GSSP for Lutetian Stage
Definition:
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, 3º00'51.61" 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 maximum flooding 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.
Location:
167.85 metres in the Gorrondatxe sea-cliff section (NW of Bilbao city, Basque Country, northern Spain. The latitude and longitude of the section are 43º22'46.47" N, 3º00'51.61" W respectively.
Sedimentology:
dark marl
Primary Markers:
LO of calcareous nannofossil Blackites inflatus (CP12a/b boundary); middle of polarity Chron C21r
Secondary Markers:
Radiometric Dating:
Stable Carbon Isotopes:
Correlation Events:
nannofossil Blackites inflatus