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.

grafitické fylity

No. of sample:	g5383
Rock:	fylit, metamorfity
Description:	jeden kus-vrtné jádro
Localization:	Jenichov, vrt MJ-8, hl.867, 70m

Author:	coll.ÚÚG
Comment:	s vložkami fylitů v tufogenní serii. podloží české křídy,algonkium slabě metamorfované

grafitické fylity
g5383

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