Concept explainers
Pick the keyword from the given list: The parallel arrangement of mineral grains that can occur in a metamorphism rock as a consequence of pressure.
Answer to Problem AM
Explanation of Solution
Metamorphism is the process in which mineral content, structure or both of a rock is changed but the rock remains solid. All sedimentary and igneous rocks can be metamorphosed.
Any metamorphic rock can be subjected to further metamorphism. Heat, pressure and chemically reactive hot-water solutions are the agents of metamorphism. The resulting metamorphic rock depends on the composition of the parent rock.
In regional metamorphism, the rocks undergo intense deformation during mountain building. In this type of metamorphism, the mineral grains are elongated, flattened and aligned perpendicular to the direction of the directed pressure.
The flattened minerals grains become aligned parallel to one another, this type of arrangement of minerals grains in a pronounced layering of rock caused by regional metamorphism. This type of pronounced layering of the rock is called foliation.
Conclusion:
Therefore, the word Foliation can be picked from the list.
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Chapter 22 Solutions
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