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That they have undergone some form of change. For more information on metamorphic rocks please see the related question.
Yes they are. Structural geologists commonly use them to estimate the strain that the rock has undergone by measuring their change in shape.
By definition a metamorphic rock has undergone recrystallization without melting - that requires a lot of heat and pressure. Marble is a metamorphic rock - it is recrystallized limestone or dolostone.
A metamorphic rock is formed by the elements, minor heat, and compression. When the metamorphic rock is melted by magma, this would indicate that the metamorphic rock is under the surface of the earth. If it rises and cools again you will have an extrusive igneous rock. In a lot of cases, this is metamorphic rock on the surface under the influence of lava. This would change the composition and it would not longer be metamorphic, but rather igneous.
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That they have undergone some form of change. For more information on metamorphic rocks please see the related question.
Metamorphic rock is given a grade from low to high depending on the amount of change it has undergone.
heat and pressure
Yes they are. Structural geologists commonly use them to estimate the strain that the rock has undergone by measuring their change in shape.
By definition a metamorphic rock has undergone recrystallization without melting - that requires a lot of heat and pressure. Marble is a metamorphic rock - it is recrystallized limestone or dolostone.
Metamorphic rock is igneous, sedimentary, or other metamorphic rock that has undergone a change due to heat and/or pressure. The change could be an alteration in mineralogy, a physical restructuring of existing minerals, or a recrystallization of existing minerals--giving the metamorphic rock a new set of characteristics which indicate that change.
the change undergone by continents is the places...
The torn sheet has undergone a physical change, the burned sheet has undergone a chemical change, and the crumpled sheet has undergone a physical change.
Metamorphic rocks have been changed by heat or pressure. This can be a change in size, shape, or arrangement of minerals.
A metamorphic rock is formed by the elements, minor heat, and compression. When the metamorphic rock is melted by magma, this would indicate that the metamorphic rock is under the surface of the earth. If it rises and cools again you will have an extrusive igneous rock. In a lot of cases, this is metamorphic rock on the surface under the influence of lava. This would change the composition and it would not longer be metamorphic, but rather igneous.
Heat and pressure change rocks to metamorphic!
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