Range chart of calcareous nannofossils in sediment core CRP-2A (Table 1)

Rare calcareous nannofossils from the Cape Roberts Project drillhole CRP-2A indicate that this area was episodically invaded by marginal oceanic surface waters during the late and late early Oligocene. These depauperate assemblages lack most of the biostratigraphic index fossils for the Oligocene, but do provide two datum that aid in constraining the age of the section: the last appearance datum (LAD) of Dictyococcites bisectus (23.9 Ma) at 149.28 mbsf and the LAD of Chiasmolithus altus (26.1 Ma) at 412.25 mbsf. Calcareous nannofossil assemblages stratigraphically below c. 440 mbsf contain conspicuous evidence of reworking of older (late Eocene) specimens that renders age determination difficult.

The abundance of individual species is expressed by the following letters:R = rare (11 sp. per traverse)

Supplement to: Watkins, David K; Villa, Giuliana (2000): Palaeogene calcareous nannofossils from CRP-2/2A, Victoria Land Basin, Antarctica. Terra Antartica, 7(4), 443-452

DOI https://doi.org/10.1594/PANGAEA.144690
PID https://hdl.handle.net/10013/epic.28262.d001
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.144690
Creator Watkins, David K ORCID logo; Villa, Giuliana
Publisher PANGAEA
Publication Year 2000
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 625 data points
Discipline Earth System Research
Spatial Coverage (163.719 LON, -77.006 LAT); off Cape Roberts, Ross Sea, Antarctica
Temporal Coverage Begin 1998-10-16T07:30:00Z
Temporal Coverage End 1998-11-25T14:20:00Z