Explore the fundamental concept of Bowen's Reaction Series in this 21-minute lecture on petrology. Delve into the crystallization sequence of magma as it cools, understanding how different minerals form at various temperatures and pressures. Learn about the discontinuous and continuous reaction series, and how they relate to the formation of igneous rocks. Examine the significance of this series in interpreting rock textures, compositions, and geological processes. Gain insights from Dr. Harel Thomas, Professor of Applied Geology at Doctor Harisingh Gour Vishwavidyalaya, as he breaks down this crucial topic for undergraduate and postgraduate geology students. Part of a comprehensive 16-week petrology course, this lecture provides essential knowledge for understanding igneous rock formation and classification.