Chapter 7 (Metamorphic Rocks) - Include the textbook page number. (2) Compare and contrast the characteristics of metamorphic rocks with those of igneous and sedimentary rocks. (3) What important variables cause changes associated with regional metamorphism? With contact metamorphism? With ocean ridge metamorphism? (4) Make a series of sketches showing the changes in texture that occur with regional metamorphism of (a) slate, (b) sandstone, (c) conglomerate, and (d) marble. (5) Define foliation and explain the characteristics of (a) slaty cleavage, (b) schistosity, (c) gneissic layering, and(d) mylonitic texture. (8) Make a generalized flowchart showing the origin of the common metamorphic rocks..