ECLOGITE på italienska - OrdbokPro.se engelska-italienska

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This type of metamorphic rock is the name of highest-grade metamorphic facies. About Eclogite Hide 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). Both must be present and neither component more than 75% vol. Eclogite never contains plagioclase. Rutile, kyanite, and quartz are typically present.

Eclogite rock

[ ĕk ′lə-jīt′ ] A greenish, coarse-grained metamorphic rock consisting of pyroxene, quartz, and feldspar with large red garnet inclusions. Eclogites form under conditions of high pressure and moderate to high temperatures. Eclogite (Muenchberg Gneiss Massif; Early Ordovician protolith, about 480 Ma; Late Devonian metamorphism, about 365 Ma; Wissenstein, just south of Stammbach, Frankenwald Forest, Bavaria, southeast-central Germany) 2 (15074937706).jpg 1,129 × 763; 278 KB. 2018-12-15 · Eclogite facies rocks from the Western and Central Alps contain low concentrations of Cl, Br and I, indicating major halogen loss occurs at shallower depths of subduction. Fluorine concentrations are variable depending on lithology, and can be enriched within metabasalts and metasediments, relative to heavier halogens, suggesting that F is retained to sub-arc depths within the upper portions A coarse-grained greenish rock consisting primarily of garnet and sodic pyroxene, and often including quartz, kyanite, and rutile.

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Rutile, kyanite, and quartz are typically present. Discovery and brief history of eclogites Eclogite is a metamorphic rock that includes garnet crystals nestled in a bed of gray-green omphacite. Eclogite forms from high-pressure metamorphism of mafic igneous rocks mainly, basalt or gabbro as it plunges into the mantle in a subduction zone.

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The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. The mineral content of Eclogite rock includes Amphibole, Coesite, Corundum, Dolomite, Garnet, Kyanite, Lawsonite, Paragonite, Phengite, Pyroxene, Quartz, Rutile, Zoisite and The compound content of Eclogite rock includes Aluminium Oxide, NaCl, CaO, Carbon Dioxide, Iron(III) Oxide, Magnesium Carbonate, MgO, Sodium Oxide, Potassium, Sodium. The rock name eclogite was first used by R. J. Haüy in 1822 for a “fancy rock” composed mainly of two minerals “diallage and garnet accompanied accidentally by kyanite, quartz, epidote, and lamellar amphibole.” Eclogite.

That is, it originally started as something else and was transformed by heat and pressure. In the case of eclogite, the rock originally started as mafic basalt or gabbro (igneous rocks relatively low in silica) that formed as seafloor welling out from the spreading center of a fissure in an oceanic plate. About Eclogite Hide 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). Both must be present and neither component more than 75% vol.
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Eclogites consist primarily of green pyroxene (omphacite) and red garnet (pyrope), with small amounts of various other stable minerals— e.g., rutile. Eclogite is an unusually dense metamorphic rock, typically of basaltic composition, that represents a recorder and/or driving force for planetary-scale processes and evolution.

Samples of felsic gneisses, garnet amphibolites and one retrogressed eclogite were studied.
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Köp boken Eclogite Facies Rocks av D.A. Carswell (ISBN 9789401092654) hos Adlibris. Fri frakt.

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Pressure–temperature estimates on the Tjeliken eclogite : new

Eclogite is an unusually dense metamorphic rock, typically of basaltic composition, that represents a recorder and/or driving force for planetary-scale processes and evolution. Eclogite-facies metamorphic conditions encompass a wide range of pressure–temperature space from deep crustal to mantle depths, reflecting tectonic setting. Eclogite is an extreme metamorphic rock, formed by regional metamorphism of basalt rock under very high pressure and temperature.