Browsing by Author "Yiğitbaş, Erdinç"

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    Citation - WoS: 76
    Citation - Scopus: 79
    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
    (Elsevier Science Bv, 2004) Yiğitbaş, Erdinç; Kerrich, Robert; Yılmaz, Yücel; Elmas, Ali; Xie, QL
    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