Unconformity
Unconformity , noun
1.
Want of conformity; incongruity; inconsistency. — South
2.
(Geology) Want of parallelism between strata in contact.
With some authors unconformity is equivalent to unconformability; but it is often used more broadly, for example, to include the case when the parallelism of strata once conformable has been disturbed by faulting and the like.