Petrogenesis of plio-quaternary intra-plate continental alkaline lavas from the İskenderun Gulf (Southern Turkey): Evidence for metasomatized lithospheric mantle

Güçtekin, Aykut

doi:10.1016/j.chemer.2018.08.001

Cited by 4 publications

(3 citation statements)

References 100 publications

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“…9C) towards residual phlogopite in their source. Results of our modelling are in agreement with those of Oyan (2018) for Osmaniye basalts, whereas those of Güçtekin (2018) invokes amphibole bearing source also for these rocks.…”

Section: Accepted Manuscriptsupporting

confidence: 87%

“…During the Pliocene to Quaternary time, left lateral strike-slip Yumurtalik and Karataş-Osmaniye fault systems developed (Fig. 1B), along which several basaltic massive lava flows were emplaced (Kelling et al, 1987;Parlak et al, 1997;Arger et al, 2000;Varol & Alpaslan, 2012;Güçtekin, 2018). These basaltic products yielded ages ranging from 2.3 to 0.12 Ma (Early-Late Pleistocene; Arger et al, 2000;Oyan, 2018), and cover Neogene sedimentary units.…”

Section: Osmanyie Volcanic Fieldmentioning

confidence: 99%

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Geochemical and isotopic (Sr-Nd-Pb) signature of crustal contamination in Na-alkali basaltic magmas of South-East Turkey

Agostini¹,

Giuseppe²,

Manetti³

et al. 2022

IJG

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Widespread sodic alkali basaltic activity developed from Early Miocene to Pleistocene, around the northern termination of the Dead Sea Fault Zone, and in the North-West foreland of the Arabian Plate, in South-East Turkey. Volcanic activity started within the Gaziantep Basin during the Early-Late Miocene (21.2-7.0 Ma), and further East, abundant magmatism brought to the formation of the Karacadağ Shield Volcano, starting from Middle Miocene throughout the Holocene (12.1-0.01 Ma). During the Pleistocene, volcanism developed also around the Anatolia-Africa-Arabia triple junction, along the Karataş-Osmaniye Fault, and along the northern segment of the Dead Sea Fault, in the Karasu Basin. Volcanic rocks emplaced in these areas mainly consist of abundant basalts and basanites, with subordinate hawaiites and basaltic andesites, mostly showing Na-alkaline affinity, whereas some of the older products show calc-alkaline signatures. As a whole, these volcanic rocks show LREE/HREE and HFSE/LILE ratios similar to those of OIB-like magmas. Some trace element and radiogenic isotope variations are observed amongst the less differentiated samples and they are explained by partial melting of a heterogeneous subcontinental mantle source at variable depths, mostly in the garnet stability field. The largest compositional variability observed, however, is attributed to differentiation processes, resulting in quite remarkable chemical and isotopic variations (e.g., 87 Sr/ 86 Sr = 0.

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Section: Accepted Manuscriptsupporting

confidence: 87%

Section: Osmanyie Volcanic Fieldmentioning

confidence: 99%

Geochemical and isotopic (Sr-Nd-Pb) signature of crustal contamination in Na-alkali basaltic magmas of South-East Turkey

Agostini¹,

Giuseppe²,

Manetti³

et al. 2022

IJG

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“…Previous studies on volcanism in the North Arabian Plate hypothesized the presence of hydrous phases in the mantle source, such as amphibole and/or phlogopite-rich veins, or a combination of the two, as also supported by the occurrence of metasomatised lithospheric mantle xenoliths and amphibole-rich cumulate crustal xenoliths 27,35 . Studied samples are characterised by a pronounced negative Pb anomaly in the Primitive Mantle-normalised trace elements (Fig.…”

Section: Discussionmentioning

confidence: 97%

A heterogeneous subcontinental mantle under the African-Arabian plate boundary revealed by boron and radiogenic isotopes

Agostini

Giuseppe

Manetti

et al. 2020

Preprint

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The north and northwest margins of the Arabian plate are locus of a diffuse and long-lasting (early Miocene to Pleistocene) Na-alkali basaltic volcanism, sourced in the asthenosphere mantle. The occurrence and 20-Ma persistence of magma supply under the study area is explained considering that upwelling asthenosphere produces very limited magma volumes in the axial zone and portions of hot, fertile mantle continue their eastward migration and are stored at shallower depths under the 100-km thick Arabian lithosphere, which is much thinner than the African one (≈175 km). Erupted basalts sampled a continuous variation of the mantle source, with a striking correlation among potential temperature, pressure and isotopic composition shifting between two end members: a 140 km-deep, more depleted source, and a 100 km-deep, more enriched one. In particular, we observed an unusual variation in boron isotopes, which in theory should not vary between more depleted and more enriched domains. This study shows that subcontinental mantle is more heterogeneous than the suboceanic one, and able to record for very long times recycling of shallow material.

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Quaternary post-collisional high Nb-like basalts from Bijar-Qorveh, NW Iran: A metasomatized lithospheric mantle source

Akbari

Ghorbani

Cousens

et al. 2022

Lithos

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Petrogenesis of plio-quaternary intra-plate continental alkaline lavas from the İskenderun Gulf (Southern Turkey): Evidence for metasomatized lithospheric mantle

Cited by 4 publications

References 100 publications

Geochemical and isotopic (Sr-Nd-Pb) signature of crustal contamination in Na-alkali basaltic magmas of South-East Turkey

Geochemical and isotopic (Sr-Nd-Pb) signature of crustal contamination in Na-alkali basaltic magmas of South-East Turkey

A heterogeneous subcontinental mantle under the African-Arabian plate boundary revealed by boron and radiogenic isotopes

Quaternary post-collisional high Nb-like basalts from Bijar-Qorveh, NW Iran: A metasomatized lithospheric mantle source

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