Steam under tremendous pressures, possibly leading to explosive volcanic eruptions as it rises and expands.
partial melting of mantle rocks
New magma of basalt composition emerges at and near the axis because of decompression melting in the underlying Earth's mantle.
These are igneous rocks. They may form from lava at the Earth's surface, like basalt, or from magma beneath the ground, like granite.
No. Basalt is solid rock.
No. Basalt is an extrusive igneous rock.
andesite
specific heat of basalt is 0,2
partial melting of mantle rocks
New magma of basalt composition emerges at and near the axis because of decompression melting in the underlying Earth's mantle.
decompression melting and wet melting (the addition of volatiles) :)
New magma of basalt composition emerges at and near the axis because of decompression melting in the underlying Earth's mantle.
Because they are the product of eutectic melting and density separation of the melts.
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.
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 basalt flows. Basalt is a dark rock. The flows have been caused by rock melting due to heat generated by meteor impacts.
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.
Basalt, an igneous rock, has a melting point of between 1100 and 1200 degrees C.