Department of Geological Engineering, Article

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Recent Submissions

Miocene decoupling of surface uplift of the Central Anatolian Plateau interior (Türkiye) and its modern mountainous margins Meijers, Maud J.M.; Mikes, Tamás; Rojay, Fuat Bora; AYDAR, ERKAN; ÇUBUKÇU, HÜSEYİN EVREN; Wagner, Thomas; Lüdecke, Tina; Krsnik, Emilija; Fiebig, Jens; Mulch, Andreas (2025-08-01) The Central Anatolian Plateau (CAP) forms the western portion of the Turkish-Iranian plateau and has mostly remained above sea level since ca. 41 Ma. However, the current topography of the CAP has predominantly developed s...
Reservoir characterisation of compacted sandstones in the Osmancık Formation, Thrace Basin, Türkiye Arpacı, Taner; Yılmaz, İsmail Ömer; Akın, Serhat; Ulugergerli, Emin Uğur (2025-05-01) The Thrace Basin houses the main gas-producing fields of Türkiye. The gas reservoirs in the basin are mostly located in deltaic sediments of the Oligocene Osmancık Formation where the hydrocarbon-bearing sandstone reservoi...
K-Pg transition in neritic limestones: Deciphering the first bio/chemo-stratigraphic records and tectono-sedimentary evolution, eastern Neotethys (NE Türkiye) Köroğlu, Fatih; SARI, BİLAL; KANDEMİR, RAİF; Yılmaz, İsmail Ömer; Özer, Sacit (2025-04-01) Interestingly, the K-Pg transition from the Cretaceous to the Paleogene is the closest to our time and, from today's perspective, the most dramatic extinction that has ever occurred on Earth. Using different methods and li...
New foraminifera from the Changhsingian (Upper Permian) of the Taurides (southern Turkey) with remarks on their evolutionary origins Altıner, Demir; Payne, Jonathan L.; Lehrmann, Daniel J.; Atasoy, Serdar Görkem; Altıner, Sevinç (2025-03-03) Several new foraminiferal taxa are described from the Changhsingian carbonates of southern Turkey, and their evolutionary relationships are discussed within the middle to late Permian time frame. Comprising Retroseptellina...
Municipal landfill site selection using TOPSIS methodology: A case study for Polatlı, Ankara, Türkiye Oner, Gokalp; Akgün, Haluk; KOÇKAR, MUSTAFA KEREM; Kelam, Arzu Arslan (2025-03-01) Polatl & imath;, which is the largest and tenth out of twenty fifth most populated county of Ankara is well known for being one of the most productive agricultural districts in T & uuml;rkiye in terms of its barley and whe...
Building better biochronology: New fossils and 40Ar/39Ar radioisotopic dates from Central Anatolia Tholt, Andrew; Başoğlu, Okşan; Bektas, Yener; Bernor, Raymond; Carlson, Joshua P.; Dag, Oemer; Doğan, Uğur; Erkman, Ahmet Cem; Kaya, Ferhat; Kaymakcı, Nuretdin; Kirmizioglu, Pinar Goezluek; Meijers, Maud J. M.; Parildar, Oezge Kahya; Pehlevan, Cesur; Simsek, Emrah; White, Tim; Renne, Paul (2025-03-01) T & uuml;rkiye's geographic position between Europe, Asia, and Africa gives it pivotal importance for understanding the local, interregional, and intercontinental dynamics of Neogene vertebrate evolution. Although rich in ...
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...
Pre-Alpine illitization ages from the Palaeozoic sequences of the Tauride Belt, Southern Türkiye: new data for a Late Palaeozoic event in northern Gondwana Bozkaya, Ömer; Uysal, I. Tonguç; Todd, Andrew; Yalçın, Hüseyin; Mählmann, Rafael Ferreiro; Okuyucu, Cengiz; Göncüoğlu, Mehmet Cemal (2025-01-01) Due to the effects of the Alpine orogeny, it is extremely difficult to obtain age data for pre-Alpine geological events for northern Gondwana. This study aims to study the metamorphism in Precambrian (Ediacaran) metaclasti...
Multi-stage tectonic record of the Central Sakarya Terrane Basement (NW Turkey): Implications for the Paleozoic evolution of Rheic Ocean and northern Gondwanan margin Yasar, I. Dogancan; Sayıt, Kaan; Miller, Brent V.; Hames, Willis E.; KORALAY, OSMAN ERSİN; Jeong, Youn-Joong; Göncüoğlu, Mehmet Cemal (2025-01-01) In northwestern Turkey, within the Central Sakarya Terrane, the Söğüt Metamorphics is one of the Variscan tectonic units preserved as a pre-Jurassic basement assemblage of the Sakarya Composite Terrane (SCT). It consists o...
Development of the Middle Devonian-Mississippian carbonate platform in Zonguldak Terrane (NW Anatolia, Türkiye) with special emphasis on the Devonian-Carboniferous Boundary Okuyucu, Cengiz; Boncheva, Iliana; Sachanski, Valeri; Saydam-Demiray, D. Gülnur; Göncüoğlu, Mehmet Cemal (2025-01-01) The Zonguldak Terrane in the northwestern Türkiye is one of the continental micro-plates representing the eastern prolongation of the Variscan belt in Eastern Europe. Its distinguishing feature from the neighboring Varisca...
Implications of Activity Rate Characterization and Fault-Based Partitioning on Probabilistic Seismic Hazard Assessment: A Case Study of Extensional Tectonic Regime in Western Anatolia, Türkiye Shah, Syed Tanvir; Özacar, Atilla Arda; Gülerce, Zeynep (2024-12-01) Complex fault geometries with multiple sets of inclined active faults pose a challenge to the accurate representation of fault-based seismic sources in probabilistic seismic hazard assessment (PSHA). In the absence of slip...
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 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...
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...
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...
Numerical and Experimental Approach to Evaluate Microplastic Transport in Saturated Porous Media Okutan, Hande; Sağır, Çağdaş; Kurtuluş, Bedri; Özmen, Hasan Burak; Pekkan, Emrah; Razack, Moumtaz; Le Coustumer, Philippe (2024-09-01) Under varying flow rate conditions, the transport and retention of polydisperse microplastics (MPls), with an average particle size of 16 ± 6 µm, were investigated in saturated porous media. First-order reversible and irre...
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...

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