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Regional metamorphism is a type of metamorphism where rock minerals and texture are changed by heat and pressure over a wide area or region. Within a 50 mile traverse you walk from a shale into a slate into a phyllite. Metamorphism and Metamorphic Rocks DRAFT. How do temperature and pressure affect metamorphism? Other factors that tend to promote metamorphism include the presence of fluids (mainly water), accumulated elastic strain, and small particle size. Contact metamorphism 14. The standard scientific notation for pressure is expressed in pascals or megapascals (1 pascal is equivalent to 10 bars). local heat source frictional heat source regional heat source. metamorphism synonyms, metamorphism pronunciation, metamorphism translation, English dictionary definition of metamorphism. Interaction between metamorphic petrologists and geophysicists in the 1980s led to the realization that each metamorphic rock follows its own unique path through pressure- (depth-) temperature space during metamorphism and that these paths bear little or no resemblance to steady-state geotherms. The pressure and chemically active fluids, though operating are attributed assisting roles. As we learned in the context of igneous rocks, mineral stability is a function of temperature, pressure, and the presence of fluids (especially water). It is produced by contact as well as dynamic metamorphism. 8 people chose this as the best definition of contact-metamorphism: Metamorphism in which the... See the dictionary meaning, pronunciation, and sentence examples. Temperature and pressure are the primary agents that drive metamorphism. Earth Sciences Geology Birds Rocks and Minerals. Social Studies. Forms by contact metamorphism of mudstones and shales. Metamorphism is the isochemical process by which rocks are changed by heat or pressure … Contact metamorphism definition, localized metamorphism resulting from the heat of an igneous intrusion. With contact metamorphism we see rocks change, mainly due to heat in a relatively small region. answer choices . 10. Contact metamorphism is a type of metamorphism where rock minerals and texture are changed, mainly by heat, due to contact with magma. Marble is more compact than limestone since its porosity is reduced by pressure and recrystallization. Pressure-temperature-time paths. Contact metamorphism describes the type of metamorphism attributed to increased temperature, usually from proximity to a heat source such as an intrusive magma body or a lava flow, and the rock undergoes thermal metamorphism. a few seconds ago. Contact Metamorphism – Contact metamorphism occurs adjacent to igneous intrusions and results from high temperatures associated with the igneous intrusion. Local metamorphism happens at a much smaller level, usually from nearby igneous intrusions. Metamorphism associated with large-scale mountain building. Dynamic Metamorphism also occurs because of mountain-building. Undergraduate Geology - Part 2 (Metamorphic Processes and Products) Note on Temperature, Pressure and Metamorphism, created by siobhan.quirk on 19/05/2013. Regional-scale metamorphism generally occurs deep underground during orogenies, or mountain-building episodes. 9th - 12th grade. Regional. The blueschist facies and the eclogite facies occur at high pressure. See more. Because contact metamorphism is not caused by changes in pressure or by differential stress, contact metamorphic rocks do not become foliated. Contact Metamorphism 13. In contact metamorphism there is a _____ . The albite-epidote-hornfels facies is a facies at low pressure and relatively low temperatures. seafloor metamorphism. Forced.

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