GENERAL GEOLOGY

Detailed explanation-1: -A disconformity is an unconformity between parallel layers of sedimentary rocks which represents a period of erosion or non-deposition. Disconformities are marked by features of subaerial erosion. This type of erosion can leave channels and paleosols in the rock record.

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: -Put simply, an unconformity is a break in time in an otherwise continuous rock record. 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-4: -An unconformity is a boundary that is overlain by a sedimentary rock unit or extrusive igneous rock unit (lava flow or pyroclastic deposit) and represents a significant time gap in the geologic record between the rock units above and below.

Detailed explanation-5: -Angular Unconformities are those where an older package of sediments has been tilted, truncated by erosion, and than a younger package of sediments was deposited on this erosion surface.