Range chart of calcareous nannofossils from ODP Hole 188-1165B (Table 1) ...

• Main Authors: Villa, Giuliana, Lupi, Claudia, Cobianchi, Miriam, Florindo, Fabio, Pekar, Stephen F
• Format: Dataset
• Language: English
• Published: PANGAEA 2008
• Subjects: DEPTH, sediment/rock; Sample code/label; Nannofossil abundance; Nannofossils preservation; Species richness; Calcidiscus leptoporus; Ceratolithus telesmus; Coccolithus pelagicus; Coccolithus pelagicus ssp. braarudii; Crenalithus japonicus; Crenalithus doronicoides; Emiliania huxleyi; Gephyrocapsa caribbeanica; Gephyrocapsa oceanica; Gephyrocapsa omega; Gephyrocapsa spp.; Gephyrocapsa aperta; Gephyrocapsa ericsonii; Gephyrocapsa muellerae; Helicosphaera carteri; Helicosphaera burkei; Pseudoemiliania pacifica; Pseudoemiliania lacunosa ovata; Pseudoemiliania lacunosa; Pseudoemiliania lacunosa lacunosa; Reticulofenestra asanoi; Reticulofenestra celtica; Reticulofenestra minuta; Umbilicosphaera spp.; Umbilicosphaera hulburtiana; Thoracosphaera spp.; Drilling/drill rig; DSDP/ODP/IODP sample designation; Smear slide analysis; Leg188; Joides Resolution; Ocean Drilling Program ODP; Cape Roberts; East Antarctica; Prydz Bay; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.1594/pangaea.706554; https://doi.pangaea.de/10.1594/PANGAEA.706554

Bio- and magnetostratigraphic age data and nannofossil assemblage analysis from ODP Site 1165 evidence an anomalous warming event of the surface waters in and around Prydz Bay during the Early Pleistocene, approximately 1 Ma. This results from an increase in the abundance of nannofossils at Site 1165, that occurred at 1 Ma. Detailed high-resolution sampling permits a new bio-magnetostratigraphic interpretation for ODP Site 1165. A decrease in delta18O values at Sites 1165 and 1167 also occurs at this time, supporting the presence of warming conditions in the Prydz Bay area. A return to colder surface waters, indicated by the absence or rare occurrence of nannofossils in the upper cores from Site 1165, suggests that more stable glacial conditions existed in the Prydz Bay basin, for the last 900 ka. The biogenic carbonate sequence identified at Site 1167 is similar to the carbonate shales recovered from the Cape Roberts Project 1. Both have been dated at about 1 Ma, supporting the idea that a significant ... : Supplement to: Villa, Giuliana; Lupi, Claudia; Cobianchi, Miriam; Florindo, Fabio; Pekar, Stephen F (2008): A Pleistocene warming event at 1 Ma in Prydz Bay, East Antarctica: Evidence from ODP Site 1165. Palaeogeography, Palaeoclimatology, Palaeoecology, 260(1-2), 230-244 ...