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- Central Anatolia (5)
- Menderes Massif (5)
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- Publication Year
Articles 331 - 360 of 1893
Full-Text Articles in Physical Sciences and Mathematics
The Ostracod Fauna And Environmental Characteristics Of The Volcano Sedimentary Yol Üstü Formation In The Hinis Region, Erzurum (Eastern Anatolia), Turkey, Ümit Şafak
Bulletin of the Mineral Research and Exploration
The volcanosedimentary Yolüstü formation which outcrops in the vicinity of Hınıs Town, the southeast of Erzurum City, consists of conglomerate, marl, agglomerate, claystone, tuffite, fragmented travertine limestone with fragments of sand – pebble - plant, lacustrine limestone and tuffaceous – clayey limestone. In this formation, carefully selected 3 measured stratigraphic sections were taken at levels in which the lithology of hard travertine limestones with plant fragments and soft tuffaceous – clayey limestone are present. Washed samples which had been taken from these sections were studied and assessed, and then ostracods reflecting freshwater and brackish water environments were detected. In the …
Petrogenetic Characteristics Of Oyaca – Kedi̇kayasi – Boyalik Adakites In Sw Ankara (Central Anatolia, Turkey): Evidence For Slab Melt Metasomatism, Pınar Şen, Erdal Şen
Petrogenetic Characteristics Of Oyaca – Kedi̇kayasi – Boyalik Adakites In Sw Ankara (Central Anatolia, Turkey): Evidence For Slab Melt Metasomatism, Pınar Şen, Erdal Şen
Bulletin of the Mineral Research and Exploration
The Early Miocene Oyaca, Kedikayası and Boyalık dacites, situated approximately 50-60 km southwest of Ankara have affinities similar to adakitic rocks. They have porphyritic texture with a variable amount of plagioclase feldspar, hornblende and lesser biotite phenocrysts and a groundmass of plagioclase and quartz microcrysts. They have high Sr/Y (55-79 ppm) and (La/Yb)n (21-32 ppm) ratios, and low Y (10-19 ppm) and heavy rare earth element contents. According to their SiO2 (62.3-69.70 % wt.) and MgO (0.62-2.23 % wt) contents, they are referred to as high silica adakites, indicating the effects of slab-derived melts in their genesis. The adakites in …
Hydrogeochemical And Isotopic Investigation Of Nasrettin Hoca Springs, Eski̇şehi̇r, Turkey, Mehmet Çeli̇k, Uğur Erdem Dokuz, Pakize Elif Türköz, Özlem Güllü, Şebnem Arslan
Hydrogeochemical And Isotopic Investigation Of Nasrettin Hoca Springs, Eski̇şehi̇r, Turkey, Mehmet Çeli̇k, Uğur Erdem Dokuz, Pakize Elif Türköz, Özlem Güllü, Şebnem Arslan
Bulletin of the Mineral Research and Exploration
No abstract provided.
Descriptions Of Two New Families, Three New Species And Re-Description Of Four Known Genera And One Subfamily From The Larger Benthic Foraminifera Of Paleocene In Turkey, Ercüment Si̇rel
Bulletin of the Mineral Research and Exploration
Two new foraminiferal families are introduced as follows: the Anatoliellidae (type
genus Anatoliella Sirel) in the superfamily Ataxophragmiacea Schwager and the family
Bolkarinidae (type genus Bolkarina Sirel) in the superfamily Orbitoidacea Schwager. Three
new species of Paleocene are described and figured as follows: Ranikothalia polatliensis,
Nurdanella paleocenica, Periloculina yilmazi. In addition, four known Paleocene genera
such as Bolkarina Sirel, Globoflarina Rahaghi, Nurdanella Özgen and Coskinon Hottinger
and Drobne and subfamily Globoflarininae are redescribed.
A New Age Finding In The Central Sakarya Region (Nw Turkey), Mehmet Fuat Uğuz
A New Age Finding In The Central Sakarya Region (Nw Turkey), Mehmet Fuat Uğuz
Bulletin of the Mineral Research and Exploration
The existence of a metamorphic basement cut by granitoids is known in the Central Sakarya region of northwest Turkey according to the previous studies. Over this metamorphic basement, there is a Liassic unit which contains ammonite, brachiopod and some benthic foraminifers and has a sequence starting with fluvial deposits at the base and grading into coastal, subtidal and shallow marine sediment character towards the top in the vicinity of Sarıcakaya district, Eskişehir City. At different levels of this unit which is called as the “Kapıkaya Formation”, the Campanian age fossils such as; Ceratolithoides aculeus (Stradner), Pervilithus varius Crux, Watznaueria barnesae …
Neogene Stratigraphy Of The Eski̇şehi̇r Graben And The Investigation Of Coal Deposition By Seismic Reflection Method, İlker Şengüler, Erdener Izladi
Neogene Stratigraphy Of The Eski̇şehi̇r Graben And The Investigation Of Coal Deposition By Seismic Reflection Method, İlker Şengüler, Erdener Izladi
Bulletin of the Mineral Research and Exploration
No abstract provided.
Acknowledgement, Chief Edi̇tor
Acknowledgement, Chief Edi̇tor
Bulletin of the Mineral Research and Exploration
No abstract provided.
The Characterization Studies Of The Northwest Anatolian Halloysites/Kaolinites, Saruhan Saklar, Haşim Ağrili, Okan Zi̇mi̇toğlu, Bülent Başara, Uğur Kaan
The Characterization Studies Of The Northwest Anatolian Halloysites/Kaolinites, Saruhan Saklar, Haşim Ağrili, Okan Zi̇mi̇toğlu, Bülent Başara, Uğur Kaan
Bulletin of the Mineral Research and Exploration
The extraction and characterization studies were carried out on representative samples which were taken from iron bearing parts of halloysite, halloysite/kaolin deposits located in Çanakkale – Balıkesir vicinities in Northwest Anatolia. Halloysites in these samples are generally in the form of hydro halloysite (10 Å) and kaolinite could also be encountered in some parts. Minerals for primary source of pollution in halloysite and kaolin deposits are limonite (geothite) and muscovite. These minerals might contain clay minerals such as; quartz, feldspar, gibbsite, smectite and anatase in their structures. The iron content of the clays can be reduced signifi cantly by hydrochloric …
Conodont Fauna And Biostratigraphy Of The Early-Middle Devonian Units In Beykoz, Şile And Kurtdoğmuş Areas, İstanbul, Turkey, Dilek Gülnur Saydam-Demi̇ray, Şenol Çapkinoğlu
Conodont Fauna And Biostratigraphy Of The Early-Middle Devonian Units In Beykoz, Şile And Kurtdoğmuş Areas, İstanbul, Turkey, Dilek Gülnur Saydam-Demi̇ray, Şenol Çapkinoğlu
Bulletin of the Mineral Research and Exploration
The conodont faunas defi ning the delta-pesavis zones (upper Lochkovian, Lower Devonian) were obtained from Beykoz and Karamandere sections of the İstinye Formation (the Yumrukaya group) and the conodont faunas of the laticostatus, serotinus, patulus and partitus zones (upper Emsian-lower Eifelian, Lower-Middle Devonian) were obtained from the Büyükdere and Kokarpınar sections of the Kozyatağı member of the Kartal Formation. A total of 22 species/subspecies were described belonging to the genera Neopanderodus (2), Icriodus (8), Pelekysgnathus (1), Lanea (1), Polygnathus (4), Ozarkodina (2), Pseudooneotodus (2), Belodella (2).
The Influences Of Oceanographical Characteristics Of The North Coasts Of Karaburun Peninsula On The Benthic Foraminiferal And Ostracod Assemblages, Engin Meri̇ç, Niyazi Avşar, Atike Nazi̇k, Baki Yokeş, Özcan Dora, İpek F. Barut, Mustafa Eryilmaz, Feyza Di̇nçer, Erol Kam, Abdullah Aksu, Halim Taşkin, Asiye Başsari, Cüneyt Bi̇rcan, Aysun Kaygun
The Influences Of Oceanographical Characteristics Of The North Coasts Of Karaburun Peninsula On The Benthic Foraminiferal And Ostracod Assemblages, Engin Meri̇ç, Niyazi Avşar, Atike Nazi̇k, Baki Yokeş, Özcan Dora, İpek F. Barut, Mustafa Eryilmaz, Feyza Di̇nçer, Erol Kam, Abdullah Aksu, Halim Taşkin, Asiye Başsari, Cüneyt Bi̇rcan, Aysun Kaygun
Bulletin of the Mineral Research and Exploration
Major differences in foraminiferal assemblages have been observed between the eastern and western coasts on the northern part of the Karaburun Peninsula. In contrast to the rich fauna of the western coast, a poor assemblage was found on the western coast, which is located in the Gulf of İzmir. A great difference in population sizes have also been observed in Amphistegina lobifera Larsen assemblages found on the Aegean coasts of Karaburun Peninsula and Gulf of Izmir. In the frame work of this study, 84 foraminifer species were identifi ed. The most abundant species were Peneroplis pertusus (Forskal), P. planatus (Fichtel …
Ilica Bay (Çeşme-İzmi̇r) Benthic Forminifer-Ostracod Assemblages And Pacific Ocean – Red Sea Originated Foraminifera And Abnormal Individuals, Engin Meri̇ç, Niyazi Avşar, Atike Nazi̇k, Baki Yokeş, İpek F. Barut, Mustafa Eryilmaz, Erol Kam, Halim Taşkin, Asiye Başsari, Feyza Di̇nçer, Cüneyt Bi̇rcan, Aysun Kaygun
Ilica Bay (Çeşme-İzmi̇r) Benthic Forminifer-Ostracod Assemblages And Pacific Ocean – Red Sea Originated Foraminifera And Abnormal Individuals, Engin Meri̇ç, Niyazi Avşar, Atike Nazi̇k, Baki Yokeş, İpek F. Barut, Mustafa Eryilmaz, Erol Kam, Halim Taşkin, Asiye Başsari, Feyza Di̇nçer, Cüneyt Bi̇rcan, Aysun Kaygun
Bulletin of the Mineral Research and Exploration
The hot water submarine spring which is located at a depth of 2.50 m on Yıldız Cape, Ilıca Cove (Cesme-Izmir) was investigated for its recent benthic foraminifer assemblage. 38 surface sediment samples have been collected on 3 transects. The Pacific Ocean and the Red Sea originated benthic foraminifers were abundantly observed. The identifi ed species are Nodopthalmidium antillarum (Cushman), Spiroloculina antillarum d’Orbigny, Triloculina fi chteliana d’Orbigny, Euthymonacha polita (Chapman), Coscinospira acicularis (Batsch), Peneroplis arietinus (Batsch), Amphisorus hemprichii Ehrenberg, Sorites orbiculus Ehrenberg, Cymbaloporetta plana (Cushman). Beside these species, Peneroplis arietinus (Batsch), Spiroloculina antillarum d’Orbigny, Triloculina cf. fi chteliana d’Orbigny and Cymbaloporetta …
An Approach To Provenance, Tectonic And Redox Conditions Of Jurassic-Cretaceous Akkuyu Formation, Central Taurids, Turkey, Ali Sari, Derya Koca
An Approach To Provenance, Tectonic And Redox Conditions Of Jurassic-Cretaceous Akkuyu Formation, Central Taurids, Turkey, Ali Sari, Derya Koca
Bulletin of the Mineral Research and Exploration
Late Jurassic-Early Cretaceous Akkuyu formation was deposited on marine carbonate platform in Central Tarurids. The organic material of the unit is composed of Type III kerogen which is woody material transported from the land. Late Jurassic- Early Cretaceous is an important period which great anoxic events in deep sea bottom occurred due to the primary organic productivity in global sea surface. Use of several trace elements values (Ni, V, U, Cr, Co, Th) revealed that Late Jurassic-Early Cretaceous Akkuyu formation shows oxic, disoxic and anoxic paleoredox conditions. In this period the primary productivity was considerably high. Examination of specimen derived …
The Geology, Geochemistry And Genetical Features Of The Ormanbaşi Hill (Si̇nci̇k, Adiyaman) Copper Mineralization, Nail Yildirim, Semiha İlhan, Esra Yildirim, Cahit Dönmez
The Geology, Geochemistry And Genetical Features Of The Ormanbaşi Hill (Si̇nci̇k, Adiyaman) Copper Mineralization, Nail Yildirim, Semiha İlhan, Esra Yildirim, Cahit Dönmez
Bulletin of the Mineral Research and Exploration
The study area covers Ormanbaşı Hill of Adıyaman–Sincik County and its vicinity. Regional geological locations of Cu mineralizations that lie between the Southeastern Anatolian Foothill Belt and Taurus Orogenic Belt are conformable with thrust planes approximately extending in E-W directions. Cu mineralizations are observed in the form of lenses and layers within mudstone, diabase, spilite and claystone - shales of the Koçali complex. The primary genetic relations of these formations have completely been disappeared but have only been traced along thrust planes that are conformable with general tectonic lineaments. The ore structure is generally massive but is stockwork and disseminated …
Organic Geochemical And Petrographi̇cal Characteristics Of Karliova Halifan (Bingol) Coals, Orhan Kavak, Selami Toprak
Organic Geochemical And Petrographi̇cal Characteristics Of Karliova Halifan (Bingol) Coals, Orhan Kavak, Selami Toprak
Bulletin of the Mineral Research and Exploration
In this study, petrographic and organic geochemical characteristics of the Tertiary Karlıova-Halifan coals (Bingöl) were investigated. Determination of coal quality was based on chemical (moisture, volatile matter, fixed carbon, ash) and elemental analyses (C, H, O, S, N). The values of the huminite reflectances in organic matter-rich coal levels change between 0.368 and 0.573 %, which correspond to low maturity levels. These parameters are in good aggrement with their fluorescence colors, calorific value (average original-2266, dry-3177 Kcal/kg, upper calorific value) and average Tmax (417oC) values. The organic material in studied coals show low grade transformation due to low lithostatic pressure. …
Geochemical Properties And Rodingitization Of Diabase Dykes Cutting Peridotites In Yüksekova Complex (Özalp, Van - Turkey), Kurtuluş Günay, Ali Rıza Çolakoğlu, Üner Çakir
Geochemical Properties And Rodingitization Of Diabase Dykes Cutting Peridotites In Yüksekova Complex (Özalp, Van - Turkey), Kurtuluş Günay, Ali Rıza Çolakoğlu, Üner Çakir
Bulletin of the Mineral Research and Exploration
In this study, the geology of diabase dykes which cut peridotites of Yüksekova complex (Özalp, Van, Turkey) and the effects of Ca metasomatism that caused the metamorphism of these peridotites were investigated. Within the light of mineralogical and petrographical studies and geochemical data; it was determined that diabase dykes that cut peridotites in Yüksekova complex had shown rodingitization in various degrees due to Ca metasomatism. Depending on this metasomatism, Ca-Al-Mg rich silicates were formed. The mineralogy of rodingitized dykes with ophitic texture is composed of diopside, plagioclase, hydrogrossularite, chlorite, epidote and in minor amounts phlogopite, prehnite, apatite, calcite, opaque minerals. …
Some Structural Characteristics Of Azmar Anticline - Ne Iraq, Ibrahim Saad I. Al-Jumaily, Hadeer Ghazi M. Adeeb
Some Structural Characteristics Of Azmar Anticline - Ne Iraq, Ibrahim Saad I. Al-Jumaily, Hadeer Ghazi M. Adeeb
Bulletin of the Mineral Research and Exploration
The purpose of this study is to elucidate the structural style of Azmar structure, a major anticlinorium within the imbricate partition of Zagros fold-thrust belt in northeastern Iraq. Structural analysis of this anticlinorium demonstrated that it consists of four main NNW-SSE trending anticlines. They are imbricated SW ward through NE dipping reverse faults merge to a deep seated detachment. Furthermore, analysis of minor folds on hinge and limbs of the main Azmar anticline revealed the versatile style of such minor folds and their opposing vergencies. These features emphasize the role of faulting in development of the major fold and the …
Heat Flow Of The Kirşehi̇r Massif And Geological Sources Of The Radiogenic Heat Production, Uğur Akin, Yahya Çi̇ftçi̇
Heat Flow Of The Kirşehi̇r Massif And Geological Sources Of The Radiogenic Heat Production, Uğur Akin, Yahya Çi̇ftçi̇
Bulletin of the Mineral Research and Exploration
It is not often easy to distinguish the components of the mantle originated heat flow and radiogenic heat generation from each other. Surface heat flow is composed of two components. The first is the radiogenic heat source and the second is the heat flow originated from the upper mantle and the lower crust. In this study, heat flow and the radiogenic heat production of the Kýrþehir Massif and its geological sources were investigated. Curie point depths were calculated from aeromagnetic data. Geothermal gradient values were formed by considering the medium as homogenous and isotropic. The heat flow of the region …
The Use Of Tilt Angle In Gravity And Magnetic Methods, Uğur Akin, Betül Işikdeni̇z Şeri̇foğlu, Mehmet Duru
The Use Of Tilt Angle In Gravity And Magnetic Methods, Uğur Akin, Betül Işikdeni̇z Şeri̇foğlu, Mehmet Duru
Bulletin of the Mineral Research and Exploration
Tilt angle method, which has been recently used in investigating the boundaries of structures, reveals useful information on deep and shallow structures. Tilt angle is expressed as the arctan value of the ratio of the vertical derivative of the potential field to its horizontal derivative. The method was applied to Kýrþehir-Ý31 Sheet. As a result, the presence of volcanites buried under terrestrial sediments was demonstrated.
The Tectonostratigraphic Features Of The Belemedi̇k Tectonic Window And Its Surroundings, İsmet Alan, Şenol Şahi̇n, Alican Kop, Bülent Bakirhan, Nevzat Böke
The Tectonostratigraphic Features Of The Belemedi̇k Tectonic Window And Its Surroundings, İsmet Alan, Şenol Şahi̇n, Alican Kop, Bülent Bakirhan, Nevzat Böke
Bulletin of the Mineral Research and Exploration
The study area includes Belemedik and its vicinity located in the eastern part of Ecemiþ Fault Zone which constitutes the boundary between Central and Eastern Taurides.The area generally presents Belemedik Sequence belonging to Aladað Unit, Ophiolithic Melange and ophiolithic rocks belonging to Bozkýr Unit and Tertiary sediments overlying all these units. Within Belemedik Sequence, Late Devonian aged Küçükali, Carboniferous aged Belemedik, Early Permian aged Sarýoluk, Late Permian aged Kýzýlgeriþ and Yellice, EarlyMiddle Triassic aged Katarasý, Middle-Late Triassic aged Sarýyarma, Jurassic-Cretaceous aged Çamlýk and Yavça Formations were differentiated. In the previous studies on the vicinity of Belemedik, it was suggested that …
Mineralogical, Petrographical And Geochemical Characteristics Of Eldivan Ophiolite (Çankiri) Harzburgitic Tectonites, Tijen Üner, Üner Çakir
Mineralogical, Petrographical And Geochemical Characteristics Of Eldivan Ophiolite (Çankiri) Harzburgitic Tectonites, Tijen Üner, Üner Çakir
Bulletin of the Mineral Research and Exploration
The Eldivan Ophiolite is located at the central part of the Ýzmir-Ankara-Erzincan Ophiolitic Belt and between Þabanözü, Eldivan and Korgun towns. Ophiolite consists of volcanic-sedimentary series, metamorphic series, tectonites, cumulates and sheeted dikes from bottom to top. Tectonites, which are the main subject of the study, are generally represented by harzburgites and occassionally include dunite, pyroxenolite and chromitite levels. Harzburgites display of traces of plastic deformation (foliation, lineasyon, fold) A clear orientation in minerals can be observed as a result of in the tectonic sequence and grinding mechanisms. The degree of deformation decreases upwards. Harzburgites are generally composed of olivine …
Historical Evolution Of The Geological Researches In The Menderes Massif, O. Özcan Dora
Historical Evolution Of The Geological Researches In The Menderes Massif, O. Özcan Dora
Bulletin of the Mineral Research and Exploration
The Pan-African basement of Menderes Massif is made up of homogenous paragneiss and schist units (metaclastic sequence) which are intruded by metagabbros and gneisses derived from different types of granites. The basement is unconformably overlain by Early Palaeozoic metaclastic series consisting of quartzite and metaconglomerate at the lowest level. They show a transition into schists, and the Palaeozoic sequence ends with Permo-Carboniferous black marbles of Göktepe formation. Both basement and Palaeozoic sequence are intruded by Early Triassic leucocratic granites which were converted into orthogneisses by Alpine metamorphism. The Mesozoic series of the Menderes Massif begins with Late Triassic meta-sandstone/metaconglomerate intercalation …
Geology Of The Kütahya-Bolkardağ Belt, M. Cemal Göncüoğlu
Geology Of The Kütahya-Bolkardağ Belt, M. Cemal Göncüoğlu
Bulletin of the Mineral Research and Exploration
Kütahya-Bolkardağ Belt is one of the subunits of the Tauride-Anatolide Terrane extending from the Aegean Sea to the Hınzır Mountains. It includes numerous tectonic slices, formed during the closure of the İzmirAnkara Oceanic branch of the Neotethys. The tectonic slices are mainly derived from three different tectonic settings: i- rocks representing the oceanic lithosphere and subduction- accretion prism of the İzmir-Ankara Ocean (ophiolites and ophiolitic mélanges), ii- flysch-type deposits that were formed in foreland-basins on the northern and passive edge of the Tauride-Anatolide platform in front of the southward advancing nappes (olistostromes with olistoliths, sedimentary mélanges), and iii- successions, in …
The Geology And Geochronology Of The Pan-African And Triassic Metagranitoids In The Menderes Massif, Western Anatolia, Turkey, O. Ersin Koralay, Osman Candan, Cüneyt Akal, O. Özcan Dora, Fukun Chen, Muharrem Satir, Roland Oberhänsli
The Geology And Geochronology Of The Pan-African And Triassic Metagranitoids In The Menderes Massif, Western Anatolia, Turkey, O. Ersin Koralay, Osman Candan, Cüneyt Akal, O. Özcan Dora, Fukun Chen, Muharrem Satir, Roland Oberhänsli
Bulletin of the Mineral Research and Exploration
The Menders Massif is a metamorphic complex cropping out on a large region in the Alpine orogenic belt in Western Anatolia. The massif mainly, is made up of a Precambrian basement and the overlying Palaeozoic-Early Tertiary cover series. The basement comprises Late Proterozoic metaclastics composed of paragneiss and high grade micaschists, syn to post tectonical Pan African orthogneisses that have intruded into them, and metagabbros which have partly turned into eclogitic form. Cover series unconformably overlying the basement are divided into two units, in Palaeozoic and Mesozoic-Early Tertiary ages. The basement and cover series were influenced by an effective Alpine …
Stratigraphy Of The Pan - African Basement Of The Menderes Massif And The Relationship With Late Neoproterozoic/Cambrian Evolution Of The Gondwana, Osman Candan, O.Özcan Dora, Roland Oberhänsli, Ersin Koralay, Mete Çeti̇nkaplan, Cüneyt Akal, Muharrem Satir, Fukun Chen, Orhan Kaya
Stratigraphy Of The Pan - African Basement Of The Menderes Massif And The Relationship With Late Neoproterozoic/Cambrian Evolution Of The Gondwana, Osman Candan, O.Özcan Dora, Roland Oberhänsli, Ersin Koralay, Mete Çeti̇nkaplan, Cüneyt Akal, Muharrem Satir, Fukun Chen, Orhan Kaya
Bulletin of the Mineral Research and Exploration
The Menderes Massif, exposed in the Western Anatolia, is tectonically overlain to the north by the Afyon Zone and to the south by the Lycian Nappes. In the northwest, two high-pressure units, the Cycladic Complex and overlying the Lycian Nappes, as well as the nappes of Ýzmir - Ankara Zone tectonically overlay the Menderes Massif. The metamorphic rock succession of the Massif can be divided into two main units: 1-PanAfrican basement (core series) and 2-Paleozoic - Early Tertiary metasedimentary rocks (cover series). The PanAfrican basement shows a stratigraphy consisting of a partly migmatized metaclastic sequence and polymetamorphic basic and acidic …
Tavşanli Zone: The Northern Subducted Margin Of The Anatolidetauride Block, Aral I. Okay
Tavşanli Zone: The Northern Subducted Margin Of The Anatolidetauride Block, Aral I. Okay
Bulletin of the Mineral Research and Exploration
The Tavşanlı Zone constitutes the northern margin of the Anatolide-Tauride Block that has undergone high pressure-low temperature metamorphism during the Cretaceous. It is bounded in the north by the İzmir-Ankara suture and in the south by the rocks of the Afyon Zone. The Tavşanlı Zone is subdivided into four tectonic units. At the base there is the Orhaneli Group, which shows a regular stratigraphic succession that has underdone metamorphism at ~24 kbar pressure and 430-500 °C temperature during the Late Cretaceous (~80 Ma). From the base upward the Orhaneli Group consists of micaschist, marble and metabasite-metachertphyllite, and is tectonically overlain …
Emplacement Characteristics Of The Gneissic Granites In The Menderes Massif (Western Anatolia) And Their Implications On The Tectonic Evolution Of The Massif: New Field Observations And Radiogenic Age Determinations, Burhan Erdoğan, Erhan Akay, Altuğ Hasözbek
Emplacement Characteristics Of The Gneissic Granites In The Menderes Massif (Western Anatolia) And Their Implications On The Tectonic Evolution Of The Massif: New Field Observations And Radiogenic Age Determinations, Burhan Erdoğan, Erhan Akay, Altuğ Hasözbek
Bulletin of the Mineral Research and Exploration
Understanding the ages and emplacement mechanism of the gneissic granites cropping out in large areas of the Menderes Massif has a critical importance in its tectonic evolution. Based on some radiogenic age data, the gneissic granites and the surrounding high-grade micaschists have been advocated to be the Precambrian "Core Succession" that was undergone high-grade metamorphism during the Pan-African Orogenesis. The micascists and marbles of Palaezoic-Mesozoic age have been defined as the "Cover Succession" unconformably overlying the core assemblages. It has also been indicated that during the Alpine Orogenesis and by the Main Menderes Metamorphism the core and cover successions were …
Polymetamorphic Evolution Of The Pan-African Basement And Palaeozoic-Early Tertiary Cover Series Of The Menderes Massif, Osman Candan, Roland Oberhänsli, O. Özcan Dora, Mete Çeti̇nkaplan, O. Ersin Koralay, Gaëtan Rimmelé, Fukun Chen, Cüneyt Akal
Polymetamorphic Evolution Of The Pan-African Basement And Palaeozoic-Early Tertiary Cover Series Of The Menderes Massif, Osman Candan, Roland Oberhänsli, O. Özcan Dora, Mete Çeti̇nkaplan, O. Ersin Koralay, Gaëtan Rimmelé, Fukun Chen, Cüneyt Akal
Bulletin of the Mineral Research and Exploration
The Menderes Massif exposing in the Western Anatolia substantially presents a complex tectonostratigraphy as a result of Late Alpine compressional tectonism. The lithostratigraphical succession of this crystalline complex can be divided into two units: 1- The Pan-African basement (core series) and 2-Palaeozoic - Early Tertiary metasedimentary rocks (cover series). The Pan-African basement of the Menderes Massif is made up of a Late Neoproterozoic metaclastic sequence consisting of paragneisses and conformably overlying micaschists. This high-grade metaclastic sequence is extensively migmatized and intruded by the syn- to post-PanAfrican gabbros and granitoids. The primary contact relationship between the core and cover series is …
The Geoarcheology Of The Yeni̇kapi Excavation Site In The Last 8000 Years And Geological Traces Of Natural Disasters (İstanbul - Turkey), Doğan Peri̇nçek
The Geoarcheology Of The Yeni̇kapi Excavation Site In The Last 8000 Years And Geological Traces Of Natural Disasters (İstanbul - Turkey), Doğan Peri̇nçek
Bulletin of the Mineral Research and Exploration
During the excavations of the Istanbul Archaeological Museum for the Marmaray Project, which will connect two sides of the Bosphorus by rail tube tunnel, an ancient Byzantine Port (Port of Theodosius) was explored around Yenikapı, district of Istanbul. The aim of the study is to understand the stratigraphical sequence observed in the excavation site, to recognize the traces of natural events observed within the sequence and to reach the geoarcheological data that will provide contribution to the archeological studies by geological findings. The sequence studied in the Yenikapý Excavation site was divided into 9 different units. The sequence is transgressive …
Apatite-Bearing Magnetite Deposit Of Pinarbaşi (Adiyaman); Geological, Geochemical Properties And Economical Potential, Hüseyin Çelebi̇, Cahit Helvaci, Ali Uçurum
Apatite-Bearing Magnetite Deposit Of Pinarbaşi (Adiyaman); Geological, Geochemical Properties And Economical Potential, Hüseyin Çelebi̇, Cahit Helvaci, Ali Uçurum
Bulletin of the Mineral Research and Exploration
In the near vicinity of the apatitebearing magnetite deposit of Pýnarbaşı Permianaged Malatya Metamorphites consisting of, from bottom to top, chlorite schists, cericite schists, calcschists and recrystallized limestones cover large areas. These folded and faulted metamorphic rocks, which thrust over the Eoceneaged Maden Complex, underwent one regional metamorphism and one subsequent retrograde metamorphism in the greenschist facies. Mineralizations associated with chloritesericite schists are in the form of magnetitebearing apatite lenses. The ore horizons, which reach a thickness of 15 m and have a northsouth strike, dip approximately 30 degrees to the west. In the field, massive, banded and disseminated ore …
Geology Of The Early Miocene Alaçamdağ (Dursunbey-Balikesi̇r) Magmatic Complex And Implications For The Western Anatolian Extensional Tectonics, Fuat Erkül, Sibel Tatar Erkül
Geology Of The Early Miocene Alaçamdağ (Dursunbey-Balikesi̇r) Magmatic Complex And Implications For The Western Anatolian Extensional Tectonics, Fuat Erkül, Sibel Tatar Erkül
Bulletin of the Mineral Research and Exploration
Extensional regime in western Anatolia caused development of metamorphic core complexes, NEand E-W-trending basins and emplacement of magmatic rocks since Late Oligocene and Early Miocene. The Alaçamdað magmatic complex, which is located to the west of the Simav metamorphic core complex, includes significant data that highlight the style of extensional regime in western Turkey. It consists of Early Miocene granitic intrusions and volcanic rocks with variable compositions ranging from basalt to rhyolite. The granitic intrusions that were emplaced into the basement rocks of the Menderes Massive and Ýzmir-Ankara Zone are divided into two facies based on their lithological and textural …