Nurdan Yavuz

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

Assoc. Prof. Dr

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32
Publications
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299
Citations

Publications

Publications (32)
Article
Full-text available
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...
Article
Full-text available
The palynological analysis of the early Miocene successions of the Kılçak Formation (Central Anatoia, Turkey) was carried out in order to reconstruct the palaeovegetation. The pollen spectra indicate a flora dominated by Pinus, co-dominance of Cupressaceae in one of the investigated successions, and lower percentages of trees such as Taxodioideae w...
Article
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...
Conference Paper
Full-text available
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...
Article
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...
Article
Full-text available
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...
Article
Full-text available
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...
Conference Paper
Full-text available
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...
Conference Paper
Full-text available
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...
Article
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...
Poster
Full-text available
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...
Conference Paper
Full-text available
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...
Conference Paper
Full-text available
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...
Article
Full-text available
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....
Article
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....
Conference Paper
Full-text available
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...
Article
Full-text available
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...
Article
Full-text available
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...
Article
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...
Article
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...
Article
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...
Article
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...

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Project
NECLIME is an open international network of scientists working on Cenozoic climate evolution and related changes of continental ecosystems. During the past 65 million years of Earth history, globally warmer-then-present conditions prevailed in a world with almost modern paleogeography. These timespans represent promising case studies for anticipated future scenarios. Within the NECLIME network, we aim to combine data on past climate change and its environmental impact for large-scale reconstructions. NECLIME research activities comprise paleoclimate reconstructions, including atmospheric CO₂ and ecosystem analysis using multiple quantitative methods on various primarily continental proxies (plants; vertebrates; invertebrates; geochemistry and geological proxies). Complementing model studies are employed to assess connections and processes driving ocean, atmosphere and biosphere at global and regional scales. NECLIME was established in 1999 with the aim to understand Neogene trends across Eurasia. This basic idea quickly and constantly expanded to a global interest and a wider stratigaphical frame. The steadily growing NECLIME network with currently around 140 members in 34 countries is coordinated by a team of researchers and an advisory board. NECLIME holds annual conferences and workshops and administers working groups bringing forward scientific exchange, joint projects, and the integration of research data. For more information go to www.neclime.de