Geochemistry and U–Pb zircon geochronology of metagranites in Istranca (Strandja) Zone, NW Pontides, Turkey: Implications for the geodynamic evolution of Cadomian orogeny

Şahin, Sabah Yılmaz; Aysal, Namık; Güngör, Yıldırım; Peytcheva, Irena; Neubauer, Franz

doi:10.1016/j.gr.2013.07.011

Cited by 88 publications

(11 citation statements)

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“…U-Pb zircon geochronology of various orthogneiss in Turkey and in Iran Neoproterozoic basement yielded $599-525 Ma ages. A cumulative zircon U-Pb ages of all available data for Cadomian igneous rocks of the Turkey and Iran defines a concentration in a narrow time interval about 550 Ma (Yılmaz-S ßahin et al, 2014;Moghadam et al, 2015;Avigad et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

“…The Late Neoproterozoic-Cambrian basement rocks of Turkey are generally interpreted as the dispersed fragments of the Cadomian active margin (Ustaömer et al, 2009(Ustaömer et al, , 2012Gürsu et al, 2015). Recent efforts to understand the Cadomian basement in Turkey emphasize dating of metamorphosed magmatics (granites and gabbros) and gneissic rocks and provenance analysis of Paleozoic sedimentary units (e.g., Ustaömer et al, 2009Ustaömer et al, , 2012Zlatkin et al, 2013;Yılmaz-S ßahin et al, 2014;Gürsu et al, 2015;Candan et al, 2015;Avigad et al, 2016). Gondwana-derived Late Proterozoic/Early Paleozoic units in Turkey mainly crop out in five separate Alpine tectonic units; (i) the Istanbul-Zonguldak Terrane (IZT), (ii) the Tauride-Anatolide Platform (TAP), (iii) Menderes Massif, (iv) Bitlis-Pütürge Massifs and (v) the South Anatolian Autochthone Belt (Fig.…”

Section: Bitlis-pütürge Massifsmentioning

confidence: 99%

“…1b). Ustaömer et al (2005Ustaömer et al ( , 2009Ustaömer et al ( , 2012, Yılmaz-S ßahin et al (2014) and Moghadam et al (2015). (b) Distribution of Cadomian Terrenes in Turkey.…”

Section: Bitlis-pütürge Massifsmentioning

confidence: 99%

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Zircon U-Pb age and geochemical constraints on the origin and tectonic implication of Cadomian (Ediacaran-Early Cambrian) magmatism in SE Turkey

Beyarslan

Lin

Bingöl

et al. 2016

Journal of Asian Earth Sciences

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The Bitlis-Pütürge Massifs and Derik volcanics that crop out in the Southeast Anatolian Belt are parts of the Cadomian domain in Anatolia where relicts of the oldest continental crust of Turkey are exposed. The Bitlis-Pütürge Massifs contain a Neoproterozoic basement, with overlying Phanerozoic rocks that were imbricated, metamorphosed and thrust over the edge of Arabia during the Alpine orogeny. The basement consists mainly of granitic to tonalitic augen gneisses and metagranites, associated with schists, amphibolites and paragneisses. Based on whole-rock geochemical data, the augen gneisses are interpreted to have protoliths crystallized from subduction zone magmas. This study conducted the first zircon dating on two augen gneisses that gave 206 Pb/ 238 U dates of 551 ± 6 and 544 ± 4 Ma, interpreted as the formation ages of the Pütürge Massif, broadly coeval to those of the Bitlis metagranites and the Derik volcanics that occurred from ca. 581 to 529 Ma (the Ediacaran-early Cambrian). The eHf(t) values (+1.2 to À5.3) of the dated zircons, with crustal model ages (T DM C) from 1.4 to 1.8 Ga, indicate that formation of the Pütürge Massif involves an older, most likely the Mesoproterozoic, continental crust component. Similar to the Bitlis-Pütürge gneisses, coeval basement rocks are widespread in the Tauride-Anatolide platform (e.g., the Menderes Massif). All these dispersed Cadomian basement rocks are interpreted as fragments of the Ediacaran-Early Cambrian continental arcs bordering the active margin of northern Gondwana.

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Section: Discussionmentioning

confidence: 99%

Section: Bitlis-pütürge Massifsmentioning

confidence: 99%

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Zircon U-Pb age and geochemical constraints on the origin and tectonic implication of Cadomian (Ediacaran-Early Cambrian) magmatism in SE Turkey

Beyarslan

Lin

Bingöl

et al. 2016

Journal of Asian Earth Sciences

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“…They consist of three distinct terranes named Rhodope‐Strandja Massif, Istanbul Zone, and Sakarya Zone (Okay & Tüysüz, ; Figure ). The Rhodope‐Strandja Massif is a large crystalline terrane with Neoproterozoic metagranites (Yılmaz‐Şahin et al, ) and Variscan quartzo‐feldspathic gneissic basement intruded by Carboniferous–early Permian granitoids. This basement is stratigraphically covered by a Mesozoic metasedimentary cover (Okay et al, ; Sunal et al, ).…”

Section: Geological Frameworkmentioning

confidence: 99%

Striking Variation in the Provenance of the Lower and Upper Cretaceous Turbidites in the Central Pontides (Northern Turkey) Related to the Opening of the Black Sea

2019

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The Lower and Upper Cretaceous turbidites cover large areas in the central Pontides (north-central Turkey). The Lower Cretaceous turbidites are over 2 km thick and are exposed in an area of 400 × 90 km. The Upper Cretaceous (Campanian-Maastrichtian) forearc turbidites are up to 1,200 m thick and crop out in NW-SE trending elongate basins about 40 km wide, extending along the central and eastern Pontides. We present new detrital zircon U-Pb ages, petrography, and paleocurrent measurements from the Campanian-Maastrichtian turbidites and compare them to those from the Lower Cretaceous turbidites. The Campanian-Maastrichtian sandstones are dominated by carbonate and magmatic lithic grains. The paleocurrents indicate paleoflow directions parallel to the axis of the basin. The sandstones are dominated by Late Cretaceous zircons indicating derivation mainly from the coeval magmatic arc. In contrast, the Lower Cretaceous sandstones are dominated by quartz and feldspar, and paleocurrents indicate southward transport. The detrital zircons in the Lower Cretaceous sandstones are mainly Archean and Paleoproterozoic, indicating that in the Early Cretaceous, the source of turbidites was from the Archean-Paleoproterozoic Ukrainian Shield to the north. After the opening of the Black Sea in the Late Cretaceous, the connection between the Pontides and the East European Platform was severed and the Campanian-Maastrichtian turbidites were sourced principally from the magmatic arc in the Pontides. Our results indicate that the Campanian-Maastrichtian turbidites represent the first turbiditic sequence deposited after the opening of the Black Sea.

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“…Additionally, coeval Ediacaran to early Cambrian I-type arc-related magmatism was determined in the İstanbul (Chen et al, 2002;Ustaömer et al, 2005) and Istranca (Yilmaz Şahin et al, 2014) terranes of the Western Pontides.…”

Section: Late Cadomian Magmatic Stage (Ediacaran To Mid-cambrian 562mentioning

confidence: 99%

Pre-Alpine evolution of a segment of the North-Gondwanan margin: Geochronological and geochemical evidence from the central Serbo-Macedonian Massif

et al. 2016

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Geochemistry and U–Pb zircon geochronology of metagranites in Istranca (Strandja) Zone, NW Pontides, Turkey: Implications for the geodynamic evolution of Cadomian orogeny

Cited by 88 publications

References 64 publications

Zircon U-Pb age and geochemical constraints on the origin and tectonic implication of Cadomian (Ediacaran-Early Cambrian) magmatism in SE Turkey

Zircon U-Pb age and geochemical constraints on the origin and tectonic implication of Cadomian (Ediacaran-Early Cambrian) magmatism in SE Turkey

Striking Variation in the Provenance of the Lower and Upper Cretaceous Turbidites in the Central Pontides (Northern Turkey) Related to the Opening of the Black Sea

Pre-Alpine evolution of a segment of the North-Gondwanan margin: Geochronological and geochemical evidence from the central Serbo-Macedonian Massif

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