 | | Journal (article/letter/editorial) | | Schulte · P. Blümel Metamorphic evolution of eclogite and associated garnet-mica schist in the high-pressure...metabasic garnet–omphacite schists and enclose eclogite boudins in the high-pressure metamorphic Maksyutov...for the eclogite boudin, an intermediate temperature (630°C, >1.7 GPa) for the foliated eclogite and the...the South Urals (49°N–56°N). The greenschist- to eclogite facies metamorphic Maksyutov Complex trends 180...(1977), for example, describes eight different eclogite varieties (Na-rich, Ti-rich, etc.) and Werner |  | 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. |  | | 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 |  | | 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...et al./Lithos metamorphic evolution. An early eclogite-facies metamorphism at ca. 500°C and 1.6 GPa,...the contacts between metasediments and larger eclogite bodies, and as metre sized lenses embedded in |  | | Journal (article/letter/editorial) | | rich in hydrous phases, formed along margins of eclogite lenses and along mesoscopic fracture systems....are from 1–50 cm thick, with adjacent wall-rock eclogite replaced by symplectites. At a low degree of reaction...Tibetan plateau is caused by transformation of eclogite to granulite in the crustal root zone. Such models...models assume that complete transformation to eclogite and back-reaction to granulite and amphibolite...Metamorphic Geology, Volume 17, Number 6, 1999 eclogite would not occur on a geological time scale unless |  | 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) | | that occur interstitially between phases of the eclogite facies assemblage: garnet + omphacite + zoisite...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 |  | Skublov, S. G., Balashov, Yu. A., Marin, Yu. B., Berezin, A. V., Mel’nik, A. E., Paderin, I. P. (2010) U-Pb age and geochemistry of zircons from Salma eclogites (Kuru-Vaara deposit, Belomorian Belt) Doklady Earth Sciences, 432 (2) 791-798 doi:10.1134/s1028334x10060188 | Journal (article/letter/editorial) | | 10.1134/S1028334X10060188 The possibility of eclogite formation in the Archean is currently considered...Archean eclogites (U–Pb age of zircons from the eclogite is 2721 ± 6 Ma) were originally discovered in...the Kola Peninsula. Later, numerous bodies of eclogitelike bodies as tectonic blocks of dif ferent...of eclogite metamorphism with ages of 2.82 and 2.72 Ma were distinguished for the Salma eclogite mainly...isotopes and zircon geochemistry from the same eclogite outcrops allowed the authors of [7] to reach a conclusion |  | | Report (chapter) | | deformation fabrics developed under blueschist and eclogite facies. Rosenbaum et al. (2002) similarly argued...Traditionally the best-preserved blueschist and eclogite outcrops are considered to lie in the northern part...riebeckitic amphibole that is eventually replaced by actinolite, as defining the boundary between the blueschist-facies...haloes of greenschist-facies minerals (chlorite, actinolite, albite). Although multiple cracking episodes...increasingly riebeckitic compositions and the growth of actinolite into extensional fractures. Extensional greenschist |  | | Journal (article/letter/editorial) | | Petrology and Mineralogy of Eclogite and Garnet Amphibolite from Puerto Cabello, Venezuela by BENJAMIN...of garnet-clinopyroxene (eclogite), garnet-clinopyroxeneamphibole (eclogite-amphibolite) and garnet-amphibole...the epidote-amphibolite facies. Occurrences of eclogite rocks usually are found to be xenoliths in kimberlite...blocks in migmatites and schists. The presence of eclogite metamorphosed in situ with rocks of obvious sedimentary...September 5, 2015 ABSTRACT Occurrences of eclogite, eclogite-amphibolite, and garnet amphibolite from |  | Zhang, Yong, Pan, Tong, Zhang, Aikui, He, Shuyue, Qian, Ye, Bai, Yongshan (2023) Spatial Relationship between Eclogite and Copper-Nickel Mineralization in East Kunlun, China. Minerals, 13 (3) 330 doi:10.3390/min13030330 | Journal (article/letter/editorial) | | minerals Article Spatial Relationship between Eclogite and Copper-Nickel Mineralization in East Kunlun...Qian, Y.; Bai, Y. Spatial Relationship between Eclogite and Copper-Nickel Mineralization in East Kunlun...between the Cu-Ni deposits and eclogite distribution. In this study, eclogite samples from the Xiarihamu...electron probe microanalysis (EPMA). Further, eclogite protolith properties, the formation environment...mechanism were also investigated. Geochemically, eclogite is rich in MgO and FeO and low in alkali and SiO2 |  | | Book (edition) | | . . . . . . . . . . . . . . . . . . . . . 9.8 Eclogite Facies Metamorphism . . . . . . . . . . . . ..... . . . . . . . . . . . . . . . . . . . 9.8.3 Eclogite Facies in Gabbroic Rocks . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . 10.3.4 Eclogite and Blueschist Facies Granitoids . . . . . . ...Introduction and General Aspects of Metamorphism Kyanite-eclogite from Verpeneset, Nordfjord, Norway. Omphacite...rocks in an extensional regime Typical Blueschist, eclogite, serpentinite, Slate, phyllite, schist, gneiss |  | | Journal (article/letter/editorial) | | Geol., 50: 201--222. A rare textural variety of eclogite characterized by a two-fold occurrence of omphacite...successive stages of metamorphic evolution: (1) Pre-eclogite stage, when the primary rocks developed the mineral...(greenschist facies). (2) Eclogite stage, when the rock gained typical eclogite mineral compositions as...unaccompanied by an increase in PH20 (eclogite facies). (3) Post-eclogite stage, when the garnet--omphacite...a fine-grained matrix of other minerals. This eclogite resembles megascopically carinthine-bearing 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 |  | Cooperdock, Emily H.G., Raia, Natalie H., Barnes, Jaime D., Stockli, Daniel F., Schwarzenbach, Esther M. (2018) Tectonic origin of serpentinites on Syros, Greece: Geochemical signatures of abyssal origin preserved in a HP/LT subduction complex. Lithos, 296. 352-364 doi:10.1016/j.lithos.2017.10.020 | Journal (article/letter/editorial) | | Kyser et al., 1999; Sakai et al., 1990; Skelton and Valley, 2000; Tzen-Fu et al., 1990). Unaltered peridotite...Greece. Syros is famous for its preservation of eclogite- and blueschist-facies rocks associated with serpentinites...serpentinites in multiple meta-ophiolitic outcrops (Katzir et al., 2007; Keiter et al., 2011; Ridley...hosts spectacularly preserved blueschist and eclogite outcrops, which place peak temperatures for HP-LT subduction...ophiolite exposure, including abundant serpentinite outcrops, is in northern Syros in the Kampos shear zone |  | | 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 |  | | Journal (article/letter/editorial) | | in the margins or strongly foliated domains of eclogite blocks due to fluid infiltration at P–T conditions...presented in the previous studies. Key words: eclogite; phase equilibrium; P–T path; western Dabieshan...Chinese Tianshan orogen (Wei et al., 2009b), and HP eclogite from the western Dabieshan (Lou et al., 2009)...eclogites yet. Since the discovery of coesite-bearing eclogite from the western Dabieshan terrane (Wang et al...petrography and mineralogy for the representative eclogite samples from the western Dabieshan terrane; (ii) |  | 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 |
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