Download Metamorphic rock

Chapter 4 section 3
 Rocks that have been changed because of changes in
 Heat
 Pressure
 Or the presence of hot, watery fluids
 Can be formed from igneous, sedimentary, or other
metamorphic rocks
 The pressure comes from the rock layers above
 The heat increases as you go through the layers
 Each type of metamorphic rock can come from several
kinds of parent rock
 Example- sedimentary rock – shale will change to slate
but when more pressure is applied then it can change to
phyllite, then schist, then gneiss
 When the mineral grains line up in parallel layers
 Slate- used as a roofing material because it is
watertight
 No layers
 Sandstone becomes Quartzite
 Limestone becomes Marble