TY  - JOUR
A1  - Candan, O.
A1  - Akal, C.
A1  - Koralay, O. E.
A1  - Okay, A. I.
A1  - Oberhänsli, Roland
A1  - Prelevic, D.
A1  - Mertz-Kraus, R.
T1  - Carboniferous granites on the northern margin of Gondwana, Anatolide-Tauride Block, Turkey - Evidence for southward subduction of Paleotethys
JF  - Tectonophysics : international journal of geotectonics and the geology and physics of the interior of the earth
N2  - Carboniferous metagranites with U-Pb zircon crystallization ages of 331-315 Ma crop out in the Afyon zone in the northern margin of the Anatolide-Tauride Block, which is commonly regarded as part of Gondwana during the Late Palaeozoic. They are peraluminous, calc-alkaline and are characterized by increase in Rb and Ba, decrease in Nb-Ta, and enrichment in Sr and high LILE/HFSE ratios compatible with a continental arc setting. The metagranites intrude a metasedimentary sequence of phyllite, metaquartzite and marble; both the Carboniferous metagranites and metasedimentary rocks are overlain unconformably by Lower Triassic metaconglomerates, metavolcanics and Upper Triassic to Cretaceous recrystallized limestones. The low-grade metamorphism and deformation occurred at the Cretaceous-Tertiary boundary. There is no evidence for Carboniferous deformation and metamorphism in the region. Carboniferous arc-type granites and previously described Carboniferous subduction-accretion complexes on the northern margin of the Anatolide-Tauride Block suggest southward subduction of Paleotethys under Gondwana during the Carboniferous. Considering the Variscan-related arc granites in Pelagonian and Sakarya zones on the active southern margin of Laurasia, a dual subduction of Paleotethys can be envisaged between Early Carboniferous and Late Permian. However, the southward subduction was short-lived and by the Late Permian the Gondwana margin became passive. (C) 2016 Elsevier B.V. All rights reserved.
KW  - Carboniferous magmatism
KW  - Paleotethys
KW  - Gondwana
KW  - Afyon zone
KW  - Anatolide-Tauride Block
Y1  - 2016
U6  - https://doi.org/10.1016/j.tecto.2016.06.030
SN  - 0040-1951
SN  - 1879-3266
VL  - 683
SP  - 349
EP  - 366
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Candan, O.
A1  - Koralay, O. E.
A1  - Topuz, G.
A1  - Oberhänsli, Roland
A1  - Fritz, H.
A1  - Collins, A. S.
A1  - Chen, F.
T1  - Late Neoproterozoic gabbro emplacement followed by early Cambrian eclogite-facies metamorphism in the Menderes Massif (W. Turkey): Implications on the final assembly of Gondwana
JF  - Gondwana research : international geoscience journal ; official journal of the International Association for Gondwana Research
N2  - Numerous (meta-)gabbroic dikes or stocks occur within the latest Neoproterozoic-early Cambrian series of the Menderes Massif (Anatolide-Tauride Block, western Turkey). These well-preserved rocks were locally converted into eclogitic metagabbros and garnet amphibolites along the contacts or shear zones. Both bulk-rock composition and compositions of igneous clinopyroxenes suggest continental tholeiitic affinity. U-Pb dating of igneous zircons from gabbroic rocks yielded a mean age of 563 +/- 1 Ma (2 sigma), indicating emplacement during the latest Neoproterozoic (Ediacaran). On the other hand, rims of zircons from eclogitic metagabbro gave 535 +/- 3 Ma (2 sigma) (early Cambrian), in addition to 558 +/- 3 Ma (2 sigma) obtained from the igneous core of zircons. These ages are interpreted as the time of high-P metamorphism and crystallization age of gabbroic protolith, respectively. Given the estimated paleogeographic position of the Anatolide-Tauride Block during the late Neoproterozoic and early Cambrian, this orogenic event can be spatially and temporally related to the northward continuity of 600-500 Ma orogenic event (Malagasy/Kuunga orogeny) extending from western margin of India, Madagascar, via Arabia up to northern margin of Gondwana beneath thick Phanerozoic cover series in Arabian Peninsula. Therefore, the high-P evolution of the basement of the Menderes Massif and associated basic intrusions can be interpreted to mark the latest stages of consumption of the basin/oceanic branches and final amalgamation of the Gondwana during the late Neoproterozoic-early Cambrian around the Arabian region. (C) 2015 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
KW  - Gabbro
KW  - Eclogite
KW  - Malagasy/Kuunga orogeny
KW  - Menderes Massif
KW  - Turkey
Y1  - 2016
U6  - https://doi.org/10.1016/j.gr.2015.02.015
SN  - 1342-937X
SN  - 1878-0571
VL  - 34
SP  - 158
EP  - 173
PB  - Elsevier
CY  - Amsterdam
ER  -