 | 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...2017 Available online xxxx Keywords: Serpentinite Syros Cycladic Blueschist unit Trace element Stable isotope...blocks from the exhumed HP/LT Aegean subduction complex on Syros, Greece. Samples are completely serpentinized...that consist of variable amounts of serpentine, talc, chlorite, and magnetite. δD and δ18O values of...been previously speculated for ultramafic rocks on Syros. Rather, the data are consistent with derivation |  | 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...blackwall zone (Tinos) and chlorite–talc schists from block-matrix contacts (Syros and Tinos) yielded Cretaceous...found. Zircon of the same age occurring in chlorite–talc schists is presumably related to non-magmatic processes...that the block-matrix associations on Tinos and Syros can be grouped together. On a broader regional scale |  | | 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”)...largely ignored in traditional models of mantle and island-arc geochemistry. However, metasomatic rocks associated...glaucophane schist within the mélange zone of Syros (Cyclades, Greece). A model of the chemical potential gradients |  | | 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 |  | 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) | | 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) | | 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...block and serpentinite. A second sample set from Syros was chosen across a contact zone between a meta-tuffite...mobility of the HSE. All HSE were mobilized in the Syros mélange zone through fluid advection beyond the...of hydrous minerals such as amphiboles, phengite, talc, and/or chlorite. These features likely formed due |  | | Journal (article/letter/editorial) | | retrogression in blueschist metapelites of Tinos Island (Greece) evidenced by chlorite–mica local equilibria...deformation of the Cycladic Blueschists unit on Tinos Island evolves along a NE – SW gradient of noncoaxial...from the upper ophiolitic unit in the NE of the island. The compositional variability of chlorite and...a warmer P – T path during the formation of the Aegean sea. Between the two stages of exhumation, there...Science B.V. All rights reserved. Keywords: Tinos Island; HP/LT metapelites; P – T path; Chlorites; Phengites; |  | | 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 |  | 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) | | rocks of subducted crust and serpentinite in the Syros mélange zone. This isotopic perturbation extends... 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 |  | Marschall, Horst R., Altherr, Rainer, Ludwig, Thomas, Kalt, Angelika, Gméling, Katalin, Kasztovszky, Zsolt (2006) Partitioning and budget of Li, Be and B in high-pressure metamorphic rocks. Geochimica et Cosmochimica Acta, 70 (18) 4750-4769 doi:10.1016/j.gca.2006.07.006 | Journal (article/letter/editorial) | | high-pressure metamorphic rocks from the island of Syros (Greece) were studied, using secondary ion mass...mantle wedge, and on the magmas generated there. Island arc volcanic rocks consequently display strong...high-pressure metamorphic rocks from the Greek island of Syros (Cyclades) are reported. The major hosts of...Geology 4.1. Metagabbros (SY344, SY438) The island of Syros displays a sequence of rocks of the lower unit...crystalline complex (ACCC). The major part of the island is composed of interlayered pelitic schists and |  | | 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)...many similarities to their LTU counterparts on Syros. Relict hydrothermal amphiboles are preserved and |  | | 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) | | Accepted Manuscript Cenozoic metallogeny of Greece and potential for precious, critical and rare metals... Melfos, P. Voudouris, Cenozoic metallogeny of Greece and potential for precious, critical and rare metals...the journal pertain. Cenozoic metallogeny of Greece and potential for precious, critical and rare metals...University of Thessaloniki, Thessaloniki 54124, Greece Panagiotis Voudouris Department of Mineralogy-Petrology...Kapodistrian University of Athens, Athens 15784, Greece corresponding authors: melfosv@geo.auth.gr, voudouris@geol |  | 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) | | Motagua Mélange and one phengite jadeitite from the South Motagua Mélange of the GSZ were studied for age...rinds in serpentinite (e.g., Quebrada El Silencio, South Motagua Mélange, Guatemala), or (c) inside blueschist...left-lateral, strikeslip fault systems, from north to south (a) the Polochic (Polochic– Chixoy; PFS), (b) the...the distinctly different crustal blocks north and south of the MFS (e.g., Brueckner et al., 2009; Chiari...the tectonic origin of the HP–LT rocks north and south of the MFS was assigned to a single tectonic (collisional) |  | | Journal (article/letter/editorial) | | depths: 1) within tectonic accretion zones (Cyclades, Greece), 2) during the dehydration of upper oceanic crust...examples are from coherent sequences. 3.1. Cyclades (Greece) — reactive fluid flow in accretion and mélange...through a fracture network to their new host. On Syros, Breeding et al. (2004) and Marschall et al. (2006)...found that fluid flow within the mélange zones on Syros can cause extreme δ11B fractionation (up to + 28...resemble depleted to enriched mid-ocean ridge, ocean island and arc basalts (Gao and Klemd, 2003; John et al |  | Pabst, Sonja, Zack, Thomas, Savov, Ivan P., Ludwig, Thomas, Rost, Detlef, Tonarini, Sonia, Vicenzi, Edward P. (2012) The fate of subducted oceanic slabs in the shallow mantle: Insights from boron isotopes and light element composition of metasomatized blueschists from the Mariana forearc. Lithos, 132. 162-179 doi:10.1016/j.lithos.2011.11.010 | Journal (article/letter/editorial) | | isotopes Mélange a b s t r a c t Serpentine muds from South Chamorro Seamount (SCS), drilled during ODP Leg...as those from the Catalina Island in California and Syros Island in Greece (e.g., Bebout, 1995; Bebout...forearc-situated seamounts such as Big Blue, Conical and South Chamorro seamounts (Fryer et al., 2006), emplaces...of such metamafic clasts are recovered from the South Chamorro Seamount, with Conical, Pacman and Big...seamounts relevant for this study are Conical and South Chamorro Seamount (modified after Snyder et al., |  | | Journal (article/letter/editorial) | | eventually be carried to the surface by oceanic island basalts. Bouilhol et al. present the field-based...garnets consist of amphibole, chlorite, phlogopite, talc, pyrite and spinel. This suggests that a silicate-rich...describe the blueschist-facies melange from the Syros Island (Greece), where sedimentary, mafic and ultramafic...Mediterranean (Tuscany, Corsica, Western Alps and South-Eastern Spain), which represent different magmatic...invariably associated with lamproites, either preceded (South Eastern Spain) or followed them (Tuscany and Corsica) |  | | Journal (article/letter/editorial) | | Ca-Na-clinopyroxenes Sillimanite Andalusite Kyanite Mg-carpholite Talc Quartz Coesite Water non-ideal molecular mixing...(FkPQ), pyrope + kyanite + quartz/coesite (PyKQ/C), talc + kyanite + quartz/coesite (TaKQ/C), or almandine...(AKQ/C), respectively. The experiments involving talc were not included in the input data set because...Turkey 1: HP–LT Chlorite–KWM–chloritoid–quartz (±talc, ±garnet) Chlorite–KWM±garnet± glaucophane±albite±paragonite...schists Sambagawa Belt (Shikuko Island, Japan) Tinos Island (Greece) Meliata unit (West Carpathians, |  | | Journal (article/letter/editorial) | | of the oceanic crust (e.g. amphibole, chlorite, talc etc.). Thompson [12] has recently reviewed the situation...with the fluid inclusion results of [16] from Syros Island. Fluid salinity values shown in Fig. 3 (4 wt%...[16] to suggest that the blueschist rocks from Syros evolved in a closed system with little ability to...alone as in the case of Monviso, Rocciavrè and Syros=Sifnos rocks, or devolatilization and extensive...and grenschist facies rocks of sifnos, Cyclades Greece: a stable isotope study of subduction-related metamorphism |  | Li, Ji-Lei, Klemd, Reiner, Huang, Gao-Feng, Ague, Jay J., Gao, Jun (2021) Unravelling slab δ34S compositions from in-situ sulphide δ34S studies of high-pressure metamorphic rocks. International Geology Review, 63 (1). 109-129 doi:10.1080/00206814.2020.1827305 | Journal (article/letter/editorial) | | al. 2020). In addition, investigations of ocean island basalts (OIBs) revealed negative Δ33S (e.g. Cabral...exhumed ultramafic and metabasic rocks from Syros (Greece). The positive δ34S values were interpreted...2019); [11] this study SW Tianshan (5–7 °C/km) Syros (7–11 °C/km) Armorican Massif (10–12 °C/km) Tauern...isotope compositions Lago di Cignana (5–7 °C/km) Syros (7–11 °C/km) Cerro del Almirez (10–12 °C/km) SW... 2018). In addition, hybrid chlorite schist and talc schist that are closely associated with serpentinites |  | | Book | | National and Kapodistrian University of Athens Greece Stefanos Karampelas Vasilios Melfos Bahrain...(DANAT) Thessaloniki Bahrain Greece Ian Graham The University of New South Wales Australia Editorial...Rocks within Meta-Ultramafites of Ilmen Mountains, South Urals of Russia: Evidence from Mineralogy, Geochemistry...Hofmeister Corundum Anorthosites-Kyshtymites from the South Urals, Russia: A Combined Mineralogical, Geochemical...and Andreas Lampridis Gem Corundum Deposits of Greece: Geology, Mineralogy and Genesis Reprinted from: |  | | Journal (article/letter/editorial) | | University of Cape Town, Rondebosch, 7700 Republic of South Africa # 2002 The Mineralogical Society and hence...Mg-staurolite Phengite Paragonite Zoisite/clinozoisite Talc Topaz-OH Ellenbergerite Formula ~wt.% H2O CaAl2Si2O7(OH)2...lithologies at high temperatures include: Phengite + Talc + Garnet = Kyanite + Biotite + H2O in KFMASH (1)...inclusions in some Alpine high-P assemblages (e.g. Syros Island, Cyclades; Barr, 1990; the earliest inclusions...Getty and Selverstone, 1994; the Rhopode Massif, Greece: Matthews et al., 1996). Such heterogeneous profiles |  | | Journal (article/letter/editorial) | | world-wide in high-pressure metamorphic belts (Syros, Ridley, 1984; Alanya Nappes, Okay, 1989; Sifnos... 1990; Puerto Cabello, Morgan, 1970; Margarita Island, Maresch & Abraham, 1977, 1981; In the Nevado–Filábride...0·000 0·001 not unique. Similarly, in Margarita Island (Maresch, 1971; Maresch & Abraham, 1981) a continuous...Metamorphic conditions for mafic assemblages in Margarita Island range from 450 to 525°C, at pressures from 11·5...the Nevado–Filábride Complex and in Margarita Island are similar (Fig. 6b and c), and a KdFe/Mg Amph/Cpx |  | | Journal (article/letter/editorial) | | unstable at >150 ◦ C, other mineral phases such as talc, which is stable throughout the seismogenic zone...subduction thrust exposed at Pasagshak Point, Kodiak Island, which features evidence for seismic deformation...exhumed subduction complex in outcrops on Syros Island, Greece, which they argue to be a representative...minerals, including some clays, serpentine minerals and talc, are found to be velocity strengthening in the laboratory...in the heterogeneous Zuccale fault zone on Elba Island, Italy (based on Collettini et al., 2011; original |
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