9. Which of the following is NOT a type of unconformity?
A. Angular
B. Disconformity
C. Nonconformity
D. Uniformity
10. When sedimentary rocks deposited in flat layers are left undisturbed it follows the statement in which of the given principles?
A. Cross-cutting Relationship B. Fauna Succession
C. Original Horizontality
D. Superposition
11. What can be inferred if you find an outcrop of mud cracks in gray shale? It can be inferred that the area was once
A. a beach
B. a desert
C. a tidal flat
D. deep under the ocean​