It is convenient to distinguish several general types of metamorphism in order to simplify the description of the various metamorphic phenomena. Types of metamorphic processes. The three types of metamorphism are Contact, Regional, and Dynamic metamorphism. rences of contact metamorphism of Type 6 may. There are two main types of metamorphism: Contact metamorphism—occurs when magma contacts a rock, changing it by extreme heat (Figure 4.14). The process where one type of rock changes into metamorphic rock because of chemical processes or changes in temperature and pressure Define contact metamorphism. When a rock is contact altered by an igneous intrusion it very frequently becomes more indurated, and more coarsely crystalline. Many altered rocks of this type were formerly called hornstones, and the term hornfels is often used by geologists to signify those fine grained, compact, non-foliated products of contact metamorphism. Rocks. Because contact metamorphism is not caused by changes in pressure or by differential stress, contact … pressures, arising at the contacts in this way, Caineng Zou, in Unconventional Petroleum Geology, 2013 (2) Contact Metamorphism and Rock Type. Contact metamorphism normally happens round intrusive igneous rocks, and is the end result of temperature growth associated with the introduction of warm magma into the colder u . 1.Contact Metamorphism. https://www.geologypage.com/2019/05/contact-metamorphism.html S . Regional metamorphism—occurs when great masses of rock change over a wide area due to pressure exerted on rocks at plate boundaries. When this happens the existing rocks temperature rises and also becomes infiltrated with fluid from the magma. The three main types of metamorphism are: Contact (also known as thermal) metamorphism: this is produced by high temperature, low pressure, low strain and variable fluid pressure. All of these factors vary widely and result in different types of metamorphism depending upon which factor is dominant. Contact metamorphism. Contact Metamorphism occurs when magma comes in contact with an already existing body of rock. Contact metamorphism occurs to solid rock next to an igneous intrusion and is caused by the heat from the nearby body of magma. Types of metamorphism. apparently be formed under various depth con-ditions, predominantly at about 7-10 km. Local. Types of Metamorphism Contact Metamorphism- This type of metamorphism occurs locally adjacent to the igneous intrusion; with high temp. Origin of metamorphic rocks: types of metamorphism. Contact Metamorphism: A type of local, thermal metamorphism caused by the intrusion and extrusion of magmas; takes place in rocks at or near their contact with a body of igneous rock. 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