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.

stromatit

No. of sample:	g6175
Rock:	migmatit, metamorfity
Description:	jeden kus
Localization:	Čermákovice, v. okraj obce,

Author:	leg.Homola,1964
Comment:	moldanubikum - moravská větev, jemnozrnný biotitický s. s proniky kyseléhoichoru, tvořeného ortoklasem a křemenem

stromatit
g6175

Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]