Heat / Pressure
The process in which an existing rock is changed by heat, pressure, or both.
What is METAMORPHISM?
Most metamorphic changes occur over _____ surfaces or areas.
Most metamorphic changes occur over LARGE surfaces or areas.
Why is rock slate useful to have as floors in buildings?
It displays foliation.
What stone is used for art or decoration?
MARBLE
When you cook popcorn, you use _______ to increase the pressure within kernels.
What is HEAT?
The deeper below the surface a rock is, the _____ the metamorphic changes.
The deeper below the surface a rock is, the GREATER the metamorphic changes.
an arrangement of minerals in flat or wavy parallel bands.
What is FOLIATION?
Marble develops from what nonfoliated rock?
LIMESTONE
The original sedimentary or igneous rock is called what?
What is PARENT ROCK?
The magma or lava heats the rock it comes in contact in, causing ____________.
The magma or lava heats the rock it comes in contact in, causing Recrystallization.
What is the latin word for foliage? And its meaning?
What are the reasons that metamorphic rock may lack foliation?
- made up of mainly one mineral
- subjected to high pressure
Graphite is used in this daily utensil.
What is a PENCIL?
The types of metamorphic changes that occur depend on the types of ___________.
The types of metamorphic changes that occur depend on the types of PARENT ROCKS.
When does foliation develop?
When rocks are under pressure. When minerals flatten out or line up in bands.
What mineral is made up from sandstone and pieces of quartz?
QUARTZITE
When atoms join together differently as a new bond.
What is RECRYSTALLIZATION?
Changes can occur over __________ of kilometers or over just a _____ centimeters.
Changes can occur over HUNDREDS of kilometers or over just a FEW centimeters.
Metamorphic rocks that do not show foliation are called?
NONFOLIATED ROCKS
Name 3 rocks that are considered Foliated Rocks.
PHYLITE
SCHIST
GNEISS