What is the process of metamorphism? Metamorphic Rock What is the process of metamorphism?

The process by which heat, pressure or chemical processes turn one type of rock into another.

Most metamorphic rock forms deep within the Earth’s crust. All metamorphic rock forms from existing igneous, metamorphic and sedimentary rock

Can form two ways Contact metamorphism- occurs when small volumes of rock come into contact with magma Regional metamorphism- occurs when large areas of Earth’s crust are affected by the heat and pressure caused by the movement and collisions of tectonic plates.

FOLIATED ROCKS Texture in which the minerals are aligned in planes or bands. Examples are slate, schist or gneiss

SHALE SLATE SCHIST GNEISS HEAT AND PRESSURE HEAT AND PRESSURE HEAT AND SEDIMENTARY SLATE HEAT AND PRESSURE HEAT AND PRESSURE SCHIST GNEISS

NONFOLIATED ROCKS Rocks that do not have bands or aligned minerals

MARBLE QUARTZITE LIMESTONE QUARTZ SANDSTONE HEAT AND PRESSURE sedimentary QUARTZITE HEAT AND PRESSURE LIMESTONE sedimentary MARBLE