What is correlative conformity?

surface that marks a change in shoreline trajectory from highstand normal regression to forced regression. It is the oldest marine clinoform associated with offlap. In the deep-water setting, this correlative conformity is commonly placed at the base of the basin-floor submarine fan complex. Where offlap is not preserved, this surface marks the change from an increase (upstepping) to a decrease (downstepping) in the elevation of coastal facies.