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Articles 1 - 8 of 8
Full-Text Articles in Geology
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 …
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 …
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 …
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 …
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 …
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 …