Origin and evolution of the Havran Unit, Western Sakarya basement (NW Turkey): new LA-ICP-MS U-Pb dating of the metasedimentary-metagranitic rocks and possible affiliation to Avalonian microcontinent

Aysal, Namık; Öngen, Sinan; Peytcheva, Irena; Keskin, Mehmet

doi:10.1080/09853111.2014.882536

Cited by 35 publications

(9 citation statements)

References 59 publications

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“…The Early Devonian age peak at 414 ± 4 Ma (n = 4) of the U-Pb analyses of detrital zircons of the Talea Ori group (central Crete) is similar to the Devonian ages in NW Turkey of metagranodiorite from the Biga peninsula (390 to 400 Ma; Okay et al1996Okay et al , 2006. Aysal et al (2012a) and Sunal (2012) dated five granitoids of the West Sakarya Zone (NW Turkey) with U-Pb zircon ages from 390 to 401 Ma. Their wall rocks are metasediments which contain a U-Pb age spectrum of detrital zircons with a dominant Ediacaran age peak and two age peaks during the Tonian and one at 1 Ga. Aysal et al (2012b) interpreted the amount of 6 % Mesoproterozoic zircons of the age spectrum of the detrital zircons of the wall rock as Avalonian/Amazonian related, but if we consider the Tonian-and Stenian-aged zircons as one age group (11 %, Grenvillian) then only 3 % zircons with an age between 1.15 Ga and 1.6 Ga are left.…”

Section: B3 Source Regions Of Detrital Zircons In the Lower Taleamentioning

confidence: 99%

New constraints from U–Pb dating of detrital zircons on the palaeogeographic origin of metasediments in the Talea Ori, central Crete

et al. 2020

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High-pressure low-temperature metamorphic sediments of the Phyllite–Quartzite unit sensu stricto and the Talea Ori group are investigated in the field, microstructurally and by U–Pb dating of detrital zircons to shed light on their palaeogeographic origin. Zircon age spectra with ages >450 Ma of the Phyllite–Quartzite unit sensu stricto indicate a palaeogeographic origin at the northern margin of East Gondwana. In contrast, the lower stratigraphic, siliciclastic formations of the Talea Ori group show a high number of well-rounded Cambrian to Early Carboniferous aged zircons and a Neoproterozoic zircon age spectrum with East Gondwana affinity. Based on the comparison of zircon age data, a possible distal sediment source is the Sakarya Zone at the southern active margin of Eurasia. To reconcile the zircon data with the geological observations we propose different alternative models, or a combination of these, including sediment transport from the Sakarya Zone and/or a westerly source towards the northern margin of Gondwana as well as terrane-displacement of the Sakarya Zone. Also, a palaeogeographic origin of the Talea Ori group at the southern active margin of Eurasia cannot be excluded. This alternative, however, would not be consistent with the usually assumed association of the Talea Ori group with the Plattenkalk unit characterized by a palaeogeographic origin at the northern margin of Gondwana.

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Section: B3 Source Regions Of Detrital Zircons In the Lower Taleamentioning

confidence: 99%

New constraints from U–Pb dating of detrital zircons on the palaeogeographic origin of metasediments in the Talea Ori, central Crete

et al. 2020

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“…U-Pb zircon ages yield Early to Middle Devonian age for the Çamlık granodiorite (Aysal et al, 2012b). The age of another Devonian granitoid, the Karacabey Pluton, ranges from 393 Ma to 400 Ma (Sunal, 2012;Aysal et al, 2012a). These granitoids are often associated with medium to high-grade metamorphic basement rocks occurring in the Uludağ Massif, Kazdağ Massif, Kurtoğlu metamorphic complex, and Pulur Massif within the Sakarya Zone.…”

Section: Source Rock and Provenance Of The Jurassic Sandstonesmentioning

confidence: 99%

Petrography, geochemistry, and provenance of Jurassic sandstones from the Sakarya Zone, NW Turkey

Şengün¹,

Koralay²

2019

Turkish J Earth Sci

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The composition of sedimentary rocks reflects the erosional unroofing, tectonic uplift, and changes in climate and environment. The chemical composition of clastic sedimentary rocks is controlled by the composition of source rocks, hydraulic sorting, chemical weathering during diagenesis, and transport, which are affected by tectonic setting, climate, and the nature of the depositional environment (

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“…Moreover, there are tectonic slices of Middle Permian ophiolite (Topuz et al, 2018). In the Karacabey region, these basement units are unconformably overlain by Jurassic sandstone and carbonate (Ergül et al, 1986;Altıner, 1991;Sunal, 2012;Aysal et al, 2012a). Besides those direct occurrences of pre-Jurassic basements in the Sakarya Zone, a wide range Altunkaynak et al (2012) and the references therein, Altunkaynak and Dilek (2013), Gülmez et al (2013), Ersoy and Palmer (2013), Kasapoğlu et al (2016), Topuz and Okay (2017). of pre-Jurassic detrital zircon ages revealing the complete basement history of the Sakarya Zone was reported (Akdoğan et al, 2018;Şengün and Koralay, 2019).…”

Section: Geological Settingmentioning

confidence: 99%

The Early Eocene Ekmekçi granodiorite porphyry in the Karacabey region(Sakarya Zone, NW Turkey)

Sunal¹,

Erturaç²,

Topuz³

et al. 2019

Turkish J Earth Sci

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The Ekmekçi granodiorite porphyry is a unit in the E-W trending, postcollisional Eocene magmatic rocks of northern Anatolia. It occurs as a relatively small stock, but represents a link between plutonic and volcanic rocks. This Early Eocene granodiorite porphyry intruded into the Upper Triassic rocks of the Karakaya complex in the Sakarya Zone. In this study we present geochemical and zircon U-Pb LA-ICP-MS age data to contribute to understanding the Early Tertiary postcollisional tectonic setting of NW Anatolia. The granodiorite porphyry includes plagioclase, quartz, hornblende, K-feldspar, biotite, and minor zircon, apatite, sphene, and opaque minerals. The stock displays medium-K calc-alkaline I-type and metaluminous affinity. Similar to other Eocene magmatic rocks, it displays characteristic features of subduction-related magmatism, such as enrichment in large-ion lithophile elements relative to highfield strength elements and enrichment of light rare earth elements relative to heavy rare earth elements with a lack of significant Eu anomalies. They are characterized by homogeneous initial Sr and Nd isotopic compositions of 0.7044-0.7049 and 0.51255-0.51260, respectively. Zircon U-Pb data indicate that the Ekmekçi granodiorite porphyry was emplaced at 5.1 ± 1 Ma (2s Ypresian). Geochemically, the Ekmekçi granodiorite porphyry is similar to mafic volcanic rocks rather than the plutonic rocks of the same age. It was emplaced to the north of the İzmir-Ankara-Erzincan Suture (northern plutonic belt of NW Anatolia) and can be correlated with southern plutons such as Orhaneli, Topuk, Tepeldağ, Gürgenyayla, and Sivrihisar in the Anatolide-Tauride block in terms of age.

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Origin and evolution of the Havran Unit, Western Sakarya basement (NW Turkey): new LA-ICP-MS U-Pb dating of the metasedimentary-metagranitic rocks and possible affiliation to Avalonian microcontinent

Cited by 35 publications

References 59 publications

New constraints from U–Pb dating of detrital zircons on the palaeogeographic origin of metasediments in the Talea Ori, central Crete

New constraints from U–Pb dating of detrital zircons on the palaeogeographic origin of metasediments in the Talea Ori, central Crete

Petrography, geochemistry, and provenance of Jurassic sandstones from the Sakarya Zone, NW Turkey

The Early Eocene Ekmekçi granodiorite porphyry in the Karacabey region(Sakarya Zone, NW Turkey)

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