Explore the metamorphic processes of pure and impure carbonates in this comprehensive geology video. Learn about marble protoliths, pure carbonate metamorphism, quartz-bearing carbonate metamorphism, and impure calc-silicate metamorphism. Discover the calc-silicate formation sequence and understand P-T-CO2-dependent mineral transitions in marble. Gain valuable insights into the complex world of metamorphic rocks, supported by references to essential geology textbooks, online resources, and thin section atlases.