What is metasomatism? Describe a typical field occurrence of contact metamorphism. What typically causes it? How might the contact metamorphic rocks vary spatially, and over what scales? What kinds of textures are typical of contact metamorphism? Describe a typical field association of regional metamorphism. What typically causes it? How might regional metamorphic rocks vary spatially, and over what scales?
What is metasomatism? Describe a typical field occurrence of contact metamorphism. What typically causes it? How might the contact metamorphic rocks vary spatially, and over what scales? What kinds of textures are typical of contact metamorphism? Describe a typical field association of regional metamorphism. What typically causes it? How might regional metamorphic rocks vary spatially, and over what scales?