Felsic magmas produce the most violent reputations. This is because felsic magmas are the most viscous and thus can hold the most gasses. These trapped gases can expand explosively when they reach lower pressure near the surface.
Felsic rocks have a lower melting point than mafic rocks and felsic magma has a lower temperature. In other words, felsic magma is not hot enough to melt mafic rock while mafic magma is hot enough to melt felsic rock.
Magmas with high viscosity and gas content tend to produce violent volcanic eruptions. High viscosity magmas are thicker and have more difficulty releasing gas, leading to pressure build-up and explosive eruptions. This often occurs with felsic or rhyolitic magmas.
Felsic rocks, such as granite, primarily originate from convergent plate boundaries where continental crust collides and undergoes partial melting to form silica-rich magmas. These magmas then cool and solidify to create felsic rocks.
Eruptions caused by magmas with high silica content, specifically felsic magma, are typically explosive in nature. This is due to the high viscosity of felsic magma, which traps gases until pressure builds up sufficiently to cause a violent release. As a result, these eruptions can produce pyroclastic flows and ash clouds, significantly impacting the surrounding environment. Examples include eruptions from volcanoes like Mount St. Helens and Mount Pinatubo.
Heat from the mantle melts part of the lower crust
Felsic magmas produce the most violent reputations. This is because felsic magmas are the most viscous and thus can hold the most gasses. These trapped gases can expand explosively when they reach lower pressure near the surface.
Felsic rocks have a lower melting point than mafic rocks and felsic magma has a lower temperature. In other words, felsic magma is not hot enough to melt mafic rock while mafic magma is hot enough to melt felsic rock.
Felsic magmas are formed through the partial melting of continental crust rocks, which are rich in silica and aluminum. This process typically occurs at subduction zones or during continental collisions. The high silica content of felsic magmas makes them viscous and prone to explosive eruptions.
Magmas with high viscosity and gas content tend to produce violent volcanic eruptions. High viscosity magmas are thicker and have more difficulty releasing gas, leading to pressure build-up and explosive eruptions. This often occurs with felsic or rhyolitic magmas.
Felsic rocks, such as granite, primarily originate from convergent plate boundaries where continental crust collides and undergoes partial melting to form silica-rich magmas. These magmas then cool and solidify to create felsic rocks.
pillow lava.... i think
Eruptions caused by magmas with high silica content, specifically felsic magma, are typically explosive in nature. This is due to the high viscosity of felsic magma, which traps gases until pressure builds up sufficiently to cause a violent release. As a result, these eruptions can produce pyroclastic flows and ash clouds, significantly impacting the surrounding environment. Examples include eruptions from volcanoes like Mount St. Helens and Mount Pinatubo.
Granite is the result of slow cooling processes of felsic magmas.
Felsic magma is very viscous, so if often gets "stuck" in plutons rather than erupting.
There are many different types of ignoues rock, but as a general description, mafic, felsic and intermediate rocks are formd from basaltic, granitic, and andesitic magmas respectively.
Mafic magmas generally have lower viscosity and gas content compared to felsic magmas, so they tend to flow more easily rather than explode. However, in certain conditions where gas build-up is high and pressure is released rapidly, mafic magma may still explode, but it is less common than with felsic magmas.