MODULE 3 - Plutonism and Volcanism Flashcards
What is the most abundant element composition in magma?
Oxygen
What is the tendency of the magma with high silica content?
It tends to be more viscous
effect of the magma’s viscosity on volcanic eruption?
It becomes more explosive.
What best describes magma?
a molten rock
A geologic process that takes place inside cracks and infiltrates the upper mantle allowing liquids and gases to reach the surface of the earth?
Volcanism
Why does partial melting of rocks occur on the earth’s mantle?
Because rocks are pure materials.
What rock is produced when the process of crystallization takes place inside the
crust?
Plutonites
What are the factors that affect the melting of rocks?
temperature, pressure and mineral components of a rock
What geologic process occurs on the earth’s surface correlated with flow and transportation of igneous material?
Volcanism
What best describes how pressure affects the melting of rocks?
The higher the pressure, the higher the melting points.
A process where magma infiltrates the crust but fails to make it to the surface
Plutonism
An igneous rock formation is produced when the process of crystallization takes place on the Earth’s surface
Volcanites
What condition is ideal for metallogenesis?
magma infiltrates, fail to make it to the Earth’s surface and magma differentiation occurs.
What happens during flux melting?
Rock’s melting point is reduced by adding some water or carbon dioxide.
What temperature and pressure conditions allow magma to form?
low pressure and high temperature
