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Why is the lava mostly mafic at divergent plate boundaries and intermediate and felsic at convergent plate boundaries?
Mafic magma has extremely high ferromagnesian content, produced by decompression melting. As the plates move apart, mantle rises to fill the void. As it melts, it forms mafic magma. Where plates are meeting, the compression of crust forms magma with higher silica content, thus forming felsic and intermediate magmas.
What else can I help you with?
What plate boundary does felsic rock come from?
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.
Is quartz monzonite mafic or felsic?
Quartz monzonite ranges from intermediate to felsic.
Are pyroclastic flows felsic or mafic?
Pyroclastic flows can be of any composition, but are more commonly felsic or intermediate.
What are intermediate rocks?
are a mixture of both mafic and felsic rocks
classificatio of igneous rock?
felsic, intermediate, mafic, and ultramafic.
What plate boundary does felsic rock come from?
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.
Is quartz monzonite mafic or felsic?
Quartz monzonite ranges from intermediate to felsic.
Are pyroclastic flows felsic or mafic?
Pyroclastic flows can be of any composition, but are more commonly felsic or intermediate.
What are some different types of magma?
Mafic intermediate and Felsic
What are intermediate rocks?
are a mixture of both mafic and felsic rocks
classificatio of igneous rock?
felsic, intermediate, mafic, and ultramafic.
Definition for andesitic composition?
Andesitic composition refers to a type of igneous rock that is intermediate in composition between basalt and rhyolite. It typically contains minerals such as plagioclase feldspar, amphibole, and pyroxene. Andesitic rocks are commonly found in volcanic arcs and are associated with convergent plate boundaries.
Are all rocks either mafic or felsic?
No. First of all, the terms mafic and felsic generally only apply to igneous rock. even among igneous rocks, mafic and felsic are just ranges on a "spectrum" of composition. Other classifications and examples include ultramafic (peridotite), intermediate (andesite), and intermediate-felsic (dacite).
Is monzonite felsic or mafic?
Monzonite is an intermediate rock.
Is pyroclastic material usually thrown from volcanoes that eject felsic lava?
It is often a product of intermediate material as well, but yes, it is often felsic.
What crystallizes from an intermediate lava and is moderately gray or green in color?
felsic rock
Is sandstone felsic or mafic?
Neither. The terms mafic and felsic refer to the composition of igneous rocks, which are dominated by silicate minerals. Marble is a metamorphic rock composed of carbonate minerals. The terms mafic and felsic do no apply to it.
