Chapter 26.4 Flashcards
Metamorphic rock is changed by a combination of which 3 things?
Heat, pressure, & chemical reactions.
Which types of rocks can be changed by metamorphism?
Igneous, sedimentary, or metamorphic rock can be changed by metamorphism.
What is it called when metamorphic changes in rocks occur over large areas?
Regional metamorphism.
What is it called when metamorphic changes in rocks occur over small changes?
Contact metamorphism.
When shale is compressed, which type of metamorphic rock is created?
Slate forms when shale is compressed causing minerals, like mica, to orient perpendicular compression.
What are the two types of metamorphic rock textures?
Foliated texture & nonfoliated texture.
Define Foliated texture.
Foliated rocks have crystals that are arranged in layers & bands.
Define non foliated texture.
Non foliated rocks have crystals with more random orientations.
Metamorphic rocks are mainly classified based on which 2 things?
Texture & composition
Define rock cycle.
The continual changing of rocks from one type to another.
Which types of rocks are part of the rock cycle?
Igneous, sedimentary, & metamorphic
What are the 3 types of rocks?
Igneous, sedimentary, & metamorphic
Which type of rocks form from molten rock?
Igneous
Which types of rocks are formed from clasts, precipitation, or compressed once living matter?
Sedimentary
Which types of rocks are formed from heat, pressure, & chemical reactions?
Metamorphic
