Metamorphites
The metamorphic rocks are derived from pre-existing sedimentary and magmatic rocks by mineralogical, chemical, and structural changes, essentially in the solid state, in response to marked changes in temperature and/or pressure (both hydrostatic and oriented), during deeper burial into deeper parts of the Earth´s crust. During these processes parallel orientation of newly formed minerals generally forms (schistosity). Hydrothermal metamorphism represents a special type, because it is related to the migration of solutions near ore veins. Contact metamorphism results from temperature effect near contact with magmatite bodies.
List of exhibitspararula - biotitická, jeden kus, vrtné jádro g7061pararula, sillimanit. - biotit, jeden kus g7062 pararula, jeden kus g7063 pararula, jeden kus g7177 amfibolit drobnozrnný, jeden kus g7180 hadec s Ni žilkami, jeden kus g7269 hadec s mastkem, tři kusy g7274 hadec zvětralý, pyropový, jeden kus g7276 Ni silikát v hadci /zvětralém/, jeden kus g7286 žulorula, jeden kus g7052 pararula - sillimanit-biotit., jeden kus g7054 žulorula - biotitická, jeden kus g7055 erlan, jeden kus g7056 pararula - biotit. kvarcitická, jeden kus g7058 hadec- zvětralý, jeden kus g7318 granulit tmavý, jeden kus g7320 amfibolit eklogitický, jeden kus g7323 prokřemenělý hadec, jeden kus g6585 čočka erlanu, jeden kus g6595 tmavý granulit se spinelem, jeden kus g6596 | ||
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Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]