Percentages of continental areas that were flooded during a transgression plotted on the corresponding hypsometric curves may be used to distinguish between (1) substantial posttransgressive change in continental hypsometries and (2) a transgression caused by a sea-level rise followed by little change in continental hypsometries. The method, applied to percentages of flooding during Albian, late Campanian to early Maestrichtian, Eocene, and Miocene time intervals, reveals substantial changes in continental hypsometries, especially in Africa, North America, Australia, and Europe. The data also appear to give a rough approximation of the real elevation of sea level for the same four time intervals.

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