Most metamorphism takes place deep underground, where high heat and pressure change the rocks, since both increase with depth.
a volcano ?
Metamorphism can take place in a solid state. The metamorphism can take place with or without any types of fluid activity, although, the majority is done with fluid activity.
Deep underground from heat and pressure.
Most metamorphism takes place deep underground, where high heat and pressure change the rocks, since both increase with depth.
•Geochemical, physical, and mineralogic (textural) changes that take place after burial of sediment -Not weathering -Not metamorphism/metasomatism
contact metamorphism, regional metamorphism, dynamic metamorphism
Two factors that contribute to the formation of metamorphic rocks are pressure and temperature.
Contact metamorphism is least likely to occur at locations where there is little to no intrusion of magma near the Earth's surface. In areas with minimal igneous activity and no heat source to drive the metamorphic changes, contact metamorphism is less likely to take place. Generally, regions located far away from tectonic plate boundaries or volcanic hotspots are less prone to experiencing contact metamorphism.
The four types of metamorphism are contact metamorphism, regional metamorphism, dynamic metamorphism, and hydrothermal metamorphism. Contact metamorphism occurs near igneous intrusions, regional metamorphism happens over large areas due to tectonic forces, dynamic metamorphism occurs along fault zones, and hydrothermal metamorphism involves hot, circulating fluids altering rocks.
Precipitation from a fluid like H2O or CO2. This can take place within the Earth by hydrothermal processes, diagenesis, and metamorphism, and at or near the Earth's surface as a result of evaporation, weathering, or biological activity.Sublimation from a vapor. This process is somewhat more rare, but can take place at a volcanic vent, or deep in space where the pressure is near vacuum.Crystallization from a liquid. This takes place during crystallization of molten rock (magma) either below or at the Earth's surface.Solid - Solid reactions. This process involves minerals reacting with other minerals in the solid state to produce one or more new minerals. Such processes take place during metamorphism and diagenesis due to changing temperature and pressure conditions.
The high grade metamorphism refers to the metamorphism that takes place at temperatures that are greater than 320 degree Celsius. The high grade metamorphism also takes place at relatively high pressure.
It is called the 'protolith' or 'parent rock'.