A break or gap in the geologic record, such as an interruption in the normal sequence of deposition of sedimentary rocks, or a break between eroded metamorphic rocks and younger sedimentary rocks
The relationship where the younger upper strata do not follow the dip and strike of older underlying strata
a surface of erosion or non-deposition that separates younger strata from older rocks This usually occur during periods of uplift or falls in sea level
{i} nonconformity, lack of accordance with general standards; lack of continuity between strata of sediment (indicating that the rate of deposition was not constant)
A gap or break in the stratigraphic sequence due to either nondeposition or erosion
A discontinuity in the succession of rocks, containing a gap in the geologic record A buried erosion surface See also nonconformity
The surface that separates two sedimentary sequences of different ages; it represents a gap in the geological record when there was erosion and/or no deposition There is often an angular discordance between the two sequences