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Within magma there are volatile gases, predominantly water, but also carbon dioxide, sulphur dioxide etc. At the pressures within a magma chamber these gases are protogases, usually incorporated into the mineral structure in some way i.e. they have the potential to become gases at lower pressures, higher up, when the magma expresses itself as a volcano, where they are released. A magma chamber is not a static repository, but as some minerals created within the magma chamber are heavier (and crystallize at a higher temperature) than others, they sink, and form heavier rocks (e.g. gabbro). The rest of the melt will rise due to being less dense than the surrounding rock, because it is hotter, contains volatiles, and has lost heavier, crystallized minerals; this process continues until the heat is spent, or it emerges as a volcano.
The heat within the magma chamber has the minerals in a heightened state of excitement, therefore they will take up more space, and generally be less dense than their cold equivalents.
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Is liquid magma less dense or more dense?
Liquid magma is less dense than solid rock because it is a molten mixture of rock, minerals, and gases. When magma rises to the Earth's surface and cools, it solidifies into igneous rock.
Why does magma rises?
Mama rises when it is less dense than the rock surrounding it, and when the area around it allows free movement. The pressure allows the magma to convert form a liquid to a gas, which causes it to rise.
Is gabbro a porous rock?
No, gabbro is not a porous rock. Gabbro is a dense, coarse-grained igneous rock that is formed from the slow cooling of magma beneath the Earth's surface. It typically does not have significant porosity or permeability.
Mineral that affects the thickness of magma?
The mineral quartz affects the thickness of magma by increasing its viscosity. When quartz-rich magma cools and solidifies, it forms a dense and viscous rock, like granite. This high viscosity can result in explosive volcanic eruptions.
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.
Is magma more dense then rock?
No. Magma varies in density, but it will be less dense than a solid rock of the same composition.
Is liquid magma less dense or more dense?
Liquid magma is less dense than solid rock because it is a molten mixture of rock, minerals, and gases. When magma rises to the Earth's surface and cools, it solidifies into igneous rock.
Is magma less dense then the surrounding rock?
yes
Why does magma come to the surface?
Magma is less dense than the surrounding rock; as such, it will rise toward the surface.
Could property of magma that cause it to be forced upward towards earth surface?
Because magma is less dense than the surrounding solid rock, it is forced upward toward the surface. When magma reaches the surface and flows from volcanoes, it is called lava.
Why does magma in a volcano rise up to Earth's surface?
Magma rises because it is less dense than the rock around it.
Is the name given to molten rock below the Earth's surface.?
Magma. Magma rises towards the surface when it's less dense than rock around it. Otherwise, it collects in magma chambers and cools, forming igneous rock.
Liquid magma flow upward through the crust because it is less dence than the solid material around it?
Yes, that is correct. Magma is less dense than the solid rock around it, causing it to rise towards the surface through cracks and fractures in the Earth's crust. This movement occurs due to the buoyancy of the less dense magma compared to the denser surrounding rock.
Why magma rise soon after it forms?
Magma rises soon after it forms because it is less dense than the surrounding solid rock. The less dense magma is buoyant and is able to move upwards through cracks and fractures in the Earth's crust. This process of magma rising is driven by the pressure differences between the magma chamber and the surrounding rocks.
Why magma rise toward the surface?
Magma is less dense than rock and is buoyant due to this density difference. It will seek out any weaknesses in the rock above it to reach the surface.
What is the igneous rock that is dense and dark colored and forms from magma that is rich in iron and magnesium but poor in silica That has 8 letters?
The igneous rock you are referring to is basalt. It is a fine-grained, dense, and dark-colored rock that forms from low-silica magma rich in iron and magnesium.
How is the igneous rock changed to sedimentary rock?
Sedimentary rock goes deep in the Earth and reaches magma. It then melts and becomes part of the magma. Since the newly formed magma is less dense than the surrounding rock it is lighter than the surrounding rock and it goes up and cools. It then becomes an Igneous rock.
