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32 Cards in this Set
- Front
- Back
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a solid mixture of crystals of one or more minerals
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rock
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the process by which one rock type changes into another
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rock cycle
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is formed when the texture and composition of a preexisting rock is changed by heat or bressure deep underground
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metamorpic rock
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rocks that are formed when sediments are compacted and cemented together
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sedimentary rock
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formed from the cooling of magma or lava
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igneous rock
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based on compesition and texture
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rock classification
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the minerals that make up a rock
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composition
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determined by the sizes, shapes, and positions of the grain of which its made
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texture
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composed of small grains such as silt or clay
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fine grain
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have a texture between coarse and fined grained rock
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medium grained
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contain large grains the size of pebbles
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coarse grained
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what are the three different grains of rock
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fine,middle and coarse grained
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what are the three ways magma can change
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1.when rock is heated 2.when pressure is released 3.when rock changes composition
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lightweight and light in color
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felsic rock
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denser and darker than felsic rock
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mafic rock
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forms when magma cools and solidifies beneath the earths surface
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intrusive igneous rock
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large ballon shapeded formations that result when magma cools at great depths
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plutons
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igneous rock that forms on the earths surface
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extrusive igneous rock
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flow of lava emanatingfrom an erupting volcano
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lava flow
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long cracks in the earths surface
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fissures
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large amounts of lava from a fissure covering a vast area
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lava plateau
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layers in sedimetary rock
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strata
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what are the three catogories of sedimentary rock
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clastic chemical and organic
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made of fragments of other rocks and minerals
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clastic rock
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forms from solutions of minerals and water
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chemical rock
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most limestone forms from the remains of organisms that lived in oceans
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organic rock
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the layering in sedimentary rock
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stratafication
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occurs when rock comes into contact with magma
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contact metamorphism
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occurs when enormous pressure builds up in rock that is deeply buried under other rock
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regional metamophism
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what are the two textures of metamorphic rock
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foliated and nonfoliated
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minerals that are alligned and look like pages in a book
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foliated metamophic rock
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do not have aligned mineral grains
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non foliated metamorphic rock
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