Characteristics related to grain size of rocks are called as texture. Here you can know more about texture of Greywacke and Basaltic Trachyandesite. Texture of Greywacke is whereas that of Basaltic Trachyandesite is . Based on the texture of rocks, they are used for various purposes. Get detailed information about Greywacke vs Basaltic Trachyandesite texture, color, appearance and maintenance in the next section.