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Q: What are the three primary types of igneous rocks based on their occurrence and position in the Earth's crust?
  • A. Felsic, intermediate, and mafic rocks
  • B. Plutonic, volcanic, and dikes
  • C. Granite, basalt, and peridotite
  • D. Silicic, granodiorite, and dacite
Correct Answer: Option B - Igneous rocks–The earth's interior has extremely high temperature. The rock are in molten state and are known as magma. The rocks formed by cooling and solidifying of magma are known as igneous rocks. These rocks may be further classified as: • Volcanic rocks → Basalt, trap • Hyperbyssal rocks → Quartz, dolerite and gneiss • Plutonic rocks → Granite, diorite The three primary types of igneous rocks are based on their occurrence and position in Earth's crust.
B. Igneous rocks–The earth's interior has extremely high temperature. The rock are in molten state and are known as magma. The rocks formed by cooling and solidifying of magma are known as igneous rocks. These rocks may be further classified as: • Volcanic rocks → Basalt, trap • Hyperbyssal rocks → Quartz, dolerite and gneiss • Plutonic rocks → Granite, diorite The three primary types of igneous rocks are based on their occurrence and position in Earth's crust.

Explanations:

Igneous rocks–The earth's interior has extremely high temperature. The rock are in molten state and are known as magma. The rocks formed by cooling and solidifying of magma are known as igneous rocks. These rocks may be further classified as: • Volcanic rocks → Basalt, trap • Hyperbyssal rocks → Quartz, dolerite and gneiss • Plutonic rocks → Granite, diorite The three primary types of igneous rocks are based on their occurrence and position in Earth's crust.