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Diagenesis-related differences in isotopic and elemental composition of late Campanian and early Maastrichtian inoceramids and belemnites from NE Belgium: Palaeoenvironmental implications
Elorza, J.; GarciaGarmilla, F.; Jagt, J.W.M. (1996). Diagenesis-related differences in isotopic and elemental composition of late Campanian and early Maastrichtian inoceramids and belemnites from NE Belgium: Palaeoenvironmental implications. Geol. Mijnbouw 75(4): 349-360
In: Geologie en Mijnbouw. Koninklijk Nederlands Geologisch Mijnbouwkundig Genootschap: The Netherlands. ISSN 0016-7746, more

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Keywords
Author keywords
    cathodoluminescence; geochemistry; late Cretaceous; molluscs;palaeotemperatures; stable isotopes

Authors  Top 
  • Elorza, J.
  • GarciaGarmilla, F.
  • Jagt, J.W.M.

Abstract
    Late Campanian and early Maastrichtian inoceramid bivalves and belemnite rostra from three sections in the Liege and Limburg provinces (Belgium) are analysed petrologically and geochemically. Oxygen isotope ratios indicate that the early Maastrichtian material has been more affected by diagenesis than the late Campanian specimens, but data for belemnites do support the cooling trend from the late Campanian to the early Maastrichtian. Late Campanian and early Maastrichtian mean palaeotemperatures are deduced to have been lower than 12.5 and 11.3 degrees C, respectively. Enrichment and depletion of elements, including rare-earth elements, and the generalised bright red-yellowish cathodoluminescence colour indicate cation-sensitive mobilisation processes during diagenesis.

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