(Appendix) Distribution of planktonic foraminifers at DSDP Hole 72-516F, Coniacian-Santonian to upper Maestrichtian

DOI

During Leg 72 in the western South Atlantic, Cretaceous sediments were recovered only at Hole 516F (Rio Grande Rise). Late Cretaceous planktonic foraminifers were found in Cores 516F-89 through 516F-122 (between 964 and 1235 m sub-bottom); they are assigned to the late Coniacian to the latest Maestrichtian. Frequency and preservation of planktonic foraminifers are moderate in the upper Maestrichtian and deteriorate from there to the base. Only the upper Maestrichtian Abathomphalus mayaroensis Zone can be clearly delimited according to the generally accepted planktonic foraminiferal zonation; moreover, some of the more important zonal and stage boundary markers were not found. The Cretaceous/Tertiary boundary is well documented without any major hiatus, and in spite of the poorly recognized zonal boundaries, the Upper Cretaceous sequence is apparently continuous. There are possible correlations between planktonic foraminiferal distribution in Hole 516F and those in Site 356 (Sao Paulo Plateau) and Sites 357 and 21 (Rio Grande Rise).

Sediment depth is given in mbsf. Abundances: F=few, R=rare, -=not present, and numbers indicate number of specimens. cf.=confer.

Supplement to: Weiss, Wolfgang (1983): Upper Cretaceous planktonic foraminiferal biostratigraphy from the Rio Grande Rise: Site 516 of Leg 72, Deep Sea Drilling Project. In: Barker, PF; Carlson, RL; Johnson, DA; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 72, 715-721

Identifier
DOI https://doi.org/10.1594/PANGAEA.811557
Related Identifier https://doi.org/10.2973/dsdp.proc.72.131.1983
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.811557
Provenance
Creator Weiss, Wolfgang
Publisher PANGAEA
Publication Year 1983
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Language English
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 10282 data points
Discipline Earth System Research
Spatial Coverage (-35.285 LON, -30.276 LAT); South Atlantic/CONT RISE