Gullu Deniz Dogan-Kulahci

Gullu Deniz Dogan-Kulahci
Hacettepe University · Department of Geological Engineering

PhD

About

24
Publications
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Introduction

Publications

Publications (24)
Presentation
Full-text available
Luneburgite (Mg3[B2(OH)6(PO4)2] 6H2O), a rare magnesium borate-phosphate mineral, has been observed in the Central Anatolia-Polatlı Region. This rare mineral can be found in marine or lacustrine evaporite rocks. There are limited number of studies related to luneburgites in the world. Although luneburgites' presence in the evaporite deposits around...
Article
This study is try to understand pre-eruptive magma storage and crystallization conditions of the Middle Miocene aged, silica-saturated trachytic rocks of the Afyon Volcanic Complex (AVC) in Western Anatolia, Turkey. Those rocks can be divided by their high K2O, K2O/Na2O ratio and Mg# into two groups, namely the intermediate-potassic (IPG) and the u...
Presentation
Full-text available
The study area is located in Hisarlıkaya region, Southwest (SW) of Ankara, Central Anatolia. Units cropping out throughout large areas consist of different sized and shaped xenoliths having a polygenetic origin in certain areas. Macroscopically blackish-greenish-greyish-greenish colored and porphyritic textured rocks contained mainly plagioclase, a...
Conference Paper
Full-text available
Middle Miocene aged trachytic rocks south of Afyon are represented by domes, block lava and ash flows and can be divided into two groups. The first group is classified as ultrapotassic group (UPG), having high K2O (˃9 wt%), K2O/Na2O (˃10 wt%) ratio and Mg# (75-77) values, and the second one is called intermediate-potassic group (IPG). UPG samples h...
Conference Paper
Full-text available
Özet: Kuzeybatı Anadolu’da yüksek dereceli metamorfizmasının ürünleri, Biga Yarımadası’nda detaylı olarak tanımlanır. Kazdağı Masifi, Biga Yarımadası’nın güneyinde yer alır ve yüksek sıcaklık metamorfizmasının izleri hem temelindeki metaofiyolitik birliklerde (Tozlu Metaofiyoliti) hem de temelin üzerine uyumsuzluk ile gelen metaplatform istifinde (...
Presentation
Full-text available
The study area is located at the southwest of Ankara, Central Anatolia, at the northern part of İzmir - Ankara - Erzincan suture zone which formed by the closure of the northern branch of Neotethys, and is bounded by the Sakarya Block in the north, by the Tavşanlı zone in the west and by the Kırşehir block in the east. It is known from literature t...
Article
This study focuses on spatio-temporal evolution of basaltic volcanism in the Central Anatolian post-collisional Quaternary magmatic province which developed along a NE-SW orientation in Turkey. This magmatic province consists of the stratovolcanoes Erciyes (ES) and Hasandag (HS), and the basaltic volcanic fields of Obruk-Zengen (OZ) and Karapınar (...
Article
The Cemilköy ignimbrite is one of the voluminous ignimbrite deposits in Cappadocia. The Cemilköy ignimbrite contains pumice and lithic clasts of volcanic and ophiolitic origin in an ash matrix. The unwelded Cemilköy ignimbrite is distinguished from other deposits in Cappadocia by flattened pumices, elongate vesicles and a slaty fabric. The mineral...
Conference Paper
Full-text available
The high-grade succession of the Kazdagı massif is one of the well-known in the northwestern Turkey (Biga ˘ Peninsula). The Kazdagı massif is characterized by, from bottom to top, oceanic-crustal ultramafic rocks, and ˘ unconformably overlain by the thick-platform type associations (marble and migmatite) with amphibolites and metagranitoids. These...
Conference Paper
Full-text available
The Biga Peninsula comprises one of the unique geological regions, in where old oceanic sutures (Neotethys, Karakaya, Paleotethys sutures) and different sources of rocks gathered. Significant traces of these rocks with different origins and characteristics are reported in different rock associations of the Kazdag Massif occurring in the southern pa...
Conference Paper
zet: Afyon ili güneyi ile Şuhut bölgesi kuzeyi arasında kalan çalışma alanında, Orta Miyosen yaşlı erken evreye ait volkanik kayaçların mineralojik ve petrografik özellikleri incelenmiş ve mineral kimyası verileri kullanılarak basınç (P)-sıcaklık (T)-hesaplamaları yapılmıştır. Saha çalışmaları sırasında dom ile blok ve kül akışları şeklinde görülen...
Article
Full-text available
Bu calismada Afyon ili guneyi ile Şuhut bolgesinin kuzeyi arasinda bulunan volkaniklerin, mineralojik-petrografik ozellikleri belirlenmis ve mineral kimyasi analizlerinden elde edilen veriler ile termobarometre hesaplamalari yapilmistir. Calisma alaninda dom, lav domlari ile blok ve kul akislari seklinde gorulen trakitik kayaclarda gerceklestirilen...
Thesis
Cette thèse est consacrée à la caractérisation pétrologique et géochimique des basaltes quaternaires post-collisionnels d’Anatolie centrale (strato-volcans Erciyes et Hasandağ et volcanisme dispersé d'Obruk-Zengen et de Karapınar), en se focalisant sur l’évolution spatio-temporelle de ce magmatisme de la Cappadoce (Turquie). Par la géochronologie K...
Conference Paper
This study focuses on Quaternary basaltic volcanism developed along a NE-SW direction and consisting of Erciyes stratovolcano (ES), Hasanda stratovolcano (HS) and Obruk-ğ Zengen (OZ) and Karap nar (K) dispersed volcanism. Based on ı our dated datasets, coeval samples exhibit calcalkaline affinity in ES while alkaline in HS, OZ and K. The mineralogi...
Article
Full-text available
During and after the closure of the Neo-Tethyan Ocean and progressive collision of the Tauride-Anatolide Platform with the Sakarya Continent, widespread magmatism occurred in NW Anatolia. This magmatism is manifested in a NW-trending belt along the northern border of the Menderes Massif. Due to the complex geodynamic setting of this region, the exa...
Article
Full-text available
During and aft er the closure of the Neo-Tethyan Ocean and progressive collision of the Tauride-Anatolide Platform with the Sakarya Continent, widespread magmatism occurred in NW Anatolia. Th is magmatism is manifested in a NW-trending belt along the northern border of the Menderes Massif. Due to the complex geodynamic setting of this region, the e...
Article
Central Aegean magmatic belt including the northwestern Anatolia is interpreted in the literature as formed along magmatic arc which has migrated southwardly to its present position. During and after the closure of the Neo-Tethyan Ocean and progressive collision of the Tauride-Anatolide Platform with the Sakarya Continent, widespread magmatism occu...

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