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 exhibitsgranulit moldanubikum, dva kusy g7453rula drobová jemnozrnná, jeden kus g7470 pararula - dvojslídná, jeden kus g7471 migmatit, jeden kus g7557 pararula až migmatit, jeden kus g7559 migmatit s cordioritem, jeden kus g7560 migmatit až anatektický granit, jeden kus g7561 amfibolit, jeden kus g7562 hadec, jeden kus g7563 pararula okatá, jeden kus g7479 pararula, jeden kus g7543 svor dvojslídný, jeden kus g7546 fylonit z rodelské linie, jeden kus g7547 svor dvojslídný, dva kusy g7548 svor muskovitický, jeden kus g7551 kvarcit biotiticko-muskovitick, jeden kus g7552 pararula, jeden kus g7553 pararula - muskovit -biotit, jeden kus g7554 biotitická rula, jeden kus g7617 amfibolit granátický, jeden kus g7481 | ||
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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]