Metamorphic Rock Review Ch 7
Name the 3 agents of metamorphism.
Name the 3 agents of metamorphism Name the 3 agents of metamorphism. Heat, pressure, and chemically active fluids
Define metamorphism.
Define metamorphism. The transformation of one rock type into another rock type.
What kind of rocks can become metamorphic rock?
What kind of rocks can become metamorphic rock What kind of rocks can become metamorphic rock? Igneous, sedimentary, and metamorphic
In general, what causes rocks to change into another rock type?
In general, what causes rocks to change into another rock type In general, what causes rocks to change into another rock type? They are exposed to conditions different from those in which they were formed.
Large and flat areas of metamorphic rock in the center of a continent are called what?
Large and flat areas of metamorphic rock in the center of a continent are called what? Shields
What two rock properties are changed during metamorphosis?
What two rock properties are changed during metamorphosis What two rock properties are changed during metamorphosis? The texture and mineral content.
Name the four most common metamorphic settings.
Name the four most common metamorphic settings. Contact metamorphism Hydrothermal Regional Cataclastic
Describe the setting typical for Contact Metamorphism.
Describe the setting typical for Contact Metamorphism Describe the setting typical for Contact Metamorphism. Contact metamorphism occurs around the edge of a molten igneous body.
What metamorphic setting occurs in areas of mountain building?
What metamorphic setting occurs in areas of mountain building What metamorphic setting occurs in areas of mountain building? Regional metamorphism
Which agent of metamorphism dominates the process of Contact Metamorphism?
Which agent of metamorphism dominates the process of Contact Metamorphism? Temperature is most important. Pressure is low.
What do we call the region around an igneous body where contact metamorphism occurs?
What do we call the region around an igneous body where contact metamorphism occurs? Aureole.
What type of texture is common in the aureole of an igneous pluton?
What type of texture is common in the aureole an igneous pluton What type of texture is common in the aureole an igneous pluton? Non-Foliated.
What metamorphic rock type is produced from shale during contact metamorphism?
What metamorphic rock type is produced from shale during contact metamorphism? Hornfels
During regional metamorphism, what agents of metamorphism are important?
During regional metamorphism, what agents of metamorphism are important? Temperature and pressure
Most important metamorphic ore deposits are produced by ____________ metamorphism?
Most important metamorphic ore deposits are produced by ____________ metamorphism? Contact
Why do foliated rocks tend to be located in areas of regional metamorphism?
Why do foliated rocks tend to be located in areas of regional metamorphism? The differential pressure of the convergent plates causes platy minerals and elongated mineral grains to align parallel to each other.
During metamorphism the material undergoing deformation is in which phase (liquid, solid, or gas) ?
During metamorphism the material undergoing deformation is in which phase (liquid, solid, or gas) ? Solid
Where does most of the hydrothermal metamorphism happen?
Where do most of the hydrothermal metamorphism happen Where do most of the hydrothermal metamorphism happen? At divergent plate boundaries.
Why does most of the hydrothermal metamorphism happen at divergent plate boundaries?
Why does most of the hydrothermal metamorphism happen at divergent plate boundaries? Very hot (newly formed) basaltic rock comes in contact with water to form iron-rich solutions.
A type of foliation in which rocks split cleanly into thin slabs.
A type of foliation in which rocks split cleanly into thin slabs A type of foliation in which rocks split cleanly into thin slabs. Rock (or slaty) cleavage.
Minerals that contain water within their internal structures are said to be ______________
Minerals that contain water within their internal structures are said to be ______________ hydrated
A type of foliation with parallel alignment of medium to coarse grained platy minerals.
A type of foliation with parallel alignment of medium to coarse grained platy minerals. Schistosity
A type of foliation with parallel bands of color.
A type of foliation with parallel bands of color. Gneiss
Starting with a shale or mudstone that is exposed to increasing grades of metamorphism, what is the progression of foliated rocks?
Starting with a shale or mudstone that is exposed to increasing grades of metamorphism, what is the progression of foliated rocks? SlatePhylliteSchistGneiss
What parent materials can form Gneiss?
What parent materials can form Gneiss What parent materials can form Gneiss? Shale, granitic, and volcanic rocks
What non-foliated rock forms from limestone or dolostone?
What non-foliated rock forms from limestone or dolostone? Marble
What non-foliated rock forms from quartz sand?
What non-foliated rock forms from quartz sand? Quartzite
What mineral imparts a red color?
What mineral imparts a red color? Iron
What metamorphic setting produces the largest quantity of metamorphic rock?
What metamorphic setting produces the largest quantity of metamorphic rock? Regional metamorphism