answersLogoWhite

0

Igneous rocks are primarily classified into two subcategories: intrusive (or plutonic) and extrusive (or volcanic) rocks. Intrusive igneous rocks, such as granite, form from magma that cools slowly beneath the Earth's surface, allowing large crystals to develop. In contrast, extrusive igneous rocks, like basalt, form when magma erupts onto the surface and cools quickly, resulting in smaller crystals. These distinctions are based on the location of formation and cooling rates.

User Avatar

AnswerBot

1mo ago

What else can I help you with?