 | | Journal (article/letter/editorial) | | using 40 Ar/39Ar phengite ages in blueschist‑ and eclogite‑facies rocks (Sivrihisar, Turkey) Katherine F...present new in situ UV laser ablation 40Ar/39Ar phengite ages from a suite of lawsonite blueschist- and...zone (Sivrihisar Massif, Tavşanlı Zone, Turkey). Weighted mean in situ 40Ar/39Ar ages of phengite from...eclogite pods (90–93 Ma) are distinctly older than phengite from retrogressed, epidote eclogite (82 ± 2 Ma)...assemblages and glaucophane-rimmed lawsonite + garnet + phengite veins from eclogite pod margins record a much |  | | Journal (article/letter/editorial) | | petrology of high-pressure metabasalt pods, Sivrihisar, Turkey Peter B. Davis Æ Donna L. Whitney Received:...metasedimentary and metabasaltic rocks in the Sivrihisar Massif, Turkey. Some pods have a core of lawsonite eclogite...Blueschist Eclogite High-pressure Sivrihisar Turkey Introduction Eclogites commonly occur as...well-exposed high-P terrane in the Sivrihisar Massif of west-central Turkey, the pressure– temperature-deformation...pod cores versus margins. Previous work on the Sivrihisar high-P rocks proposed that lawsonite eclogite |  | | Journal (article/letter/editorial) | | element mobility in subducted crust (Sivrihisar Massif, Turkey) Katherine F. Fornash, Donna L. Whitney...element mobility in subducted crust (Sivrihisar Massif, Turkey), Chemical Geology (2019), doi: https://doi...element mobility in subducted crust (Sivrihisar Massif, Turkey) Katherine F. Fornash1,2*, Donna L. Whitney2...subduction and/or incipient exhumation. In the Sivrihisar (Turkey) subduction complex, lawsonite-rich veins...which occur interspersed with mafic rocks in the Sivrihisar complex. Fluid-rock interaction may have also |  | WHITNEY, D. L., TEYSSIER, C., TORAMAN, E., SEATON, N. C. A., FAYON, A. K. (2011) Metamorphic and tectonic evolution of a structurally continuous blueschist-to-Barrovian terrane, Sivrihisar Massif, Turkey. Journal of Metamorphic Geology, 29 (2) 193-212 doi:10.1111/j.1525-1314.2010.00915.x | Journal (article/letter/editorial) | | continuous blueschist-to-Barrovian terrane, Sivrihisar Massif, Turkey D. L. WHITNEY,1 C. TEYSSIER,1 E. TORAMAN...blueschist-to-Barrovian terrane is the southern Sivrihisar Massif, Turkey. Late Cretaceous blueschist facies rocks...Barrovian; blueschist; exhumation; isograds; Sivrihisar; subduction; Turkey. INTRODUCTION The pre-collision oceanic... 1d). The southern part of the Sivrihisar Massif, westcentral Turkey (Fig. 2), is a spectacular example...subduction to collision transition dynamics. The massif is comprised of a sequence of metasedimentary and |  | | Journal (article/letter/editorial) | | suite of different rock types from the Sivrihisar Massif, Turkey, one of the few places in the world where...inherited from the protolith. Lawsonite from Sivrihisar metamafic rocks has high Sr/Pb, whereas lawsonite...systems via hydrous phases such as lawsonite, phengite, amphibole, epidote-group minerals, talc, chlorite...eclogite- and blueschist-facies rocks is the Sivrihisar Massif of the Tavşanlı © 2019 The Authors GEOSPHERE...Plateau xenolith Dominican Republic Corsica Sivrihisar Central Pontides Kyrgyzstan Tianshan North Qilian |  | | Journal (article/letter/editorial) | | evolution of the subduction zone. In the Sivrihisar Massif, lawsonite eclogite and garnet–lawsonite blueschist...Franciscan Complex of California and the Sivrihisar Massif of Turkey. Within both regions, lawsonite is well...32.4000 ). The sample contains sodic amphibole, phengite and sphene with either garnet, garnet+lawsonite...lawsonite clearly overprints the garnetglaucophane-phengite assemblage. Lawsonite veins both crosscut and...The sample contains sodic-amphibole, lawsonite, phengite and sphene (Fig. 2e). Lawsonite porphyroblasts |  | Whitney, Donna L., Fornash, Katherine F., Kang, Patricia, Ghent, Edward D., Martin, Laure, Okay, Aral I., Vitale Brovarone, Alberto (2020) Lawsonite composition and zoning as tracers of subduction processes: A global review. Lithos, 370. 105636pp. doi:10.1016/j.lithos.2020.105636 | Journal (article/letter/editorial) | | Istanbul Technical University, TR-34469, Istanbul, Turkey 6 Institut de Minéralogie, de Physique des Matériaux...Istanbul Technical University, TR-34469, Istanbul, Turkey re 6 lP Institut de Minéralogie, de Physique...lawsonite, epidote-group minerals, talc, chlorite, phengite, and carbonate minerals. The locations and extent...have lawsonite inclusions in garnet (e.g., Sivrihisar, Turkey; Pinchi Lake, BC, Canada; Port Macquarie... These locations are: (1) the Sivrihisar Massif, Tavşanlı Zone, Turkey (C) (Fig. 6a, 7a-d); (2) the Schistes |  | | Journal (article/letter/editorial) | | high-pressure (P)/low-temperature (T) complex (Sivrihisar, Turkey) preserve different prograde, peak, and retrograde...This study is the first petrologic analysis of Sivrihisar metagabbro and the first systematic study of...Eclogite · Metabasalt · Metagabbro · Subduction · Turkey Introduction Basalt and gabbro represent different...textures. In this paper, we focus on the Sivrihisar Massif (Turkey), in which layers of fine-grained HP/LT...(retrograde) mineral assemblages. Fine-grained Sivrihisar metabasalt has been Fig. 1 a Simplified geologic |  | Choi, Seungsoon, Fabbri, Olivier, Topuz, Gültekin, Okay, Aral I., Jung, Haemyeong (2021) Twin Induced Reduction of Seismic Anisotropy in Lawsonite Blueschist. Minerals, 11 (4) 399 doi:10.3390/min11040399 | Journal (article/letter/editorial) | | İstanbul Teknik Üniversitesi, 34469 İstanbul, Turkey; topuzg@itu.edu.tr (G.T.); okay@itu.edu.tr (A.I...from Alpine Corsica (France) and the Sivrihisar Massif (Turkey). The CPOs of the minerals are measured...existence of twins in lawsonite from the Sivrihisar Massif (Turkey) [10,15,16], South Motagua (Guatemala)...Alpine Corsica (France) and the Sivrihisar Massif in the Tavşanlı Zone (Turkey). The main focus of this study...and eclogite [22,23,28]. The Tavşanlı Zone in Turkey is an Alpine high-pressure belt and was formed |  | Pourteau, A., Sudo, M., Candan, O., Lanari, P., Vidal, O., Oberhänsli, R. (2013) Neotethys closure history of Anatolia: insights from40Ar-39Ar geochronology andP-Testimation in high-pressure metasedimentary rocks. Journal of Metamorphic Geology, 31 (6) 585-606 doi:10.1111/jmg.12034 | Journal (article/letter/editorial) | | l€ um€ u, Tınaztepe Kampusu, Buca–Izmir, 35160, Turkey 3 Isterre, Universit e Joseph Fourier Grenoble...Afyon Zone, the Oren Unit and the southern Menderes Massif) suggest a more complicated scenario than the single-continental...combined with P–T estimates (chlorite thermometry, phengite barometry, multi-equilibrium thermobarometry)...Unit (HP Mesozoic cover of the southern Menderes Massif), HP retrograde stages are dated to c. 45 Ma, and...words: 40Ar–39Ar geochronology; Anatolia; chlorite–phengite thermobarometry; high-pressure metasedimentary |  | Pagé, Lilianne, Hattori, Keiko, de Hoog, Jan C.M., Okay, Aral I. (2016) Halogen (F, Cl, Br, I) behaviour in subducting slabs: A study of lawsonite blueschists in western Turkey. Earth and Planetary Science Letters, 442. 133-142 doi:10.1016/j.epsl.2016.02.054 | Journal (article/letter/editorial) | | slabs: A study of lawsonite blueschists in western Turkey Lilianne Pagé a,∗ , Keiko Hattori a , Jan C.M....Istanbul Technical University, Istanbul 34469, Turkey a r t i c l e i n f o Article history: Received...Keywords: subduction halogens fluorine lawsonite phengite deep mantle a b s t r a c t We examined the F...blueschists from the Tavsanli Zone in northwest Turkey to evaluate the behaviour of halogens in subduction...amphibole and lawsonite, with variable amounts of phengite and chlorite, and minor apatite. A positive correlation |  | | Journal (article/letter/editorial) | | contain glaucophane, garnet, omphacite, lawsonite, phengite and quartz, with chlorite at lower temperature...controlled by pressure. The silica content in phengite increases linearly with pressure. As the P–T conditions...(py02–py35) contents in garnet, silica content in phengite (s3.3–3.9), and of one H2O content (labelled with...contents in garnet, and the silica content in phengite. It shows that in the lawsonite-bearing assemblages...peak conditions. Isopleths of silica content in phengite have slopes intermediate between the P and T axes |  | Özdamar, Şenel, Billor, Mehmet Z., Sunal, Gürsel, Esenli, Fahri, Roden, Michael F. (2013) First U–Pb SHRIMP zircon and 40Ar/39Ar ages of metarhyolites from the Afyon–Bolkardag Zone, SW Turkey: Implications for the rifting and closure of the Neo-Tethys. Gondwana Research, 24 (1) 377-391 doi:10.1016/j.gr.2012.10.006 | Journal (article/letter/editorial) | | metarhyolites from the Afyon–Bolkardag Zone, SW Turkey: Implications for the rifting and closure of the...Department of Geological Engineering, İstanbul, 34469, Turkey Auburn University, College of Sciences and Mathematics...Ar/39Ar ages Neo-Tethys Gondwana margin Tectonics Turkey a b s t r a c t The Afyon–Bolkardag Zone (ABZ)...one of the most important metamorphic zones in Turkey. This zone consists of metasedimentary and metavolcanic...analyses of zircons and 40Ar/39Ar age data of phengite from metarhyolites that enable a more precise |  | | Journal (article/letter/editorial) | | progressive metamorphism near the triple point, Sivrihisar, Turkey DONNA L. WHITNEY* Department of Geology and...metamorphosed, muscovite-bearing quartzites from Sivrihisar, Turkey, contain coexisting andalusite, kyanite,...affected similar rocks to the northwest in the Sivrihisar massif. The stable coexistence of staurolite + sillimanite...occurrence of coexist- is the only part of the Sivrihisar massif in which three Al2SiO5 ing kyanite, andalusite...phases have been found to date. Other parts of the massif to the the andalusite-kyanite and kyanite-sillimanite |  | Chen, Y., Ye, K., Wu, T. F., Guo, S. (2013) Exhumation of oceanic eclogites: thermodynamic constraints on pressure, temperature, bulk composition and density. Journal of Metamorphic Geology, 31 (5) 549-570 doi:10.1111/jmg.12033 | Journal (article/letter/editorial) | | minerals, such as glaucophane, lawsonite, paragonite, phengite, talc and chloritoid. Their mineral assemblages...of garnet + omphacite + lawsonite + coesite + phengite + rutile glaucophane, and their peak metamorphic...garnet + omphacite + lawsonite + glaucophane + phengite + quartz + rutile/titanite. Their peak P–T conditions...Pinchi Lake, British Columbia Sivrihisar Massif, Turkey Central Pontides, Turkey 2.6/500 1.7/400–430 g +...g + o + law* + gl + phe + ru + q 15 Sivrihisar Massif, Turkey 1.8/600 g + o + ep + amp + phe + ru |  | Whitney, Donna L., Teyssier, Christian, Kruckenberg, Seth C., Morgan, Valerie L., Iredale, Lindsay J. (2008) High-pressure–low-temperature metamorphism of metasedimentary rocks, southern Menderes Massif, western Turkey. Lithos, 101 (3) 218-232 doi:10.1016/j.lithos.2007.07.001 | Journal (article/letter/editorial) | | metasedimentary rocks, southern Menderes Massif, western Turkey Donna L. Whitney a,⁎, Christian Teyssier...belt along the southern margin of the Menderes Massif, Turkey, and preserve evidence for high-pressure–low-temperature...quartzite, and quartz veins contain kyanite + phengite + Mg-chlorite, and the veins also contain magnesiocarpholite...unit. If the former, the entire southern Menderes Massif experienced HP–LT metamorphism but the evidence...P–T-deformation histories of the southern Menderes Massif rocks, and suggests that the HP–LT rocks are not |  | | Journal (article/letter/editorial) | | evolution of lawsonite eclogite in Sivrihisar; Tavşanlı Zone–Turkey Mete Çetinkaplan a,⁎, Osman Candan...Jeoloji Mühendisliği Bölümü, 35160 Buca-İzmir, Turkey b Institut für Geowissenschaften, Universitat Potsdam...platform is exposed in Western Anatolia. The Sivrihisar area east of Tavşanlı is made up of tectonic...e and jadeite–glaucophane–chloritoid schists, phengite phyllites, and calcschists with glaucophane–lawsonite...is omphacite, garnet, lawsonite, glaucophane, phengite and rutile. Lawsonite eclogite lenses are enclosed |  | Martin, L. A. J., Hermann, J., Gauthiez-Putallaz, L., Whitney, D. L., Vitale Brovarone, A., Fornash, K. F., Evans, N. J. (2014) Lawsonite geochemistry and stability - implication for trace element and water cycles in subduction zones. Journal of Metamorphic Geology, 32 (5) 455-478 doi:10.1111/jmg.12093 | Journal (article/letter/editorial) | | metasedimentary (quartzite) rocks from New Caledonia, Turkey and California. Lawsonite is a major host of REE...subducted slabs, such as antigorite, amphibole, phengite and epidote-group minerals, lawsonite has attracted...from key localities (New Caledonia, California and Turkey) where lawsonite has been found in subducted sediments...in some © 2014 John Wiley & Sons Ltd Zircon Phengite Fig. 1. (a) Review of lawsonite rare earth element...provided for a quartzite and an eclogite from Sivrihisar, Turkey, a key locality showing 458 L. A. J. MARTIN |  | | Journal (article/letter/editorial) | | sector of the metaophiolitic high-pressure Voltri Massif (Ligurian Western Alps, Italy). The study area...serpentinite channel, Ligurian Western Alps, Voltri Massif 1. Introduction Lawsonite blueschists and eclogites...north-western sector of the metaophiolitic Voltri Massif (Ligurian Western Alps, Italy). The main metagabbro...al. 2016). 2. Geological background The Voltri Massif is located at the southernmost termination of the...1996; Capponi & Crispini, 2002, 2008b). The Voltri Massif metaophiolites largely consist of serpentinites |  | | Journal (article/letter/editorial) | | blueschists in tectonic mélange from the Tavşanlı Zone, Turkey: Potential constraints on the origin of Mediterranean...blueschists from the Tavşanlı zone in northwest Turkey—one of the best-preserved blueschist terranes in...samples contain lawsonite + sodic amphibole + phengite + chlorite + titanite + apatite ± aragonite ±...repository for Sr, Pb, Th, U, and REE, whereas phengite carries the most large-ion lithophile element...these hydrous minerals (e.g., lawsonite, epidote, phengite, chlorite, and amphibole), documenting many key |  | Plunder, Alexis, Agard, Philippe, Chopin, Christian, Pourteau, Amaury, Okay, Aral I. (2015) Accretion, underplating and exhumation along a subduction interface: From subduction initiation to continental subduction (Tavşanlı zone, W. Turkey) Lithos, 226. 233-254 doi:10.1016/j.lithos.2015.01.007 | Journal (article/letter/editorial) | | initiation to continental subduction (Tavşanlı zone, W. Turkey) Alexis Plunder, Philippe Agard, Christian Chopin...initiation to continental subduction (Tavşanlı zone, W. Turkey), LITHOS (2015), doi: 10.1016/j.lithos.2015.01...journal pertain. ACCEPTED MANUSCRIPT PT , W. Turkey) RI Alexis Plunder1,2*, Philippe Agard2,3, Christian...Istanbul Technical University, Maslak 34469 Istanbul Turkey AC CE P 5Eurasia *Corresponding author now...distinguished from north to sou y the Menderes massif (Fig. 1a). For more information about palaeogeography |  | TOPUZ, G., OKAY, A. I., ALTHERR, R., SATIR, M., SCHWARZ, W. H. (2008) Late Cretaceous blueschist facies metamorphism in southern Thrace (Turkey) and its geodynamic implications. Journal of Metamorphic Geology, 26 (9) 895-913 doi:10.1111/j.1525-1314.2008.00792.x | Journal (article/letter/editorial) | | blueschist facies metamorphism in southern Thrace (Turkey) and its geodynamic implications G. TOPUZ,1 A....University of Istanbul, Ayazağa 80626, Istanbul, Turkey (topuzg@itu.edu.tr) 2 Institute of Mineralogy,...North Anatolian Fault zone in southern Thrace, NW Turkey. Two types of blueschist facies rock assemblages...(Coniacian ⁄ Santonian) by Rb–Sr phengite–whole rock and incremental 40Ar–39Ar phengite dating on blueschists....under the northern continent, i.e. the Rhodope Massif, enveloped by the Circum Rhodope Belt. The Late |  | | Report (chapter) | | sedimentary development of the Tavsanli Zone (NW Turkey): implications for rifting, passive margin development...sedimentary development of the Tavşanlı Zone (NW Turkey): implications for rifting, passive margin development... Jeoloji Bölümü, Avcılar, 34850, İstanbul, Turkey 2 School of GeoSciences, University of Edinburgh...HP/LT rocks extending NW–SE across north-western Turkey for c. 250 km (Fig. 1). The tectono-stratigraphy...in the NW and the Sivrihisar area further east (Fig. 1). The Anatolides of Turkey are traditionally subdivided |  | | Journal (article/letter/editorial) | | 67–0.79) + augite + ferroglaucophane + high-Si phengite (Si = 3.6–3.65 atoms per formula unit, a.p.f.u...epidote omphacite (XJd = 0.34) + chlorite + phengite (Si = 3.5 a.p.f.u.) + titanite + quartz in EBS...epidote + glaucophane/ferroglaucophane + chlorite + phengite + titanite + quartz through albite + chlorite...+ glaucophane to lawsonite + albite + high-Si phengite (Si = 3.6–3.7 a.p.f.u.) + glaucophane + epidote...groundmass from reacting titaniferous augite and low-Si phengite, with prehnite additionally producing pumpellyite |  | | Journal (article/letter/editorial) | | blueschist in the Iranshahr area are glaucophane, phengite, quartz ±omphacite + epidote. Post peak minerals...Blueschist facies metasedimentary rocks contain garnet, phengite, albite and epidote in the matrix and as inclusions...reserved. Neotethys oceanic crust from eastern Turkey to Makran and the Himalayas. A main result of this...continuation of the Sanandaj-Sirjan (Iran) and Bitlis (Turkey) micro-continent slivers (Ghazi & Hassanipak, 2000;...glaucophane + sodiccalcic amphibole + epidote + phengite + quartz ± omphacite and ± albite as the main |
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