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Temporal, geochemic...
Temporal, geochemical and geodynamic evolution of the Late Cretaceous subduction zone volcanism in the eastern Sakarya Zone, NE Turkey : Implications for mantle-crust interaction in an arc setting
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- Aydin, Faruk (author)
- Karadeniz Technical University, Department of Geological Engineering
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- Saka, Simge Oguz (author)
- Karadeniz Technical University, Department of Geological Engineering
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- Sen, Cüneyt (author)
- Karadeniz Technical University, Department of Geological Engineering
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- Dokuz, Abdurrahman (author)
- Gümüşhane University, Department of Geological Engineering
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- Aiglsperger, Thomas (author)
- Luleå tekniska universitet,Geovetenskap och miljöteknik
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- Uysal, Ibrahim (author)
- Karadeniz Technical University, Department of Geological Engineering
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- Kandemir, Raif (author)
- Recep Tayyip Erdoğan University, Department of Geological Engineering
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- Karsli, Orhan (author)
- Recep Tayyip Erdoğan University, Department of Geological Engineering
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- Sari, Bilal (author)
- Dokuz Eylül University, Department of Geological Engineering
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- Baser, Rasim (author)
- Karadeniz Technical University, Department of Geological Engineering
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(creator_code:org_t)
- Elsevier, 2020
- 2020
- English.
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In: Journal of Asian Earth Sciences. - : Elsevier. - 1367-9120 .- 1878-5786. ; 192
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The Late Cretaceous Artvin volcanic rocks (LCAVs) from the eastern Sakarya zone (ESZ) of NE Turkey are composed of mafic/basaltic (S1-Çatak and S2-Çağlayan) and felsic/acidic (S1-Kızılkaya and S2-Tirebolu) rock types that occurred in two successive stages: (i) first stage (S1: Turonian–Early Santonian) and (ii) second stage (S2: Late Santonian–Campanian). Clinopyroxene thermobarometric results point that the S2-Çağlayan basaltic rocks have crystallised at higher temperatures and under deeper crustal conditions than those of the S1-Çatak basaltic rocks.The LCAVs show a wide compositional spectrum, ranging from tholeiite to calc-alkaline/shoshonite and are typically represented by a geochemical composition resembling subduction-related arc rocks although the 87Sr/86Sr(i) (0.7044–0.7071) and ɛNd(i) values (−0.63 to + 3.47) as well as 206Pb/204Pb(i) (18.07–18.56), 207Pb/204Pb(i) (15.57–15.62) and 208Pb/204Pb(i) (37.12–38.55) ratios show very limited variation. The parent magmas of the S1-Çatak and S2-Çağlayan mafic volcanic rocks were derived from underplated basaltic melts that originated by partial melting of metasomatised spinel lherzolite and spinel-garnet lherzolite, respectively. It is proposed that the compositions of the S1-Kızılkaya (mainly dacitic) and S2-Tirebolu (rhyolitic to trachytic) felsic rocks were particularly controlled by metasomatised mantle–crust interaction and MASH zone + shallow crustal fractionation processes. Our data, together with data from previous studies, suggest that the S1- and S2-mafic and felsic rocks of the LCAVs (~95–75 Ma) are the products of two-stage volcanic event that took place during the northward subduction of the northern Neotethys Ocean (NNO).
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geokemi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geochemistry (hsv//eng)
Keyword
- Late Cretaceous
- Subduction
- Volcanism
- Mantle–crust interaction
- Sakarya Zone
- Eastern Pontides
- NE Turkey
- Applied Geochemistry
- Tillämpad geokemi
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Aydin, Faruk
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Saka, Simge Oguz
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Sen, Cüneyt
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Dokuz, Abdurrahm ...
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Aiglsperger, Tho ...
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Uysal, Ibrahim
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show more...
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Kandemir, Raif
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Karsli, Orhan
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Sari, Bilal
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Baser, Rasim
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Geochemistry
- Articles in the publication
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Journal of Asian ...
- By the university
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Luleå University of Technology