Question 27
A geologist uses particle size, texture and permeability to infer rock formation. Descriptions: W: easily split layers of 0.0001-cm-diameter particles cemented together; X: glassy black rock with shell-shaped fractures; Y: interlocking 0.5-cm crystals of various colors; Z: alternating light and dark mineral bands. Which row identifies Metamorphic; Igneous; Sedimentary rocks?
