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May 22, 2019 · Contact metamorphism is a type of metamorphism that occurs adjacent to intrusive igneous rocks due to temperature increases resulting from hot magma intrusion into the rock. The metamorphosed zone is known as the metamorphic aureole around an igneous rock.
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.
As seen in Figure 8.6, contact metamorphism leads to the development of metamorphic zones called contact aureoles, or skarns, that wrap around an intrusion. Aureoles may be anywhere from a few centimeters to many kilometers thick.
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.
Learn about contact metamorphism, a process that transforms rocks near igneous intrusions at low pressure. See examples of marble, quartzite, hornfels and calc-silicate minerals formed by contact metamorphism.
Learn about the different types of metamorphism, such as burial, regional, seafloor, and subduction zone metamorphism, and how they are influenced by pressure, temperature, and fluid. See examples of metamorphic rocks and how they form from igneous and sedimentary rocks.
Contact metamorphism occurs primarily as a consequence of increases in temperature when differential stress is minor. A common phenomenon is the effect produced adjacent to igneous intrusions where several metamorphic zones represented by changing mineral assemblages reflect the temperature gradient from the high-temperature intrusion to the ...
