سوبيلانا
سوبيلانا
سوبيلانا
سوبيلانا
Layers of marl, limestone and sandstone (flysch sedimentary rock) at Sopelana beach near Bilbao in the Basque reqion of Spain. The rocks are of Cretaceous and Paleogene age. The Cretaceous-Paleogene (K-Pg) stratigraphic boundary is seen here.

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