 | Miller, Christine, Mundil, Roland, Thöni, Martin, Konzett, Jürgen (2005) Refining the timing of eclogite metamorphism: a geochemical, petrological, Sm-Nd and U-Pb case study from the Pohorje Mountains, Slovenia (Eastern Alps) Contributions to Mineralogy and Petrology, 150 (1) 70-84 doi:10.1007/s00410-005-0004-0 | Journal (article/letter/editorial) | | Thöni Jürgen Konzett Refining the timing of eclogite metamorphism: a geochemical, petrological, Sm-Nd...within the stability field of quartz. Metapelitic eclogite country rocks contain the assemblage garnet +...are in good agreement with results obtained from eclogite samples. The eclogites contain a single population...of 90.7±3.9 and 90.1±2.0 Ma (Nd: +8) for two eclogite samples. The agreement between U-Pb and Sm-Nd...University of Innsbruck, Innrain 52, A-6020 Innsbruck, Austria E-mail: Christine.Miller@uibk.ac.at R. Mundil Berkeley |  | | Journal (article/letter/editorial) | | University of Innsbruck, Innrain 52, A-6020 Innsbruck, Austria b CNR-Istituto di Geoscienze e Georisorse, Unità...University of Vienna, Althanstrasse 14, A-1090 Wien, Austria Received 20 April 2006; received in revised form...not changed significantly during the gabbro to eclogite transformation because trace elements are redistributed...in zoisite/clinozoisite (Sr, Pb, U, Th, LREE), apatite (Sr, Pb, REE), phengite (Cs, Rb, Ba), garnet (Y...Sc), rutile (Ti, Nb, Ta) and zircon (Zr, Hf ) at eclogite-facies conditions. Omphacite hosts most of the |  | Masago, H., Rumble, D., Ernst, W. G., Parkinson, C. D., Maruyama, S. (2003) Low delta18O eclogites from the Kokchetav massif, northern Kazakhstan. Journal of Metamorphic Geology, 21 (6) 579-587 doi:10.1046/j.1525-1314.2003.00465.x | Journal (article/letter/editorial) | | isotopic compositions are heterogeneous in samples of eclogite, even on an outcrop scale. Schists have rather...during subduction and UHP metamorphism. Key words: eclogite; Kokchetav massif; low d18O; whiteschist. INTRODUCTION...and III), quartz-eclogite (Unit III) and coesiteeclogite facies to diamond-eclogite facies (Unit II)...representative, relatively unretrograded eclogite, amphibolitized eclogite, whiteschist ⁄ metapelite and quartz...block-in-matrix relationships involving abundant lensoidal eclogite bodies enclosed in the enveloping metapelite. |  | | Report (chapter) | | garnet omphacite-rutile-quartz in glaucophane eclogite and garnet-omphacite-zoisiterutile _+kyanite _+phengite..._+phengite _+ankerite in barroisite eclogite. Most samples contain a significant amount of amphibole...barroisite in most samples, but in relatively Fe-rich eclogite it is glaucophane with significant Na in the A...evolution of the eclogite-bearing units of the Neelum valley just to the east of the Kaghan valley indicate that...that the eclogite occurrences of the Kaghan-Neelum area define an eclogite-bearing terrane of regional |  | | Journal (article/letter/editorial) | | und Petrographie, Innrain 52, A-6020 Innsbruck, Austria Received 30 July 2003; accepted 17 May 2004 Available...Elsevier B.V. All rights reserved. Keywords: Kyanite eclogite; Geochemistry; P – T conditions; Pohorje; Slovenia...and Thöni, 1995; Magetti et al., 1987) to the eclogite type locality Kor- and Saualpe in the East (Haüy...or even late Proterozoic (Manby et al., 1988) eclogite-facies event. The eclogites from the Pohorje Mountains...the southern extension of the Koralpe – Saualpe eclogite zone. The Pohorje eclogites were first described |  | Liu, Fulai, Xu, Zhiqin, Katayama, Ikuo, Yang, Jingsui, Maruyama, Shigenori, Liou, J.G (2001) Mineral inclusions in zircons of para- and orthogneiss from pre-pilot drillhole CCSD-PP1, Chinese Continental Scientific Drilling Project. Lithos, 59 (4) 199-215 doi:10.1016/s0024-4937(01)00064-0 | Journal (article/letter/editorial) | | ultramafic rock with minor intercalated layers of eclogite and phengite-bearing kyanite quartzite. All analyzed...inclusions in zircons separated from paragneiss, eclogite and phengite-bearing kyanite quartzite samples...paragneisses, phengitebearing kyanite quartzite and eclogite experienced widespread UHP metamorphism in the...Some geologists argue for tectonic emplacement of eclogite bodies into low-P orthogneisses (Smith, 1988;...some gneissic rocks and marble contain abundant eclogite layers and blocks. Many meter –kilometersize ultramafic |  | | Journal (article/letter/editorial) | | garnets in ultrahigh-pressure (UHP) metamorphic eclogite from Dabie, east-central China. Compositional...slab exhumation. Keywords: Atoll garnet, fluid, eclogite, Dabie INTRODUCTION Chemical zoning of metamorphic...in both normal and atoll-shaped garnets in an eclogite from the Dabie ultrahigh-pressure (UHP) metamorphic... 1120 CHENG ET AL.: ORIGIN OF ATOLL GARNETS IN ECLOGITE pressure metamorphic belt in the world, and is...atoll-shaped garnets have been found in several eclogite outcrops from Huangzhen throughout the Dabie (Castelli |  | | Journal (article/letter/editorial) | | S0016-7037(00)00801-8 Oxygen isotope equilibrium between eclogite minerals and its constraints on mineral Sm-Nd...systems of eclogite minerals. The omphacite– garnet pairs of oxygen isotope equilibrium at eclogite-facies...pairs. The presence or absence of fluid in the eclogite protoliths is a major rate-controlling factor...equilibrium conditions. 2. GEOLOGICAL SETTINGS The eclogite samples used in this study were collected from...gneisses, and schist, metagranite associated with the eclogite blocks (Wang et al., 1995). These observations |  | | Journal (article/letter/editorial) | | of the eclogite facies assemblage: garnet + omphacite + zoisite + clinozoisite + quartz + apatite + rutile...Pressure and temperature conditions for the main eclogite stage are estimated to be 2.3–2.8 GPa and 585–655...result, recognition of magnesite and aragonite in eclogite facies rocks has been used as an indicator for... The formation of aragonite is constrained to eclogite facies conditions, which implies that the studied...interpreting aragonite-magnesite associations in eclogite facies rocks as evidence for UHP metamorphic conditions |  | | Journal (article/letter/editorial) | | indicate that distinct mantle sources existed for the eclogite protoliths 1.3 Ma ago, and that enrichment in...basic-ultrabasic complex; Champtoceaux Complex (Lower Loire valley); Horst des Essarts (in the VendBe)]. [I = 2 =...complex; (2) the Champtoceaux Complex (Lower Loire valley); (3) the Horst des Essarts (in the Vendbe). These...structural development. The sporadic occurrence of eclogite outcrops throughout these complexes is a notable feature...f 11 Ma; Paquette et al., 1984). Moreover, one eclogite (La Richaudais) has been recently dated, yielding |  | Zheng, Yong-Fei, Fu, Bin, Xiao, Yilin, Li, Yiliang, Gong, Bing (1999) Hydrogen and oxygen isotope evidence for fluid–rock interactions in the stages of pre- and post-UHP metamorphism in the Dabie Mountains. Lithos, 46 (4) 677-693 doi:10.1016/s0024-4937(98)00090-5 | Journal (article/letter/editorial) | | fractionations between omphacite and garnet in some eclogite samples. The d18 O values of y4 to y1‰ for some...metamorphism. Heterogeneous d18 O values for the eclogite protoliths implies not only the varying degrees...Keywords: Stable isotope; Fluid–rock interaction; Eclogite; Metamorphism; Plate subduction; The Dabie Mountains...(1999) 677–693 Previous studies determined that eclogite and associated quartz–schist from Donghai in the...exchange has been presumed to occur between the eclogite protoliths and a fluid of meteoric origin before |  | Carswell, D. A, Krabbendam, M., Cuthbert, S. J., Eide, E. A, Brueckner, H. K., Medaris Jr, L. G (2003) Guidebook to the Field Excursions in the Nordfjord-Stadlandet-Almklovdalen Area. Norges Geologiske Undersøkelse. Rapport 2003.056. Norges Geologiske Undersøkelse (NGU) | Report (issue) | | conducted during the Alice Wain Memorial West Norway Eclogite Field Symposium held in Selje from June 21st-28th...high- and ultrahigh-pressure rocks. Keywords: Eclogite Gabbro Ultrahigh-pressure Peridotite Western...Microdiamond ALICE WAIN MEMORIAL WEST NORWAY ECLOGITE FIELD SYMPOSIUM JUNE 21st – 28th, 2003 in SELJE...spectroscopy, of an occurrence of coesite within an eclogite in the WGR. This coesite is preserved (armoured...Figure 1-1) within a small, partly retrograded, eclogite pod at Grytting, near Selje, in the SW part of |  | | Journal (article/letter/editorial) | | The rocks of the Zermatt-Saas zone reflect an eclogite-facies imprint of Late Cretaceous (loo-80 Ma;...Several authors have estimated the conditions of eclogite-facies metamorphism in the Zermatt-Saas zone (see...calibrated geothermobarometers in the past. The eclogite-facies mineral assemblages were partly re-equilibrated...exhumation path are provided by zircon (33 Ma) and apatite (12 Ma) fission-track ages which are similar for...et al./Lithos metamorphic evolution. An early eclogite-facies metamorphism at ca. 500°C and 1.6 GPa, |  | | Journal (article/letter/editorial) | | exceeding the crustal levels. CE Blueschist- and eclogite-bearing HP-UHP complexes formed at low thermal...combined with the abundance of Late Neoproterozoic eclogite-bearing complexes all over the ACCEPTED MANUSCRIPT...(N-MORB or E-MORB) affinity for most of the studied eclogite- IP and blueschist-bearing associations may...northeastern Transbaikalia (Russia), which are the oldest eclogite-facies rocks in the CAOB (Avchenko et. al., 1989;...Neoproterozoic (~760 Ma) age of crystallization of the eclogite-hosting granitic gneisses and nearly coeval age |  | | Book | | in b isolated outcrops or blocks at the surface of the Earth. Examples of such outcrops are the external...mountain-building. These isolated and patchily exposed outcrops or blocks make it difficult to understand the...metasediments, which was overprinted by high-pressure eclogite-grade metamorphism in the Silurian or Early Devonian...easily be traced further west into the Maderaner valley (Franks 1968, Schaltegger & Corfu 1995). However...Bietschhorn looking south-southeast across the Lötschen valley (Canton Valais, Switzerland). The contact between |  | | Book | | in b isolated outcrops or blocks at the surface of the Earth. Examples of such outcrops are the external...mountain-building. These isolated and patchily exposed outcrops or blocks make it difficult to understand the...metasediments, which was overprinted by high-pressure eclogite-grade metamorphism in the Silurian or Early Devonian...easily be traced further west into the Maderaner valley (Franks 1968, Schaltegger & Corfu 1995). However...Bietschhorn looking south-southeast across the Lötschen valley (Canton Valais, Switzerland). The contact between |  | | Journal (article/letter/editorial) | | oceanic suture. Only a small number of HP metabasite outcrops, have been described in the Central Iberian Zone...Galicia–Tras-os-Montes Zone). These metabasite outcrops appear as scattered boudins interbedded within...under high- to intermediate-pressure, close to eclogite-facies conditions (Barbero and Villaseca, 2000)...within the European Variscan orogen: a northernmost eclogite belt close to the main oceanic suture, and a younger...innermost array of HP metabasites and eclogite-facies outcrops formed during the thickening of these |  | Wang, Huining, Liu, Fulai, Li, Jing, Sun, Zaibo, Ji, Lei, Tian, Zhonghua, Liu, Lishuang, Santosh, M. (2019) Petrology, geochemistry andP–T–tpath of lawsonite‐bearing retrograded eclogites in the Changning–Menglian orogenic belt, southeast Tibetan Plateau. Journal of Metamorphic Geology, 37 (4) 439-478 doi:10.1111/jmg.12462 | Journal (article/letter/editorial) | | peak lawsonite‐eclogite facies (M2) at 24– 26 kbar and 520–530°C, post‐peak epidote–eclogite facies decompression...The magmatic zircon from both the retrograded eclogite and mafic schist yielded protolith ages of 451...contrast, metamorphic zircon from the retrograded eclogite samples yielded consistent Triassic metamorphic...belt, geochemistry, lawsonite-bearing retrograded eclogite, PalaeoTethys Ocean, P–T–t path 1 | INTRODUCTION...protolith characteristics of these retrograded eclogite outcrops have not yet been investigated in detail. |  | | Journal (article/letter/editorial) | | pairs yield about 820°C, and P > I 5 kb for the eclogite f:~cies metamorphism. J. Bernard-Criflfiths &... the existence of high pressure granulite and eclogite metamorphism is quite evident {Las~fier et ai...I + +h.~-+ 4÷÷ + ~ .÷ [A]: Localities of eclogite occurrences (shown by solid circles) in the...Diopside Fe Ca Mg Hypersthene Fe Mg Olivine I Fe Apatite limamte through successive mineral reactions suggests...indicates that the metamorphism has reached the eclogite/granulite facies. Moreover, high-P eclogitic rocks |  | ŠTÍPSKÁ, P., CHOPIN, F., SKRZYPEK, E., SCHULMANN, K., PITRA, P., LEXA, O., MARTELAT, J. E., BOLLINGER, C., ŽÁČKOVÁ, E. (2012) The juxtaposition of eclogite and mid-crustal rocks in the Orlica-Śnieżnik Dome, Bohemian Massif. Journal of Metamorphic Geology, 30 (2) 213-234 doi:10.1111/j.1525-1314.2011.00964.x | Journal (article/letter/editorial) | | 1111/j.1525-1314.2011.00964.x The juxtaposition of eclogite and mid-crustal rocks in the _ Orlica–Śnieznik...F-59655 Villeneuve d ÕAscq, France ABSTRACT Eclogite, felsic orthogneiss and garnet–staurolite metapelite...cleavage, S3, occur locally. The S1 fabric in the eclogite is defined by alternation of garnet-rich (grs =...folding are associated with retrogression of the eclogite under amphibolite facies conditions, and with...with their juxtaposition. The shared part of the eclogite and metapelite P–T paths during the development |  | | Journal (article/letter/editorial) | | complex to create and preserve blueschist and eclogite, reflecting a cooling Earth. There may be a drastic...time shows three peaked periods of blueschist/eclogite formation, at 80 to 130 Ma, 400 to 500 Ma, and...transgression correspond to extensive blueschist/eclogite facies events and those of worldwide major regression...regression to less active periods of blueschist/eclogite formation. This relationship suggests that more...exhumation of blueschist/eclogite belts. The periodic pattern of blueschist/ eclogite formation is similar |  | Guo, Shun, Chen, Yi, Ye, Kai, Su, Bin, Yang, Yueheng, Zhang, Lingmin, Liu, Jingbo, Mao, Qian (2015) Formation of multiple high-pressure veins in ultrahigh-pressure eclogite (Hualiangting, Dabie terrane, China): Fluid source, element transfer, and closed-system metamorphic veining. Chemical Geology, 417. 238-260 doi:10.1016/j.chemgeo.2015.10.006 | Journal (article/letter/editorial) | | multiple high-pressure veins in ultrahigh-pressure eclogite (Hualiangting, Dabie terrane, China): Fluid source...multiple high-pressure veins in ultrahigh-pressure eclogite (Hualiangting, Dabie terrane, China): Fluid source...multiple high-pressure veins in ultrahigh-pressure eclogite (Hualiangting, Dabie terrane, China): fluid source...kyanite-epidote-quartz (Ky-Ep-Qz) veins from the vein-eclogite boundary to the vein MA interior. Towards the...coesite-enclosing epidote, kyanite, and quartz in the eclogite systematically decrease, indicating an intensive |  | Cheng, Hao, Liu, Yumeng, Vervoort, Jeffrey D., Lu, Honghua (2015) Combined U-Pb, Lu-Hf, Sm-Nd and Ar-Ar multichronometric dating on the Bailang eclogite constrains the closure timing of the Paleo-Tethys Ocean in the Lhasa terrane, Tibet. Gondwana Research, 28 (4) 1482-1499 doi:10.1016/j.gr.2014.09.017 | Journal (article/letter/editorial) | | Ar-Ar multichronometric dating on the Bailang eclogite constrains the closure timing of the Paleo-Tethys...Editor: Z.M. Zhang Keywords: Lhasa terrane Tibet Eclogite Lu–Hf Subduction a b s t r a c t The Lhasa terrane...and plate suturing processes in this area. An eclogite from the Bailang, eastern Lhasa terrane, was investigated...thermobarometric calculations indicate that the Bailang eclogite equilibrated at peak P–T conditions of ~2.6 GPa...as the age of eclogite-facies metamorphism and the Lu–Hf age likely pre-dated the eclogite-facies metamorphism |  | Kim, Taehwan, Kim, Yoonsup, Cho, Moonsup, Lee, Jong Ik (2019) P–Tevolution and episodic zircon growth in barroisite eclogites of the Lanterman Range, northern Victoria Land, Antarctica. Journal of Metamorphic Geology, 37 (4) 509-537 doi:10.1111/jmg.12474 | Journal (article/letter/editorial) | | imaging of zircon grains separated from a barroisite eclogite revealed three distinct zones with bright rim...1. INTRODUCTION The worldwide occurrences of eclogite in suture zones are the product of high-P metamorphism...& Markley, 2015). However, prograde stages of eclogite-facies metamorphism, particularly This article...pseudosection modelling can be used to reproduce the eclogite-facies parageneses (e.g. Palin, Reuber, White...account. The timescale and prograde P–T path of eclogite-facies metamorphism are best elucidated for low- |  | | Journal (article/letter/editorial) | | com/locate/precamres Evolution history of the Neoproterozoic eclogite-bearing complex of the Muya dome (Central Asian...analyses were carried out on country rocks of the eclogite–gneiss complex of the North Muya dome in the Anamakit-Muya...closure and collision. In this context, studies of eclogite-bearing metamorphic complexes of orogenic belts...Star indicates the position of the North Muya eclogite–gneiss complex. Sm–Nd geochronology for eclogites...higher than 15 kbars and those for kyanite-bearing eclogite exceed 24 kbars (Shatsky et al., 2012). To resolve |
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