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Partial melting of rock produces a magma. When rock is heated (by the heat emanating from the Earth's core) it DOES NOT all melt at the same time.
In the same way that adding antifreeze to water prevent it freezing, certain mixtures of elements (from the minerals making the rock) melt out first to form a liquid.
These melts flow together from between the mineral grains to make the magma.
This process of partial melting produces PARTICULAR magma compositions depending on the make up of the source rocks which is why magmas have definite chemistries and are different in different places.
Basalts are made from partial melts of the upper mantle, Andesites are magmas made from partial melts of the crust etc.
What else can I help you with?
What does not affect the formation of Magma?
Star Wars Movies do not affect the formation of magma.
What are two processes to cause metamorphism?
Two processes that can cause metamorphism are heat (from deep burial or nearby magma) and pressure (from burial or tectonic forces). These processes can change the mineralogy, texture, and sometimes the chemical composition of rocks, leading to the formation of metamorphic rocks.
What type of plate boundary triggers the formation of active volcanoes as magma rises beneath the surface?
Oceanic-to-Oceanic plate boundary triggers the formation of active volcanoes as magma rises beneath the surface.Transform plate boundaries trigger the formation of active volcanoes as magma rises beneath the surface.
Which of the following does not affect the formation of magma a.temperature b.pressure c.volume d.mineral composition?
Volume does not directly affect the formation of magma. Temperature, pressure, and mineral composition are the key factors that influence magma formation.
How are plutonism and volcanism different?
Plutonism refers to the formation of igneous rocks beneath the Earth's surface, through the cooling and solidification of magma. Volcanism, on the other hand, involves the eruption of magma from beneath the Earth's surface onto the surface, resulting in the formation of volcanic landforms like mountains and lava flows. Both processes are part of the larger geological cycle of rock formation and erosion.
Which two processes result in the formation of igneous rocks?
The two processes that result in the formation of igneous rocks are cooling and solidification of molten magma, and crystallization of magma within the Earth's crust or on the surface. These processes lead to the solidification of molten material, which then forms igneous rocks.
What does not affect the formation of Magma?
Star Wars Movies do not affect the formation of magma.
What two processes results in the formation of igneous rocks?
Igneous rocks are formed through two processes: cooling and solidification of molten rock (magma) on or beneath the Earth's surface (extrusive), and cooling and crystallization of magma deep beneath the Earth's surface (intrusive).
What are two processes to cause metamorphism?
Two processes that can cause metamorphism are heat (from deep burial or nearby magma) and pressure (from burial or tectonic forces). These processes can change the mineralogy, texture, and sometimes the chemical composition of rocks, leading to the formation of metamorphic rocks.
Which would mostly likely occur during the formation of igneous rock?
The basic processes involves in igneous rock formation are; 1. Melting (Magma, formation of molten substance). 2. Volcanicity (Eruption, movement of magma). 3. Cooling (Change in temperature). 4. Crystallization (Mineralization, formation of crystals and minerals). 5. Solidification (Consolidation into a solid mass to form igneous rock).
What type of plate boundary triggers the formation of active volcanoes as magma rises beneath the surface?
Oceanic-to-Oceanic plate boundary triggers the formation of active volcanoes as magma rises beneath the surface.Transform plate boundaries trigger the formation of active volcanoes as magma rises beneath the surface.
Which of the following does not affect the formation of magma a.temperature b.pressure c.volume d.mineral composition?
Volume does not directly affect the formation of magma. Temperature, pressure, and mineral composition are the key factors that influence magma formation.
How are plutonism and volcanism different?
Plutonism refers to the formation of igneous rocks beneath the Earth's surface, through the cooling and solidification of magma. Volcanism, on the other hand, involves the eruption of magma from beneath the Earth's surface onto the surface, resulting in the formation of volcanic landforms like mountains and lava flows. Both processes are part of the larger geological cycle of rock formation and erosion.
What does NOT play a role in magma formation?
One factor that does not play a role in magma formation is the Earth's rotation. Magma formation is primarily influenced by factors such as temperature, pressure, composition of the rock, and the presence of volatiles (such as water and gases) in the mantle.
What is the process called for mineral formation from magma?
The process is called crystallization. It involves the cooling and solidification of magma, leading to the formation of minerals as atoms within the magma arrange themselves into a crystalline structure.
What are the processes involved in the rock cycle?
The rock cycle involves three main processes: 1) Formation of rocks through cooling and solidification of magma or lava, 2) Transformation of rocks through heat and pressure, and 3) Breakdown of rocks through weathering and erosion, leading to the formation of new rocks. These processes continuously interact and recycle rocks on Earth's surface.
What are four processes that result in the formation of minerals?
The four processes that result in the formation of minerals are: 1. Crystallization from Magma 2. Precipitation 3. Pressure and Temperature 4. Hydrothermal Solutions
