Rocas ígneas
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Rocas ígneas

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Rocas ígneas Rocas ígneas Presentation Transcript

  • MAGMA lava Mezcla de roca fundida y gases Rocas volcánicas Rocas plutónicas
  • Plutónicas (intrusivas) granito • formada por cuarzo, feldespato y mica sienita pegmatita • formada por feldespato rosa y mica negra • composición similar al granito •Cristales grandes Volcánicas (extrusivas) basalto • duro y pesado • oscura o negra • puede tener burbujas de aire pumita obsidiana •Poco peso, flota sobre el agua •Color claro •Textura esponjosa • negro y liso • parece cristal negro •Bordes cortantes