Nurdan Yavuz

General Directorate of Mineral Research and Exploration of Turkey | MTA · Department of Geological Research

Determining the Pleistocene-Holocene boundary through palynological analysis is vital for reconstructing past vegetation and climate changes. These analyses provide detailed records of ecological transitions, enabling a deeper understanding of how climate shifts have historically impacted biodiversity and ecosystem dynamics. In this study, for the...

The Cappadocia region located in the centre of Anatolia is mainly known because of its Neogene and Quaternary volcanism and related geomorphology showing spectacular erosional landscapes. However, in contrast to its relatively well-studied volcanic and geomorphic history, studies on its sedimentary deposits together with its environmental and clima...

Paleovejetasyonun yeniden kurulması amacıyla, erken Miyosen yaşlı Kılçak formasyonu (Orta Anadolu, Türkiye) çökellerinin palinolojik incelemesi gerçekleştirilmiştir. Polen spektrumu Pinus’un baskın olduğu incelenen istifl erden birinde Cupressaceae’nin eşbaskın olduğu, ve ona daha düşük yüzdelerle Taxodioideae (Cupressaceae dahilinde), yaprak döken...

The Early to Middle Miocene period in the Sivas Basin is represented by a thick deposition of mud-dominated marine sediments (Karacaören Formation) in an overall bay-like paleogeographic setting. Previous studies have suggested that halokinesis-induced local tectonics and orbital climatic fluctuations have been the primary controls on depositional...

Çankırı Basin is a unique basin owing to an almost 4 km thick basin-fill deposits, with only minor breaks in sedimentation from Late Cretaceous to recent, with potential hydrocarbon resources and industrial evaporitic mineral reserves. This study presents results of palynological analysis of Neogene and Quaternary terrestrial deposits comprising al...

The Çankiri Basin is one of the largest Cenozoic basins in Central Anatolia, Turkey and contains possible economic hydrocarbon and evaporite reserves. Gypsum is the dominant mineral in the evaporite-bearing Pliocene deposits of the Çankiri Basin. In claystones, the abundance of smectite, dolomite, illite/mica and chlorite in association with minor...

This paper presents the mineralogical, geochemical, palynological and stable isotopic compositions of the Late Pleistocene–Holocene fluvio-lacustrine sediments around Lakes Eymir and Mogan (Ankara), Central Anatolia. It is based on the interpretation of the multi-proxy records in conjunction with the geochronological data in eight different section...

Bu makale, 2013-2015 yılları arasında yürütülen “Çankırı-Çorum Havzası Tersiyer Yaşlı Evaporitli Çökelleri Palinolojik İncelemesi” başlıklı araştırma projesinin bir kısmını içermektedir. Çalışmanın amacı, Çankırı-Çorum Havzasındaki karasal Tersiyer çökel istifleri üzerinde yüksek çözünürlüklü palinolojik incelemeler gerçekleştirerek elde edilmiş ve...

The Çankırı Basin is one of the largest basins within central Anatolia with thick Neogene terrestrial sediments suitable for palaeoclimatic studies. An integrated study of Neogene and Quaternary lacustrine successions in the Çankırı Basin, combining pollen analysis, ostracod and isotope analysis records variations in vegetation and depositional env...

Holocene high-resolution pollen and δ13C records from Central Anatolia: highlights from vegetation and climate Nurdan YAVUZ Maden Tetkik ve Arama Genel Müdürlüğü, Jeoloji Etütleri Dairesi Üniversiteler Mahallesi Dumlupınar Bulvarı No:139 06800 Çankaya/ANKARA This study presents part of a palynological record from a 40 cm long fine sediment core o...

An integrated stratigraphic study of Neogene lacustrine succession in the Çankırı Basin (Central Anatolia), combining pollen analysis, biostratigraphy and isotope analysis records variations in vegetation and depositional environment. The palynological analysis of the upper Miocene interval of the studied section reveals the existence of a conifero...

Palynological, mineralogical and isotopic analysis are carried out on samples collected from a meaured stratigraphic section from evaporite-clastic alternations of Pliocene aged Bozk›r Formation within Çankırı Basin which is one of biggest basins in Central Anatolia with thick Neogene continental deposits. Palynological analysis show that samples a...

In Pliocene the Earth stepped into a more variable climatic conditions. During Early Pliocene, evaluated climate records from a variety of areas indicate that climate was often warmer than modern climate. On the other hand in Late Pliocene it was arid-cold and climatic ocillations has relatively increased. As a consequence, ice sheets have grown in...

Late Miocene and Pliocene are important times for climatic studies. The Çankırı Basin is one of the largest Tertiary basins in Central Anatolia with thick terrestrial Neogene sediments suitable for paleoclimatic studies also has possible economical hydrocarbon and industrial evaporitic mineral reserves. The Çankırı Basin lies within the İzmir-Ankar...

North and South Anatolia are today refuge areas for plants that were previously widespread in the European and Mediterranean regions. Thirteen well-dated Anatolian pollen records spanning the last 23 million years allow for a reconstruction of the history of several plants that have disappeared from this region or are surviving in this refuge area....

North and South Anatolia are today refuge areas for plants that were previously widespread in the European and Mediterranean regions. Thirteen well-dated Anatolian pollen records spanning the last 23 million years allow for a reconstruction of the history of several plants that have disappeared from this region or are surviving in this refuge area....

The Kılçak locality is one of the well-known rodent type sections for the Early Miocene in the Eastern Mediterranean. The deposits which yielded the Kılçak faunas have been included in different formations by different researchers. Şen et al. (1998), for the first time, proposed that the fossiliferous deposits at Kılçak must be distinguished as a d...

Pollen assemblages from lacustrine sediments that have known positions relative to mammal faunas in central and western Turkey are analysed. The stratigraphical order of the pollen samples is based on the stage of evolution of the associated mammal remains. The early Early Miocene pollen spectra indicate a flora dominated by mega-mesothermic elemen...

A palynological analysis of the Late Miocene and Early Pliocene successions of the Cappadocian Volcanic Province (Central Anatolia, Turkey) has been carried out with the aim of reconstructing the palaeovegetation and palaeoclimatic conditions. The samples are collected from outcrop sections from three different localities (A: Akdağ, B: Bayramhacılı...

The palynological investigation of the early Middle Miocene fluviolacustrine sedimentary rocks interfingering with volcanics of the Galatean Volcanic Province at Pelitçik Basin (Central Turkey) have yielded palynomorphs belonging to 51 spore and pollen taxa. The pollen record is dominated by Ulmus, Pinaceae, Quercus, Carpinus and Carya, and appears...

Kütahya graben is one of the largest E–W trending grabens of Western Turkey consisting of Tavşanlı and Seyitömer sub-basins filled with Neogene continental deposits. These deposits contain economic lignite seams and the clay samples investigated in this study are closely related to the commercial lignite deposits since they occur underlying or over...

The palynological analysis of the Burdigalian (Early Miocene) successions of the Güvem Basin (NW Central Anatoia, Turkey) has been carried out with the aim of reconstructing the palaeovegetation. The pollen spectra indicate a flora dominated by trees such as Quercus deciduous type, Carya, Carpinus, Ulmus/Zelkova, Engelhardia, Quercus ilex type and...

The late Early–Middle Miocene sequences of the Seyitömer Basin (western Anatolia) were palynologically investigated. Fifty-five taxa belonging to seven gymnospermous and 48 angiospermous pollen genera were identified in the 19 productive samples. Two pollen zones were recognised based on the changing abundance of individual tree taxa. Zone 1 is cha...