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#1Eclogite - an overview | ScienceDirect Topics
The U–Pb isochron age for multifaceted zircon grains separated from the eclogite is 2720.7±5.8 Ma (NORDSIM dating). This date has been accepted as the age of ...
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#2Eclogite - Metamorphic Rocks - Sandatlas
Width of view is about 15 cm. It is chiefly composed of red (garnet) and green (omphacite) minerals. Garnet in eclogite is usually iron-rich pyrope ...
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#3Eclogite - Wikipedia
Eclogite is a metamorphic rock containing garnet (almandine-pyrope) hosted in a matrix of sodium-rich pyroxene (omphacite).
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#4Grain size distribution of the short and the long axes of garnets ...
Grain size distribution of the short and the long axes of garnets from stream sediments of the 63-125 μm grain size fraction (upper part) and of the eclogite ...
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#5Eclogite resembling metamorphic disequilibrium assemblage ...
Compared to diopside, rounded to sub-rounded garnet grains are large in size (1 to 2 mm). Such garnet-plagioclase assemblage transforms to ...
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#6Lu–Hf geochronology of ultra-high-pressure eclogites from the ...
Laser ablation spot sizes were 44 and 58 µm, depending on the garnet grain size, and 12–13 spots per garnet profile were chosen manually to ...
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#7Rutile in eclogites as a mineral resource in the Sunnfjord ...
content over significant volumes of rock and favourable rutile grainsize. Eclogites in the Sunnfjord region are found in a number of elongated lenses up to ...
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#8Life-cycle analysis of coesite-bearing garnet - Cambridge ...
However, due to the increase of eclogitic garnet grains from the 63–125 µm to the 125–250 µm grain-size fraction, the geometric mean first ...
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#9tracing the exhumation of the Eclogite Zone (tauern Window ...
eclogite -facies metamorphic conditions retain their initial isotopic signature, ... coarse-grained boudinaged eclogites with a grain-size of up.
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#10Multiple Metamorphic Events Recorded within Eclogites of the ...
Most of Grt1porphyroblastic garnet in the eclogites is euhedral to subhedral grains with sizes up to 2 mm across. Fractures of the garnet are filled by ...
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#11Eclogite formation and the rheology, buoyancy, seismicity, and ...
basaltic rocks to garnet granulite and then eclogite involves the breakdown of plagioclase ... grain sizes, their data imply that 1 mm aragonite grains will ...
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#12geokniga-crystallographic-fabrics-omphacite-rutile-and-quartz ...
In this part, the grain sizes of omphacite and rutile are larger than in the surrounding matrix. ... the main eclogite-facies minerals and the stress mag-.
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#13The Engebøfjellet Eclogite, Sunnfjord - UiO - DUO
During the thesis field description, mineralogy and petrology of eclogite facies veins are done. Finding the abundance and grain size ...
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#14Abundance and Distribution of Diamonds in Eclogite Revealed
sample, eclogite 13-64-131 is dominated by rounded red-brown garnets up to 8 mm across, with lesser light-green clinopyroxene similar in grain size ...
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#15Retrograded eclogite-facies pseudotachylytes as deep-crustal ...
with grain size ranging from 0.5 to 1 cm (Kul- lerud, 1992, 1996). Although the mineralogy of the pseudotachylyte matrix, described in the.
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#16Full article: Petrology and geochemistry of eclogites from the ...
Major textural differences in eclogite are related to the intensity of foliation and lineation, and the grain size of garnet.
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#17Origin and orientation of microporosity in eclogites of different ...
duce from velocity changes that the grain size of the rock forming minerals controls the amount of microporosity. Also, the orientation of microporosity.
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#18Using Eclogite Retrogression to Track the Rapid Exhumation ...
lower pressure eclogite–amphibolite-facies conditions. (U–Pb titanite, rutile, ... tions attributed to the very small grain size. Zircons.
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#19Partial melting of deeply subducted eclogite from the Sulu ...
We report partial melting of an ultrahigh pressure eclogite in the ... The grain size of garnet decreases and the symplectite forms a ...
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#20Petrology of an eclogite-metarodingite suite at Cima di ...
subduction and eclogite facies metamorphism, then tectonic uprise to shallower depths, and ... The grain size of the princi- pal constituents is I to 2 mm, ...
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#21eclogite grain size的菜單和評價， 價格外帶和訂位
eclogite grain size 的菜單和評價，的和這樣回答，找eclogite grain size在的就來火鍋涮涮鍋推薦指南，有價格外帶和訂位.
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#22A.K._Engvik_et_al_screen.pdf - Norwegian Journal of Geology
coarsened in grain size. The mylonitic eclogite became mostly equigranular, with euhedral garnet in a matrix of well oriented omphacite, barroisite, ...
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#23Subduction interface processes recorded by eclogite-facies ...
These eclogites are characterized by a marked grain size reduction of omphacite down to. 5-10 µm and a relatively strong crystal preferred ...
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#24(PDF) Grain-size dependence of garnet composition revealed ...
In all grain-size fractions the heavy Garnet geochemistry mineral ... Stream sediments within and downstream of the Eclogite Zone show an increase of ...
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#25Reaction-enhanced formation of eclogite-facies shear zones ...
grain size during dynamic recrystallization, the foliation development in shear zones and the occurrence of new 'soft' and/or dense minerals changed the ...
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#26Petrology and metamorphism of glaucophane eclogites in ...
Using the Grt-Omp-Phn geothermobarometer, a peak eclogite facies metamorphic P-T condition of 3000–3270 MPa and 617–658°C was determined, which is typical of ...
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#27Late Miocene–Pliocene eclogite facies metamorphism, D ...
place under eclogite facies conditions. A requirement for measuring elemental concentrations of these grains was that grain size of the target mineral ...
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#28Strain geometry in Concepenido eclogites during widespread ...
grain size in both omphacite and garnet, garnets are more elongated and PT conditions were estimated to be slightly lower than in the bulk eclogite body.
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#29EUROPEAN SYNCHROTRON RADIATION FACILITY - ESRF
In situ deformation of eclogite compositions at high pressure. Experiment ... Grain size distribution of olivine and eclogitic clinopyroxene shows a peak.
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#30Kyanite eclogite thermobarometry and evidence for thrusting ...
The kyanite eclogites, containing the assemblage kyan- ite-garnet-omphacite-coesite (now ... igneous minerals are in various states of grain-size reduction.
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#31Complex chemical zoning in eclogite facies garnet reaction rims
The garnet reaction rims grew during the Cretaceous eclogite facies overprint. ... modelling that the spacing of the grain boundaries, i.e. the grain size ...
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#32Low temperature eclogite facies metamorphism in Western ...
Garnet occurred as poikiloblast with grain size between 0.1 mm and 4 mm, and omphacite, blue-amphibole, zoisite and paragonite enclaves inside (fig.
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#33XI International Eclogite Conference (IEC) Dominican Republic
and quartz (5 vol%). Garnets in this rock occur as euhedral coarse porphyroblasts with grain size ranging from 1.0 to 2.0 mm in diameter; ...
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#34Petrogenetic significance of the eclogites from the Arquía ...
Mineral abbreviations are after Kretz []. Rock samples were crushed in steel crushers and grinded in an agate mill to a grain size of <200 mesh. Major, trace ...
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#3535. deep crustal eclogite-facies pseudotaotywes - De Gruyter
The grain size of the host rock is 1 to 5 mm. Contacts between the veins and the granulite wall rock are sharp and typically subparallel to granulite ...
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#36The high-pressure to ultrahigh-pressure eclogite transition in ...
Relic coesite(s) ranging from 2 to 150 μm grain size has been identified by micro-Raman spectroscopy. Preservation of coesite varies considerably, ...
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#37Eclogite xenoliths from the Premier kimberlite, South Africa
A suite of mantle eclogite hosted within the Premier kimberlite on the Kaapvaal craton can be ... sampling bias given the coarse grain size and small.
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#3812th International Eclogite Conference High - Department of ...
“subduction signature” of many eclogite xenoliths actually resides in grain-boundary phases. Other work (Greau et al., 2011) shows that the common (and ...
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#39Garnet Growth in the Early Stage of Trachybasalt-Eclogite ...
The grain size was determined optically to be increased with increasing annealing time. The growth rate decreased with increasing grain size.
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#40An in situ SIMS perspective of the Raspas Complex (Ecuador)
from the rock by the time the slab equilibrates at eclogite facies conditions. ... nm) with realistic grain sizes (500 μm) to yield values of 9 × 10–12.
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#41Mantle eclogites and garnet pyroxenites
Clinopyroxenes have similar grain sizes as the garnets but they are generally less preserved. The preserved parts are recognizable as clear, ...
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#42Type I eclogites from Roberts Victor kimberlites - Géosciences ...
eclogites are closely similar to those of volatile-rich small-volume mantle melts in the ... clear grains of garnet and clinopyroxene were handpicked.
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#43Textures and mineral chemistry of retr - Zobodat
Eclogite facies rocks of the Penninic "Tauern Window" of the. Eastern Alps have been reported and ... Garnet grains are up to 1mm in size, idiomorphic, with.
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#44Garnet reequilibration and growth in the eclogite facies and ...
dine-enriched garnet rims: fractures act as new grain boundaries where granulitic garnets react. If fractures-filling minerals are typical eclogite-facies.
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#45Granoblastic texture - ALEX STREKEISEN
The minerals do not show a strong tendency to develop their characteristic crystal shape, but are equant, with fairly uniform grain size and straight or ...
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#46Integrating X-Ray Computed Tomography With Chemical ...
Relative mineral percentages, their grain size distribution, ... The alpine eclogite-facies peak has been dated between 90 and 65 Ma ...
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#47Effects of Lattice Preferred Orientation and Retrogression on ...
ited amount of quartz grains in the eclogite so that we ... area lower hemisphere projection with half width of 20º and cluster size of 5º.
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#48Conditions and timing of high-pressure Variscan ...
Keywords: Eclogite; Garnet peridotite; Sm–Nd geochronology; Variscan; South Carpathians ... a jaw crusher to about 1/3 of their average grain size.
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#49Evidence of a Temperature-dependent 'Blueschist' to 'Eclogite ...
The schistosity in the gneissic metabasites is defined by a polygonal, well annealed glaucophane fabric forming 30-70 per cent of the rock. Grain size is ...
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#50sajeev_pcr_09.pdf
suture zone suggest that the eclogite facies metamorphism was related to formation of the suture zone. ... The porphyroblast grain size varies from.
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#51Morphological stability of hydrous liquid droplets at grain ...
We measured the dihedral angles in the eclogite–H2O system at a ... GPa when the grain size of garnet was equal to that of clinopyroxene.
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#52Abundance and Distribution of Diamonds in Eclogite ...
A diamond-bearing eclogite has been studied using industrial high-energy computed tomography and volume visual- ... grain size, but extensively altered.
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#53Distribution of First Row Transition Elements in Eclogites
Type 1 is the most commonly occurring and is identifiable by its dark color, fine grain size, and compositional banding of garnet and omphacite. Type 2 is less ...
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#54Types of Metamorphism
... if the grain size is small, and a granulite, if the grain size is ... amphibolite, and eclogite facies as the grade of metamorphism (or ...
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#55COMPLEX GARNET ZONING FROM LAWSONITE ECLOGITE ...
The overall variability of chemical zoning between eclogite ... analyses and garnet grain size distribution of lawsonite eclogite samples from the south ...
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#56CO Meeting Organizer EGU2020
To better understand the onset of strain localization in eclogite, ... A reduction in grain size and an increase in density of low-angle ...
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#57Norwegian orthopyroxene eclogites
Norwegian orthopyroxene eclogites: petrogenesis and ... transport, grain size, mineral nucleation and growth, the degree of reaction.
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#58Properties of Eclogite | Physical | Thermal - Compare Rocks
There are various physical properties of Eclogite like Hardness, Grain Size, Fracture, Streak, Porosity, Luster, Strength etc which defines it.
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#59What is eclogite made of? - Restaurantnorman.com
What is the relationship between basalt and eclogite? ... Pettijohn (1975) gives the following descriptive terms based on grain size, ...
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#60eclogite | rock - Encyclopedia Britannica
In the crust, eclogites generally occur as xenoliths (i.e., foreign inclusions) in igneous rocks and as isolated blocks measuring as much as 100 m (328 feet) ...
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#61Eclogite-Rock-Geology-Specimen-Mineral-China Neolithic ...
Eclogite. Classification：Metamorphic Rock. Eclogites are mainly composed of garnet ... They are mostly medium coarse grain, granular texture and massive ...
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#62Eclogite
Eclogite. Eclogite is a dense, green plutonic rock composed of coarse grains of green, sodium-rich pyroxene (omphacite) and pale pink, magnesium rich garnet ...
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#63The types of rock: igneous, metamorphic and sedimentary
These rocks are further classified by the size and composition of the ... it's a rock made from many-sand-sized minerals and rock grains.
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#64a case study in the SÂnie˙znik Mts. (West Sudetes, Pola
fluid regimes of granulite- and eclogite-facies rocks is supported by recent studies in the ... eclogite domains where volume diffusion and thus grain.
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#65Eclogite petrography
A set of thin section images, all at the same scale (1.5 x 1 cm) showing the range of textures to be found in metabasic eclogites from ...
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#66Grain Sizes of Clastic Sedimentary Rocks - YouTube
In this minivideo we identify the four size categories for the sediment that will contribute to clastic sedimentary rocks.
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#67Eclogite - chemeurope.com
Eclogite Eclogite (pronounced /ˈɛklədʒaɪt/) is a coarse-grained mafic (basaltic in composition) metamorphic rock. Eclogite is of special interest.
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#68Name a coarse-grained igneous rock composed mainly of ...
... 90% of the volume of the rock are classified as ultramafic rocks. ... Eclogite, a rock similar to basalt in composition, is composed ...
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#69The eclogite engine - CalTech Authors
The fact that conditions in the upper mantle can readily convert eclogite to magma to basalt, and back, with enormous density changes, is crucial in global ...
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#70The Andes: Active Subduction Orogeny - 第 500 頁 - Google 圖書結果
The bulk viscosity of eclogite could be further decreased owing to textural changes during transformation, such as grain size reduction.
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#71The China Continental Scientific Drilling Project: CCSD-1 ...
... mainly medium grain size, compact crystillite and very high hardness, being difficult to be penetrated, while coarse grain sized eclogite and rich ...
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#72Recent Advancements in X-Ray and Neutron Imaging of Dynamic ...
Relative mineral percentages, their grain size distribution, grain ... static eclogite-facies re-equilibration occurred during the alpine evolution.
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#73Ultrahigh-pressure Metamorphism: Deep Continental Subduction
More than 90% of the eclogite bodies occur as lenses and layers in gneiss; ... (1) Samples of 1–2 kg were crushed and sieved to small grain size.
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#74RPSC-Rajasthan Junior Hydro-Geologist Exam: Geology Subject ...
______ describes the distribution of grain size of sediments, ... (A) Eclogite-Granulite (B) Granulite –Blueshist (C) Greenshist-Amphibole (D) ...
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#75Geology Word of the Week: E is for Eclogite - Georneys - AGU ...
Eclogites form when mafic rock encounters temperatures greater than ~400 degrees Celsius and pressures greater than ~12 kbar (or ~1.2 GPa).
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#76Deformation Microstructures and Mechanisms in Minerals and Rocks
Experimental study of grain-size sensitive flow of hot-pressed calcite rocks. ... Coesite-bearing eclogite from the Dabie Mountains in central China.
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#77Geodynamics of a Cordilleran Orogenic System: The Central ...
A hypothetical eclogite foundering event in the eastern Altiplano region during middle Miocene to Pliocene time was synchronous with increased grain size ...
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#78Eclogite: Mineral information, data and localities. - Mindat.org
A high P/T metamorphic rock composed of more than 75% vol. garnet (often pyrope or Mg-rich almandine) and omphacite (Na-Ca-Al-Mg clinopyroxene).
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