Classification of Igneous Rocks: Intrusive vs. Extrusive

The video tutorial explains the classification of igneous rocks, focusing on the differences between extrusive (volcanic) and intrusive (plutonic) rocks. Volcanic rocks are classified based on silica content, while plutonic rocks are named according to their mineral composition. The tutorial also discusses the types of igneous rocks found at the Earth's surface, influenced by geological settings like mid-ocean ridges and subduction zones.

What are the two main types of igneous rocks and how do they differ?

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How can you determine if an igneous rock is extrusive or intrusive?

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What is the significance of silica content in classifying igneous rocks?

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Describe the mineral composition differences between rhyolite and basalt.

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What are the naming conventions for plutonic igneous rocks?

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How do the environments of formation affect the types of igneous rocks found at the surface?

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What role do subduction zones play in the formation of igneous rocks?

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