Open AccessQuantitative analysis of calcareous nannofossil assemblages across the Campanian/Maastrichtian boundary interval at Kladorub (NW Bulgaria): preliminary results
Author(s) -
Georgi Granchovski
Publication year - 2021
Publication title -
spisanie na bʺlgarskoto geologičesko družestvo/spisanie na bʺlgarskoto geologičesko družestvo
Language(s) - English
Resource type - Journals
eISSN - 1314-8680
pISSN - 0007-3938
DOI - 10.52215/rev.bgs.2021.82.3.109
Subject(s) - calcareous , geology , paleontology , boundary (topology) , section (typography) , biostratigraphy , mathematics , mathematical analysis , advertising , business
An investigation of the variations in calcareous nannofossil abundances across the Campanian/Maastrichtian boundary interval at Kladorub (NW Bulgaria) has been carried out. The section has an established detailed biostratigraphic framework, based on calcareous nannofossils, and also contains the Campanian–Maastrichtian Boundary Event. The analysis shows that the nannofloras are dominated by Prediscosphaera cretacea, followed by Watznaueria barnesiae, Micula staurophora, Arkhangelskiella spp. and Cribrosphaerella ehrenbergii.