Answer: disconformities

AnswerCrossword Clue
disconformitiesLack of conformity
disconformitiesDISCONFORMITY, an unconformity in which the beds above the unconformity are parallel to the beds below the unconformity
disconformitiesA break in a sedimentary sequence that does not involve a difference of inclination between the strata on each side of the break