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45 Cards in this Set
- Front
- Back
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The three agents of metamorphism are:
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Heat
Pressure Chemically active fluids |
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The three types of metamorphism are:
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Contact
Dynamic Regional |
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The mineralogy of a mteamorphic rock provides information on the
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Degree or intensity of metamorphism
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Metamorphic rocks form from:
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Pre existing rocks
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Metamorphism changes pre-existing rocks by changing their:
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Texture
Composition |
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What types of transformations occur in a rock during metamorphism?
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Mechanical transformation
Chemical transformation |
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Whats is the parent rock for marble?
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Limestone
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Marble is composed of what mineral?
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Calcite
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A metamorphic rock composed of alternating layers of ferromagnesian and non ferromagnesian minerals is called a:
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Bneiss
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Metamorphic changes occur while the rock is liquid or solid?
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Solid
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What type of metamorphism occurs when a limestone is intruded by a magma?
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Contact
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What type of metamorphism occurs in a fault zone?
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Dynamic
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What is the heat source for contact metamorphism?
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Magma/rising magma
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Fault breccia and fault gouge are evidence of:
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Dynamic metamorphism
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The parent rock of slate is:
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Shale
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What geologic process is responsible for regional metamorphism?
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Mountain Building
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Name one non-foliated metamorphic rock:
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Marble
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Name one foliated metamorphic rock:
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Slate
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What is contact metamorphism?
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occurs because of an igneous intrusion
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What is dynamic metamorphism?
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Metamorphism along a fault
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Evidence of a dynamic metamorphasm:
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Fault gauge
Fault breccia |
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What theory can account for the forces that produce regional metamorphism?
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Tectonism, constant moving and squeezing during mountain building.
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The mineralogy of a metamorphic rock is a good guide to the:
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Degree or intensity of metamorphism
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The two textures of metamorphic rocks are:
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Foliated
Non foliated |
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Foliated rocks have what type of appearance?
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Refers to parallesm of the mineral grains. Rocks show a preffered orientation, the minerals are seperated into layers, lenses or bands
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Do non-foliated rocks have a preferred orientation of the mineral grains?
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No
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A schist is what kind of rock?
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Foliated
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A rhyolite is what kind of rock?
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Igneous
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A sandstone iw what kind of rock?
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Sedamentary
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A gneiss is what kind of rock?
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foliated
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A basalt is what kind of rock?
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Igneous
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Marble is metamorphosed:
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Limestone
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Schists have what type of texture?
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Glitters, spangly, sparkley
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What is the parent rock for marble?
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Limestone
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What metamorphic rock has the ferromagnesian and non-ferromagnesian menerals separated into layers or lenses?
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Foliated Rocks
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What geologic process is responsible for the temperature and pressure required for regional metamorphism?
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Mountain building
Tectonism |
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What is the mineralogy of a marble?
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Calcite
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What is the mineralogy of a limestone?
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Calcite
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In general, marble is------ grained, and limestone is-------grained.
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Coarse and fine
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Are all quartzites metamorphic?
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Yes
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Slate forms from the metamorphism of a?
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Shale
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In regards to the foliated metamorphic rocks, which rock represents the highest degree of metamorphism?
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Gneiss
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Can metamorphic rocks form from a cooling lave?
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Forms in a solid state
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Name one use for slate:
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Chalk board
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What metamorphic rock is composed of quartz grains cemented together with a silica cement?
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Quartsite
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