(Table 1) Globigerinoides sacculifer oxygen and carbon isotopes at DSDP Site 68-502

DOI

The oxygen and carbon isotopic record of G. sacculifer in DSDP Holes 502 and 502B shows that the Quaternary interval is almost complete. A slight hiatus exists in the upper Matuyama chron. The d18O data show two modes of isotopic variation: depleted values and low variability in the early Quaternary (910-1660 k.y.) and enriched composition and high variability in the late Quaternary (0-730 k.y.). These data document the change in mean composition between the early and late Quaternary, which occurs about 900 k.y. ago. These two modes of d18O variation reflect the changing ice budget on the continents and imply different envelopes of sea level variation during the early and late Quaternary. The occurrence of these two modes implies that boundary conditions during the early Quaternary were significantly different from those of the late Quaternary.

All measurements are on Globigerinoides sacculifer (300-355 µm). On the basis of blind duplicates, analytical precision is ±0.10 per mil (average 1/2 delta) for d18O and ±0.05 per mil for d13C. Sediment depth is given in mbsf and is corrected.

Supplement to: Prell, Warren L (1982): Oxygen and carbon isotope stratigraphy for the Quaternary of Hole 502B: Evidence for two modes of isotopic variability. In: Prell, WL; Gardner, JV; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 68, 455-464

Identifier
DOI https://doi.org/10.1594/PANGAEA.817105
Related Identifier https://doi.org/10.2973/dsdp.proc.68.120.1982
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.817105
Provenance
Creator Prell, Warren L
Publisher PANGAEA
Publication Year 1982
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 1455 data points
Discipline Earth System Research
Spatial Coverage (-79.380W, 11.490S, -79.378E, 11.492N); Caribbean Sea/RIDGE