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Steam under tremendous pressures, possibly leading to explosive volcanic eruptions as it rises and expands.
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∙ 15y ago
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Basalt is generated by?
partial melting of mantle rocks
What observation has been made about the age of the basalt that forms a mid ocean ridge?
New magma of basalt composition emerges at and near the axis because of decompression melting in the underlying Earth's mantle.
What type of rocks form from melting and cooling?
These are igneous rocks. They may form from lava at the Earth's surface, like basalt, or from magma beneath the ground, like granite.
Is basalt a gas?
No. Basalt is solid rock.
Is basalt intrusive?
No. Basalt is an extrusive igneous rock.
Melting of wet basalt under pressure can consistently produce?
andesite
What is the melting point of basalt?
specific heat of basalt is 0,2
Basalt is generated by?
partial melting of mantle rocks
What observation has been about the age of the basalt that forms a mid ocean ridge?
New magma of basalt composition emerges at and near the axis because of decompression melting in the underlying Earth's mantle.
Which two processes commonly generate magma?
decompression melting and wet melting (the addition of volatiles) :)
What observation has been made about the age of the basalt that forms a mid ocean ridge?
New magma of basalt composition emerges at and near the axis because of decompression melting in the underlying Earth's mantle.
Why are basalt and granite the most common rocks of the crust?
Because they are the product of eutectic melting and density separation of the melts.
How can quartz be used in your everyday lives?
Basalt is a fine-grained grey to black extrusive volcanic rock that forms after the rapid cooling of lava at the surface of a planet. On the earth, most basalt magmas have formed by melting decompression of the mantle. Basalt can be used in building blocks for construction, making cobblestones from columnar basalt and making of statutes.
Why does alkalic basalt contain less silica than tholeiites?
The magma that forms alkalic basalt forms under conditions with a higher fraction of partial melting that the magma that forms tholeiitic basalt. This means that the resulting alkalic melt contains a higher percentage of the minerals with a low silica content.
Dark regions on the surface of the moon are generally?
Dark regions on the surface of the moon are generally basalt flows. Basalt is a dark rock. The flows have been caused by rock melting due to heat generated by meteor impacts.
What volcanoes are made of basaltic lava?
Stratovolcanoes, also called composite volcanoes are generally not made of basalt. While they may occasionally produce basalt, much of their material is andesite or dacite.
How many degrees celsius an igneous rock can withstand?
Basalt, an igneous rock, has a melting point of between 1100 and 1200 degrees C.
