- a discontinuity in rock sequence indicating interruption of sedimentation, commonly accompanied by erosion of rocks below the break.
- the interface between such strata.
Words nearby unconformity
How to use unconformity in a sentence
An unconformity thus records movements of the crust and a consequent break in the deposition of the strata.
As shown in Figure 207, a strong unconformity (nm´, Fig. 207) parts the schists and the Algonkian.
Such an erosion surface, called an “unconformity,” marks a gap in the geological record of the district where it occurs.
An unconformity may indicate that the beds below it have at some time been raised above the sea and have been eroded.
If beds of rock may be regarded as leaves in the volume of geologic history, an unconformity marks a gap in the record.