| | Journal (article/letter/editorial) | metamorphic sequence? New high-spatial resolution petrological data for the New Caledonia case study A. Vitale...2013 Abstract The metamorphic belt of northern New Caledonia represents one of the best-exposed example...marked by a gradual evolution from very low-grade lawsonite-bearing to high-grade epidote-bearing eclogite...as major tectonic discontinuities. We present a new and extensive metamorphic dataset acquired by means...7193, UPMC Sorbonne UniversiteĢs, 75005 Paris, France e-mail: alberto.vitale-brovarone@impmc.upmc.fr | | TSUJIMORI, T, SISSON, V, LIOU, J, HARLOW, G, SORENSEN, S (2006) Very-low-temperature record of the subduction process: A review of worldwide lawsonite eclogites. Lithos, 92 (3) 609-624 doi:10.1016/j.lithos.2006.03.054 | Journal (article/letter/editorial) | the subduction process: A review of worldwide lawsonite eclogites Tatsuki Tsujimori a,ā, Virginia B. Sisson...History, Central Park West at 79th Street, New York, New York 10024-5192, USA Department of Mineral Sciences...2006 Available online 19 June 2006 Abstract Lawsonite eclogites preserve a record of very-low-temperature...mĆ©lange. Peak lawsonite-eclogite facies mineral assemblages (garnet + omphacite + lawsonite + rutile) typically...conditions erase former lawsonite-eclogite relics. Various pseudomorphs after lawsonite occur, particularly | | | Journal (article/letter/editorial) | 2000, 18, 79ā90 Hydration of eclogite, Pam Peninsula, New Caledonia C . J. C A R SON , 1, * G . L . C L...barroisite-bearing eclogite facies metabasites in northern New Caledonia. The mineralogical evolution can be modelled...P#9 kbar. Key words: eclogite; glaucophanite; New Caledonia; pseudosection. I N T R O D U C T IO N Garnet...located on the Pam Peninsula, northern New Caledonia (Fig. 1a). Rocks of the Pam Peninsula have been divided...Department of Geology and Geophysics, Yale University, New Haven, Connecticut 06511, USA. Ā© Blackwell Science | | | Journal (article/letter/editorial) | 715ā725 doi:10.1111/j.1525-1314.2006.00664.x The lawsonite paradox: a comparison of field evidence and mineral...Melbourne, Parkville, VIC 3010 Australia ABSTRACT Lawsonite equilibria are predicted to occur over a broad...PāT spectrum developed during subduction, yet lawsonite-bearing assemblages are rare. In the context of...contents are demanded by lawsonite assemblages. As a consequence, lawsonite assemblages are predicted...predicted to have difļ¬culty forming and lawsonite equilibria to be uncommon. Metabasalt undergoing cooler subduction | | | Journal (article/letter/editorial) | eclogite facies mineral equilibria, Pam Peninsula, New Caledonia B. A. MARMO, 1 G. L. CLARKE 1 A N D...maps collected using eclogite samples from northern New Caledonia in order to determine the chemical composition...proportions and mineral textures observed in the New Caledonian eclogites can be closely modelled by progressively...assemblages. Keywords: eclogite; mineral equilibria; New Caledonia; NCFMASH; pseudosection. IN TROD UCTI ON Metamorphic...equilibrium-volume. In the New Caledonian eclogites, inclusions of lawsonite, chlorite or glaucophane, | | | Journal (article/letter/editorial) | evolution of peridotites and serpentinites of NE New Caledonia: prograde interaction between continental margin...ABSTRACT The PoueĢbo and Diahot terranes of NE New Caledonia mostly comprise eclogite to blueschist facies...been linked with the SW-directed obduction of the New Caledonian Ophiolite, an extensive ultramaļ¬c nappe...Serpentinite emplacement accompanied burial of the NE New Caledonian margin at T<500 C and P<16 kbar. The...rocks and ultramaļ¬c masses suggest that NE New Caledonia preserves a fossil slab ā mantleāwedge boundary | | | Journal (article/letter/editorial) | record of high-pressure metasedimentary rocks of New Caledonia: Implications for regional tectonics of the...record of highpressure metasedimentary rocks of New Caledonia: Implications for regional tectonics of the...record of high-pressure metasedimentary rocks of New Caledonia: implications for regional tectonics of the...high-pressure metamorphic belt of CE Northern New Caledonia. We use these data to evaluate the sedimentary...eastwards and accumulated into the East RI New Caledonia Basin. Palaeozoic and Precambrian zircon grains | | | Journal (article/letter/editorial) | 1093/petrology/egg060 Lawsonite---Omphacite-Bearing Metabasites of the Pam Peninsula, NE New Caledonia: Evidence...deformed metasedimentary lithologies involving lawsonite--albite-bearing schists in the SW and omphacite--garnet-bearing...all rights reserved The Diahot terrane of NE New Caledonia contains an interbedded sequence of Cretaceous...tectonically disrupted crustal profile that extends from lawsonite---blueschist conditions in the SW to paragonite---eclogite...Diahot terrane contain M1 omphacite, chlorite, lawsonite and glaucophanebearing assemblages that partially | | | Journal (article/letter/editorial) | application to the PoueĢbo Terrane, Pam 2 3 2 2 Peninsula, New Caledonia C . J . C A R S O N1, R . POW EL...medium-T PoueĢbo terrane of the Pam Peninsula, northern New Caledonia includes barroisite- and glaucophane-bearing...words: CNFMASH; eclogites; H O availability; New Caledonia; pseudosections. 2 I NTR O D U CT I O N The...of GoĢmezPugnaire et al. (1997; Nerkau Complex, northern Urals) and Meyre et al. (1997; Adula Nappe, Central...metabasic eclogites of the PoueĢbo terrane, New Caledonia. As a basis for this, a quantitative petrogenetic | | | Journal (article/letter/editorial) | high-pressure/low-temperature schists, northern New Caledonia P. M. BLACKā, P. M A U R I Z O T 2 * ,...Auckland, New Zealand āBureau de Recherches Geologiques et Minier&, BP 56, Noumea, New Caledonia āDepartment...carpholite is widespread in the Diahot region of New Caledonia in highly aluminous schists and as veins in...schists of the Diahot basin, New Caledonia. The Diahot region is the northern part of a mid-Tertiary high-P...more than 170 km along the north-east coast of New Caledonia (Fig. 1). The metamorphic belt is separated | | | Journal (article/letter/editorial) | a reappraisal of the metamorphic evolution of lawsonite eclogite C. J. WEI1 AND G. L. CLARKE2 1 MOE Key...with THERMOCALC predict that lawsonite-bearing assemblages, including lawsonite eclogite, will be common...cool, ļ¬uid-saturated conditions. For glaucophaneālawsonite eclogite facies conditions (500ā600 C and 18ā28...system to contain glaucophane, garnet, omphacite, lawsonite, phengite and quartz, with chlorite at lower temperature...approaches indicate that most natural glaucophaneā lawsonite eclogites (Type-L) and glaucophaneāepidote eclogites | | | Journal (article/letter/editorial) | trace elements during prograde metamorphism from lawsonite blueschist to eclogite facies; implications for...high-pressure, low-temperature metamorphic rocks from New Caledonia. Samples examined include maļ¬c and pelitic rocktypes...rocktypes that range in grade from lawsonite blueschist to eclogite facies, and represent typical lithologies...lithologies of subducting crust. Under lawsonite blueschist facies conditions, the low temperatures of...most important hosts for trace-elements include lawsonite, (REE, Pb, Sr), titanite (REE, Nb, Ta), allanite | | | Journal (article/letter/editorial) | 20, 757ā768 Jadeiteāchloritoidāglaucophaneālawsonite blueschists in northwest Turkey: unusually high...metapelites with jadeite, chloritoid, glaucophane and lawsonite form a coherent regional metamorphic sequence...chloritoid + lawsonite. The associated metabasites are characterized by sodic amphibole + lawsonite Ā± garnet...coexistence of jadeite + chloritoid + glaucophane + lawsonite, not reported before, indicates metamorphic pressures...in the blueschist belts, particularly in the lawsoniteāblueschist facies, which covers a large PāT ļ¬eld | | | Journal (article/letter/editorial) | metabasite during exhumation, Diahot terrane, NE New Caledonia J.A. Fitzherberta,T, G.L. Clarkea, R. Powellb...High-P metabasites of the Diahot terrane, NE New Caledonia occur as spatially restricted (cm to km-scale)...disrupted metamorphic profiles in the transition from lawsonite blueschist in the SW to low-T eclogite in the...Metamorphic assemblages in the metabasites range from lawsoniteāomphaciteāglaucophane-bearing assemblages (Zone...Metasedimentary assemblages range from spessartineālawsoniteāalbiteā chlorite (Zone 1), through almandineā | | | Journal (article/letter/editorial) | com/locate/lithos High-pressure veins in eclogite from New Caledonia and their significance for fluid migration in...eclogite in the PouĆ©bo Eclogite Melange of northern New Caledonia. Isotopic and geochemical evidence indicates...Elsevier B.V. All rights reserved. Keywords: New Caledonia; Eclogite; Veins; Subduction; Fluid flow 1...the blueschistāeclogiteāfacies belt of northern New Caledonia. In this work, we outline the petrology...of the high-P belt of New Caledonia The north-eastern portion of New Caledonia consists of an extensive | | | Journal (article/letter/editorial) | eclogite regional deformation/metamorphism in New Caledonia, as indicated by progressively developed porphyroblast...Department of Geology, University of Auckland, Auckland, New Zealand Abstract. The mid-Tertiary blueschists,... eclogites and eclogitic gneisses of northern New Caledonia are the products of four phases of regional...metamorphism and deformation (D,--D4).Omphacite, lawsonite and Mn-rich garnet isogradic surfaces were developed...eclogites; isogradic surfaces; lawsonite; microstructures; New Caledonia; omphacite INTRODUCTION Regional | | 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) | stability of low-density hydrous minerals, such as lawsonite, chlorite, glaucophane and talc. Along a cold...subduction PāT path with a geotherm of ~6 Ā°C km 1, lawsonite is always present at 1.1 to >4.0 GPa, and chlorite...the PāT path is outside the stability field of lawsonite, and the hydrous minerals of chlorite, epidote...HPāUHP hydrous minerals, such as glaucophane, lawsonite, paragonite, phengite, talc and chloritoid. Their...oceanic eclogites commonly contain lawsonite or pseudomorphs after lawsonite. They have a typical peak mineral | | Brown, Julie L, Dyer, Sabastien C, Mungall, James E, Christy, Andrew G, Ellis, David J (2020) High-pressure CuāFeāS Phase Equilibria: some Experimental and Thermodynamic Constraints on Sulfides in Subduction Zones and the Lithospheric Mantle. Journal of Petrology, 61 (4) doi:10.1093/petrology/egaa043 | Journal (article/letter/editorial) | GPa, and pyrite Ć¾ bornite at 19 GPa, observed in New Caledonian rocks, is precluded by tie-lines between...reaction between 10 and 17 GPa, being replaced by a new assemblage of bornite, pyrite, and pyrrhotite. Our...covellite inclusions were trapped within lawsonite in lawsonite blueschist at 10 GPa; 2. covellite was...covellite within inclusions that were trapped in lawsonite that crystallized and equilibrated at 10 GPa...Location map of the high-pressure belt in northern New Caledonia showing the positions of silicate isograds | | | Journal (article/letter/editorial) | low-temperature recrystallization of zircon from New Caledonia, and their signiĆcance for trace element incorporation...phengite-epidote-chlorite schist from north-eastern New Caledonia contain as inclusions a mineral assemblage consisting...alteration event in the high-P belt of northeastern New Caledonia. The survival of this low-temperature mineral...inclusions in the altered zircon cores represent a new occurrence for these minerals and suggest that they...THORTVEITITE AND YTTRIALITE IN ZIRCON FROM NEW CALEDONIA In this paper, we report multiple episodes | | | Journal (article/letter/editorial) | insights from high-pressure mafic rocks from New Caledonia Carl Spandler a,*, JoĢrg Hermann b, Richard...blueschist and garnet amphibolite rocks from northern New Caledonia has been determined in order to geochemically...with equivalent igneous rocks from western New Caledonia demonstrates that the main chemical variations...All rights reserved. Keywords: Subduction; New Caledonia; Oceanic crust; Trace elements; Metamorphism;...eclogite-facies mafic rocks from northeastern New Caledonia. These rocks are part of an extensive high-P | | | Journal (article/letter/editorial) | The postTmax decompression is responsible for lawsonite decomposition, which results in epidote growth...Corsica (Caron & Pequignot, 1986) and Pam Peninsula in New Caledonia (Clarke et al., 1997). In many cases...Complex in Northern Urals (G omez-Pugnaire et al., 1997), Pam Peninsula in New Caledonia (Carson et...Turkey (Davis & Whitney, 2006) and Alpine Corsica in France (Vitale Brovarone et al., 2011), or occurs as interlayers...Switzerland (Barnicoat, 1988) and Alpine Corsica, France (Vitale Brovarone et al., 2011), eclogite is observed | | Spandler, Carl, Hermann, Jƶrg, Faure, Kevin, Mavrogenes, John A., Arculus, Richard J. (2008) The importance of talc and chlorite āhybridā rocks for volatile recycling through subduction zones; evidence from the high-pressure subduction mĆ©lange of New Caledonia. Contributions to Mineralogy and Petrology, 155 (2) 181-198 doi:10.1007/s00410-007-0236-2 | Journal (article/letter/editorial) | from the high-pressure subduction meĢlange of New Caledonia Carl Spandler Ć JoĢrg Hermann Ć Kevin Faure...devolatilization. The eclogite-facies meĢlange belt of northern New Caledonia represents previously subducted oceanic...Centre, GNS Science, 30 Gracefield Road, Lower Hutt, New Zealand J. A. Mavrogenes R. J. Arculus Department...quantities of volatiles in minerals such as amphibole, lawsonite, phengite, chlorite and epidote (Peacock 1993)...The blueschist to eclogite facies belt of northern New Caledonia is a classic example of an exhumed slab | | | Journal (article/letter/editorial) | Paragneisses between Yambe and Cape Colnett, New Caledonia by E. D. GHENT, 1 P. M. BLACK, 2 R. N. BROTHERS...35 km, in northeastern New Caledonia. Metamorphic grade ranges from lawsonite-albite schists through...northeastern New Caledonia. The metamorphic grade increases from southwest to northeast, from lawsonite-albite... University of Auckland, Private Bag, Auckland, New Zealand 628 E. D. GHENT ET AL. crystals. The...40km FIG. 1. Simplified geologic map of northern New Caledonia showing metamorphic isograds and prominent | | | Journal (article/letter/editorial) | high-pressure/lowtemperature vein system in eclogite from New Caledonia: insights into intraslab fluid flow processes...rocks of the PoueĢbo Eclogite Melange (northern New Caledonia) records the prograde blueschist-to-eclogite...geochronology Mass-balance calculations New Caledonia Communicated by Othmar MuĢntener. Electronic...of the PoueĢbo Eclogite MeĢlange (PEM), NE New Caledonia. This HP/LT meĢlange zone represents an excellent...transition in a subducting slab. Geological setting New Caledonia (Fig. 1), located in the south-western Pacific | | | Journal (article/letter/editorial) | metamorphic beltļ¼SB: Ota et al., 2004ļ¼and Guatemalan lawsonite eclogiteļ¼SMFZ: Tsujimori et al., 2006cļ¼are also...2003, Lawsonite growth in the epidote blueschists from the Ile de Groixļ¼Armorican Massif, Franceļ¼ :a potential... application to the PouĆ©bo Terrane, Pam Peninsula, New Caledonia. Jour. Metam. Geol., 17, 9-24. Carson...Powell, R., 2000, Hydration of eclogite, Pam Peninsula, New Caledonia. Jour. Metam. Geol., 18, 79-90. Clarke... Eclogites and blueschists of the Pam Peninsula, NE New Caledonia: a reappraisal. Jour. Petrol., 38, |
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