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Questions and Answers
What happens to the contrasts in temperature, density, and viscosity when the difference in chemical composition between two magmas is smaller?
What happens to the contrasts in temperature, density, and viscosity when the difference in chemical composition between two magmas is smaller?
- They remain the same
- They decrease (correct)
- They increase
- They become unpredictable
Which of the following is NOT an evidence for magma interaction mentioned in the text?
Which of the following is NOT an evidence for magma interaction mentioned in the text?
- Crystal Formation (correct)
- Reverse Zoning in Minerals
- Glass inclusions
- Disequilibrium Mineral quartz or olivine
What can occur if a magma assimilates crustal rocks that have a different composition from the magma?
What can occur if a magma assimilates crustal rocks that have a different composition from the magma?
- The magma's chemical composition changes (correct)
- The magma becomes more homogeneous
- The magma becomes less viscous
- The magma's chemical composition remains unchanged
In which state is magma when processes of differentiation such as liquid immiscibility are operational?
In which state is magma when processes of differentiation such as liquid immiscibility are operational?
What happens when a mixture of two different components in a magma becomes immiscible at a lower temperature?
What happens when a mixture of two different components in a magma becomes immiscible at a lower temperature?
What term is used when a magma absorbs part of the rock through which it passes?
What term is used when a magma absorbs part of the rock through which it passes?
What are the major mechanisms and vehicles of magmatic differentiation?
What are the major mechanisms and vehicles of magmatic differentiation?
Which elements are the principle components of igneous rocks according to the text?
Which elements are the principle components of igneous rocks according to the text?
What is the main focus of magmatic processes?
What is the main focus of magmatic processes?
Which process involves the modification of melt composition after melting?
Which process involves the modification of melt composition after melting?
What are some secondary elements present in igneous rocks according to the text?
What are some secondary elements present in igneous rocks according to the text?
Which processes are involved in magma evolution/differentiation according to the text?
Which processes are involved in magma evolution/differentiation according to the text?
What process is the least common for generating magma?
What process is the least common for generating magma?
What is the first major division of magma types based on?
What is the first major division of magma types based on?
Which type of magmas are the product of large degree melting?
Which type of magmas are the product of large degree melting?
What will happen to the incompatible elements in the melt with further melting?
What will happen to the incompatible elements in the melt with further melting?
What causes distinct types of magmas based on geological settings?
What causes distinct types of magmas based on geological settings?
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