GENERAL GEOLOGY

Detailed explanation-1: -Unconformities are a type of geologic contact-a boundary between rocks-caused by a period of erosion or a pause in sediment accumulation, followed by the deposition of sediments anew.

Detailed explanation-2: -Following on the Law of Original Horizontality and Law of Superposition, both Hutton and Lyell recognized erosional boundaries preserved between rock layers that represent gaps in the geologic record. They named these gaps unconformities.

Detailed explanation-3: -An unconformity is a gap in the rock record usually caused by an erosional surface becoming buried by the deposition of younger rocks. Other Means of Determining Relative Age. The unconformity is called a disconformity when horizontal sedimentary rocks overlie horizontal sedimentary rocks.

Detailed explanation-4: -Disconformity. A disconformity is an unconformity between parallel layers of sedimentary rocks which is a period of erosion or non-deposition.