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

Other Locations around the World:

 

Notes on Derivation of Age:

 

References:

Molina, E., Alegret, L., Apellaniz, E., et al., 2011. The Global Stratotype Section and Point (GSSP) for the base of the Lutetian Stage at the Gorrondatxe section, Spain. Episodes, 34(2): 86-108..

 


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