ELS.Module-8.METAMORPHISM.FINAL (1).pdf

METAMORPHISM Earth & Life Science–Module 8 THE ROCK CYCLE  METAMORPHISM from the Greek word “meta” means change and “morphe” means form. the change that takes place within a body of rock as a result of it being subjected to conditions that are different from those in which...

METAMORPHISM Earth & Life Science–Module 8 THE ROCK CYCLE  METAMORPHISM from the Greek word “meta” means change and “morphe” means form. the change that takes place within a body of rock as a result of it being subjected to conditions that are different from those in which it is formed “changed rocks” A process that transforms a rock to a new type of rock All types of rocks can change. Metamorphic rocks originally start out as different type of rocks. Because of heat and pressure deep within the earth, they change into a new rock Identify the words related to the process of Metamorphism HEAT HEAT VOLCANIC ROCK VOLCANIC ROCK PRESSURE FLUID PRESSURE MANTLE FLUID TEMPERATURE WEATHERING MANTLE CEMENTATION TEMPERATURE  METAMORPHIC ROCK is formed at the surface of the Earth through the process of metamorphism with recrystallization of minerals in rocks due to changes in pressure and temperature conditions. Scheme of Metamorphic Rock Identification  2 TYPES OF METAMORPHISM Due to changes in Pressure and Mainly by heat due to contact temperature over a large region with magma FACTORS OF METAMORPHISM: The heat is the most important Temperature factors because it provides the energy to drive the chemical changes / Heat which results in the recrystallization of minerals. Heat Increases as the depth Increases FACTORS OF METAMORPHISM: Pressure Increases as Pressure the depth Increases buried rocks are subjected to the force or stress. FACTORS OF METAMORPHISM: enhances the Presence of metamorphic process Chemically- Usually, the common fluid which helps active fluid the chemical activity is water containing ions in solution. As the rocks buried deeply, the water is forced out of the rock and becomes available to aid in chemical reactions  METAMORPHISM FACTORS OF METAMORPHISM: Increase in Temperature Increase in Pressure Presence of Chemically- active fluids Assessment: ¼ sheet of paper  “Our greatest transformation happens through our toughest times”–Anna Pereira