 | | Journal (article/letter/editorial) | | Netherlands ORIGIN OF ECLOGITES FROM SOUTH BRITTANY,FRANCE: A Sm-Nd ISOTOPICAND REE STUDY J. BERNARD-GRIFFITHS...for publication December 35042 Rennes Ce’dex (France) 12, 1984) Abstract Bernard-Griffiths, J. and...Cornichet, J., 1985. Origin of eclogites from south Brittany, isotopic and REE study. In: D.C. Smith and Ph...Chem. Geol. (Isot. Geosci. Sect.), 52: 185-201. France: A Sm-Nd Geochemistry and Rare-earth element (REE)...Armorican massif in the Hercynian fold-belt of western France. The REE distribution patterns suggest that: (1) |  | 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 |  | | Journal (article/letter/editorial) | | in Austria Petrologic Constraints for Eoalpine Eclogite Facies Metamorphism in the Austroalpine Otztal...retrograde reaction products. Retrogression of the eclogite parageneses reflecting decreasing pressure and...conditions are: Symplectites of diopside and plagioclase after omphacite, AI- and Na-poor green amphiboles...atoll textures and symplectites of biotite and plagioclase replacing phengite. Continuation of retrogression...Minimum pressure and temperature conditions of the eclogite stage derived from Jd-content in omphacite and |  | | Journal (article/letter/editorial) | | metagabbros and Cpx-bearing granulites. All the eclogite samples studied are formed of well-preserved HP...these eclogites are petrologically similar to the eclogite samples from the better known Běstvina Unit. Eclogites...preserve relict mineral assemblage from a pre-eclogite stage, enclosed in garnet with prograde zoning...kyanite eclogite from Úhrov (Medaris et al. 2006), 800–850 °C and 1.7–1.9 GPa for Spačice eclogite, 1160–1180...1160–1180 °C a 1.7–1.9 GPa for the quartz-rich eclogite, and 960 °C a 1.9 GPa for other eclogites. Faryad |  | Franceschelli, M., Eltrudis, A., Memmi, I., Palmeri, R., Carcangiu, G. (1998) Multi-stage metamorphic re-equilibration in eclogitic rocks from the Hercynian basement of NE Sardinia (Italy) Mineralogy and Petrology, 62 (3) 167-193 doi:10.1007/bf01178028 | Journal (article/letter/editorial) | | layers: garnet-pyroxene rich-layers and amphibole-plagioclase layers. The former contain structural, mineralogical...relics of eclogite facies re-equilibration. Four stages of evolution have been identified: an eclogite stage...amphibolite to greenschist stage. A possible pre(?)-eclogite stage is documented by inclusions of euhedral...followed by an increase in pressure under which the eclogite climax developed (T up to 700 °C, P = 13-15 kbar)...omphacite --+ diopside ÷ plagioclase (symplectite) and garnet --+ orthopyroxene ÷ plagioclase. These reactions |  | | 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 |  | Miller, C., Thöni, M., Konzett, J., Kurz, W., Schuster, R. (2005) Eclogites from the Koralpe and Saualpe type-localities, Eastern Alps, Austria. Mitteilungen der Österreichischen Mineralogischen Gesellschaft, 150. | Journal (article/letter/editorial) | | 590 °C at 250-270 Ma; HABLER & THÖNI, 2001), and eclogite facies (2.4 GPa and 650-730°C at approximately...pegmatite gneisses. Meter to kilometre-sized lenses of eclogite, eclogiteamphibolite and (meta)gabbros occur within...is also linked to the rapid exhumation of the eclogite bearing unit (KURZ & FRITZ, 2003). Subsequent...Na-poor clinopyroxene ± calcic amphibole and sodic plagioclase, (2) kyanite mantled by complex symplectites...Mg-staurolite, (3) symplectites of biotite + plagioclase after phengite, and (4) garnet replaced by a |  | | Journal (article/letter/editorial) | | TEXTURES IN ZIRCON GENERATED BY OCEAN-FLOOR AND ECLOGITE-FACIES METAMORPHISM: A CATHODOLUMINESCENCE AND...ocean-floor and the Eoalpine metamorphism, in eclogite-facies conditions, respectively. We contend that...star indicates the location of the Lugros eclogite outcrop from which the zircon crystals dated by SHRIMP...Alpine metamorphism in the MC developed under eclogite-facies conditions during the first Alpine metamorphic...rise to the Eo-alpine metamorphic event, in the eclogite-facies conditions (Puga et al. 2002a). A part |  | | Journal (article/letter/editorial) | | high-pressure fluids during retrograde metamorphism of eclogite-facies rocks ( Voltri Massif, Italian Western...by retrograde symplectites (clinopyroxene + plagioclase k amphibole); in such cases the fluid inclusions...re-equilibration of a fluid presumably trapped at eclogite-facies conditions. The inclusions kinetically...are retained in primary fluid inclusions within eclogite facies minerals crystallized in veins and in the...reaction kinetics (Rubie, 1990). Fluid inclusions in eclogite-facies rocks therefore represent an important |  | Chen, Zhongliang, Yuan, Feng, Li, Xiaohui, Wang, Xiang, Li, He, Wu, Bangcai, Chen, Yuheng (2022) Knowledge Extraction and Quality Inspection of Chinese Petrographic Description Texts with Complex Entities and Relations Using Machine Reading and Knowledge Graph: A Preliminary Research Study. Minerals, 12 (9) 1080 doi:10.3390/min12091080 | Journal (article/letter/editorial) | | gneiss, monzogranitic gneiss, granodioritic gneiss, eclogite, amphibolite, marble, quartz-muscovite schist...structure (片麻状构造) Quartz (石英), k-feldspar (钾长石), plagioclase (斜长石) Biotite (黑云母), muscovite (白云母) Zircon...(片麻状构造), massive structure (块状构造) Quartz (石英), plagioclase (斜长石), k-feldspar (钾长石) Biotite (黑云母), hornblende...(条纹状构造), banded structure (条带状构造) Quartz (石英), plagioclase (斜长石), k-feldspar (钾长石) Granitic gneiss (花岗质片麻岩)...the rock description text for a granitic gneiss outcrop is presented. The extracted rock entity name, structure |  | | Journal (article/letter/editorial) | | metamorphic belt, East China. Eclogite, gneiss, amphibolite (retrograded from eclogite), ultramafic rocks, and...amphibole, plagioclase, and biotite from various rocks in the depth range of 0–3,000 m (mainly eclogite and...an UHP terrain. Studies of layered rocks at the outcrop scale have demonstrated the important control of...peridotite and pyroxenite, and minor marble; abundant eclogite bodies occur as lenses, discontinuous layers,...retrograde granulite facies overprint after coesite–eclogite facies metamorphism has been recognized by Wang |  | | 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 |  | | Journal (article/letter/editorial) | | 21 April 2004 Springer-Verlag 2004 Abstract Eclogite occurs within the southern domain of the East...the 3,000-km-long Snowbird tectonic zone. The eclogite occurs in association with a variety of lower...history from 2.6 to 1.9 Ga. Temperatures of the eclogite facies metamorphism are constrained by garnet-clinopyroxene...orthopyroxene-plagioclase and pargasite-plagioclase. U-Pb IDTIMS zircon geochronology of the eclogite yields...0±0.3 Ma, which we interpret as the time of peak eclogite facies metamorphism. SHRIMP in situ analyses of |  | | Journal (article/letter/editorial) | | both d18O and dD. Grnets from coesite-bearing eclogite are as low as 211‰ (VSMOW) and rutiles are 215‰...were all subjected to metamorphism in the coesite-eclogite facies. Oxygen isotope fractionation between quartz...discovery of low 18O values at the First International Eclogite Workshop, Stanford University, in 1994 (Yui et...their ephemeral existence as a world’s record for eclogite, however. The isotopic geochemistry of Qinglongshan...NNE-SSW for several kilometers with outcrops of eclogite flanked by quartz-feldspar-amphibole gneiss to |  | Butler, J.P., Jamieson, R.A., Dunning, G.R., Pecha, M.E., Robinson, P., Steenkamp, H.M. (2018) Timing of metamorphism and exhumation in the Nordøyane ultra-high-pressure domain, Western Gneiss Region, Norway: New constraints from complementary CA-ID-TIMS and LA-MC-ICP-MS geochronology. Lithos, 310. 153-170 doi:10.1016/j.lithos.2018.04.006 | Journal (article/letter/editorial) | | (WGR) of Norway. The dated samples include T 4 eclogite bodies, 2 host-rock migmatites, and 2 cross-cutting...from the island of Harøya. Zircon from a coesite eclogite yielded an age of ca. 413 Ma, CR interpreted...in this sample. Zircon data from the other US eclogite bodies yielded metamorphic ages of ca. 413 Ma...with 413 Ma and 407 Ma ages are consistent with eclogite-facies AN crystallization. In all of the eclogites...western part of the area. Migmatites hosting the eclogite bodies yielded zircon core ages of ca. 1657–1591 |  | Kwon, Sanghoon, Sajeev, K., Mitra, Gautam, Park, Youngdo, Kim, Sung Won, Ryu, In-Chang (2009) Evidence for Permo-Triassic collision in Far East Asia: The Korean collisional orogen. Earth and Planetary Science Letters, 279 (3) 340-349 doi:10.1016/j.epsl.2009.01.016 | Journal (article/letter/editorial) | | 13 February 2009 Editor: R.W. Carlson Keywords: eclogite high-pressure granulite clockwise P–T path Imjingang...augite, amphibole, orthopyroxene, ilmenite and plagioclase and by a similar high-pressure assemblage with...absence of precise evidence of collision (e.g., eclogite and high-pressure rocks) as well as a general...of the Hongsung area, with the first discovered eclogite in the Korean Peninsula, has been claimed as a...peninsula; the Bibong eclogite [N 36° 29’ 17.6”, E 126° 44’ 44.6”], the Baekdong eclogite [N36° 33′ 29.5″ E |  | | Journal (article/letter/editorial) | | within eclogites. Transformation of gabbro into eclogite is documented in different stages ranging from...Typical eclogite parageneses are Grt + Omp + Zo + Ky + Qtz + Amp k Phe + Rut. The metapelitic eclogite host...Sm-Nd mineral isochrons (Pl-Cpx) for the gabbroic eclogite precursors give ages of between 247 + 16 and 255...L- 5, 101 + 7 and 109 + 8 Ma. The metapelitic eclogite host rocks (mica schists) yield Nd DM (depleted...Ma. Keywords: Sm-Nd mineral dating; Eclogite; Gabbro-eclogite transition; High-P metamorphism; Alpine |  | | Journal (article/letter/editorial) | | for the interpretation of controversial gneiss–eclogite relationships in other UHP metamorphic terrains...have tentatively defined as the Central Dabie UHP Eclogite-Bearing Terrane Žsee Fig. 1, and Carswell et al... which shows the regional extent of a coesite–eclogite facies unit within the dominant orthogneiss lithologies...1996. have published maps for the Shuanghe UHP eclogite locality that show the eclogites interlayered...and more marginal large patches of grey sodic plagioclase, some in turn containing slightly darker small |  | QIU, H.-N., WIJBRANS, J. R., BROUWER, F. M., YUN, J.-B., ZHAO, L.-H., XU, Y.-G. (2010) Amphibolite facies retrograde metamorphism of the Zhujiachong eclogite, SE Dabieshan: 40Ar/39Ar age constraints from argon extraction using UV-laser microprobe, in vacuo crushing and stepwise heating. Journal of Metamorphic Geology, 28 (5) 477-487 doi:10.1111/j.1525-1314.2010.00875.x | Journal (article/letter/editorial) | | facies retrograde metamorphism of the Zhujiachong eclogite, SE Dabieshan: 40Ar ⁄ 39Ar age constraints from...Amsterdam, The Netherlands ABSTRACT The Zhujiachong eclogite in the south-eastern Dabieshan ultra-high-P terrane...garnet-amphibolite mineral assemblages in most rocks in the outcrop. This study is focused on providing age constraints...symplectite matrix that formed during retrogression from eclogite pyroxene. Late stage hydrothermal activity leading...observed from thin-sections of the retrograded eclogite: phengite fi paragonite and amphibole in matrix |  | Berezin, A. V., Skublov, S. G., Marin, Yu. B., Mel’nik, A. E., Bogomolov, E. S. (2013) New occurrence of eclogite in the Belomorian mobile belt: Geology, metamorphic conditions, and isotope age. Doklady Earth Sciences, 448 (1) 43-53 doi:10.1134/s1028334x13010029 | Journal (article/letter/editorial) | | 1, pp. 64–75. GEOCHEMISTRY New Occurrence of Eclogite in the Belomorian Mobile Belt: Geology, Metamorphic...2012 DOI: 10.1134/S1028334X13010029 Finds of eclogitelike associations within the Belo morian mobile...Geochronology) in the 1950s. We discovered a number of new eclogite bodies on the islands of the Keretskii archipelago...pyroxene with a dependent portion of amphibole and plagioclase quite regularly. In addition to these minerals...texture together with plagioclase around larger prismatic grains. Plagioclase usually occurs in interstitials |  | | Journal (article/letter/editorial) | | porphyroblasts and kyanite-bearing quartz veins in eclogite. As lawsonite dehydration can facilitate evolution...dominated by formation of hornblendic amphibole and plagioclase with fluid infiltration. The lawsonite-absent...rights reserved. Accepted Article Keywords: UHP eclogite; phase equilibria; P–T path; Dabie orogen. INTRODUCTION...diamond-bearing eclogites from the south Dabie eclogite belt (Okay et al., 1989; Wang et al., 1989; Xu...739–866°C. Garnet peridotites in the south Dabie eclogite belt were also estimated to yield higher pressures |  | Yasumoto, Atsushi, Yoshida, Kenta, Kuwatani, Tatsu, Nakamura, Daisuke, Svojtka, Martin, Hirajima, Takao (2018) A rapid and precise quantitative electron probe chemical mapping technique and its application to an ultrahigh-pressure eclogite from the Moldanubian Zone of the Bohemian Massif (Nové Dvory, Czech Republic) American Mineralogist, 103 (10) 1690-1698 doi:10.2138/am-2018-6323ccby | Journal (article/letter/editorial) | | technique and its application to an ultrahigh-pressure eclogite from the Moldanubian Zone of the Bohemian Massif...bulk compositions within an ultrahigh-pressure eclogite from Nové Dvory, Czech Republic. The studied sample...sample is a garnet-rich bimineralic eclogite that includes a 3 mm thick pyroxene-rich layer. A mapped...intruded the eclogite. Keywords: Bohemian Massif, compositional map, electron probe, eclogite, pyroxenite...applied the proposed method to an ultrahigh-pressure eclogite collected from the Moldanubian Zone of the Bohemian |  | | Journal (article/letter/editorial) | | (Italy), serpentinized ultrama®tes host bodies of eclogite, metarodingite and Ti-clinohumite Ti-chondrodite-bearing...caused extensive chloritization of the igneous plagioclase. Survival of igneous ilmenite and augite and...convergence and in many instances recrystallized at eclogite-facies conditions (Droop et al. 1990). Geological...petrological background The Voltri Massif is a nappe of eclogite-facies meta-ophiolites and associated metasediments...dikelets studied belong to the Beigua unit and outcrop near the villages of Vara and Piampaludo (Fig. |  | Saktura, Wanchese M., Buckman, Solomon, Nutman, Allen P., Belousova, Elena A., Yan, Zhen, Aitchison, Jonathan C. (2017) Continental origin of the Gubaoquan eclogite and implications for evolution of the Beishan Orogen, Central Asian Orogenic Belt, NW China. Lithos, 294. 20-38 doi:10.1016/j.lithos.2017.10.004 | Journal (article/letter/editorial) | | Manuscript Continental origin of the Gubaoquan eclogite and implications for evolution of the Beishan...Aitchison , Continental origin of the Gubaoquan eclogite and implications for evolution of the Beishan...MANUSCRIPT Continental origin of the Gubaoquan eclogite and implications for evolution of the Beishan... WOLLONGONG NSW 2522, AUSTRALIA T Keywords: Eclogite; continental collision; Beishan; Central Asian...CR IP Zircon REE US Abstract The Gubaoquan eclogite occurs in the Paleozoic Beishan Orogen of NW China |  | Wang, Song-Jie, Wang, Lu, Brown, Michael, Johnson, Tim E., Piccoli, Philip M., Feng, Peng, Wang, Zhen-Long (2020) Petrogenesis of leucosome sheets in migmatitic UHP eclogites—Evolution from silicate-rich supercritical fluid to hydrous melt. Lithos, 360. 105442 doi:10.1016/j.lithos.2020.105442 | Journal (article/letter/editorial) | | Journal Pre-proof Abstract Recent studies of eclogite in the ultrahigh pressure (UHP) zone of the central...during exhumation from the metamorphic peak to HP eclogite facies conditions. This observation requires that...sheets in retrogressed and migmatitic of UHP eclogite in the central Sulu belt. The leucosomes have...formed a silicate-rich supercritical fluid in eclogite that evolved to a denser, 2 Journal Pre-proof...possibly by diffusive loss of water to the host eclogite. Infiltration of solute-rich supercritical fluid |
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