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Asked in Geology, Rocks and Minerals, Sedimentary Rock
Why could the color of a sedimentary rock change during metamorphism?
The color could change due to the creation of new minerals through the loss of or introduction of, fluids. ...
Asked in Geology, Earth Sciences, Rocks and Minerals
Describe the process of metamorphism?
During metamorphism, heat, pressure, and hot fluids cause some minerals to change into other minerals. Minerals may also change in size or shape, or they may separate into parallel bands that give the rock a layered appearance. ...
What is different between metamorphism and metasomatism?
Metasomatism is specifically the chemical change of rock by the introduction of hot fluids, creating a different type of rock. Broadly, metamorphism is the change of rock from one type to another by heat and/or pressure. ...
Asked in Geology
What are the three main types of metamorphism Compare and contrast the factors that cause each type?
The three main types of metamorphism are: Regional Metamorphism Contact Metamorphism Hydrothermal metamorphism Regional metamorphism is caused when high temperature and pressure affect large regions of Earths crust, It can range from low grade to high grade. It causes folded rock layers. Contact Metamorphism is when molten material comes in contact with solid rock. High temperature and moderate to low pressure from mineral assemblages. Metamorphic effects decrease with distance. Hydrothermal Metamorphism is when very hot water reacts with rock and alters its chemical and mineral composition. As...
Asked in Anthropology, Rocks and Minerals
What are some types metamorphic rock?
These rocks get their name from the Greek words 'meta' and 'morph', meaning 'change of form'. Metamorphic rocks are produced by the alteration of pre-formed rocks by pressure, temperature and migrating fluids, often in environments deep in the Earth's crust. Because of the severe conditions which rocks undergo during metamorphism, the original minerals may become unstable and change to maintain equilibrium with the new environment. This can involve changes in mineralogy (recrystallization of existing minerals or formation of new ones) and usually changes...
Asked in Geology, Rocks and Minerals
What is the difference between weathering and metamorphism?
Weathering is the decomposition of earth rocks, soils and their minerals through direct contact with the planet's atmosphere. Metamorphism is the solid-state recrystallisation of pre-existing rocks due to changes in heat, pressure, and/or introduction of fluids. SImply put, weathering is the break down of rock (wear and tear) and Metamorphism is rock changing due to Heat,Pressure, and Chemically active fluids ...
Asked in Rocks and Minerals
What causes rock metamorphism?
Different types of metamorphism include: 1. Thermal metamorphism: involving heat alone, without significant pressure effects. Normally associated with igneous intrusions, where contact metamorphism occurs. 2. Dynamic metamorphism: caused by intense local stresses which break up rocks, sometimes reducing them to a fine powder. This method produces mylonite. 3. Regional metamorphism: the large-scale action of both heat and pressure, producing a wide range of new mineral assemblages. Regional metamorphism is always associated with orogenies and igneous intrusions. 4. Retrograde metamorphism: any kind of metamorphism that produces rocks of...
Asked in Geology
What is metasomatism?
Metasomatism is part of the process the rocks undergo when they change from one form to another. It comes after the recrystallization and neomorphism processes. It is the chemical alteration of a rock by hydrothermal fluids. Broadly, reaction of rock/minerals with hot water A form of metamorphism -Most metamorphism is closed system -Metasomatism is an open system •Reacts with volatiles, removes solubles •Serpentinization •Skarns ...
Asked in Geology
Compare contact thermal metamorphism and regional dynothermal metamorphism and the types of rocks that result from each?
Contact metamorphism occurs locally, next to igneous intrusions and along fractures that were in contact with hydrothermal fluids. Regional metamorphism occurs over very large areas, such as deep within the cores of rising mountain ranges, and generally occurs with the folding of rock layers. Both result in the formation of metamorphic rocks. ...
Asked in The Difference Between
What is the major difference between metamorphism and metasomatism?
Metamorphism is the solid-state recrystallization of pre-existing rocks due to changes in physical and chemical conditions, primarily heat, pressure, and the introduction of chemically active fluids. Mineralogical, chemical and crystallographic changes can occur during this process. Changes at or just beneath Earth's surface due to weathering and/or diagenesis are not classified as metamorphism. Three types of metamorphism exist: contact, dynamic and regional. Metamorphism produced with increasing pressure and temperature conditions is known as prograde metamorphism. Conversely, decreasing temperatures and pressure characterizeretrograde metamorphism. Metasomatism is the chemical alteration...
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Asked in Earth Sciences
What is regional and contact metamorphism?
Regional metamorphism is a widespread precess involving both heat and directed pressure, and is involved in things like mountain building and activity deep with in the core. Contact metamorphism is local processes involving low to moderate pressure and high temperature. This type is adjacent to igneous intrusion and along fractures in contact with hydrothermal (hot!) fluids at mid-ocean ridges. ...
Asked in Exercise
Why is it important to drink fluids during exercise?
Toxins build up in the body during exercise, and fluids help flush them out. The body also sweats to keep cool, and fluids replace what is lost through sweating. ...
Rocks formed by changes in temperature and pressure or the presence of hot watery fluids?
Metamorphic Rocks are formed two ways: Regional Metamorphism Contact Metamorphism In regional, two plates collide and through pressure and friction to change igneous rock to metamorphic. In contact (more familiar to me) lava (hot liquid?) contacts any type of rock and doesn't not melt but sorta loosens it up so the crystals inside can rearrange. ...