Geochemical characteristics of lawsonite blueschists in tectonic mélange from the Tavşanlı Zone, Turkey: Potential constraints on the origin of Mediterranean potassium-rich magmatism
Abstract
The petrology, mineralogy, and geochemistry of lawsonite blueschists from the Tavşanlı zone in northwest Turkey—one of the best-preserved blueschist terranes in the world—have been comprehensively investigated. The blueschist samples contain lawsonite + sodic amphibole + phengite + chlorite + titanite + apatite ± aragonite ± quartz ± relict igneous pyroxene ± Mn-rich garnet and opaque phases. Lawsonite is a significant repository for Sr, Pb, Th, U, and REE, whereas phengite carries the most large-ion lithophile element (LILE), titanite hosts the highest Nb and Ta as well as considerable amounts of high field strength element (HFSE), and apatite strongly controls Sr. Two groups of blueschist have different origins—enriched continent-derived terrigenous origin and mid-ocean ridge basalts (MORB)-like submarine basalts—assigned on the basis of whole-rock major and trace element compositions and initial Sr-Nd-Pb isotopic results. Lawsonite in blueschist with enriched origin exhibits strong Th/La fractionation, raising the possibility of the involvement of blueschist facies mélange to explain the origin of Mediterranean potassium-rich magmatism because similarly high Th/La ratios are also observed in the Mediterranean potassium-rich lavas. We propose that subduction-induced tectonic imbrication took place entirely at shallow depths (<80 km), giving rise to a newly formed lithosphere where oceanic and continental crustal materials, sediments, strongly depleted peridotite blocks, and metamorphic rocks are all imbricated together, and in which many of the compositional characteristics of the lawsonite blueschist are sequestered. Subsequent melting of the fertile and enriched components in this new lithosphere would result in the generation of potassium-rich post-collisional mafic magmas with diagnostic geochemical affinities.
Funding
This work was supported by the Strategic Priority Research Program (B) of Chinese Academy of Sciences (Grant No. XDB18000000), National Natural Science Foundation of China (Grant No. 41773055) and the ARC Centre of Excellence for Core to Crust Fluid Systems/GEMOC. This is contribution 1305 from the ARC Centre of Excellence for Core to Crust Fluid Systems (http://www.ccfs.mq.edu.au) and 1296 in the GEMOC Key Centre (http://www.gemoc.mq.edu.au). The Macquarie University HDR Fund supported experimental and analytical work. Fieldwork in Turkey was funded by the Deutsche Forschungsgemeinschaft.
Acknowledgments
We are very grateful to Steve Galer, Heinz Feldmann, Reimund Jotter, and Peter Wieland for their help with isotope measurements. Regina Mertz, Will Powell, David Adams, and Norman Pearson are thanked for their instruction during laser and microprobe analyses. Simone Tommasini and Alexis Plunder gave insightful comments on an early version of this manuscript. We appreciate Estibalitz Ukar and an anonymous reviewer for their constructive reviews and the editorial support of Gregory Dumond.
References cited
Agard, P., Yamato, P., Jolivet, L., and Burov, E. (2009) Exhumation of oceanic blueschists and eclogites in subduction zones: timing and mechanisms. Earth-Science Reviews, 92(1-2), 53–79.10.1016/j.earscirev.2008.11.002Search in Google Scholar
Altunkaynak, Ş., and Genç, Ş.C. (2008) Petrogenesis and time-progressive evolution of the Cenozoic continental volcanism in the Biga Peninsula, NW Anatolia (Turkey). Lithos, 102(1-2), 316–340.10.1016/j.lithos.2007.06.003Search in Google Scholar
Baur, W.H. (1978) Crystal structure refinement of lawsonite. American Mineralogist, 63, 311–315.Search in Google Scholar
Becker, H., Jochum, K.P., and Carlson, R.W. (2000) Trace element fractionation during dehydration of eclogites from high-pressure terranes and the implications for element fluxes in subduction zones. Chemical Geology, 163(1), 65–99.10.1016/S0009-2541(99)00071-6Search in Google Scholar
Beinlich, A., Klemd, R., John, T., and Gao, J. (2010) Trace-element mobilization during Ca-metasomatism along a major fluid conduit: Eclogitization of blueschist as a consequence of fluid–rock interaction. Geochimica et Cosmochimica Acta, 74(6), 1892–1922.10.1016/j.gca.2009.12.011Search in Google Scholar
Belousova, E., Griffin, W.L., O’Reilly, S.Y., and Fisher, N.L. (2002) Igneous zircon: trace element composition as an indicator of source rock type. Contributions to Mineralogy and Petrology, 143(5), 602–622.10.1007/s00410-002-0364-7Search in Google Scholar
Bernard-Griffiths, J., Carpenter, M.S.N., Peucat, J.J., and Jahn, B.M. (1986) Geochemical and isotopic characteristics of blueschist facies rocks from the Île de Groix, Armorican Massif (northwest France). Lithos, 19(3), 235–253.10.1016/0024-4937(86)90025-3Search in Google Scholar
Bulle, F., Bröcker, M., Gärtner, C., and Keasling, A. (2010) Geochemistry and geochronology of HP mélanges from Tinos and Andros, cycladic blueschist belt, Greece. Lithos, 117(1-4), 61–81.10.1016/j.lithos.2010.02.004Search in Google Scholar
Çelik, Ö.F., Chiaradia, M., Marzoli, A., Özkan, M., Billor, Z., and Topuz, G. (2016) Jurassic metabasic rocks in the Kızılırmak accretionary complex (Kargı region, Central Pontides, Northern Turkey). Tectonophysics, 672, 34–49.10.1016/j.tecto.2016.01.043Search in Google Scholar
Çetinkaplan, M., Candan, O., Oberhänsli, R., and Bousquet, R. (2008) Pressure-temperature evolution of lawsonite eclogite in Sivrihisar; Tavşanlı Zone-Turkey. Lithos, 104(1-4), 12–32.10.1016/j.lithos.2007.11.007Search in Google Scholar
Cloos, M., and Shreve, R.L. (1988) Subduction-channel model of prism accretion, melange formation, sediment subduction, and subduction erosion at convergent plate margins: 1. Background and description. Pure and Applied Geophysics, 128(3-4), 455–500.10.1007/BF00874548Search in Google Scholar
Collins, A. S., and Robertson, A.H.F. (1997) Lycian melange, southwestern Turkey: an emplaced Late Cretaceous accretionary complex. Geology, 25(3), 255–258.10.1130/0091-7613(1997)025<0255:LMSTAE>2.3.CO;2Search in Google Scholar
Conticelli, S. (1998) The effect of crustal contamination on ultrapotassic magmas with lamproitic affinity: mineralogical, geochemical and isotope data from the Torre Alfina lavas and xenoliths, Central Italy. Chemical Geology, 149(1), 51–81.10.1016/S0009-2541(98)00038-2Search in Google Scholar
Conticelli, S., D’Antonio, M., Pinarelli, L., and Civetta, L. (2002) Source contamination and mantle heterogeneity in the genesis of Italian potassic and ultrapotassic volcanic rocks: Sr–Nd–Pb isotope data from Roman Province and Southern Tuscany. Mineralogy and Petrology, 74(2-4), 189–222.10.1007/s007100200004Search in Google Scholar
Davis, P.B., and Whitney, D.L. (2006) Petrogenesis of lawsonite and epidote eclogite and blueschist, Sivrihisar Massif, Turkey. Journal of Metamorphic Geology, 24(9), 823–849.10.1111/j.1525-1314.2006.00671.xSearch in Google Scholar
Dubacq, B., and Plunder, A. (2018) Controls on trace element distribution in oxides and silicates. Journal of Petrology, 59(2), 233–256.10.1093/petrology/egy027Search in Google Scholar
Ernst, W.G. (1988) Tectonic history of subduction zones inferred from retrograde blueschist P-T paths. Geology, 16, 1081–1084.10.1130/0091-7613(1988)016<1081:THOSZI>2.3.CO;2Search in Google Scholar
Fornash, K.F., Cosca, M.A., and Whitney, D.L. (2016) Tracking the timing of subduction and exhumation using 40Ar/39Ar phengite ages in blueschist- and eclogite-facies rocks (Sivrihisar, Turkey). Contributions to Mineralogy and Petrology, 171(7), 67.10.1007/s00410-016-1268-2Search in Google Scholar
Fotoohi Rad, G.R., Droop, G.T.R., Amini, S., and Moazzen, M. (2005) Eclogites and blueschists of the Sistan Suture Zone, eastern Iran: A comparison of P-T histories from a subduction mélange. Lithos, 84(1-2), 1–24.10.1016/j.lithos.2005.01.007Search in Google Scholar
Fryer, P., Wheat, C.G., and Mottl, M.J. (1999) Mariana blueschist mud volcanism: Implications for conditions within the subduction zone. Geology, 27(2), 103–106.10.1130/0091-7613(1999)027<0103:MBMVIF>2.3.CO;2Search in Google Scholar
Galer, S.J.G. (1999) Optimal double and triple spiking for high precision lead isotopic measurement. Chemical Geology, 157(3), 255–274.10.1016/S0009-2541(98)00203-4Search in Google Scholar
Ge, M.-h., Zhang, J.-j., Liu, K., Ling, Y.-y., Wang, M., and Wang, J.-m. (2016) Geochemistry and geochronology of the blueschist in the Heilongjiang Complex and its implications in the late Paleozoic tectonics of eastern NE China. Lithos, 261, 232–249.10.1016/j.lithos.2015.11.019Search in Google Scholar
Gieré, R., and Sorensen, S.S. (2004) Allanite and other REE-rich epidote-group minerals. Reviews in Mineralogy and Geochemistry, 56, 431–493.10.2138/gsrmg.56.1.431Search in Google Scholar
Goffe, B., Michard, A., Kienast, J.R., and Le Mer, O. (1988) A case of obduction-related high-pressure, low-temperature metamorphism in upper crustal nappes, Arabian continental margin, Oman: P-T paths and kinematic interpretation. Tectonophysics, 151, 363–386.10.1016/0040-1951(88)90253-3Search in Google Scholar
Göncüoglu, M.C., Yalınız, M.K., and Tekin, U.K. (2006) Geochemistry, tectono-Magmatic discrimination and radiolarian ages of basic extrusives within the Izmir-Ankara Suture Belt (NW Turkey): Time constraints for the Neotethyan evolution. Ofioliti, 31(1), 25–38.Search in Google Scholar
Göncüoglu, M.C., Sayit, K., and Tekin, U.K. (2010) Oceanization of the northern Neotethys: Geochemical evidence from ophiolitic melange basalts within the İzmir–Ankara suture belt, NW Turkey. Lithos, 116(1), 175–187.10.1016/j.lithos.2010.01.007Search in Google Scholar
Gonzalez, C.M., Gorczyk, W., and Gerya, T.V. (2015) Decarbonation of subducting slabs: Insight from petrological–thermomechanical modeling. Gondwana Research, 36, 314–332.10.1016/j.gr.2015.07.011Search in Google Scholar
Guo, Z. et al. (2014) The role of subduction channel mélanges and convergent subduction systems in the petrogenesis of post-collisional K-rich mafic magmatism in NW Tibet. Lithos, 198-199, 184–201.10.1016/j.lithos.2014.03.020Search in Google Scholar
Haggerty, S.E., Fung, A.T., and Burt, D.M. (1994) Apatite, phosphorus and titanium in eclogitic garnet from the upper mantle. Geophysical Research Letters, 21(16), 1699–1702.10.1029/94GL01001Search in Google Scholar
Harris, R.A., Sawyer, R.K., and Audley-Charles, M.G. (1998) Collisional melange development: Geologic associations of active melange-forming processes with exhumed melange facies in the western Banda orogen, Indonesia. Tectonics, 17(3), 458–479.10.1029/97TC03083Search in Google Scholar
Hart, S.R. (1984) A large-scale isotope anomaly in the Southern Hemisphere mantle. Nature, 309(5971), 753.10.1038/309753a0Search in Google Scholar
Hauri, E.H., Wagner, T.P., and Grove, T.L. (1994) Experimental and natural partitioning of Th, U, Pb and other trace elements between garnet, clinopyroxene and basaltic melts. Chemical Geology, 117(1-4), 149–166.10.1016/0009-2541(94)90126-0Search in Google Scholar
Hermann, J. (2002) Allanite: thorium and light rare earth element carrier in subducted crust. Chemical Geology, 192(3-4), 289–306.10.1016/S0009-2541(02)00222-XSearch in Google Scholar
Hofmann, A.W., Jochum, K.P., Seufert, M., and White, W.M. (1986) Nb and Pb in oceanic basalts: new constraints on mantle evolution. Earth and Planetary Science Letters, 79(1), 33–45.10.1016/0012-821X(86)90038-5Search in Google Scholar
Honegger, K., Le Fort, P., Mascle, G., and Zimmermann, J.L. (1989) The blueschists along the Indus Suture Zone in Ladakh, NW Himalaya. Journal of Metamorphic Geology, 7(1), 57–72.10.1111/j.1525-1314.1989.tb00575.xSearch in Google Scholar
Jochum, K.P. et al. (2011) Determination of reference values for NIST SRM 610-617 glasses following ISO guidelines. Geostandards and Geoanalytical Research, 35(4), 397–429.10.1111/j.1751-908X.2011.00120.xSearch in Google Scholar
Karson, J.A. (2002) Geologic structure of the uppermost oceanic crust created at fast-to intermediate-rate spreading centers. Annual Review of Earth and Planetary Sciences, 30(1), 347–384.10.1146/annurev.earth.30.091201.141132Search in Google Scholar
Kieffer, B., Arndt, N. Lapierre, H., Bastien, F., Bosch, D., Pecher, A., Yirgu, G., Ayalew, D., Weis, D., and Jerram, D.A (2004), Flood and Shield Basalts from Ethiopia: Magmas from the African Superswell. Journal of Petrology, 45(4), 793–834(742).10.1093/petrology/egg112Search in Google Scholar
King, R.L., Bebout, G.E., Moriguti, T., and Nakamura, E. (2006) Elemental mixing systematics and Sr–Nd isotope geochemistry of mélnge formation: Obstacles to identification of fluid sources to arc volcanics. Earth and Planetary Science Letters, 246(3), 288–304.10.1016/j.epsl.2006.03.053Search in Google Scholar
Kim, D., Katayama, I., Wallis, S., Michibayashi, K., Miyake, A., Seto, Y., and Azuma, S. (2015) Deformation microstructures of glaucophane and lawsonite in experimentally deformed blueschists: Implications for intermediate-depth intraplate earthquakes. Journal of Geophysical Research: Solid Earth, 120(2), 1229–1242.10.1002/2014JB011528Search in Google Scholar
Kleine, B.I., Skelton, A.D.L., Huet, B., and Pitcairn, I.K. (2014) Preservation of blueschist-facies minerals along a shear zone b coupled metasomatism and fast-flowing CO2-bearing fluids. Journal of Petrology, 55(10), 1905–1939.10.1093/petrology/egu045Search in Google Scholar
Klemd, R. (2013) Metasomatism during high-pressure metamorphism: eclogites and blueschist-facies rocks, metasomatism and the chemical transformation of rock. Lecture Notes in Earth System Sciences, pp. 351–413. Springer.10.1007/978-3-642-28394-9_10Search in Google Scholar
Klemme, S., Blundy, J.D., and Wood, B.J. (2002) Experimental constraints on major and trace element partitioning during partial melting of eclogite. Geochimica et Cosmochimica Acta, 66(17), 3109–3123.10.1016/S0016-7037(02)00859-1Search in Google Scholar
Leake, B.E., Woolley, A.R., Arps, C.E.S., Birch, W.D., Gilbert, M.C., Grice, J.D., Hawthorne, F.C., Kato, A., Kisch, H.J., and Krivovichev, V.G. (1997) Report. Nomenclature of amphiboles: report of the subcommittee on amphiboles of the international mineralogical association commission on new minerals and mineral names. Mineralogical Magazine, 61(2), 295–321.Search in Google Scholar
Lugmair, G.W., and Galer, S.J.G. (1992) Age and isotopic relationships among the angrites Lewis Cliff 86010 and Angra dos Reis. Geochimica et Cosmochimica Acta, 56(4), 1673–1694.10.1016/0016-7037(92)90234-ASearch in Google Scholar
Lugmair, G.W., and Marti, K. (1978) Lunar initial 143Nd/144Nd: Differential evolution of the lunar crust and mantle. Earth and Planetary Science Letters, 39(3), 349–357.10.1016/0012-821X(78)90021-3Search in Google Scholar
Lustrino, M., Duggen, S., and Rosenberg, C.L. (2011) The Central-Western Mediterranean: anomalous igneous activity in an anomalous collisional tectonic setting. Earth-Science Reviews, 104(1), 1–40.10.1016/j.earscirev.2010.08.002Search in Google Scholar
Maekawa, H., Shozul, M., Ishii, T., Fryer, P., and Pearce, J.A. (1993) Blueschist Metamorphism in an Active Subduction Zone. Nature, 364, 520–523.10.1038/364520a0Search in Google Scholar
Martin, L.A.J., Hermann, J., Gauthiez-Putallaz, L., Whitney, D.L., Vitale Brovarone, A., Fornash, K.F., and Evans, N.J. (2014) Lawsonite geochemistry and stability implication for trace element and water cycles in subduction zones. Journal of Metamorphic Geology, 32(5), 455–478.10.1111/jmg.12093Search in Google Scholar
Martin, L.A.J., Wood, B.J., Turner, S., and Rushmer, T. (2011) Experimental Measurements of Trace Element Partitioning Between Lawsonite, Zoisite and Fluid and their Implication for the Composition of Arc Magmas. Journal of Petrology, 52(6), 1049–1075.10.1093/petrology/egr018Search in Google Scholar
Maruyama, S., Liou, J.G., and Terabayashi, M. (1996) Blueschists and eclogites of the world and their exhumation. International Geology Review, 38(6), 485–594.10.1080/00206819709465347Search in Google Scholar
Maulana, A., Christy, A.G., Ellis, D.J., Imai, A., and Watanabe, K. (2013) Geochemistry of eclogite- and blueschist-facies rocks from the Bantimala Complex, South Sulawesi, Indonesia: Protolith origin and tectonic setting. Island Arc, 22(4), 427–452.10.1111/iar.12037Search in Google Scholar
Miller, C., Schuster, R., Klötzli, U., Frank, W., and Purtscheller, F. (1999) Post-collisional potassic and ultrapotassic magmatism in SW Tibet: geochemical and Sr–Nd–Pb–O isotopic constraints for mantle source characteristics and petrogenesis. Journal of Petrology, 40(9), 1399–1424.10.1093/petroj/40.9.1399Search in Google Scholar
Miller, D.P., Marschall, H.R., and Schumacher, J.C. (2009) Metasomatic formation and petrology of blueschist-facies hybrid rocks from Syros (Greece): Implications for reactions at the slab–mantle interface. Lithos, 107(1-2), 53–67.10.1016/j.lithos.2008.07.015Search in Google Scholar
Mulcahy, S.R., Vervoort, J.D., and Renne, P.R. (2014) Dating subduction zone metamorphism with combined garnet and lawsonite Lu-Hf geochronology. Journal of Metamorphic Geology, 32(5), 515–533.10.1111/jmg.12092Search in Google Scholar
Okay, A.I. (1978) Sodic pyroxenes from metabasites in the eastern Mediterranean. Contributions to Mineralogy and Petrology, 68(1), 7–11.10.1007/BF00375442Search in Google Scholar
Okay, A.I. (1980a) Mineralogy, petrology, and phase relations of glaucophane-lawsonite zone blueschists from the Tavşanli Region, Northwest Turkey. Contributions to Mineralogy and Petrology, 72(3), 243–255.10.1007/BF00376143Search in Google Scholar
Okay, A.I. (1980b) Lawsonite zone blueschists and a sodic amphibole producing reaction in the Tavşanli Region, Northwest Turkey. Contributions to Mineralogy and Petrology, 75(3), 179–186.10.1007/BF01166758Search in Google Scholar
Okay, A.I. (1982) Incipient blueschist metamorphism and metasomatism in the Tavşanli region, Northwest Turkey. Contributions to Mineralogy and Petrology, 79(4), 361–367.10.1007/BF01132065Search in Google Scholar
Okay, A.I. (1986) High-pressure/low-temperature metamorphic rocks of Turkey. Geological Society of America Memoirs, 164, 333–347.10.1130/MEM164-p333Search in Google Scholar
Okay, A.I. (1989) Alpine-Himalayan Blueschists. Annual Review of Earth and Planetary Sciences, 17(1), 55–87.10.1146/annurev.ea.17.050189.000415Search in Google Scholar
——— (2002) Jadeite-chloritoid-glaucophane-lawsonite blueschists in north-west Turkey: unusually high P/T ratios in continental crust. Journal of Metamorphic Geology, 20(8), 757–768.10.1046/j.1525-1314.2002.00402.xSearch in Google Scholar
Okay, A.I., and Tüysüz, O. (1999) Tethyan sutures of northern Turkey. Geological Society, London, Special Publications, 156(1), 475–515.10.1144/GSL.SP.1999.156.01.22Search in Google Scholar
Okay, A.I., and Whitney, D.L. (2010) Blueschists, eclogites, ophiolites and suture zones in northwest Turkey: A review and a field excursion guide. Ofioliti, 35(2), 131–171.Search in Google Scholar
Okay, A.I., Harris, N.B.W., and Kelley, S.P. (1998) Exhumation of blueschists along a Tethyan suture in northwest Turkey. Tectonophysics, 285(3-4), 275–299.10.1016/S0040-1951(97)00275-8Search in Google Scholar
Okazaki, K., and Hirth, G. (2016) Dehydration of lawsonite could directly trigger earthquakes in subducting oceanic crust. Nature, 530, 81–84.10.1038/nature16501Search in Google Scholar
Özbey, Z., Ustaömer, T., and Robertson, A.H.F. (2013) Mesozoic magmatic and sedimentary development of the Tavşanlı Zone (NW Turkey): implications for rifting, passive margin development and ocean crust emplacement. Geological Society, London, Special Publications, 372.10.1144/SP372.17Search in Google Scholar
Pagé, L., Hattori, K., de Hoog, J.C.M., and Okay, A.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, 133–142.10.1016/j.epsl.2016.02.054Search in Google Scholar
Palin, R.M., and White, R.W. (2015) Emergence of blueschists on Earth linked to secular changes in oceanic crust composition. Nature Geoscience, 9, 60–64.10.1038/ngeo2605Search in Google Scholar
Parkinson, C.D. (1996) The origin and significance of metamorphosed tectonic blocks in mélanges: evidence from Sulawesi, Indonesia. Terra Nova, 8(4), 312–323.10.1111/j.1365-3121.1996.tb00564.xSearch in Google Scholar
Patočka, F., and Pin, C. (2005) Sm-Nd isotope and trace element evidence for heterogeneous igneous protoliths of Variscan mafic blueschists in the East Krkonoše Complex (West Sudetes, NE Bohemian Massif, Czech Republic). Geodinamica Acta, 18(5), 363–374.10.3166/ga.18.363-374Search in Google Scholar
Pearce, J.A. (1975) Basalt geochemistry used to investigate past tectonic environments on Cyprus. Tectonophysics, 25(1), 41–67.10.1016/0040-1951(75)90010-4Search in Google Scholar
——— (1983) The role of sub-continental lithosphere in magma genesis at destructive plate margins. Continental Basalts & Mantle Xenoliths, 147(6), 2162–2173.Search in Google Scholar
Pearce, J.A., and Cann, J.R. (1973) Tectonic Setting of Basic Volcanic Rocks determined using Trace Element Analyses. Earth & Planetary Science Letters, 19(2), 290–300.10.1016/0012-821X(73)90129-5Search in Google Scholar
Peccerillo, A., and Martinotti, G. (2006) The Western Mediterranean lamproitic magmatism: origin and geodynamic significance. Terra Nova, 18(2), 109–117.10.1111/j.1365-3121.2006.00670.xSearch in Google Scholar
Plank, T. (2005) Constraints from thorium/lanthanum on sediment recycling at subduction zones and the evolution of the continents. Journal of Petrology, 46(5), 921–944.10.1093/petrology/egi005Search in Google Scholar
Plank, T., and Langmuir, C.H. (1998) The chemical composition of subducting sediment and its consequences for the crust and mantle. Chemical Geology, 145(3-4), 325–394.10.1016/S0009-2541(97)00150-2Search in Google Scholar
Plunder, A., Agard, P., Chopin, C., and Okay, A.I. (2013) Geodynamics of the Tavşanlı zone, western Turkey: Insights into subduction/obduction processes. Tectonophysics, 608(0), 884–903.10.1016/j.tecto.2013.07.028Search in Google Scholar
Plunder, A., Agard, P., Chopin, C., Pourteau, A., and Okay, A.I. (2015) Accretion, underplating and exhumation along a subduction interface: From subduction initiation to continental subduction (Tavşanlı zone, W. Turkey). Lithos, 226(0), 233–254.10.1016/j.lithos.2015.01.007Search in Google Scholar
Plunder, A., Agard, P., Chopin, C., Soret, M., Okay, A.I., and Whitechurch, H. (2016) Metamorphic sole formation, emplacement and blueschist facies overprint: early subduction dynamics witnessed by western Turkey ophiolites. Terra Nova, 28(5), 329–339.10.1111/ter.12225Search in Google Scholar
Poli, S., and Schmidt, M.W. (1997) The high-pressure stability of hydrous phases in orogenic belts: an experimental approach on eclogite-forming processes. Tectonophysics, 273(1-2), 169–184.10.1016/S0040-1951(96)00293-4Search in Google Scholar
Pourteau, A., Candan, O., and Oberhänsli, R. (2010) High-pressure metasediments in central Turkey: Constraints on the Neotethyan closure history. Tectonics, 29(5), TC5004.10.1029/2009TC002650Search in Google Scholar
Pourteau, A., Sudo, M., Candan, O., Lanari, P., Vidal, O., and Oberhänsli, R. (2013) Neotethys closure history of Anatolia: insights from 40Ar-39Ar geochronology and P-T estimation in high-pressure metasedimentary rocks. Journal of Metamorphic Geology, 31(6), 585–606.10.1111/jmg.12034Search in Google Scholar
Prelević, D., and Foley, S.F. (2007) Accretion of arc-oceanic lithospheric mantle in the Mediterranean: Evidence from extremely high-Mg olivines and Cr‑rich spinel inclusions in lamproites. Earth and Planetary Science Letters, 256(1‑2), 120–135.10.1016/j.epsl.2007.01.018Search in Google Scholar
Prelević, D., Foley, S.F., Romer, R., and Conticelli, S. (2008) Mediterranean Tertiary lamproites derived from multiple source components in postcollisional geodynamics. Geochimica et Cosmochimica Acta, 72(8), 2125–2156.10.1016/j.gca.2008.01.029Search in Google Scholar
Prelević, D., Jacob, D.E., and Foley, S.F. (2013) Recycling plus: A new recipe for the formation of Alpine-Himalayan orogenic mantle lithosphere. Earth and Planetary Science Letters, 362, 187–197.10.1016/j.epsl.2012.11.035Search in Google Scholar
Prelević, D., Akal, C., Romer, R.L., Mertz-Kraus, R., and Helvacı, C. (2015) Magmatic response to slab tearing: Constraints from the Afyon Alkaline Volcanic Complex, Western Turkey. Journal of Petrology, 56(3), 527–562.10.1093/petrology/egv008Search in Google Scholar
Raymond, L.A. (1984) Classification of melanges. Geological Society of America Special Papers, 198, 7–20.10.1130/SPE198-p7Search in Google Scholar
Rollinson, H.R. (2014) Using Geochemical Data: Evaluation, Presentation, Interpretation. Routledge, London.10.4324/9781315845548Search in Google Scholar
Rojay, B., Altıner, D., Altıner, S.Ö., Pırıl Önen, A., James, S., and Thirlwall, M.F. (2004) Geodynamic significance of the Cretaceous pillow basalts from North Anatolian Ophiolitic Mélange Belt (Central Anatolia, Turkey): geochemical and paleontological constraints. Geodinamica Acta, 17(5), 349–361.10.3166/ga.17.349-361Search in Google Scholar
Rubatto, D. (2002) Zircon trace element geochemistry: partitioning with garnet and the link between U–Pb ages and metamorphism. Chemical Geology, 184(1), 123–138.10.1016/S0009-2541(01)00355-2Search in Google Scholar
Saunders, A.D., Norry, M.J., and Tarney, J. (1988) Origin of MORB and chemically-depleted mantle reservoirs: Trace element constraints. Journal of Petrology, Special Volume, 1, 415–445.10.1093/petrology/Special_Volume.1.415Search in Google Scholar
Schmidt, M.W. (1995) Lawsonite: Upper pressure stability and formation of higher density hydrous phases. American Mineralogist, 80(11-12), 1286–1292.10.2138/am-1995-11-1218Search in Google Scholar
Schmidt, M.W., and Poli, S. (1994) The stability of lawsonite and zoisite at high pressures: Experiments in CASH to 92 kbar and implications for the presence of hydrous phases in subducted lithosphere. Earth and Planetary Science Letters, 124(1-4), 105–118.10.1016/0012-821X(94)00080-8Search in Google Scholar
Schumacher, J.C. (1997) Appendix 2: the estimation of ferric iron in electron microprobe analysis of amphiboles. Mineralogical Magazine, 61(405), 312–321.10.1180/S0026461X00011397Search in Google Scholar
Seaton, N.C.A., Whitney, D.L., Teyssier, C., Toraman, E., and Heizler, M.T. (2009) Recrystallization of high-pressure marble (Sivrihisar, Turkey). Tectonophysics, 479, 241–253.10.1016/j.tecto.2009.08.015Search in Google Scholar
Searle, M., Waters, D.J., Martin, H.N., and Rex, D.C. (1994) Structure and metamorphism of blueschist-eclogite facies rocks from the northeastern Oman Mountains. Journal of the Geological Society, 151, 555–576.10.1144/gsjgs.151.3.0555Search in Google Scholar
Şengör, A.M., and Yilmaz, Y. (1981) Tethyan evolution of Turkey: a plate tectonic approach. Tectonophysics, 75(3), 181–241.10.1016/0040-1951(81)90275-4Search in Google Scholar
Sherlock, S., Kelley, S., Inger, S., Harris, N., and Okay, A. (1999) 40Ar-39Ar and Rb-Sr geochronology of high-pressure metamorphism and exhumation history of the Tavşanlı Zone, NW Turkey. Contributions to Mineralogy and Petrology, 137(1-2), 46–58.10.1007/PL00013777Search in Google Scholar
Shervais, J.W. (1982) Ti-V plots and the petrogenesis of modern and ophiolitic lavas. Earth and Planetary Science Letters, 59(1), 101–118.10.1016/0012-821X(82)90120-0Search in Google Scholar
Song, S., Niu, Y., Zhang, L., Wei, C., Liou, J.G., and Su, L. (2009) Tectonic evolution of early Paleozoic HP metamorphic rocks in the North Qilian Mountains, NW China: New perspectives. Journal of Asian Earth Sciences, 35(3), 334–353.10.1016/j.jseaes.2008.11.005Search in Google Scholar
Sorensen, S.S., Grossman, J.N., and Perfit, M.R. (1997) Phengite-hosted LILE enrichment in eclogite and related rocks: Implications for fluid-mediated mass transfer in subduction zones and arc magma genesis. Journal of Petrology, 38(1), 3–34.10.1093/petroj/38.1.3Search in Google Scholar
Spandler, C., Hermann, J., Arculus, R., and Mavrogenes, J. (2003) Redistribution of trace elements during prograde metamorphism from lawsonite blueschist to eclogite facies; implications for deep subduction-zone processes. Contributions to Mineralogy and Petrology, 146(2), 205–222.10.1007/s00410-003-0495-5Search in Google Scholar
Steiger, R.H., and Jäger, E. (1977) Subcommission on geochronology: Convention on the use of decay constants in geo- and cosmochronology. Earth and Planetary Science Letters, 36(3), 359–362.10.1016/0012-821X(77)90060-7Search in Google Scholar
Stern, R.J. (2005) Evidence from ophiolites, blueschists, and ultrahigh-pressure metamorphic terranes that the modern episode of subduction tectonics began in Neoproterozoic time. Geology, 33(7), 557–560.10.1130/G21365.1Search in Google Scholar
Stracke, A., Bizimis, M., and Salters, V.J.M. (2003) Recycling oceanic crust: Quantitative constraints. Geochemistry, Geophysics, Geosystems, 4(3), 8003.10.1029/2001GC000223Search in Google Scholar
Sun, S.S., and McDonough, W.F. (1989) Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes. Geological Society, London, Special Publications, 42(1), 313–345.10.1144/GSL.SP.1989.042.01.19Search in Google Scholar
Tang, X.-C., and Zhang, K.-J. (2013) Lawsonite- and glaucophane-bearing blueschists from NW Qiangtang, northern Tibet, China: mineralogy, geochemistry, geochronology, and tectonic implications. International Geology Review, 56(2), 150–166.10.1080/00206814.2013.820866Search in Google Scholar
Tankut, A., Dilek, Y., and Önen, P. (1998) Petrology and geochemistry of the Neo-Tethyan volcanism as revealed in the Ankara melange, Turkey. Journal of Volcanology and Geothermal Research, 85(1), 265–284.10.1016/S0377-0273(98)00059-6Search in Google Scholar
Thirlwall, M.F., Upton, B.G.J., and Jenkins, C. (1994), Interaction between continental lithosphere and the Iceland plume—Sr-Nd-Pb isotope geochemistry of Tertiary basalts. NE Greenland, Journal of Petrology, 35(3), 839–879.10.1093/petrology/35.3.839Search in Google Scholar
Tommasini, S., Avanzinelli, R., and Conticelli, S. (2011) The Th/La and Sm/La conundrum of the Tethyan realm lamproites. Earth and Planetary Science Letters, 301(3-4), 469–478.10.1016/j.epsl.2010.11.023Search in Google Scholar
Topuz, G., Okay, A.I., Altherr, R., Satir, M., and Schwarz, W.H. (2008) Late Cretaceous blueschist facies metamorphism in southern Thrace (Turkey) and its geodynamic implications. Journal of Metamorphic Geology, 26(9), 895–913.10.1111/j.1525-1314.2008.00792.xSearch in Google Scholar
Tribuzio, R., and Giacomini, F. (2002) Blueschist facies metamorphism of peralkaline rhyolites from the Tenda crystalline massif (northern Corsica): evidence for involvement in the Alpine subduction event? Journal of Metamorphic Geology, 20(5), 513–526.10.1046/j.1525-1314.2002.00382.xSearch in Google Scholar
Tribuzio, R., Messiga, B., Vannucci, R., and Bottazzi, P. (1996) Rare earth element redistribution during high-pressure-low-temperature metamorphism in ophiolitic Fe-gabbros (Liguria, northwestern Italy): Implications for light REE mobility in subduction zones. Geology, 24(8), 711.10.1130/0091-7613(1996)024<0711:REERDH>2.3.CO;2Search in Google Scholar
Tsujimori, T., and Ernst, W.G. (2014) Lawsonite blueschists and lawsonite eclogites as proxies for palaeo-subduction zone processes: a review. Journal of Metamorphic Geology, 32(5), 437–454.10.1111/jmg.12057Search in Google Scholar
Tsujimori, T., Sisson, V., Liou, J., Harlow, G., and Sorensen, S. (2006) Very-low-temperature record of the subduction process: A review of worldwide lawsonite eclogites. Lithos, 92(3-4), 609–624.10.1016/j.lithos.2006.03.054Search in Google Scholar
Turner, S., Hawkesworth, C., van Calsteren, P., Heath, E., Macdonald, R., and Black, S. (1996) U-series isotopes and destructive plate margin magma genesis in the Lesser Antilles. Earth and Planetary Science Letters, 142(1), 191–207.10.1016/0012-821X(96)00078-7Search in Google Scholar
Ueno, T. (1999) REE-bearing sector-zoned lawsonite in the Sanbagawa pelitic schists of the eastern Kii Peninsula, central Japan. European Journal of Mineralogy, 11(6), 993–998.10.1127/ejm/11/6/0993Search in Google Scholar
Ukar, E. (2012) Tectonic significance of low-temperature blueschist blocks in the Franciscan mélange at San Simeon, California. Tectonophysics, 568–569(0), 154–169.10.1016/j.tecto.2011.12.039Search in Google Scholar
Ukar, E., and Cloos, M. (2015) Magmatic origin of low-T mafic blueschist and greenstone blocks from the Franciscan mélange, San Simeon, California. Lithos, 230, 17–29.10.1016/j.lithos.2015.05.002Search in Google Scholar
Usui, T., Kobayashi, K., Nakamura, E., and Helmstaedt, H. (2007) Trace element fractionation in deep subduction zones inferred from a lawsonite-eclogite xenolith from the Colorado Plateau. Chemical Geology, 239(3-4), 336–351.10.1016/j.chemgeo.2006.08.009Search in Google Scholar
Van Hinsbergen, D.J.J. (2010) A key extensional metamorphic complex reviewed and restored: the Menderes Massif of western Turkey. Earth-Science Reviews, 102(1-2), 60–76.10.1016/j.earscirev.2010.05.005Search in Google Scholar
Van Westrenen, W., Blundy, J.D., and Wood, B.J. (2001) High field strength element/rare earth element fractionation during partial melting in the presence of garnet: Implications for identification of mantle heterogeneities. Geochemistry, Geophysics, Geosystems, 2(7), 223–235.10.1029/2000GC000133Search in Google Scholar
Vitale Brovarone, A., Alard, O., Beyssac, O., Martin, L., and Picatto, M. (2014) Lawsonite metasomatism and trace element recycling in subduction zones. Journal of Metamorphic Geology, 489–514.10.1111/jmg.12074Search in Google Scholar
Volkova, N.I., and Budanov, V.I. (1999) Geochemical discrimination of metabasalt rocks of the Fan–Karategin transitional blueschist/greenschist belt, South Tianshan, Tajikistan: seamount volcanism and accretionary tectonics. Lithos, 47(3-4), 201–216.10.1016/S0024-4937(99)00019-5Search in Google Scholar
Volkova, N.I., Stupakov, S.I., Babin, G.A., Rudnev, S.N., and Mongush, A.A. (2009) Mobility of trace elements during subduction metamorphism as exemplified by the blueschists of the Kurtushibinsky Range, Western Sayan. Geochemistry International, 47(4), 380–392.10.1134/S0016702909040053Search in Google Scholar
Wang, Y., Prelević, D., Buhre, S., and Foley, S.F. (2017) Constraints on the sources of post-collisional K-rich magmatism: The roles of continental clastic sediments and terrigenous blueschists. Chemical Geology, 455, 192–207.10.1016/j.chemgeo.2016.10.006Search in Google Scholar
Wehrmeister, U., Jacob, D.E., Soldati, A.L., Loges, N., Häger, T., and Hofmeister, W. (2011) Amorphous, nanocrystalline and crystalline calcium carbonates in biological materials. Journal of Raman Spectroscopy, 42(5), 926–935.10.1002/jrs.2835Search in Google Scholar
Whitney, D.L., Teyssier, C., Seaton, N.C.A., and Fornash, K.F. (2014) Petrofabrics of high-pressure rocks exhumed at the slab-mantle interface from the “point of no return” in a subduction zone (Sivrihisar, Turkey). Tectonics, 33, 2315–2341.10.1002/2014TC003677Search in Google Scholar
Winchester, J.A., and Floyd, P.A. (1976) Geochemical magma type discrimination: application to altered and metamorphosed basic igneous rocks. Earth and Planetary Science Letters, 28(3), 459–469.10.1016/0012-821X(76)90207-7Search in Google Scholar
Wood, D.A. (1980) The application of a Th Hf Ta diagram to problems of tectonomagmatic classification and to establishing the nature of crustal contamination of basaltic lavas of the British Tertiary Volcanic Province. Earth & Planetary Science Letters, 50(1), 11–30.10.1016/0012-821X(80)90116-8Search in Google Scholar
Xia, Q.-X., and Zhou, L.-G. (2017) Different origins of garnet in high pressure to ultrahigh pressure metamorphic rocks. Journal of Asian Earth Sciences, 145, 130–148.10.1016/j.jseaes.2017.03.037Search in Google Scholar
Xiao, Y., Niu, Y., Li, H., Wang, H., Liu, X., and Davidson, J. (2014) Trace element budgets and (re-)distribution during subduction-zone ultrahigh pressure metamorphism: Evidence from Western Tianshan, China. Chemical Geology, 365, 54–68.10.1016/j.chemgeo.2013.12.005Search in Google Scholar
Yaxley, G.M., and Green, D.H. (1998) Reactions between eclogite and peridotite: mantle refertilisation by subduction of oceanic crust. Schweizerische Mineralogische und Petrographische Mitteilungen, 78, 243–255.Search in Google Scholar
Zhang, L., Wang, Q., and Song, S. (2009) Lawsonite blueschist in Northern Qilian, NW China: P–T pseudosections and petrologic implications. Journal of Asian Earth Sciences, 35(3-4), 354–366.10.1016/j.jseaes.2008.11.007Search in Google Scholar
Zheng, B., Zhu, W., Jahn, B.M., Shu, L., Zhang, Z., and Su, J. (2010) Subducted Precambrian oceanic crust: Geochemical and Sr Nd isotopic evidence from metabasalts of the Aksu blueschist, NW China. Journal of the Geological Society, 167(6), 1161–1170.10.1144/0016-76492010-001Search in Google Scholar
Zhu, C.Y., Zhao, G., Sun, M., Liu, Q., Han, Y., Hou, W., Zhang, X., and Eizenhofer, P.R. (2015) Geochronology and geochemistry of the Yilan blueschists in the Heilongjiang Complex, northeastern China and tectonic implications. Lithos, 216-217, 241–253.10.1016/j.lithos.2014.12.021Search in Google Scholar
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Articles in the same Issue
- Uptake and release of arsenic and antimony in alunite-jarosite and beudantite group minerals
- Trends in the discovery of new minerals over the last century
- Origin of milky optical features in type IaB diamonds: Dislocations, nano-inclusions, and polycrystalline diamond
- Zeolite-group minerals in phonolite-hosted deposits of the Kaiserstuhl Volcanic Complex, Germany
- Melting curve minimum of barium carbonate BaCO3 near 5 GPa
- The effect of coordination changes on the bulk moduli of amorphous silicates: The SiO2-TiO2 system as a test case
- Energetics of ethanol and carbon dioxide adsorption on anatase, rutile, and γ-alumina nanoparticles
- The effect of oxidation on the mineralogy and magnetic properties of olivine
- Phase, morphology, elemental composition, and formation mechanisms of biogenic and abiogenic Fe-Cu-sulfide nanoparticles: A comparative study on their occurrences under anoxic conditions
- Static compression of B2 KCl to 230 GPa and its P-V-T equation of state
- Geochemical characteristics of lawsonite blueschists in tectonic mélange from the Tavşanlı Zone, Turkey: Potential constraints on the origin of Mediterranean potassium-rich magmatism
- Origin of vesuvianite-garnet veins in calc-silicate rocks from part of the Chotanagpur Granite Gneiss Complex, East Indian Shield: The quantitative P-T-XCO2 topology in parts of the system CaO-MgO-Al2O3-SiO2-H2O-CO2 (+Fe2O3, F)
- A new occurrence of yimengite-hawthorneite and crichtonite-group minerals in an orthopyroxenite from kimberlite: Implications for mantle metasomatism
- Discovery of asimowite, the Fe-analog of wadsleyite, in shock-melted silicate droplets of the Suizhou L6 and the Quebrada Chimborazo 001 CB3.0 chondrites
- New Mineral Names
Articles in the same Issue
- Uptake and release of arsenic and antimony in alunite-jarosite and beudantite group minerals
- Trends in the discovery of new minerals over the last century
- Origin of milky optical features in type IaB diamonds: Dislocations, nano-inclusions, and polycrystalline diamond
- Zeolite-group minerals in phonolite-hosted deposits of the Kaiserstuhl Volcanic Complex, Germany
- Melting curve minimum of barium carbonate BaCO3 near 5 GPa
- The effect of coordination changes on the bulk moduli of amorphous silicates: The SiO2-TiO2 system as a test case
- Energetics of ethanol and carbon dioxide adsorption on anatase, rutile, and γ-alumina nanoparticles
- The effect of oxidation on the mineralogy and magnetic properties of olivine
- Phase, morphology, elemental composition, and formation mechanisms of biogenic and abiogenic Fe-Cu-sulfide nanoparticles: A comparative study on their occurrences under anoxic conditions
- Static compression of B2 KCl to 230 GPa and its P-V-T equation of state
- Geochemical characteristics of lawsonite blueschists in tectonic mélange from the Tavşanlı Zone, Turkey: Potential constraints on the origin of Mediterranean potassium-rich magmatism
- Origin of vesuvianite-garnet veins in calc-silicate rocks from part of the Chotanagpur Granite Gneiss Complex, East Indian Shield: The quantitative P-T-XCO2 topology in parts of the system CaO-MgO-Al2O3-SiO2-H2O-CO2 (+Fe2O3, F)
- A new occurrence of yimengite-hawthorneite and crichtonite-group minerals in an orthopyroxenite from kimberlite: Implications for mantle metasomatism
- Discovery of asimowite, the Fe-analog of wadsleyite, in shock-melted silicate droplets of the Suizhou L6 and the Quebrada Chimborazo 001 CB3.0 chondrites
- New Mineral Names