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 exhibitsortorula biotitická, jeden kus g7482rula - kvarcitická, jeden kus g7483 migmatit, jeden kus g7484 ortorula /žula/ okatá, břidl., jeden kus g7485 ortorula, dvojslídná, migmatit, jeden kus g7486 fylit - cínonosný /turmalinit/, jeden kus g7582 tmavý granulit, dva kusy g7647 stébelnatá žulorula kouřimská, jeden kus g7661 skarn, sedm kusů g7665 pararula, jeden kus g7688 pararula - biotitická, jeden kus g7689 pararula s muskovitem, jeden kus g7572 svor - dvojslídný, jeden kus g7573 mylonit, jeden kus g7574 erlan, jeden kus g7576 fylit - zrudnění, jeden kus g7734 pararula, jeden kus g7705 pararula, jeden kus g7706 fylit grafitický, jeden kus g7792 páskovaný amfibolit, jeden kus g7696 | ||
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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]