The Zumaya section in Spain: A possible global stratotype section for the Selandian and Thanetian Stages
Schmitz, Birger; Molina, Eustoquio; von Salis, Katharina
published: Jan 15, 1998
ArtNo. ESP026003601004, Price: 29.00 €
The Paleocene Working Group was established in September 1993, its aim being to define Global Stratotype Sections and Points (GSSP's) for the Selandian and Thanetian stages (Schmitz 1994; and accompanying symposium proceedings in GFF, v. 116, p. 39-67). Multiparameter stratigraphical records through sections in the historical stratotype areas in Denmark (Selandian) and England (Thanetian) as well as in Spain, Israel, Egypt, and Tunisia, are being prepared by various groups. One of the most promising sections for providing GSSP's for the Selandian and Thanetian stages is the section at Zumaya in the Basque region of northern Spain (Molina 1994). This section is easily accessible and consists of an expanded sequence (about 160 m thick) with a biostratigraphically complete Paleocene record. The historical Paleocene stage boundaries in the North Sea area were defined at unconformities corresponding to sequence boundaries (Hardenbol 1994, Knox 1994a). In the Basque region, there are many Paleocene sections that were deposited in a variety of sea-floor conditions and water depths (carbonate platform to outer slope). Studies of these sections and the Zumaya section have established a sequence stratigraphic framework (Pujalte et al. 1994), which can be used for further correlations with the original North Sea stratotypes. The Zumaya section also provides an important link between these sections and the expanded Tethyan sections.