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A cross-section showing bedding and structure as it is assumed to have been at some past time. May refer to a seismic section on which one horizon has been flattened, assuming that this horizon was laid down horizontally and therefore that the resulting section shows deeper structure at the time of deposition of the flattened horizon. Compaction because of overburden and other changes subsequent to deposition are often ignored. Also called a palinspastic or restored section.