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Contact metamorphism and regional metamorphism are two types of metamorphism that differ in the area and pressure involved. Regional metamorphism takes place over a much wider area. Contact metamorphism is taking place when magma is injected in the surrounding solid rock (country rock).
May 28, 2019 · The area affected by magma contact is usually small, ranging from 1 km to 10 km. Contact metamorphism produces rocks like marble, quartzite, and horns that are non-foliated(rocks without any cleavage). Regional Metamorphism. Regional metamorphism takes place over a much wider area. This metamorphism creates rocks like gneiss and ...
Jun 9, 2020 · The main difference between contact and regional metamorphism is that contact metamorphism occurs in a small region, whereas regional metamorphism occurs in a wide area. In geology, metamorphism is the formation of metamorphic rocks .
Nov 21, 2023 · There are two types of metamorphism: contact metamorphism and regional metamorphism. Contact metamorphism is a type of metamorphism where rock minerals and texture are changed,...
Contact Metamorphism. Contact metamorphism happens when a body of magma intrudes into the upper part of the crust. Heat is important in contact metamorphism, but pressure is not a key factor, so contact metamorphism produces non-foliated metamorphic rocks such as hornfels, marble, and quartzite.
Exercise 7.5 Contact metamorphism and metasomatism; Media Attributions; Contact metamorphism takes place where a body of magma intrudes into the upper part of the crust. Any type of magma body can lead to contact metamorphism, from a thin dyke to a large stock.
Contact Metamorphism. Contact metamorphism happens when a body of magma intrudes into the upper part of the crust. Heat is important in contact metamorphism, but pressure is not a key factor, so contact metamorphism produces non-foliated metamorphic rocks such as hornfels, marble, and quartzite.
The zone of contact metamorphism around an intrusion is very small (typically metres to tens of metres) compared with the extent of regional metamorphism in other settings (tens of thousands of square kilometres).
As described above, regional metamorphism occurs when rocks are buried deep in the crust. This is commonly associated with convergent plate boundaries and the formation of mountain ranges. Because burial to 10 km to 20 km is required, the areas affected tend to be large.
Contact Metamorphism. Contact metamorphism happens when a body of magma intrudes into the upper part of the crust. Heat is important in contact metamorphism, but pressure is not a key factor, so contact metamorphism produces non-foliated metamorphic rocks such as hornfels, marble, and quartzite.
