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Metamorphic rock

Metamorphic rock. Origin Metamorphic rocks arise from the transformation of existing rock types P rocess called metamorphism, which means "change in form". The original rock is subjected to heat and pressure, causing profound physical and/or chemical change

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Metamorphic rock

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  1. Metamorphicrock Origin Metamorphic rocks arise from the transformation of existing rock types Processcalled metamorphism, which means "change in form". The original rock is subjected to heat and pressure, causing profound physical and/or chemical change Formationzone(ratio of heat and pressure) upperzone - epizonemiddlezone - mezozone lowerzone – katazone Types of metamorphism Regional metamorphism -- affects a large area; commonly due to mountain building; foliated rocks common Contact metamorphism -- rocks near igneous intrusion get baked; produces non-foliated met. Rocks

  2. Metamorphicrock EPIZONE P – decisive, thin 1-2mm slaktexture, directionaltexture: clayshale, phyllite, talkschist • MEZOZONE • P – T equalydecisive, thick >2mm slaktexture, directionaltexture: schist (mica) • KATAZONE • T – decisive, thin 1-2mm slaktexture, directionaltexture: clayshale, phyllite, talkschist

  3. Metamorphic rock EPIZONE Clayslate:composed clay minerals and quartz grains and the typical color is gray. Waterresistrant. Phyllite: foliated metamorphic rock created from slate that is further metamorphosed so that very fine grained white mica achieves a preferred orientation . Typicalyblack, darkgray, thinslated (mm), shiny

  4. Metamorf kőzetek

  5. Metamorphic rock EPIZONE Greenschist: green minerals such as chlorite, serpentine and platy minerals such as muscovite and platy serpentine, thinslated (mm),

  6. Metamorphic rock EPIZONE Talcschist:soft, talcmineral. Lightcoloured Serpentinite: - green – black -Serpentinemineral, quartz, calcite, pyrite -can be polished -strong

  7. Metamorphic rock

  8. Metamorphic rock MEZOZONE Schist (mica) - sparkles (micacontent), grey - biotite, muscovite, feldspar, quartz local building material

  9. Metamorphic rock KATAZONE Gneis: - lookslikegranite, BUT: - directionalterxture- minerals: quartz, feldspar, plagioclase, biotite, amphibole Crystalinetexture, measonarystone, loadbearingstructure, ornamentalstone, crashedstone (ballastunderrails, roads, concreteagregate)

  10. Metamorphic rock KATAZONE Marble Crystalinetexture, anycolour (bright), Fizzlestoacids Calciteveins, fellscolderthanlimestone (becousewerydense) Loadbearingstructure, Ornamentalstone, chemistry

  11. Metamorphic rock

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