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Metamorphism can be instantaneous as in the shearing of rocks at plate boundaries or can take millions of years as in the slow cooling of magma buried deep under the surface of the Earth.
Are metamorphic rocks?
Metamorphic rocks started out as some other type of rock, but have been substantially changed from their original igneous, sedimentary, or earlier metamorphic form. Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors.
Where is this famous rock formation?
Ayers Rock is located in Uluru-Kata Tjuta National Park, 280 miles (450 km) southwest of Alice Springs, Australia; the park contains many such inselbergs, though Uluru is the largest and most well-known.
How do metamorphic rocks differ from igneous and sedimentary rocks?
Thus, The difference is that: Sedimentary rocks are usually formed under water when grains of broken rocks are glued together while igneous rocks form when melted rock (magma or lava) cools and metamorphic are rocks that once were igneous or sedimentary rocks but have been changed by pressure and temperature.
How are dynamic metamorphic rocks formed?
Dynamic metamorphism, or cataclasis, results mainly from mechanical deformation with little long-term temperature change. Textures produced by such adjustments range from breccias composed of angular, shattered rock fragments to very fine-grained, granulated or powdered rocks with obvious foliation and lineation.
What are contact metamorphic rocks?
Contact metamorphic rocks form when rocks are heated to high temperatures, usually through contact with an igneous intrusion at a relatively low pressure. The effects of contact metamorphism usually only extend for a short distance from the cooling igneous rock that is providing the heat.
How do metamorphic rocks form
What is a metamorphic rock?
Metamorphic rock examples ( Rocks formed from heat and pressure )
Types Of Rocks | The Dr. Binocs Show | Learn Videos For Kids
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