summarize what have learned in Chapter 11- Metamorphism, specifically the topic Principal metamorphic rocks and their properties. (100 words)

Chapter 11, Metamorphism, focuses on the principal metamorphic rocks and their properties. It explains how these rocks, including slate, schist, gneiss, and marble, are formed through the process of metamorphism. This process involves the transformation of existing rocks under intense heat and pressure conditions. Each rock has unique properties; slate is fine-grained and foliated, schist is medium to coarse-grained and strongly foliated, gneiss is coarse-grained with alternating light and dark bands, and marble is non-foliated, crystalline and derived from limestone. The chapter emphasizes the importance of these rocks in understanding Earth's geological history.