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 exhibitskvarcit -pyroxenický, jeden kus g5660pararula - sillimanit-biotit., jeden kus g5661 pararula muskovit-biotitická., jeden kus g5662 pararula muskovit-biotitická, jeden kus g5663 rula - muskovit. svorová, dva kusy g5665 ortorula, jeden kus g5666 amfibolový azbest, dva kusy g5547 pararula - cordierititická, jeden kus g5643 pararula, jeden kus g5644 pararula - cordierit-biototic., jeden kus g5645 pararula - rohovcová-biotit., jeden kus g5646 pararula silimanit-biotitická, jeden kus g5647 pararula - sillimanit-biotit., jeden kus g5648 rula - amfibol-biotitická, jeden kus g5650 pararula-sillimanit-biotitická, jeden kus g5651 ortorula sillimanit-biotitická, jeden kus g5652 pararula sillimanit-biotitická, jeden kus g5653 pararula amfibol-biotitická, jeden kus g5654 ortorula muskovit-biotitická, jeden kus g5655 pararula - muskovit-biotitická, jeden kus g5656 | ||
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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]