amphibolite facies उदाहरण वाक्य
उदाहरण वाक्य
- The rocks have undergone several periods of regional metamorphism, to at least upper amphibolite facies, and there was a subsequent phase of retrograde metamorphism.
- If burial continues along Barrovian Sequence metamorphic trajectories, greenschist facies gives rise to amphibolite facies assemblages, dominated by amphibole and eventually to granulite facies.
- S1 schistosity is defined by hornblende and chlorite, and this mineralogical association suggests that the deformation occurred under upper greenschist to lower amphibolite facies conditions.
- Amphibolite facies conditions are experienced at temperatures in excess of 500 �C and pressures less than 1.2 GPa, well within the ductile deformation field.
- The original 20 30 m thick Homestake Formation, has been deformed and metamorphosed, resulting in upper greenschist facies of siderite-phyllite, and lower amphibolite facies of grunerite schists.
- At amphibolite facies, the diopside-in isograd is reached ( dependent on carbon dioxide partial pressure ) and metamorphic assemblages trend toward talc-pyroxene and eventually toward metamorphic olivine.
- It consists of Proterozoic orthogneisses and early Paleozoic sedimentary ( pelites, calcareous schists and marbles ) rocks that were metamorphosed at high grade during the Hercynian orogeny ( up to amphibolite facies ).
- The deposits show evidence of an Early Cretaceous, amphibolite facies event and a younger, mid-Cretaceous lower greenschist facies event which resulted from the accretion of the Yukon-Tanana Terrane.
- The now high-grade metamorphic rocks essentially the amphibolite facies with medium-pressure high-temperature conditions was reached-were originally deposited as flysch sequences along Gondwanas northern continental slope.
- The metamorphic grade increases gradually from the Prince Olav Coast ( amphibolite facies; eastern part of the LHC ) to the Soya Coast ( granulite facies; western part of the LHC ).