B. Dark igneous dike
C. Erosion to form canyon
D. Unconformity
E. Reddish igneous dike
https://myasucourses.asu.edu/courses/1/2013SummerA-X-GLG103-42833-42834/assessment/8f3c9f3e34924f71a34f7287212e8321/ch07_cross_section1.jpg
the link is the diagram!
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