Results 211 to 220 of about 704,528 (294)
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Lithos, 2001
Basic principles for the study of fluid inclusions in metamorphic rocks are reviewed and illustrated. A major problem relates to the number of inclusions, possibly formed on a wide range of P-T conditions, having also suffered, in most cases, extensive changes after initial trapping.
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Basic principles for the study of fluid inclusions in metamorphic rocks are reviewed and illustrated. A major problem relates to the number of inclusions, possibly formed on a wide range of P-T conditions, having also suffered, in most cases, extensive changes after initial trapping.
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Metamorphism of Ultramafic Rocks
1994Ultramafic rocks are magnesium silicate rocks that normally contain no felsic minerals or very little (
Kurt Bucher, Martin Frey
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Metamorphic Reactions in Carbonate Rocks [PDF]
, 1965 The metamorphism of quartz-bearing carbonate rocks provides interesting examples of metamorphic reactions. The occurence of siliceous dolomites and siliceous dolomitic limestones is very widespread, whereas that of magnesite-bearing sediments is much rarer.
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1974
Basalts and pyroxene-andesites comprise by far the largest amount of mafic rocks and greatly predominate over their plutonic equivalents. Basalts and andesites are widespread in most geosynclines in the forms of lava flows, pillow lavas, tuff layers, sills, and dykes.
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Basalts and pyroxene-andesites comprise by far the largest amount of mafic rocks and greatly predominate over their plutonic equivalents. Basalts and andesites are widespread in most geosynclines in the forms of lava flows, pillow lavas, tuff layers, sills, and dykes.
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Environmental science and pollution research international, 2022
Qihang Li +6 more
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Qihang Li +6 more
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Geochimica et Cosmochimica Acta, 1968
Abstract The concentration of Hg in the regionally metamorphosed politic schists, gabbroic rocks and in quartz, magnetite and hematite from metamorphosed iron formation rocks reported here ranged from tenths of ppb to tenths of ppm. The concentrations did not vary in a systematic way. However, in stepwise heating experiments the fraction of the total
G.W. Reed +3 more
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Abstract The concentration of Hg in the regionally metamorphosed politic schists, gabbroic rocks and in quartz, magnetite and hematite from metamorphosed iron formation rocks reported here ranged from tenths of ppb to tenths of ppm. The concentrations did not vary in a systematic way. However, in stepwise heating experiments the fraction of the total
G.W. Reed +3 more
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Rheological properties of combustion metamorphic rock slurry for coalfield fire prevention
Bulletin of Engineering Geology and the Environment, 2021Bobo Shi, Chen Chen, Peng Liu
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Metamorphic rocks of the mantle
1990In certain unusual geological environments rocks derived from the Earth’s mantle are found at the surface. They have come there in one of two ways, either by tectonic movements or by volcanic eruption. Many mantle rocks coming to the surface in either way can be recognized as metamorphic by their textures.
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Metamorphism of Pelitic Rocks (Metapelites) [PDF]
, 1994 Metapelites are probably the most distinguished family of metamorphic rocks. Typical metapelites include well-known metamorphic rocks such as, for example: chlorite-kyanite-schists, staurolite-garnet micaschists, chlori-toid-garnet micaschists, kyanite-staurolite schists, biotite-garnet-cordierite gneisses, sillimanite-biotite gneisses and ...
Martin Frey, Kurt Bucher
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Metamorphism of Quartzofeldspathic Rocks
2011Metamorphosed quartzofeldspathic rocks are derived from graywacke sandstone and siltstone (clastic sediments; Table 2.3), and granitoid protoliths such as granite, alkali-feldspar granite, granodiorite and tonalite (Table 2.3). They constitute the largest portion of the continental crust.
Rodney Grapes, Kurt Bucher
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