquake sequence, eastern Türkiye Meng, Jiannan; Kusky, Timothy; Mooney, Walter D.; Bozkurt, Erdin; BODUR, MEHMET NURİ; Wang, Lu (2024-01-19) Two powerful earthquakes struck Türkiye on 6 February 2023. The initial rupture was on the Dead Sea fault zone, yet maximum displacements and energy release [moment magnitude (Mw) 7.8] occurred 24 seconds later when ruptur...
Assessment of geoenvironmental problems at Hasankeyf Antique City (Türkiye) Topal, Tamer; Kaya, Y. (2024-01-01) The Hasankeyf Antique City contains several historical structures, ancient and new man-made caves. The dolomitic limestone exposed in the area is the main rock, but weak and not durable. The rock is deteriorated under envi...
Partitioning Anatolian Kinematics into Tectonic Escape and Slab Rollback Dominated Domains Meng, Jiannan; Kusky, Timothy M.; Bozkurt, Erdin; Deng, Hao; Sinoplu, Ozan (2024-01-01) Anatolia is the global archetype of tectonic escape, as witnessed by the devastating 2023 Kahramanmaraş Earthquake sequence, and the 2020 Samos Earthquake, which show different kinematics related to the framework of the es...

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