1A surface of contact between two groups of unconformable strata.
More example sentences
- First, there are no late Cambrian rocks in many areas: they are represented by unconformities.
- Both overlie a pronounced angular unconformity and both are predominantly fluvial deposits.
- That unconformity is overlain by sandstones of the Puentelles Formation, dated as late Kasimovian based on its fossil flora.
Definition of unconformity in:
- The British & World English dictionary