 | | Journal (issue) | | without permission from the publishers Printed in Germany Printer: Paul Christian KG., Horb am Neckar Contents...Eastern Bavaria; by H. STRUNZ V 1 Excursion A 2: Eclogites of the Miinchberg Mass, NE Bavaria; byS....Eastern Bavaria; by J. PFEUFER 71 Excursion B 2: Fluorite deposits and pegmatites in Eastern Bavaria I....the area of Pleystein-Hagendorf/North Eastern Bavaria; by A. FORSTER and R. Ku.t>mER . . . . . . . ....OTTO. 89 Excursion B 4: Ries meteorite crater, Germany I. The Ries structure and its impact formations; |  | 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) | | Universität Potsdam, Postfach 601553, D-14415 Potsdam, Germany
ABSTRACT
New petrographic evidence and a review...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...Cover units (para-autochthon, lower,
middle and upper allochtrons)
Basement gneisses, mangerite and
anorthosite...Hornelen
Ultramafic bodies: GU - garnetiferous
Eclogite with prograde zoned garnets
and no evidence for |  | 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) | | Wilhelms-Universität, Corrensstrasse 24, D-48149 Münster, Germany
(m.a.smit@uni-muenster.de)
ABSTRACT
Eclogites...interstitially between phases of the eclogite facies assemblage: garnet + omphacite + zoisite + clinozoisite +...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 |  | | Journal (article/letter/editorial) | | Electrical conductivity of OH‑bearing omphacite and garnet
in eclogite: the quantitative dependence on water...© Springer-Verlag GmbH Germany, part of Springer Nature 2019
Abstract
Eclogite is potentially an important...deep crust and upper mantle. The electrical conductivity
of omphacite and garnet in eclogite has been measured...the experimental
runs. The conductivity of both omphacite and garnet increases with temperature, and the...the activation enthalpy is ~ 82 kJ/mol
for omphacite and 90 kJ/mol for garnet, which is nearly independent |  | 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
geochemical recycling between crust and deep upper
mantle, and tectonic processes responsible for growth...investigation of devolatilization processes in the upper mantle. One fertile, but so
far neglected avenue...and III), quartz-eclogite (Unit III) and coesiteeclogite facies to diamond-eclogite facies (Unit II) |  | | Report (article/chapter) | |
Glaucophane and barroisite eclogites from the Upper Kaghan nappe:
implications for the metamorphic history...glaucophane- and barroisite-bearing eclogites from the Upper Kaghan nappe in the Higher
Himalayan Crystallines...garnet-omphacite-phengite-quartz-rutile eclogites previously described elsewhere in the Upper Kaghan...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 |  | | Journal (article/letter/editorial) | | Schulte · P. Blümel
Metamorphic evolution of eclogite and associated garnet-mica schist
in the high-pressure...interlayered with metabasic garnet–omphacite schists and
enclose eclogite boudins in the high-pressure metamorphic.... The
Fe/Mg distributions between garnet rim–omphacite and
garnet rim–phengite pairs indicate different...for the eclogite boudin, an intermediate temperature (630°C, >1.7 GPa) for the foliated
eclogite and the...Darmstadt,
Schnittspahnstrasse 9, D-64287 Darmstadt, Germany
Fax: +06151 166539
e-mail: schulte@hrz1.hrz.th-darmstadt |  | 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...coesite within an eclogite in the WGR. This coesite is preserved (armoured
within omphacite in turn enclosed...Figure 1-1) within a small, partly retrograded,
eclogite pod at Grytting, near Selje, in the SW part of |  | | Journal (article/letter/editorial) | | experiment”, Ruhr-University, D-44780 Bochum, Germany
Accepted 9 April 1997
Abstract
The metamorphic...uplift from depths of more than
100 km into the upper crust. If such data were
correct, the P-T path and...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 |  | 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...the Pohorje Mountains. The presence of
garnet, omphacite and quartz inclusions in unfractured
zircon indicates |  | 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 |  | 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) | | reversed fractionations between omphacite and
garnet in some eclogite samples. The d18 O values of y4...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 |  | | Journal (article/letter/editorial) | | textural variety of eclogite characterized by a two-fold occurrence of omphacite -- as older
microlites...determined by electron microprobe spot analysis.
All omphacite analyses of both porphyroblasts and microlites...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...increase in PH20 (eclogite facies).
(3) Post-eclogite stage, when the garnet--omphacite association ceased |  | | 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) | | 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) | | 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;...unit) (Bulgatov, 1983) and the Dzhaltuk series (upper unit) (Mitrofanov, 1978), intruded
CE
by anatectic |  | | Thesis/Dissertation | | ultrahigh-pressure (UHP) terranes in the North-East Greenland Eclogite Province, aiming to decipher their metamorphic...peak mineral assemblage of phengite, garnet, omphacite, kyanite, coesite, rutile and probably epidote-group...thermodynamic modeling of a symplectite after omphacite, consisting of amphibole, plagioclase and clinopyroxene...phases along the exhumation path. The HP kyanite eclogite from the Danmarkshavn area contains disequilibrium...parts of the Earth. This dissertation examines eclogite from NorthEast Greenland, where eclogites is a |  | Sheng, Ying-Ming, Xia, Qun-Ke, Dallai, Luigi, Yang, Xiao-Zhi, Hao, Yan-Tao (2007) H2O contents and D/H ratios of nominally anhydrous minerals from ultrahigh-pressure eclogites of the Dabie orogen, eastern China. Geochimica et Cosmochimica Acta, 71 (8) 2079-2103 doi:10.1016/j.gca.2007.01.018 | Journal (article/letter/editorial) | | available online 30 January 2007
Abstract
Garnet and omphacite from ultrahigh-pressure eclogites from the Dabie...MicroFTIR. The results show that all garnet and omphacite grains contain structural water occurring as hydroxyl...than that retained in
hydrous phases occurring in upper mantle domains. However, garnet and clinopyroxene...were recently investigated in garnet,
rutile and omphacite minerals from Kokchetav eclogites
(Katayama and...water were detected (up to 870 ppm H2O wt in
omphacite and 1735 ppm H2O wt in garnet).
In this paper |  | | 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...thus attainment of isotopic equilibrium in the
omphacite– garnet O system suggests achievement of Nd isotope...pairs. The
presence or absence of fluid in the eclogite protoliths is a major rate-controlling factor...disequilibrium has been often observed between garnet and omphacite, resulting in geologically meaningless isochron |  | Li, Xiaoli, Zhang, Lifei, Wei, Chunjing, Slabunov, Alexander I. (2015) Metamorphic PT path and zircon U–Pb dating of Archean eclogite association in Gridino complex, Belomorian province, Russia. Precambrian Research, 268. 74-96 doi:10.1016/j.precamres.2015.07.009 | Journal (article/letter/editorial) | | Metamorphic PT path and zircon U-Pb dating of
Archaean eclogite association in Gridino complex,
Belomorian province...Metamorphic
PT path and zircon U-Pb dating of Archaean eclogite association in Gridino
complex, Belomorian province...Belomorian eclogite;
3
We confirm the clock-wise metamorphic PT path of Belomorian eclogite assemblages;...assemblages;
4
Neoarchean age of Belomorian eclogite has been determined;
5
Subsequent high-temperature...reworking during the exhumation of Belomorian eclogite
6
assemblages has been suggested at Neoarchean; |  | | 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...plagioclase–spinel in kyanite; and diopside–plagioclase in omphacite. The microfractures are often arranged en echelon...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 |  | 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...fabric in the eclogite is defined by alternation of
garnet-rich (grs = 22–29 mol.%) and omphacite-rich (jd...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) | | indicate that distinct mantle sources
existed for the eclogite protoliths
1.3 Ma ago, and that enrichment
in...structural
development.
The sporadic
occurrence
of eclogite outcrops throughout
these complexes is a notable
feature...polyphase
structural and metamorphic history. The upper
unit, mainly metagraywackes
with amphibolitic
dykes...younger metamorphic
event, which affected both the upper and lower units, is recorded in a metagranitic
body...f 11 Ma; Paquette
et al., 1984). Moreover,
one eclogite (La
Richaudais) has been recently dated, yielding |  | | Journal (article/letter/editorial) | | clinopyroxene – plagioclase
intergrowths after omphacite, (ii) replacement of kyanite by corundum – plagioclase...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 |
|
Eclogite outcrops, Weißenstein, Stammbach, Hof District, Upper Franconia, Bavaria, Germany