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, chloriticko-sericitický, jeden kus, vrtné jádro g4694kvarcit - grafitický, jeden kus g4996 fylit, jeden kus, vrtné jádro g4640 pararula, jeden kus g6035 pararula, dva kusy g6036 dvojslídná pararula, jeden kus g6037 pararula, dva kusy g6038 migmatit, jeden kus g6042 hrubozrnný amfibolit, jeden kus g6043 jemnozrnný amfibolit, jeden kus g6047 amfibolit, jeden kus g6052 pararula, dva kusy g6053 biotitická pararula, jeden kus g6054 migmatizovaný amfibolit, jeden kus g6059 svor - dvojslídný kvarcitický, jeden kus g5727 fylit-sericitický, dva kusy g5728 kvarcit, jeden kus g5729 rula - muskovit.-biotit.svor., jeden kus g5730 amfibolit s hojným plagioklasem, dva kusy g5731 kvarcit - světlý, jeden kus g5733 | ||
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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]