 | | Journal (article/letter/editorial) | | Petrology of the nyb6ite-bearing eclogite in the Donghai area, Jiangsu Province, eastern China T . HIRAJIMA...Geology and Mineralogy, Kyoto University, Kyoto 606, Japan R. ZHANG, J. Ll AND B. CONG Institute of Geology...Nyb6ite occurs as porphyroblasts in the Jianchang eclogite in the Donghai area, northeastern Jiangsu Province...Province, eastern China. The Jianchang eclogite contains some inclusions of quartz after coesite in clinopyroxene...associated with jadeitic pyroxene in the Jianchang eclogite, although other porphyroblastic amphiboles in | | | Journal (article/letter/editorial) | | Petrology of the nyb6ite-bearing eclogite in the Donghai area, Jiangsu Province, eastern China T . HIRAJIMA...Geology and Mineralogy, Kyoto University, Kyoto 606, Japan R. ZHANG, J. Ll AND B. CONG Institute of Geology...Nyb6ite occurs as porphyroblasts in the Jianchang eclogite in the Donghai area, northeastern Jiangsu Province...Province, eastern China. The Jianchang eclogite contains some inclusions of quartz after coesite in clinopyroxene...associated with jadeitic pyroxene in the Jianchang eclogite, although other porphyroblastic amphiboles in |  | | Report (chapter) | | org/ at Université Laval on July 10, 2015 Glaucophane and barroisite eclogites from the Upper Kaghan...petrographical and mineral chemical study of glaucophane- and barroisite-bearing eclogites from the Upper...assemblage is garnet omphacite-rutile-quartz in glaucophane eclogite and garnet-omphacite-zoisiterutile _+kyanite..._+kyanite _+phengite _+ankerite in barroisite eclogite. Most samples contain a significant amount of amphibole...most samples, but in relatively Fe-rich eclogite it is glaucophane with significant Na in the A site, Ca |  | | Report (chapter) | | characterized in the Ansongo region by garnet– glaucophane– paragonite assemblages and eclogites of basaltic...and glaucophane-bearing eclogite, and 16 kbar at 600 + 50 8C for the Tin Hama phengite eclogite, values...reported from the two latter areas point to ferro-glaucophane and winchite compositions that are not symptomatic...metamorphism. We describe here the first occurrence of Precambrian glaucophane sensu stricto and glaucophanebearing...metapelites and quartz-schists, with the local occurrence of Mn-rich garnet in metapelites and of pale |  | | Journal (article/letter/editorial) | | range, 450–650 °C and 18–28 kbar: the stability of eclogite G. REBAY,1 R. POWELL2 AND J. F. A. DIENER3 1 Dipartimento...temperature eclogite (with T ¼ 600 °C) represents a significant part of the occurrences of eclogite in orogenic...orogenic belts. ÔTrueÕ eclogite, with, for example, garnet + omphacite >70%, is well represented in such...such an occurrence. Calculated phase equilibria in Na2O–CaO–K2O–FeO–MgO–Al2O3– SiO2–H2O–TiO2–O (NCKFMASHTO)...are used to see under what circumstances ÔtrueÕ eclogite is predicted to occur. The variables considered |  | KIENAST, J. R., LOMBARDO, B., BIINO, C., PINARDON, J. L. (1991) Petrology of very-high-pressure eclogitic rocks from the Brossasco-Isasca Complex, Dora-Maira Massif, Italian Western Alps. Journal of Metamorphic Geology, 9 (1) 19-34 doi:10.1111/j.1525-1314.1991.tb00502.x | Journal (article/letter/editorial) | | belong to type C. Garnet, sodic pyroxene and glaucophane are the major minerals in the sodic whiteschist...hornblende in the eclogites, but the most magnesian glaucophane yet described in the sodic whiteschist. Quartz...from the stability of the jadeite-pyrope garnet-glaucophane compatibility. As in the eclogites water activity...instead indicating a close similarity to some of the eclogite bodies occurring in the Adula nappe of the Central...Central Alps. An important corollary is that glaucophane stability, at least in Na- and Mg-rich compositions |  | Gray, David R, Hand, Martin, Mawby, Jo, Armstrong, Richard A, Miller, John McL, Gregory, Robert T (2004) Sm–Nd and Zircon U–Pb ages from garnet-bearing eclogites, NE Oman: constraints on High-P metamorphism. Earth and Planetary Science Letters, 222 (2) 407-422 doi:10.1016/j.epsl.2004.03.016 | Journal (article/letter/editorial) | | Abstract Poly-deformed and poly-metamorphosed glaucophane-eclogite mega-boudins beneath the Samail Ophiolite...– whole rock isochron data from garnet-bearing eclogite assemblages in the As Sifah subwindow in NE Oman...V. All rights reserved. Keywords: subduction; eclogite facies; Oman; Sm – Nd dating; U – Pb SHRIMP zircon...1. Introduction The presence of retrogressed glaucophane-eclogites as mega-boudins in structurally deformed... Older pre-ophiolite crystallisation ages for eclogite metamorphism of the margin rocks have been linked |  | | Journal (article/letter/editorial) | | region of the central Tauern Window, east of the Eclogite Zone. A four-stage metamorphic evolution has been...(stage I: chlorite, actinolite, plagioclase and glaucophane, paragonite, clinozoisite) are preserved mainly...(stage II) of garnet, omphacite, paragonite, glaucophane, (clino)zoisite, quartz and rutile ± phengite...570°C, slightly below those reported from the Eclogite Zone (around 600°C, 20 kbar). In several instances...occurred during uplift, apparently still within the eclogite facies (stage III). As it is impossible to reconcile |  | | Journal (article/letter/editorial) | | 1111/jmg.12089 Coexistence of garnet blueschist and eclogite in South Tianshan, NW China: dependence of P–T...cn) ABSTRACT Coexisting garnet blueschist and eclogite from the Chinese South Tianshan high-pressure...mineral assemblages involving garnet, omphacite, glaucophane, epidote, phengite, rutile/sphene, quartz and...paragonite. Eclogite assemblages generally contain omphacite >50 vol.% and a small amount of glaucophane (<5...vol.%), whereas blueschist assemblages have glaucophane over 30 vol.% with a small amount of omphacite |  | Carswell, D. A., Brueckner, H. K., Cuthbert, S. J., Mehta, K., O'Brien, P. J. (2003) The timing of stabilisation and the exhumation rate for ultra-high pressure rocks in the Western Gneiss Region of Norway. Journal of Metamorphic Geology, 21 (6) 601-612 doi:10.1046/j.1525-1314.2003.00467.x | Journal (article/letter/editorial) | | firstly amphibolite facies then quartz-stable, eclogite facies conditions. Currently, the best constrained...retain coesite inclusions) from the Hareidland eclogite. Exhumation must have followed shortly thereafter...garnetiferous Eclogite with prograde zoned garnets and no evidence for coesite. G = glaucophane Florø Eclogite...eclogites in the Sunnfjord area to the south, to glaucophane-free, quartz-stable, HP eclogites around Nordfjord...because up until then it was widely assumed that eclogite facies metamorphism in the WGR was a Precambrian |  | | Journal (article/letter/editorial) | | s ev i e r. c o m / l o c a t e / l i t h o s Eclogite from the ultrahigh-pressure metamorphic unit at...Cignana ransmission electron microscopy Coesite–eclogite Crystal defects Omphacite Amphibole a b s t r...metamorphism. We have studied the minerals of two eclogite samples from this unit using transmission electron...TEM-study we found omphacite, amphibole (barroisite, glaucophane, hornblende), clinozoisite, garnet, albite, and...deformation microstructures from the UHP Lago di Cignana eclogite and other HP occurrences, it is unlikely that |  | John, Timm, Scherer, Erik E., Schenk, Volker, Herms, Petra, Halama, Ralf, Garbe-Schönberg, Dieter (2010) Subducted seamounts in an eclogite-facies ophiolite sequence: the Andean Raspas Complex, SW Ecuador. Contributions to Mineralogy and Petrology, 159 (2) 265-284 doi:10.1007/s00410-009-0427-0 | Journal (article/letter/editorial) | | -0 ORIGINAL PAPER Subducted seamounts in an eclogite-facies ophiolite sequence: the Andean Raspas Complex...Lu–Hf ages of a blueschist, a metapelite, and an eclogite overlap at around 130 Ma and date high-pressure...exhibit seamount-like characteristics, and the eclogite-facies peridotites seem to represent depleted...Germany e-mail: timm.john@uni-muenster.de MORB-type eclogite, seamount-type blueschist, serpentinized peridotite...ophiolite Seamount subduction Blueschist Eclogite Serpentinite Slab dismembering Earthquakes |  | Stanek, Klaus P., Maresch, Walter V., Scherer, Erik, Krebs, Martin, Berndt, Jasper, Sergeev, Sergey S., Rodionov, Nikolay, Pfänder, Jörg, Hames, Willis E. (2019) Born in the Pacific and raised in the Caribbean: construction of the Escambray nappe stack, central Cuba. A review. European Journal of Mineralogy, 31 (1) 5-34 doi:10.1127/ejm/2019/0031-2795 | Journal (article/letter/editorial) | | in the Yayabo amphibolites and 25 kbar in the eclogite-bearing Gavilanes Unit. The diachronous timing...Hertwig et al., 2016). In the second type of occurrence (see Fig. 1a), the oceanic subduction-accretionary...serpentinized ultramafic rocks surrounding rare blocks of eclogite (e.g., Garcı́a-Casco et al., 2002), shown as the...Escambray Mountains expose the largest contiguous occurrence of metamorphic rocks along the northern Caribbean...Felicidad Formation (Somin & Millan, 1974; (2) Occurrence of jadeite-rich blueschists in the SSD (Somin |  | Bröcker, Michael, Fotoohi Rad, Gholamreza, Burgess, Ray, Theunissen, Stephanie, Paderin, Ilya, Rodionov, Nikolay, Salimi, Zohre (2013) New age constraints for the geodynamic evolution of the Sistan Suture Zone, eastern Iran. Lithos, 170. 17-34 doi:10.1016/j.lithos.2013.02.012 | Journal (article/letter/editorial) | | schists. Some mélange blocks were affected by eclogite-, blueschist- and/or epidote amphibolite-facies...epidote-biotite assemblage in an overprinted domain of an eclogite. Ion probe U\Pb zircon ages for two eclogites...m in size) blocks and lenses were affected by eclogite-, blueschist- and/or epidote amphibolite-facies...data of white mica and calcic amphibole from four eclogite and amphibolite facies samples indicated a considerable...blueschists and epidote amphibolites Major eclogite occurrence Orbitolina limestone (Lower Cretaceous) |  | | Book | | regular paired structure: a zone of high-pressure (glaucophane) metamorphism forms on the oceanic side, and...developed in the marginal areas of the Pacific Ocean in Japan, Kamchatka and the Koryak Mts. (Fig. 5), Alaska...these systems, and intracontinental zones of glaucophane metamorphism (e.g. the Urals, Tian-Shan, the...crystallinity degree of illite) ; and on the occurrence of mineral pairs which may show a variable composition...lawsonite-albite facies and part of the lawsonite-glaucophane facies. The lower boundary is given by the breakdown |  | Bukała, Michał, Klonowska, Iwona, Barnes, Christopher, Majka, Jarosław, Kośmińska, Karolina, Janák, Marian, Fassmer, Kathrin, Broman, Curt, Luptáková, Jarmila (2018) UHP metamorphism recorded by phengite eclogite from the Caledonides of northern Sweden:P-Tpath and tectonic implications. Journal of Metamorphic Geology, 36 (5) 547-566 doi:10.1111/jmg.12306 | Journal (article/letter/editorial) | | Article UHP metamorphism recorded by phengite eclogite from the Caledonides of northern Sweden: P-T path...conditions of their formation. Within the studied eclogite, clinopyroxene contains a high-Na core and two...three stages in the metamorphic evolution of the eclogite. Applied Quartz-in-Garnet (QuiG) geobarometry...stage) took place at 1.5-1.6 GPa and 620-660°C. The eclogite peak-pressure assemblage developed during the...respectively. The prograde metamorphic evolution of the eclogite is inferred from inclusions of epidote, amphibole |  | | Journal (article/letter/editorial) | | homepage: http://www.tandfonline.com/loi/tigr20 Eclogite varieties and petrotectonic evolution of the northern...Martens, Tatsuki Tsujimori & Juhn G. Liou (2016): Eclogite varieties and petrotectonic evolution of the northern...http://dx.doi.org/10.1080/00206814.2016.1245592 Eclogite varieties and petrotectonic evolution of the northern...Sendai, Japan ABSTRACT ARTICLE HISTORY Field and petrologic characteristics of two new eclogite localities...locality exposes a coherent body of retrogressed eclogite hundreds of metres long that is associated with |  | | Journal (article/letter/editorial) | | PrePub Article Early Variscan P-T evolution of an eclogite body and adjacent orthogneiss from the northern...uni-stuttgart.de rre ct ed pr oo f Abstract: An eclogite and its surrounding gneiss from the Malpica-Tuy...studied. In addition to garnet and omphacite, the eclogite contains barroisitic amphibole, quartz, phengite...for the bulk-rock compositions of the studied eclogite and gneiss, were contoured by isopleths of various...were derived. After an isothermal burial path the eclogite reached peak pressures of 22.5 kbar at 540°C. |  | Halama, Ralf, John, Timm, Herms, Petra, Hauff, Folkmar, Schenk, Volker (2011) A stable (Li, O) and radiogenic (Sr, Nd) isotope perspective on metasomatic processes in a subducting slab. Chemical Geology, 281 (3) 151-166 doi:10.1016/j.chemgeo.2010.12.001 | Journal (article/letter/editorial) | | December 2010 Editor: B. Bourdon Keywords: Subduction Eclogite Metasomatism Seafloor alteration Lithium isotopes...High-pressure (HP) minerals from this type of eclogite have highly variable oxygen isotope compositions...MORB-type rocks. Zoisite eclogites, the second eclogite type from the Raspas Complex, are characterized...(Fig. 1) and constitutes the only known eclogite occurrence among the Andean HP rocks (Arculus et al... and the El Toro Formation, which consists of eclogite-facies, serpentinized peridotites (Feininger, |  | Li, Xu-Ping, Yan, Ji-Yuan, Schertl, Hans-Peter, Kong, Fan-Mei, Xu, Hong (2014) Eclogite from the Qianliyan Island in the Yellow Sea: a missing link between the mainland of China and the Korean peninsula. European Journal of Mineralogy, 26 (6) 727-741 doi:10.1127/ejm/2014/0026-2403 | Journal (article/letter/editorial) | | DOI: 10.1127/ejm/2014/0026-2403 PrePub Article Eclogite from the Qianliyan Island in the Yellow Sea: a...South Yellow Sea of China, lenses and layers of eclogite and two-mica epidote–plagioclase gneiss occur...occur within granitic gneiss. From the eclogite, peak metamorphic conditions of 775 C, 2.6 GPa were defined...with high Si contents. During exhumation, the eclogite underwent different stages of retrogression, i...metamorphic terrane in South Korea. The occurrence of eclogite on the Qianliyan Island was only poorly |  | | Journal (article/letter/editorial) | | multiplicity faults in deformed omphacite from eclogite WOLFGANG FRIEDRICH MÜLLER1*, FRANK E. BRENKER2...Abstract: Deformed and recovered omphacite from an eclogite sample of the Lower Schist Cover of the Tauern...acting as slip planes is given. The frequent occurrence of CMFs in omphacite suggests that 1/2[011](010)...Tauern Window. 1. Introduction The rheology of eclogite plays a major role in subduction zones (see, e...their fabric and microstructural study of four eclogite samples representative of different strain types |  | | Journal (article/letter/editorial) | | interstitial copper mineralization. The only other eclogite occurrence recorded in Brazil, at Pouso Alegre, state...paper. The comparison with the only other eclogite occurrence known in Brazil (Hoppe et al., 1989), and...and with the cupriferous titanomagnetite ore occurrence at Serrote da Lage, state of Alagoas (Horbach and...geological setting. The Fazenda Boa Esperan~a-Bodoc6 occurrence Some lenses of metamorphosed mafic to ultramafic...lenses and bore holes but with only one large occurrence. Other types of ore are disseminated ores composed |  | | Journal (article/letter/editorial) | | evolution of the continental crust. I. The gabbro-eclogite transition revisited D.J. Ellisa and M.A.H. Maboko...evolution of the continental crust. I. The gabbro-eclogite transition revisited. In: D.D. van Reenen, C....55: 491-506. We report the first occurrence of retrograde eclogite shear zones cutting Proterozoic granulites...Shear, in which lower-temperature, fine-grained eclogite developed. This demonstrates that mafic rocks...thermodynamic stability field of eclogite without undergoing transformation to eclogite. We agree with Harte et |  | Di Vincenzo, G., Palmeri, R., Talarico, F., Andriessen, P.A.M., Ricci, G.A. (1997) Petrology and Geochronology of Eclogites from the Lanterman Range, Antarctica. Journal of Petrology, 38 (10) 1391-1417 doi:10.1093/petroj/38.10.1391 | Journal (article/letter/editorial) | | remains unconstrained. In the well-preserved eclogite samples the reaction textures testify to three...three main metamorphic stages: (1) an eclogite facies stage, (2) a medium-pressure amphibolite facies stage...data place both the formation and exhumation of eclogite within a convergent plate margin setting, thus...chronology; eclogite; high-pressure metamorphism; Ross Orogen INTRODUCTION Metabasites with eclogite assemblages...38 during the high-pressure event (the in situ eclogite model) or whether the mafic eclogites were tectonically |  | | Journal (article/letter/editorial) | | that xenoliths of garnet pyroxenite (also called eclogite) occurring in alkaline basalts are representative...of the total xenolith population) are of rare occurrence in the breccia. Very rare chamockite xenoliths...Garnet clinopyroxenite is preferred to fassaite eclogite (Lovering & White, 1969) as a name for the most...most common type in this suite since the term eclogite implies omphacitic(jadeite-rich) constituent clinopyroxenes...Volcano, Alaska (Foster et ah, 1966) and Itinomegata, Japan (Kuno, 1967; Aoki, 1971). These xenoliths appear |
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