FIXING A BASAL BERRIASIAN AND JURASSIC-CRETACEOUS (J-K) BOUNDARY - IS THERE PERHAPS SOME LIGHT AT THE END OF THE TUNNEL?

Authors

  • WILLIAM A.P. WIMBLEDON
  • CRISTINA E. CASELLATO
  • DANIELA REHÁKOVÁ
  • LUC G. BULOT
  • ELISABETTA ERBA
  • SILVIA GARDIN
  • ROEL M.C.H. VERREUSSEL
  • DIRK K. MUNSTERMAN
  • CHRIS O. HUNT

DOI:

https://doi.org/10.13130/2039-4942/5976

Keywords:

Berriasian, J/K Boundary, GSSP, Correlation, Tethyan, Boreal, Austral, Non-Marine, Ammonites, Calpionellids, Calcareous nannofossils, Palynomorphs, Magnetostratigraphy

Abstract

Our tentative proposal is that several biological markers have potential to help define any putative boundary in the traditional basal Berriasian interval. That is, between the base of the Berriasella jacobi Subzone and the base of the Pseudosubplanites grandis Subzone, and therefore straddling the base of magnetozone M18r.  Promising micropalaeontological markers are the FADs of Nannoconus steinmannii minor and N. kamptneri minor, plus the base of the Calpionella alpina Zone, and the bloom(s) of Calpionella alpina and Crassicollaria parvula.  The testing and calibration of this constraining event-matrix in the most complete and fossiliferous sections is our task for the near future.

 

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Published

2011-07-31

Issue

Vol. 117 No. 2 (2011)

Section

Articles

License

The journal allow the author(s) to hold the copyright without restrictions.