METAMORPHISM Meaning and
Definition
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Metamorphism is a geological process that refers to the transformation of rocks through intense pressure, temperature, and chemical activity within the Earth's crust. It involves the alteration of existing rocks, usually sedimentary or igneous in origin, into new rock types through the recrystallization and reorganization of minerals present in the original rock.
During metamorphism, the rocks undergo significant changes in their mineral composition, texture, and structure due to the pressure and heat exerted on them. This process occurs deep within the Earth's crust, typically at depths greater than a few kilometers, and is driven by tectonic forces or contact with hot fluids.
The minerals within the rock can be subjected to changes such as their crystal size, shape, and orientation. Metamorphism can result in the formation of new minerals, the removal of certain minerals, and the reorganization of mineral grains to form new textures.
There are various types of metamorphism, including regional metamorphism, which occurs over large areas and is associated with the collision of tectonic plates, and contact metamorphism, which occurs when rocks come into contact with a hot igneous intrusion. Each type of metamorphism produces distinct rock assemblages and qualities.
Overall, metamorphism plays a crucial role in the Earth's geological processes as it contributes to the formation of different rock types and helps develop the Earth's crust. It is an essential process for understanding the evolution of rocks and the formation of mineral resources.
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The state or quality of being metamorphic; the process of transformation; in geol., that change of structure, or of texture, which has been effected on many rocks by the agency of heat, chemical action, or otherwise.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
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Etymology of METAMORPHISM
The word "metamorphism" comes from the combination of two Greek words: "meta" meaning "change" or "beyond" and "morphe" meaning "form" or "shape". Therefore, "metamorphism" refers to the process of changing or transforming the form or structure of something. In the field of geology, metamorphism specifically refers to the alteration of rocks through various geological processes such as heat, pressure, and chemical reactions.
Similar spelling words for METAMORPHISM
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