Petrology of Igneous Rocks

This document presents an overview of igneous petrology and the classification of igneous rocks. It outlines the main classification approaches, including genetic, textural, chemical, and mineralogical systems. The document also explains methods used for the chemical analysis of rocks and introduces fundamental concepts in igneous petrology, such as saturation, variation diagrams, and the role of major and trace elements in interpreting the origin and evolution of igneous rocks.