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Metamorphism
Metamorphism
is the change in mineral type and structure that occurs in solid rocks
when they are heated without melting, put under intense pressure, react
with chemically rich solutions or some combination of these three processes.
it can bedivided into 3 major and 2 minor types of interactions:
Regional
Metamorphism - reactions altering the minerals
in a rock caused by combinations of heat and pressure without melting
- generally due to increaseing burial in the earth.
| Phase Changes-
changes in mineral structures, without chemical changes, caused by increased
pressure, heat or the combination. |
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Contact Metamorphism-
reactions caused by intenese heating with little or no pressure.
| Metasomatism-
the reactions to chemical rich fluids - increases with temperature. |
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| Mylonitization-
the fracturing and recrystalization caused by pieces of the Earth sliding
over or against each other at faults. |
Copyright William C. Wilson 1997
Send email to wcw@dragonlogic.com
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