Fichas
Sin título
Fichas del conjunto (7)
- 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)
Información
- Descripción
- Fichas sobre Sin título, creado por Luke Wren el 20/05/2015.
- Creado por
- Luke Wren · may 2015
- Actualizado
- 19 feb 2016
- Visitas
- 0
- Valoración