7 Written questions
6 Multiple choice questions
- subduction, convergent
- >50% SiO2, gooey, highly viscous, becomes explosive, convergent system associated with continental crust formation.
6 True/False questions
What is divergent? → plates moving toward one another
Igneous rocks distribution? → solidification of magma or lava
What is mafic lava/magma? → <50% SiO2, very fluid, non-explosive, quiet, low viscosity, divergent associated with oceanic crust.
Importance of igneous rocks? → building materials, ores
Mafic rocks are also generated within the __ crust. → oceanic
Igneous rocks compose __% of basement rock. 85% is metamorphic. → solidification of magma or lava