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 exhibitsfylit, jeden kus g6640krystalický vápenec, jeden kus g6641 rula, jeden kus g6643 pararula, jeden kus g6650 grafitický fylit, dva kusy g6654 krevelový kvarcit, jeden kus g6572 ortorula, jeden kus g6746 amfibolit, dva kusy g6755 kvarcit, jeden kus g6756 ortorula, jeden kus g6757 ortorula, jeden kus g6762 biotitický migmatit (xenolit), tři kusy g6957 dvojslídná rula (xenolit), dva kusy g6967 svor, kvarcitický sv. šedý, jeden kus g7028 svor, jeden kus g7031 rula - cordieritická, jeden kus g7033 rula - polohy v krystaliniku, jeden kus g7298 břidlice polohy v krystaliniku, jeden kus g7303 rula, jeden kus g7376 hadec (gossan), jeden kus g7447 | ||
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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]