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 exhibitssvor - granát.- muskovitický, jeden kus g5734rula - muskoviticko-biotitická, jeden kus g5736 fylit -kont. metamorfovaný, jeden kus g5737 fylit kont. metamorfovaný, jeden kus g5738 svor - drobnozrnný,dvojslídný, jeden kus g5739 rula-šedá kvarcitická, jeden kus g5740 erlán - zčásti skarnizovaný, dva kusy g5741 amfibolit, jeden kus g5742 rula - muskoviticko-biotit., jeden kus g5743 svor, jeden kus g5744 pararula -kompaktní biotitická, jeden kus g5695 ortorula - biotitická, jeden kus g5697 pararula - sillimanit-biotit., jeden kus g5698 pararula - biotit. sillimanit., jeden kus g5699 pararula - biotitická, jeden kus g5700 pararula - biotit. s amfibolit, jeden kus g5701 amfibolit, jeden kus g5702 hadec, jeden kus g5703 ortorula - biotitická, jeden kus g5704 eklogit - hornina, jeden kus g5705 | ||
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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]