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 exhibitsbřidlice mastková, jeden kus g1989skarn sfaleritový s pyritem, jeden kus g3049 pararula rohovcová, jeden kus g2249 pararula rohovcová s aplit., dva kusy g2251 pararula arterxitická migmatit, jeden kus g2252 erlan navětralý, dva kusy g2255 problematičtí graptoliti (!!!!), dvacettři kusy g2498 skarn /magnetit/, jeden kus g2506 fylit s fe rudou, jeden kus g2510 fylity grafitické - moravikum, dva kusy g2934 břidlice mastková /krupník/, jeden kus g2543 porfyroid, jeden kus g1570 metadiabas, jeden kus g1571 fylit chloriticko-sericitický, jeden kus g1572 fylit albitický chloritický, jeden kus g1573 erlan, jeden kus g1574 fylit plodový sericitický, jeden kus g1575 migmatity epizonálně metamorf., jeden kus g1560 kvarcit sericitický, jeden kus g1562 fylit sericitický slabě grafit, jeden kus g1563 | ||
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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]