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Where is the Global Boundary Stratotype Section and Point for the Cretaceous-Paleogene boundary?
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Tertiary Period
Gypsum cones, which resulted from the evaporation of the Mediterranean Sea during the Messinian Salinity Crisis, in the Sorbas basin, Spain.
The Global Boundary Stratotype Section and Point (GSSP) for the Cretaceous-Paleogene (K-P) boundary—formerly known as the Cretaceous-Tertiary (K-T) boundary—is located in Tunisia, specifically near the town of El-Kef. This boundary marks the transition between the Cretaceous Period and the Paleogene Period and is estimated to be 66 million years old.1