Planet Earth 4 - Chapter 8: Metamorphism Metamorphic Rock:...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 8: Metamorphism Metamorphic Rock: a rock that forms from a preexisting rock -undergoes mineralogical and textural changes in response to modification of its physical or chemical environment Metamorphism: the process by which one kind of rock transforms into a different kind of rock What happens during metamorphism? -neocrystallization (growth of new minerals) -recrystallizaiton -plastic deformation -phase change -pressure solution What causes metamorphism? -Due to heating -between 200-800 degrees C -recrystallization/neocrystallization -Due to pressure -phase changes Differential stress: if a material is squeezed unequally from different sides Preferred mineral orientation: metamorphic texture where platy grains lie parallel to one another -hydro thermic fluids accelerate metamorphic reactions -can also change the chemical composition of a rock Metasomatism: the process by which a rock’s chemical composition changes because of a reaction with hydrothermal fluids
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

Planet Earth 4 - Chapter 8: Metamorphism Metamorphic Rock:...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online