What are three methods of intrusive igneous rock formation?
Igneous rock intrusions occur when molten magma migrates up through fissures, cracks, and voids in overlying rock strata (often called country rock). They form structures named depending on the direction of how they cool, horizontal or vertical. There are sills, dikes, batholiths, laccoliths, cupolas, and others.
Answer and Explanation:
There are three main processes that lead to igneous intrusions: mid-ocean ridges (spreading zones) where a tectonic plate adds new matter; subduction...
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from General Studies Earth & Space Science: Help & ReviewChapter 5 / Lesson 4
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