 | Cooperdock, Emily H.G., Raia, Natalie H., Barnes, Jaime D., Stockli, Daniel F., Schwarzenbach, Esther M. (2018) Tectonic origin of serpentinites on Syros, Greece: Geochemical signatures of abyssal origin preserved in a HP/LT subduction complex. Lithos, 296. 352-364 doi:10.1016/j.lithos.2017.10.020 | Journal (article/letter/editorial) | | com/locate/lithos Tectonic origin of serpentinites on Syros, Greece: Geochemical signatures of abyssal origin preserved...October 2017 Available online xxxx Keywords: Serpentinite Syros Cycladic Blueschist unit Trace element Stable...blocks from the exhumed HP/LT Aegean subduction complex on Syros, Greece. Samples are completely serpentinized...and magnetite. δD and δ18O values of bulk rock serpentinite powders and chips (δD = −64 to −33‰ and δ18O...been previously speculated for ultramafic rocks on Syros. Rather, the data are consistent with derivation |  | | Journal (article/letter/editorial) | | exhumation in blueschist-facies rocks from Syros (Cyclades; Greece). Lawsonite is a hydrous mineral that crystallizes...top-to-the-south sense of shear preserved in lawsonite pseudomorphbearing blueschists on Syros occurred...and exhumation are not synchronous. Key words: Aegean; exhumation; lawsonite blueschists; slab rollback;...Jolivet & Goffe, 2000; Mehl et al., 2005). In the Aegean region, several models have been proposed to explain...followed by lawsonite blueschists from Syros Island (Cyclades, Greece), in order to monitor the deformation |  | | Report (chapter) | | extending orogens: the exhumation of HP rocks on Syros (Cyclades) revisited C L A R E E. B O N D 1'2, R...high-pressure blueschist terrane (Ermoupolis Unit) of Syros shows abundant evidence of subhorizontal extension...that blueschists of the Attic-Cycladic belt in the Aegean had been exhumed in the footwall to major low-angle...has since seen widespread use, not only in the Aegean but also in other parts of the Mediterranean (e...high-pressure terrane. The study area is the island of Syros, in the heart of the Attic-Cyclades blueschist |  | | Journal (article/letter/editorial) | | high-pressure metagabbros and metabasalts (Cyclades, Greece): implications for the subduction of oceanic crust...and metabasalts from the Cycladic archipelago (Greece) document the scale and timing of ¯uid±rock interaction...mantle and subduction-related magmatic systems (e.g. island arcs). Although pristine igneous oceanic crust...the high-pressure metamorphic rocks of Catalina Island in 115 California (USA) provide evidence for...rocks of the Alps and the Cycladic Archipelago of Greece suggest that limited ¯uid ¯ow occurred during eclogitefacies |  | Jolivet, Laurent, Lecomte, Emmanuel, Huet, Benjamin, Denèle, Yoann, Lacombe, Olivier, Labrousse, Loïc, Le Pourhiet, Laetitia, Mehl, Caroline (2010) The North Cycladic Detachment System. Earth and Planetary Science Letters, 289 (1) 87-104 doi:10.1016/j.epsl.2009.10.032 | Journal (article/letter/editorial) | | 23 October 2009 Editor: T.M. Harrison Keywords: Aegean Sea Cyclades detachment backarc extension brittle–ductile...activity in the Oligocene concommitantly with the Aegean extension, and was still active in the Late Miocene...exhumation of high-temperature metamorphic domes. The Aegean example shows that reactivation of earlier shallowdipping...classically explained by slab retreat. In the case of the Aegean, post-orogenic extension, gravitational collapse...2006).The Aegean is a keyregion to address this question. Post-orogenic extension in the Aegean Sea started |  | | Journal (article/letter/editorial) | | Schist, Santa Catalina Island, CA, and Attic-Cycladic Complex, Syros, Greece) in order to investigate...derived from mafic blocks. In a traverse across a Syros mafic eclogite block with a narrow chlorite schist...falls between the eclogite core and adjacent serpentinite. These compositions show a relatively minor...exchange between eclogite block and serpentinite. A second sample set from Syros was chosen across a contact...contact zone between a meta-tuffite and a serpentinite because previous studies suggest it was not affected |  | | Journal (article/letter/editorial) | | petrology of blueschist-facies hybrid rocks from Syros (Greece): Implications for reactions at the slab–mantle...Available online 8 August 2008 Keywords: Cyclades Aegean Metasomatism Blackwall Subduction zone High-pressure...mélange zone of that type is found in northern Syros, where metasomatic reaction zones (“blackwalls”)...the contact of metasedimentary blueschists and serpentinite. Five different zones within such a contact...mantle. Metasomatic zones between juxtaposed serpentinite and a variety of crustal rock types have been |  | | Journal (article/letter/editorial) | | mica ages from the Cycladic Blueschist Belt, Syros (Greece). R. A. CLIFF1, C. E. BOND2, R. W. H. BUTLER...metabasites from the Cycladic Blueschist Belt on Syros. The majority are from samples that have well-preserved...tectono-metamorphic systems. North of the Serpentinite Belt in northern Syros, phengite Rb–Sr ages are generally...comparable to previous dates from this area. South of the Serpentinite Belt phengite in blueschist facies assemblages...words; blueschist, exhumation, phengite, Rb–Sr ages, Syros INTRODUCTION Considerable progress has been made |  | | Journal (article/letter/editorial) | | high-pressure/ low-temperature mélange of Syros, Greece: age diversity and the importance of pre-Eocene...ABSTRACT The Cycladic blueschist belt in the central Aegean Sea has experienced high-pressure (HP) metamorphism...the block–matrix association exposed on the island of Syros. Two gneisses from a tectonic slab of this...single Tertiary HP event. Key words: Cyclades; Greece; jadeitite; metasomatism; zircon geochronology...Attic-Cycladic crystalline belt (ACCB) in the central Aegean region (Fig. 1) represents a polymetamorphic terrane |  | | Journal (article/letter/editorial) | | 40Ar/39Ar and Rb–Sr white mica ages from Syros and Sifnos, Greece: a record of continuous (re)crystallization...Attic-Cycladic crystalline belt in the central Aegean region records a complex structural and metamorphic...greenschist facies samples from the islands of Syros and Sifnos. White mica geochronology indicates a...Rb–Sr ages suggest maximum ages of 20.6 0.8 Ma (Syros) and 22.5 0.6 Ma (Sifnos) for the timing of greenschist...evolution of the Aegean. Key words: 40 Ar/39Ar; greenschist facies overprint; Rb–Sr; Sifnos; Syros. INTRODUCTION |  | Bulle, Florian, Bröcker, Michael, Gärtner, Claudia, Keasling, Alan (2010) Geochemistry and geochronology of HP mélanges from Tinos and Andros, cycladic blueschist belt, Greece. Lithos, 117 (1) 61-81 doi:10.1016/j.lithos.2010.02.004 | Journal (article/letter/editorial) | | from Tinos and Andros, cycladic blueschist belt, Greece Florian Bulle ⁎, Michael Bröcker, Claudia Gärtner...mélanges exposed on the Cycladic islands of Tinos, Syros and Andros. Ion microprobe (SHRIMP) U–Pb zircon...chlorite–talc schists from block-matrix contacts (Syros and Tinos) yielded Cretaceous ages of c. 80 Ma....that the block-matrix associations on Tinos and Syros can be grouped together. On a broader regional scale...for the Cretaceous meta-gabbros from Tinos and Syros, but cannot be documented with certainty. © 2010 |  | Lagos, Markus, Scherer, Erik E., Tomaschek, Frank, Münker, Carsten, Keiter, Mark, Berndt, Jasper, Ballhaus, Chris (2007) High precision Lu–Hf geochronology of Eocene eclogite-facies rocks from Syros, Cyclades, Greece. Chemical Geology, 243 (1) 16-35 doi:10.1016/j.chemgeo.2007.04.008 | Journal (article/letter/editorial) | | geochronology of Eocene eclogite-facies rocks from Syros, Cyclades, Greece Markus Lagos a,b,⁎, Erik E. Scherer a ...investigated by Lu–Hf geochronology. Eclogites from Syros Island yield precise ages of 52.2 ± 0.3 Ma, 51.4 ±...maximum reported white mica Rb–Sr and Ar–Ar ages from Syros. Garnet growth in all samples apparently took place...2007 Elsevier B.V. All rights reserved. Keywords: Syros; Cyclades; HP/LT metamorphism; Eclogite; Lu–Hf geochronology;...extends from the Olympos Window (mainland Greece) through the Aegean Sea to the Turkish coast (Blake et al |  | | Journal (article/letter/editorial) | | high-pressure metamorphic rocks: a case study from Syros (Greece) Horst R. Marschall · Rainer Altherr · Katalin...and their metasomatised rinds from the island of Syros (Greece) were analysed for their B and Cl whole-rock...samples demonstrate an enrichment of Li in the Syros HP mélange during fluid infiltration. This study...rocks from two different groups from the island of Syros (Greece). The first group comprises HPM rocks that...Geological background and investigated samples The island of Syros displays a sequence of rocks belonging to the |  | | Journal (article/letter/editorial) | | compositions in eclogite-facies rocks from Syros and Tinos žCyclades, Greece/ : implications for U–Pb zircon geochronology...Low-temperature eclogite-facies rocks from Syros and Tinos ŽCyclades, Greece. include meta-ophiolitic blocks of.... These blocks occur in a matrix of altered serpentinite andror unclear origin Žmeta-olistostrome or...reserved. Keywords: Eclogites; Jadeitites; Syros; Tinos; Cyclades; Greece; Metasomatism; Trace-element enrichment;...High-pressure melange sequences on the islands ´ of Syros and Tinos ŽCycladic blueschist belt; Fig. 1. comprise |  | | Journal (article/letter/editorial) | | 2634 U–Pb dating of detrital zircons from Andros, Greece: constraints for the time of sediment accumulation...Attic–Cycladic Crystalline Belt in the central Aegean region represents a major tectono-stratigraphic...siliciclastic metasedimentary rocks from Andros Island, northern Cyclades. The sampling strategy aimed...160–140 Ma for rock sequences below a prominent serpentinite belt that is interpreted to outline a major...Cycladic blueschist unit; Greece 1. INTRODUCTION The islands of the central Aegean Sea (Fig. 1a, b) can be |  | Pogge von Strandmann, P. A. E., Dohmen, R., Marschall, H. R., Schumacher, J. C., Elliott, T. (2015) Extreme Magnesium Isotope Fractionation at Outcrop Scale Records the Mechanism and Rate at which Reaction Fronts Advance. Journal of Petrology, 56 (1) 33-58 doi:10.1093/petrology/egu070 | Journal (article/letter/editorial) | | between rocks of subducted crust and serpentinite in the Syros mélange zone. This isotopic perturbation... 34 FIELD AREA AND SAMPLE PETROGRAPHY The island of Syros displays a sequence of rocks of the lower unit...Complex (Dürr et al., 1978). The major part of the island is composed of interlayered pelitic schists and...Keiter et al., 2011). The northeastern part of the island comprises a mélange zone composed of metagabbros...P–T conditions reported for the formation of the Syros blackwalls by Breeding et al. (2004) (117–123 |  | | Journal (article/letter/editorial) | | 1915–1942 2006 doi:10.1093/petrology/egl031 Syros Metasomatic Tourmaline: Evidence for Very High-d...to ultramafic matrix from a mélange on the island of Syros are rimmed by tourmaline-bearing reaction zones...the subducting slab. Blackwall tourmaline from Syros has a large grain size (several centimetres), high...reaction zones in HP metamorphic rocks from the island of Syros are presented in this paper. Implications for...for the extremely heavy B isotopic composition of Syros tourmaline, will be discussed. ANALYTICAL METHODS |  | | Journal (article/letter/editorial) | | isotope studies of metagabbros on the island of Tinos (Cyclades, Greece). Sequentially formed mineral generations...hydrogen isotope studies of the metagabbros of the island of Tinos (Fig. 1). Previous studies of the ¢eld...metamorphic gabbros and basalts of the islands of Syros, Sifnos and Tinos [11], which showed that the high-pressure... 101 Fig. 1. Geological map of Tinos island (Cyclades, Greece) showing the ophiolite exposures (UTU)...and calcareous metasedimentary or ultrabasic (serpentinite) country rocks at the Kalloni, Kionia and Marlas |  | | Journal (article/letter/editorial) | | 1093/petrology/egn042 Glaucophane-bearing Marbles on Syros, Greece JOHN C. SCHUMACHER1*, JOHN B. BRADY2, JOHN T...The occurrence of glaucophane-bearing marbles on Syros is noteworthy because reports of marbles that contain...among descriptions of high-pressure marbles. On Syros, the marbles are composed primarily of calcite with...medium pressure. In the metamorphic rocks of Syros, Greece (Fig. 1), amphibole is present in the marbles...aware. Here, we give an overview of the geology of Syros and the timing and conditions of metamorphism, and |  | | Journal (article/letter/editorial) | | metamorphism at the Almyropotamos window (southern Evia, Greece) YONATHAN SHAKED*, DOV AVIGAD & ZVI GARFUNKEL Institute...Extensional structures have affected the central Aegean region and obliterated much of the original orogenic...Almyropotamos (on the island of Evia, flanking the western part of the Aegean) a unique remnant compressional...unit on top of a lower grade unit. The upper unit (South Evia Blueschist Belt) is thought to be the westward...mol. %) suggest that peak P–T conditions in the South Evia Blueschist Belt reached approximately 10–12 |  | | Journal (article/letter/editorial) | | 901–920 Exhumation of Syros and Sifnos metamorphic rocks (Cyclades, Greece). New constraints on the...levels are recognised in the metamorphic pile of Syros and Sifnos. Well-preserved eclogites and blueschists...cooling. Key-words: exhumation, Cyclades, Sifnos, Syros, multi-equilibrium thermobarometry, P-T paths. ...a back-arc environment. In many islands of the Aegean domain, well-preserved high-pressure rocks occur...b). However, it is noteworthy that on Sifnos and Syros, the eclogites and blueschists generally occur at |  | | Journal (article/letter/editorial) | | tourmaline in highpressure metasediments from Syros (Greece): intra-grain boron isotope patterns determined...zoned tourmaline in two metasediments from the island of Syros, determined by secondary-ion mass spectrometry...The d11B values of metamorphic tourmaline from Syros, formed in mixed terrigenous–marine sediments, reflect...Simplified geological map of the northern part of Syros (after Keiter et al. 2004). SY314 was sampled from... The inset shows a map of Greece with the location of the island of Syros the B isotopic evolution of |  | Martha, Silviu O., Dörr, Wolfgang, Gerdes, Axel, Krahl, Jochen, Linckens, Jolien, Zulauf, Gernold (2017) The tectonometamorphic and magmatic evolution of the Uppermost Unit in central Crete (Melambes area): constraints on a Late Cretaceous magmatic arc in the Internal Hellenides (Greece) Gondwana Research, 48. 50-71 doi:10.1016/j.gr.2017.04.004 | Journal (article/letter/editorial) | | Cretaceous magmatic arc in the Internal Hellenides (Greece) Silviu O. Martha, Wolfgang Dörr, Axel Gerdes...Cretaceous magmatic arc in the Internal Hellenides (Greece). The address for the corresponding author was...Cretaceous magmatic arc in the Internal Hellenides (Greece) Silviu O. Martha1* Wolfgang Dörr1 Axel Gerdes1...metasedimentary rocks, (meta)granitoids CE and serpentinite, the protolith age and the tectonometamorphic...dominant shear sense SC RI PT in the southern Aegean from at least mid-Upper Cretaceous until the Eocene |  | Flores, Kennet E., Martens, Uwe C., Harlow, George E., Brueckner, Hannes K., Pearson, Norman J. (2013) Jadeitite formed during subduction: In situ zircon geochronology constraints from two different tectonic events within the Guatemala Suture Zone. Earth and Planetary Science Letters, 371. 67-81 doi:10.1016/j.epsl.2013.04.015 | Journal (article/letter/editorial) | | high-pressure–low-temperature blocks within serpentinite matrix mélanges. Models of formation involve...Motagua Mélange and one phengite jadeitite from the South Motagua Mélange of the GSZ were studied for age...complex in the Polar Urals (Russia) and the serpentinite mélanges of the Río San Juan complex (Dominican...Keywords: Guatemala jadeitite zircon U–Pb dating serpentinite mélange fluid precipitation high pressure–lower...blueschist, garnetamphibolite and eclogite, within serpentinite-matrix mélange. Recent studies indicate that |  | Shu, Yunchao, Nielsen, Sune G., Marschall, Horst R., John, Timm, Blusztajn, Jerzy, Auro, Maureen (2019) Closing the loop: Subducted eclogites match thallium isotope compositions of ocean island basalts. Geochimica et Cosmochimica Acta, 250. 130-148 doi:10.1016/j.gca.2019.02.004 | Journal (article/letter/editorial) | | eclogites match thallium isotope compositions of ocean island basalts Yunchao Shu, Sune G. Nielsen, Horst R....eclogites match thallium isotope compositions of ocean island basalts, Geochimica et Cosmochimica Acta (2019)...eclogites match thallium isotope compositions of ocean island basalts Yunchao Shu1,2,3, Sune G. Nielsen*1,2... Abstract Thallium (Tl) isotope compositions of ocean island basalts (OIBs) have been proposed as a novel tracer...subducted oceanic crust and sediments in ocean island basalt sources, which could act as direct confirmation |
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