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Authors: Molina, E.* 
Alegret, L.* 
Apellaniz, E.* 
Bernaola, G.* 
Caballero, F.* 
Dinarès-Turell, J.* 
Hardenbol, J.* 
Heilmann-Clausen, C.* 
Larrasoaña, J. C.* 
Luterbacher, H.* 
Monechi, S.* 
Ortiz, S.* 
Orue- Etxebarria, X.* 
Payros, A.* 
Pujalte, V.* 
Rodríguez-Tovar, F. J.* 
Tori, F.* 
Tosquella, J.* 
Uchman, A.* 
Title: The Global Stratotype Section and Point (GSSP) for the base of the Lutetian Stage at the Gorrondatxe section, Spain
Journal: Episodes 
Series/Report no.: 2/34 (2011)
Publisher: Geological Society of India
Issue Date: Jun-2011
Keywords: Stratotype
Ypresyan-Lutenian boundary
Subject Classification03. Hydrosphere::03.01. General::03.01.06. Paleoceanography and paleoclimatology 
04. Solid Earth::04.04. Geology::04.04.08. Sediments: dating, processes, transport 
04. Solid Earth::04.04. Geology::04.04.10. Stratigraphy 
Abstract: The GSSP for the base of the Lutetian Stage (early/ middle Eocene boundary) is defined at 167.85 metres in the Gorrondatxe sea-cliff section (NW of Bilbao city, Basque Country, northern Spain; 43º22'46.47" N, 3º 00' 51.61" W). This dark marly level coincides with the lowest occurrence of the calcareous nannofossil Blackites inflatus (CP12a/b boundary), is in the middle of polarity Chron C21r, and has been interpreted as the maximumflooding surface of a depositional sequence that may be global in extent. The GSSP age is approximately 800 kyr (39 precession cycles) younger than the beginning of polarity Chron C21r, or ~47.8 Ma in the GTS04 time scale. The proposal was approved by the International Subcommission on Paleogene Stratigraphy in February 2010, approved by the International Commission of Stratigraphy in January 2011, and ratified by the International Union of Geological Sciences in April 2011.
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