GENERAL GEOLOGY

Detailed explanation-1: -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-2: -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-3: -Geologists call this phenomenon the Great Unconformity. Although unconformities, or gaps in the rock record, are common, the Great Unconformity earns its title. It represents a gap of hundreds of millions to over a billion years.

Detailed explanation-4: -unconformity is a gap in the geologic record. An unconformity shows where some rock layers have been lost because of erosion. To date rock layers, geologists first give a relative age to a layer of rock at one location and then give the same age to matching layers at other locations.

Detailed explanation-5: -The term unconformity is described as the gap between rock masses that indicate a loss of some rock layers due to erosion or lack of deposition. This happens when the sediment deposition was not continuous due to erosion or there were no sediments deposited in a particular area.