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At divergent boundaries is what metamorphism results from extrusion of basaltic lava?
A metamorphic rock formed from Basalt is Schist. a.k.a. Green Schist
Which kind of metamorphism occurs next to an intrusion of molten magma?
Contact metamorphism occurs next to an intrusion of molten magma. This type of metamorphism happens when hot magma comes into contact with existing rock, causing the rock to undergo changes in mineralogy and texture due to the heat and pressure.
In which type of rock metamorphism is heat the dominant factor?
Contact metamorphism is the type of rock metamorphism where heat is the dominant factor. This occurs when rocks come into contact with a heat source, such as magma, causing them to recrystallize and change without melting.
What kind of rock is formed by metamorphism of limestone or dolomite?
marble
Bural metamorphism occurs when hot magma or lava comes in contact with rock?
Burr metamorphism, also known as contact metamorphism, results from high temperatures and pressure generated when magma or lava intrudes into existing rock. This process alters the mineralogy and texture of the surrounding rock without melting it completely. The heat and chemical alterations from the intrusive magma result in the formation of new minerals and rock structures near the contact zone.
Why are metamorphic rocks formed by contact metamorphism usually not as dense as those formed by reg?
Because in contact the rock actually comes in contact with magma, this joins with the rock, so when it cools and become igneous rock, it's denser. In regular, or regional, the rock is formed from intense heat and pressure, but does not actually come in contact with magma.
Why are metamorphic rocksformed by contact metamorphism usually not as dense as those formed by regional metamorphism?
Because contact metamorphism usually occurs because of an increase in temperature. In contrary, regional metamorphism is usually the result of compression. Compression makes a rock more dense.
At divergent boundaries is what metamorphism results from extrusion of basaltic lava?
A metamorphic rock formed from Basalt is Schist. a.k.a. Green Schist
What rocks are formed by magma?
Intrusive igneous rocks are formed by magma. Magma can also cause the contact metamorphism of rock that it is intruded into.
Why are metamorphic rocks formed by contact metamorphism usually not as dense as those formed by regional metamorphism?
Contact metamorphism does not cause profound compaction, which is the reduction in size of the spaces between mineral particles due to increases in pressure. Regional metamorphism causes compaction and possibly recrystallization, increasing the density of the rock.
What is a nonfoliated rock formed by contact metamorphism of a shale or mudstone?
A nonfoliated rock formed by contact metamorphism of a shale or mudstone is called hornfels. It usually has a fine-grained texture and lacks the layering characteristic of foliated rocks. Hornfels forms when the parent rock is subjected to high temperatures and pressures near a magma intrusion.
Why are metamorphic rocks formed by contact metamorphism usually not dense or resistant?
Metamorphic rocks formed by contact metamorphism are usually not dense or resistant because they are formed at relatively low pressures and temperatures compared to regional metamorphism. The short duration of the heating process in contact metamorphism does not allow for the recrystallization and reorganization of mineral structures that contribute to denser and more resistant rocks. Additionally, the presence of fluids and gases in contact metamorphism can facilitate alteration and weakening of the original rock material.
What is the difference between contact and metamorphism?
Contact metamorphism is metamorphism that happens when preexisting rock comes in contact with a molten rock or magma and it melts locally.Regional metamorphism is metamorphism happens when two plates collide the plate that subducts can melt by the heated area.
What is the difference between regional and contact metamorphism?
Regional metamorphism is the creation of metamorphic rock from large geographically significant processes like plate tectonics. Contact metamorphism is the creation of metamorphic rock from the proximity of an existing rock to a heat source provided by a plutonic intrusion.
Which kind of metamorphism occurs next to an intrusion of molten magma?
Contact metamorphism occurs next to an intrusion of molten magma. This type of metamorphism happens when hot magma comes into contact with existing rock, causing the rock to undergo changes in mineralogy and texture due to the heat and pressure.
Is metasedimentary rock intrusive?
No, its a metamorphic rock formed by metamorphism of sedimentary rock.
Describe two ways a rock can undergo metamorphism?
Either by melting or by deposition.
