Petrizzo, Maria Rose et al. (2011): Identification of the base of the lower-to-middle Campanian Globotruncana ventricosa Zone; comments on reliability and global correlations

ODP 122
ODP 198
DSDP 15 146
ODP 198 1210
ODP 122 762


Petrizzo, Maria Rose
Universita di Milano, Dipartimento di Scienze della Terra, Milan, Italy

Falzoni, Francesca

Premoli Silva, Isabella

Identification of the base of the lower-to-middle Campanian Globotruncana ventricosa Zone; comments on reliability and global correlations
Cretaceous Research
Elsevier, United Kingdom
The reliability of the first appearance datum of Globotruncana ventricosa as biozonal marker for the Campanian is discussed. The taxonomy and species concept of G. ventricosa and of Globotruncana tricarinata, that has been either regarded as junior synonym of Globotruncana linneiana or of G. ventricosa, are examined to avoid misidentifications, and one species is here formally described as new, Globotruncana neotricarinata nov. sp. The tropical and subtropical planktic foraminiferal assemblages from the Bottaccione section (Gubbio, Italy), from Deep Sea Drilling Project (DSDP) Site 146 (Caribbean Sea, central Atlantic Ocean), and from Ocean Drilling Program (ODP) Hole 1210B (Shatsky Rise, northwestern Pacific Ocean) are analyzed for the presence of biostratigraphic markers. Lowest and highest occurrence data have been checked in thin sections and washed residues in the Bottaccione section. The comparative biostratigraphic analysis of the planktic foraminiferal distribution highlights: 1) the absence of G. ventricosa at the stratigraphic level at which it is supposed to first occur in the Tethyan area, 2) the presence of transitional specimens resembling G. ventricosa and thus erroneously used to identify the base of the G. ventricosa Zone, 3) the presence of a good sequence of bioevents that appear to be promising for regional and global correlations such as the appearance of Globotruncanita atlantica, Contusotruncana plummerae and the disappearance of Hendersonites carinatus. The correlation potential of these bioevents has been verified across latitudes by studying the Campanian planktic foraminiferal assemblage in pelagic sediments drilled on coastal Tanzania (western Indian Ocean), and at the deep-sea ODP Hole 762C (Exmouth Plateau, western Indian Ocean), that were located at 30 degrees S and 47 degrees S in the Late Cretaceous, respectively. Besides the known diachronous first appearance of G. ventricosa in the Southern Ocean sites, results confirm the difficulty in using G. ventricosa as zonal marker in the tropical and subtropical areas, and the validity of the first appearance datum of C. plummerae for regional and global correlations. Abstract Copyright (2011) Elsevier, B.V.
Coverage:Geographic coordinates:
West:-69.2240East: 158.1600

Stratigraphy; Africa; Atlantic Ocean; biogeography; biostratigraphy; biozones; Bottaccione; Campanian; Caribbean Sea; correlation; Cretaceous; Deep Sea Drilling Project; DSDP Site 146; East Africa; Europe; Exmouth Plateau; Foraminifera; global; Globigerinacea; Globotruncana; Globotruncana neotricarinata; Globotruncanidae; Gubbio Italy; Indian Ocean; Invertebrata; Italy; Leg 122; Leg 15; Leg 198; lower Campanian; Mesozoic; microfossils; middle Campanian; new taxa; North Atlantic; North Pacific; Northwest Pacific; Ocean Drilling Program; ODP Site 1210; ODP Site 762; Pacific Ocean; paleo-oceanography; paleogeography; Perugia Italy; planktonic taxa; Protista; regional; Rotaliina; Senonian; Shatsky Rise; Southern Europe; Southern Ocean; Tanzania; taxonomy; Tethys; Umbria Italy; Upper Cretaceous; Venezuelan Basin; West Pacific;