(Table 1) Oxygen and carbon isotopic values of benthic foraminifera from the Upper Maastrichtian interval of various DSDP and ODP sites

DOI

Stable isotopic data from benthic foraminifera indicate the occurrence of at least three deepwater masses in the late Maastrichtian ocean. Given mean oceanic d18Ow of -1.0 per mil, the temperature of the coolest intermediate-depth waters was 5°-7°C, that of the deepest waters was 10°C, and that of the warmest intermediate waters was 13°-15°C. The cool intermediate-depth water mass probably originated in the high-latitude Southern Ocean. The deepest waters originated at least partly in the northern Atlantic. The source region for the warmest intermediate-depth water mass is unknown. Although much of the late Maastrichtian deep water was probably preconditioned for winter sinking by low- or middle-latitude evaporation, no more than ~11% of late Maastrichtian deep water could have been directly actuated by low-latitude sea surface evaporation. At least in the southern Atlantic and Indian Oceans, heat transport by upwelling of deep water was not the primary cause of mild sea surface and coastal temperatures.

Supplement to: d'Hondt, Steven L; Arthur, Michael A (2002): Deep water in the late Maastrichtian ocean. Paleoceanography, 17(1), 8-1-8-11

Identifier
DOI https://doi.org/10.1594/PANGAEA.846323
Related Identifier https://doi.org/10.1029/1999PA000486
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.846323
Provenance
Creator d'Hondt, Steven L ORCID logo; Arthur, Michael A
Publisher PANGAEA
Publication Year 2002
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 315 data points
Discipline Earth System Research
Spatial Coverage (-76.112W, -65.160S, 178.919E, 40.361N); South Atlantic/VALLEY; North Pacific/CONT RISE; South Atlantic/CONT RISE; South Atlantic/RIDGE; North Atlantic/RIDGE; North Atlantic; South Atlantic/CREST; South Atlantic; North Pacific; South Atlantic Ocean; South Indian Ridge, South Indian Ocean
Temporal Coverage Begin 1969-01-09T00:00:00Z
Temporal Coverage End 1988-10-26T00:00:00Z