Karteikarten
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- 1How do metamorphic rocks form? By what system is this?Under heat or pressure or both.
Occurs in a solid state without melting. Usually without loss or addition of elements.
Isochemical (closed system) - 2What is contact metamorphism? How would it occur?Low pressure high temperature.
By the flow of heat from an igneous intrusion. - 3What is regional metamorphism? Where would it occur?High pressure and high temperature.
Deep within the crust during plate collisions. - 4What is dynamic metamorphism? Where would it occur?Low temperature and high pressure.
Along major fault zones. - 5Give two sources of heat.Internal heat from the mantle (geotherm 25-30° per km)
Igneous intrusion. - 6Give two sources of pressure.Weight of overlying rocks (lithostatic pressure)
Horizontal movement of plates (lateral pressure) - 7What factors affect the degree of metamorphism?-Temperature and pressure
-Original composition of rock
-Presence of pore fluids
(speeds up chemical reactions)
-Time
(very slow, 1mm per 1myr)
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- Karteikarten am Ohne Titel, erstellt von Luke Wren am 20/05/2015.
- Erstellt von
- Luke Wren · Mai 2015
- Aktualisiert
- 19 Feb 2016
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