(Fig. 1) Stable carbon and oxygen isotope ratios of foraminifera of ODP Hole 113-690B

• Main Authors: Kennett, James P, Stott, Lowell D
• Format: Dataset
• Language: English
• Published: PANGAEA 1991
• Subjects: 113-690B; Acarinina praepentacamerata; δ13C; δ18O; DEPTH; sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Joides Resolution; Leg113; Nuttallides truempyi; Ocean Drilling Program; ODP; Sample code/label; South Atlantic Ocean; Subbotina patagonica; Antarctic; Antarc*
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.770081; https://doi.org/10.1594/PANGAEA.770081

A remarkable oxygen and carbon isotope excursion occurred in Antarctic waters near the end of the Palaeocene (~57.33 Myr ago), indicating rapid global warming and oceanographic changes that caused one of the largest deep-sea benthic extinctions of the past 90 million years. In contrast, the oceanic plankton were largely unaffected, implying a decoupling of the deep and shallow ecosystems. The data suggest that for a few thousand years, ocean circulation underwent fundamental changes producing a transient state that, although brief, had long-term effects on environmental and biotic evolution.