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Uchman, A.
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Uchman, A.
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- PublicationRestrictedThe Global Stratotype Section and Point (GSSP) for the base of the Lutetian Stage at the Gorrondatxe section, Spain(2011-06)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;Molina, E.; Departamento de Ciencias de la Tierra, Universidad de Zaragoza, E-50009 Zaragoza, Spain ;Alegret, L.; Departamento de Ciencias de la Tierra, Universidad de Zaragoza, E-50009 Zaragoza, Spain ;Apellaniz, E.; Departamento de Estratigrafía y Paleontología, Universidad del País Vasco, E-48080 Bilbao, Spain ;Bernaola, G.; Departamento de Estratigrafía y Paleontología, Universidad del País Vasco, E-48080 Bilbao, Spain ;Caballero, F.; Departamento de Estratigrafía y Paleontología, Universidad del País Vasco, E-48080 Bilbao, Spain ;Dinarès-Turell, J.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Hardenbol, J.; Global Sequence, Chronostratigraphy Inc., 826, Plainwood Drive, Houston, Texas 77079-4227, USA ;Heilmann-Clausen, C.; Department of Earth Sciences, Aarhus University, Dk-8000, Aarhus C, Denmark ;Larrasoaña, J. C.; Instituto Geológico y Minero de España, Unidad de Zaragoza, E-50006, Zaragoza, Spain ;Luterbacher, H.; Museo Geológico, Seminario Conciliar, E-08007, Barcelona, Spain ;Monechi, S.; Dipartimento di Scienze della Terra, Università di Firenze, I-50121 Firenze, Italy ;Ortiz, S.; Departamento de Ciencias de la Tierra, Universidad de Zaragoza, E-50009 Zaragoza, Spain and Department of Earth Sciences, University College London, WC1E 6BT, London, UK ;Orue- Etxebarria, X.; Departamento de Estratigrafía y Paleontología, Universidad del País Vasco, E-48080 Bilbao, Spain ;Payros, A.; Departamento de Estratigrafía y Paleontología, Universidad del País Vasco, E-48080 Bilbao, Spain ;Pujalte, V.; Departamento de Estratigrafía y Paleontología, Universidad del País Vasco, E-48080 Bilbao, Spain ;Rodríguez-Tovar, F. J.; Departamento de Estratigrafía y Paleontología, Universidad de Granada, E-18002 Granada, Spain ;Tori, F.; Dipartimento di Scienze della Terra, Università di Firenze, I-50121 Firenze, Italy ;Tosquella, J.; Departamento de Geodinámica y Paleontología, Universidad de Huelva, E-21071 Huelva, Spain ;Uchman, A.; Institute of Geological Sciences, Jagiellonian University, Kraków, Pl-30063, Poland; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; 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 2011.228 32