Ophiolite emplacement by strike-slip tectonics between the Pontide Zone and the Sakarya Zone in northwestern Anatolia, Turkey

Northwestern Anatolia contains three main tectonic units: (a) the Pontide Zone in the north which consists mainly of the Istanbul-Zonguldak Unit in the west and the Balhdag-Kure Unit in the east; (b) the Sakarya Zone (or Continent) in the south, which is juxtaposed against the Pontide Zone due to the closure of Paleo-Tethys prior to Late Jurassic time; and. (c) the Armutlu-Ovacik Zone which appears to represent a tectonic mixture of both zones. These three major tectonic zones are presently bounded by the two branches of the North Anatolian Transform Fault. The two tectonic contacts follow older tectonic lineaments (the Western Pontide Fault) which formed during the development of the Armutlu-Ovacik Zone. Since the earliest Cretaceous, an overall extensional regime dominated the region. A transpressional tectonic regime of Coniacian/Santonian to Campanian age caused the welding of the Istanbul-Zonguldak Unit to the Sakarya Zone by an oblique collision. In the Late Campanian, a transtensional tectonic regime developed, forming a new basin within the amalgamated tectonic mosaic. The different tectonic regimes in the region were caused by activity of the Western Pontide Fault. Most of the ophiolites within the Armutlu-Ovacik Zone belong to the Paleo-Tethyan and/or pre-Ordovician ophiolitic core of the Istanbul-Zonguldak Unit. The Late Cretaceous ophiolites in the eastern parts of the Armutlu-Ovacik Zone were transported from Neo-Tethyan ophiolites farther east by left-lateral strike-slip faults along the Western Pontide Fault. There is insufficient evidence to indicate the presence of an ocean (Intra-Pontide Ocean) between the Istanbul-Zonguldak Unit and the Sakarya Zone during Late Cretaceous time

ABIS '19: Proceedings of the 23rd International Workshop on Personalization and Recommendation on the Web and Beyond, Hof, Germany — September 17 - 17, 2019

Item does not contain fulltextABIS '19: Proceedings of the 23rd International Workshop on Personalization and Recommendation on the Web and Beyond, Hof, Germany — September 17 - 17, 201

Pre-Cenozoic tectono-stratigraphic components of the Western Pontides and their geological evolution

The Western Pontides of northern Turkey are a tectonic mosaic formed as a result of progressive welding of continental and oceanic fragments during the Palaeozoic and Mesozoic. In this region, three approximately east-west trending zones can be distinguished: the Pontide Zone representing the Pontides sensu stricto; the Sakarya Zone which is regarded as the southerly continental fragment; and the Armutlu-Ovacik Zone which is viewed as a tectonic mixture of the two zones

Usability Evaluation of Model-Driven Cross-Device Web User Interfaces

Part 4: Tools and Tool-SupportInternational audienceUser Interface (UI) development is a challenging task as modern UIs are expected to be available across a wide range of diverse platforms while assuring high usability for heterogeneous users. Model-driven engineering principles have been applied in the context of multi-device and cross-device UI development to tackle complexity in development. While previous work related to usability evaluation of model-driven UIs primarily focused on single- and multi-device UIs, an investigation of the usability of model-driven cross-device UIs was not fully covered yet. In this paper, therefore, we present a model-driven UI development (MDUID) approach for cross-device UIs and analyze whether the applied MDUID approach has a positive impact on the usability of the generated UI. To accomplish this, we conduct a usability evaluation based on the generated UI for a cross-channel banking web application. The usability evaluation results provide detailed feedback regarding fulfillment of different usability criteria and enable improvement of involved models as well as model transformations

HT '19: Proceedings of the 30th ACM Conference on Hypertext and Social Media, Hof, Germany — September 17 - 20, 2019

Item does not contain fulltextHT '19: Proceedings of the 30th ACM Conference on Hypertext and Social Media, Hof, Germany — September 17 - 20, 201

Major neotectonic features of eastern Marmara region, Turkey: development of the Adapazari-Karasu corridor and its tectonic significance

Eastern Marmara region consists of three different morphotectonic units: Thrace-Kocaeli Peneplain (TKP) and Camdag-Akcakoca Highland (CAH) in the north, and Armutlu-Almacik Highland in the south of the North Anatolian Fault Zone (NAFZ). The geologic-morphologic data and seismic profiles from the Sakarya River offshore indicate that the boundary between the TKP in the west and 1 CAH in the east is a previously unrecognized major NNE-SSW-trending strike-slip fault zone with reverse component. The fault zone is a distinct morphotectonic corridor herein named the Adapazari-Karasu corridor (AKC) that runs along the Sakarya River Valley and extends to its submarine canyon along the southern margin of the Black Sea in the north. It formed as a transfer fault zone between the TKP and CAH during the Late Miocene; the former has been experiencing extensional forces and the latter compressional forces since then. East-West-trending segments of the NAFZ cuts the NE-SW-trending AKC and their activity has resulted in the formation of a distinct fault-bounded morphology, which is characterized by alternating E-W highlands and lowlands in the AKC. Furthermore, this activity has resulted in the downward motion of an ancient delta and submarine canyon of the Sakarya River in the northern block of the NAFZ below sea level so that the waters of the Black Sea invaded them. The NE-SW-trending faults in the AKC were reactivated with the development of the NAFZ in the Late Pliocene, which then caused block motions and microseismic activities throughout the AKC. Copyright (C) 2004 John Wiley Sons, Ltd

Characteristics and geochemistry of Precambrian ophiolites and related volcanics from the Istanbul-Zonguldak Unit, Northwestern Anatolia, Turkey: following the missing chain of the Precambrian South European suture zone to the east

The Precambrian metamorphic basement of the Istanbul-Zonguldak Unit (IZU), NW Anatolia, Turkey, is represented by the Sunnice Group, composed essentially of four different metamorphic assemblages: (1) Cele metaophiolite, (2) Yellice metavolcanics, (3) Demirci metamorphics, and (4) Dirgine metagranite. The field relations and structural characteristics of these units were studied and representative geochemical analyses of Cele metaophiolite and related volcanics were obtained from the Sunnice, Almacik, and Arrnutlu areas. Collectively, the results are interpreted as the Cele Magmatic suite displaying disrupted components of a complete suprasubduction ophiolite. The Yellice metavolcanic sequence contains fragments of both an intra oceanic island arc and a back-arc basin association built on the ophiolite. The Demirci metamorphics, represent reworked continental fragments forming the base of the metamorphic massifs. These three different metamorphic units were intruded, after their amalgamation, by the Dirgine granitic pluton dated at 570-590 Ma [Geol. Mag. 136 (5) (1999) 579; Int. J. Earth Sci. (Geol. Rundsch) 91 (3) (2002) 469]. The metamorphic tectonic units and the metagranite are collectively overlain by a thick Lower Ordovician to Carboniferous sedimentary cover known as the Istanbul-Zonguldak succession. The collisional event which led to the amalgamation of the different tectonic entities is partly penecontemporaneous with the Pan-African orogeny supporting the view that the basement of the IZU formed a link between the Pan-African and Trans-European suture zones. (C) 2004 Elsevier B.V. All rights reserved