It should also be realized that the time involved in metamorphosing a rock is geologic time – may be hundreds of thousands or even millions of years. The metamorphic process is often accompanied by the percolation of chemically active fluids through the rocks. The most important fluid is water...
Definitions ofmetamorphic rock noun rock altered by pressure and heat see more Cite this entry Style: MLA "Metamorphic rock."Vocabulary.com Dictionary,Vocabulary.com, https://www.vocabulary.com/dictionary/metamorphic rock. Accessed 14 Dec. 2024. ...
The meaning of METAMORPHIC is of or relating to metamorphosis. How to use metamorphic in a sentence.
The meaning of METAMORPHISM is a change in the constitution of rock; specifically : a pronounced change effected by pressure, heat, and water that results in a more compact and more highly crystalline condition.
In 1833 Lyell had coined the term 'metamorphic' to denote sedimentary rocks changed by heat. Keilhau in contrast promoted a theory of metamorphosis in the cold state of sedimentary rocks into massive rock types such as granite, syenite and porphyry. In the field Lyell and Keilhau agreed on ...
Geology.a change in the structure or constitution of a rock due to natural agencies, as pressure and heat, especially when the rock becomes harder and more completely crystalline. Archaic.metamorphosis. Discover More Word History and Origins ...
Metamorphic definition: pertaining to or characterized by change of form, or metamorphosis. . See examples of METAMORPHIC used in a sentence.
Feldspars crystallize from magma as both intrusive and extrusive igneous rocks and are also present in many types of metamorphic rock...- mineral crystals, with the larger crystals known as phenocrysts. Both extrusive and intrusive rocks can be porphyritic, meaning all types of igneous rocks......
On the basis of their origin, the rocks can be classified as igneous, sedimentary and metamorphic rocks. Some Rock-Forming Minerals: 1.Feldspar: ADVERTISEMENTS: Half the crust is composed of feldspar. It has a light colour and its main constituents are silicon, oxygen, sodium, potassium, calci...
II) Metamorphic rocks: are the result of the transformation of an existing rock type, in a process called metamorphism (which means "change in form"), where this existing rock is subjected to heat and high pressure. They can form: A) From tectonic processes such as continental collisions ...