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Statements

Subject Item
dbr:Prehnite-pumpellyite_facies
rdf:type
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rdfs:label
葡萄石-绿纤石相 Prehnite-pumpellyite facies Prehniet-pumpellyietfacies
rdfs:comment
De prehniet-pumpellyiet-facies is een metamorfe facies die gekenmerkt wordt door een graad van metamorfose met iets hogere temperaturen en drukken (en diepte) dan de zeoliet-facies. De facies is genoemd naar de twee mineralen prehniet (een calcium-aluminium-fylosilicaat) en pumpellyiet (een sorosilicaat). The prehnite-pumpellyite facies is a metamorphic facies typical of subseafloor alteration of the oceanic crust around mid-ocean ridge spreading centres. It is a metamorphic grade transitional between zeolite facies and greenschist facies representing a temperature range of 250 to 350 °C and a pressure range of approximately two to seven kilobars. The mineral assemblage is dependent on host composition. 葡萄石-绿纤石相（英語：prehnite-pumpellyite facies）是海洋地殼在中洋脊擴張中心周圍的變質岩相。它是介於沸石相和綠片岩相之間的過渡變質產物，溫度範圍為 250 至 350 °C，壓力範圍約為 2 至 7 千巴。礦物組合取決於原岩組成。 * 鎂鐵質原岩：礦物組合是綠泥石、葡萄石、鈉長石、绿纤石和綠簾石。 * 超鎂鐵質原岩：礦物組合是蛇紋石、滑石、、透閃石和綠泥石。 * 泥質沉積原岩：礦物組合是石英、伊利石、鈉長石和綠泥石。 * 碳酸鹽沉積物原岩：礦物組合是方解石、白雲石、石英、粘土、滑石和白雲母。
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dbc:Metamorphic_petrology
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4212579
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1050127000
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dbr:Stilpnomelane dbr:Albite dbr:Talc dbr:Pumpellyite dbc:Metamorphic_petrology dbr:Dolomite_(mineral) dbr:Greenschist_facies dbr:Ultramafic dbr:Illite dbr:Metamorphism dbr:Epidote dbr:Prehnite dbr:Forsterite dbr:Mid-ocean_ridge dbr:Quartz dbr:Mafic dbr:Tremolite dbr:Serpentine_group dbr:Chlorite_group dbr:Calcite dbr:Clay_minerals dbr:Oceanic_crust dbr:Argillaceous_minerals dbr:Zeolite_facies dbr:Muscovite
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n10:33SZP wikidata:Q3303655 freebase:m.0bq7sw dbpedia-nl:Prehniet-pumpellyietfacies dbpedia-zh:葡萄石-绿纤石相
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dbo:abstract
De prehniet-pumpellyiet-facies is een metamorfe facies die gekenmerkt wordt door een graad van metamorfose met iets hogere temperaturen en drukken (en diepte) dan de zeoliet-facies. De facies is genoemd naar de twee mineralen prehniet (een calcium-aluminium-fylosilicaat) en pumpellyiet (een sorosilicaat). Zoals bij alle metamorfe facies wordt de prehniet-pumpellyiet-facies vastgesteld aan de hand van bepaalde mineralen die gewoonlijk middels onderzoek naar slijpplaatjes worden gedetermineerd. In metamorfe stollingsgesteenten, grauwackes en pelieten zijn de volgende mineraalsamenstellingen typerend voor de prehniet-pumpellyiet-facies: 葡萄石-绿纤石相（英語：prehnite-pumpellyite facies）是海洋地殼在中洋脊擴張中心周圍的變質岩相。它是介於沸石相和綠片岩相之間的過渡變質產物，溫度範圍為 250 至 350 °C，壓力範圍約為 2 至 7 千巴。礦物組合取決於原岩組成。 * 鎂鐵質原岩：礦物組合是綠泥石、葡萄石、鈉長石、绿纤石和綠簾石。 * 超鎂鐵質原岩：礦物組合是蛇紋石、滑石、、透閃石和綠泥石。 * 泥質沉積原岩：礦物組合是石英、伊利石、鈉長石和綠泥石。 * 碳酸鹽沉積物原岩：礦物組合是方解石、白雲石、石英、粘土、滑石和白雲母。 The prehnite-pumpellyite facies is a metamorphic facies typical of subseafloor alteration of the oceanic crust around mid-ocean ridge spreading centres. It is a metamorphic grade transitional between zeolite facies and greenschist facies representing a temperature range of 250 to 350 °C and a pressure range of approximately two to seven kilobars. The mineral assemblage is dependent on host composition. * In mafic rocks the assemblage is chlorite, prehnite, albite, pumpellyite and epidote. * In ultramafic rocks the assemblage is serpentine, talc, forsterite, tremolite and chlorite. * In argillaceous sedimentary rocks the assemblage is quartz, illite, albite, and stilpnomelane chlorite. * In carbonate sediments the assemblage is calcite, dolomite, quartz, clays, talc, and muscovite.
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dbr:Facies
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wikipedia-en:Prehnite-pumpellyite_facies?oldid=1050127000&ns=0
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wikipedia-en:Prehnite-pumpellyite_facies