If You Observe an Angular Unconformity, You Would Infer That

Multiple Choice

If you observe an angular unconformity, you would infer that the region had experienced ______.

A) deposition in shallow water, uplift or lowering of sea level enough to expose the rocks to erosion and non- deposition for a period of time, and subsequent resubmergence of the remaining sedimentary units where they experience new deposition
B) intrusion of igneous rocks into a depositional setting, forcing the sedimentary layers upward and possibly deforming them, followed by subsidence of the remaining sedimentary layers and renewed deposition
C) uplift and tilting of sedimentary units that exposes them to erosion over a period of time with subsequent renewed deposition
D) deposition of sedimentary layers on crystalline igneous or metamorphic rocks that are exposed at the surface of the earth