Igneous and metamorphic petrology represent two fundamental branches of geological science that elucidate the formation, transformation, and evolution of Earth’s solid materials. Igneous petrology ...

Igneous rock (derived from the Latin word ignis meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the ...

These rocks really shouldn't be there. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The surprising discovery of volcanic, "igneous," rocks by ...