Table of Contents
What is the four types of magma?
Because many of the properties of a magma (such as its viscosity and temperature) are observed to correlate with silica content, silicate magmas are divided into four chemical types based on silica content: felsic, intermediate, mafic, and ultramafic.
Why are there so many different types of magma?
Why are there so many different types of magmas? Because it depends on the source, how it interacts with its surroundings (assimilation), and whether crystals sink as they form (partial melting and magma mixing).
What are the three ways to generate magma?
There are three principal ways rock behavior crosses to the right of the green solidus line to create molten magma: 1) decompression melting caused by lowering the pressure, 2) flux melting caused by adding volatiles (see more below), and 3) heat-induced melting caused by increasing the temperature.
Why are there so many different types of magma chegg?
Question: Why are there so many different types of magma? The process of partial melting tends to form magmas which are more mafic. Magmas may assimilate different chemicals once they reach the surface.
What are the 8 major elements found in most magma?
Magma compositions vary, but will have eight main elements in different proportions. The most abundant elements are oxygen and silicon, followed by aluminum, iron, calcium, sodium, magnesium, and potassium. These eight elements are also the most abundant in Earth’s crust (Figure 7.2).
What are the four kinds of magma?
the four major types of magmas: felsic, intermediate, mafic, and ultramafic. the importance and affect of magma viscosity (how thick it is) in magma movement and shape of whatever structure is formed.
What type of magma is most likely erupt explosively?
A high viscosity magma will flow more readily and easily than a low viscosity magma. Therefore the eruption will be explosive. A high viscosity magma will flow more readily and easily than a low viscosity magma.
What are examples of magma?
Basic Types of Magma Andesitic Magma. When it comes to its features, heat, fluidity, and gas content, andesitic magma is considered to be in the middle. Basaltic Magma. Felsic Magma. Intermediate Magma. Mafic Magma. Rhyolitic Magma. Ultramafic Magma.
Which are some of the characteristics of mafic magma?
Mafic magmas are low in silica and contain more dark, magnesium and iron rich mafic minerals, such as olivine and pyroxene. Dissolved gases become trapped by thick magma and the magma chamber begins to build pressure.