Juan Ignacio Baceta Caballero, Victoriano Pujalte Navarro, Aitor Payros Aguirre
During the period of sub-aerial exposure subsequent to the mid-Paleocene sea level fall, a set of paleokarstic features were generated in upper Danian lagoonal limestones of the Alava province. The most interesting of them all, and potentially the more meaningful, is a horizontal dissolution horizon, possibly recording the position of the upper surface of a paleophreatic zone. If that possibility is correct, the magnitude of the mid-Paleocene sea level fall would be narrowly constrairied to circa 40 m, a more realistic figure than those previously estimated for this event.
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