metamorphism


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met·a·mor·phism

 (mĕt′ə-môr′fĭz′əm)
n.
The process by which rocks are altered in composition, texture, or internal structure by extreme heat, pressure, and the introduction of new chemical substances.

metamorphism

(ˌmɛtəˈmɔːfɪzəm)
n
1. (Geological Science) the process by which metamorphic rocks are formed
2. a variant of metamorphosis

met•a•mor•phism

(ˌmɛt əˈmɔr fɪz əm)

n.
a change in the constitution of a rock by natural means, as pressure and heat.
[1835–45]

met·a·mor·phism

(mĕt′ə-môr′fĭz′əm)
The process by which rocks are changed in composition, texture, or structure by extreme heat and pressure.

metamorphism

1. the process of change in the form and structure of rocks by the agency of heat, water, and pressure.
2. the change of particular types of rock, as limestone into marble. Also called epigenesis. See also change. — metamorphic, adj.
See also: Geology
change in form, structure, shape, appearance, etc. See also geology. — metamorphic, adj.
See also: Change
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.metamorphism - change in the structure of rock by natural agencies such as pressure or heat or introduction of new chemical substancesmetamorphism - change in the structure of rock by natural agencies such as pressure or heat or introduction of new chemical substances
anamorphism - metamorphism that occurs deep under the earth's surface; changes simple minerals into complex minerals
epigenesis - a geological change in the mineral content of rock after the rock has formed
geologic process, geological process - (geology) a natural process whereby geological features are modified
katamorphism - metamorphism that occurs at or near the earth's surface; breaks down complex minerals into simpler ones
References in classic literature ?
But the descriptions which we now possess of the Silurian deposits over immense territories in Russia and in North America, do not support the view, that the older a formation is, the more it has suffered the extremity of denudation and metamorphism.
The origin of Ti-clinohumite with the presence of F can be attributed to a metasomatic process resulting from the external influx of F-bearing fluids or to internal buffering during metamorphism.
Petrographic analysis revealed planar deformation features broadly supportive of shock metamorphism (Spooner et al.
And the low percent of smectite in both mixed-layer phases reflects a high degree of burial metamorphism since the time of their origin.
1B) characterise the metamorphism and structure of the Palaeozoic rocks on the Chilean coast, near Los Vilos (30[degrees]S).
The model should reflect the general trends of changing with depth such parameters as composition, degree of metamorphism, density, compression and shear wave velocities, anisotropy, indices of elasticity modulus and lateral strain factor, lithostatic and tectonic stresses.
One of the evidence of this event is dynamic metamorphism shows slatting and also proceeds phillitic rock, also metamorphism about sub green shist facies has been formed in T.
The team's examination found that the rock samples were subjected to high-grade metamorphism.
Eight papers offer both an overview and new data in the form of stratigraphy, structure, metamorphism, and magmatism--which covers the geological results of the primarily Neogene collapse characterizing segments of interest, in response to late stage reorganization of the subduction zone--and the rollback and breakoff of segments of the subducting slab.
Shock metamorphism of rock present at the time of impact provides a more definitive means of constraining the age of an impact event.
Most of the economic brucite deposits appear to be hosted by marbles affected by high-temperature, low-pressure metamorphism (mainly in pluton-associated, contact metamorphic aureoles).
Ruby forms during metamorphism, when heat and pressure underground rearrange the atoms that make up the minerals in a rock.