Planktic foraminiferal and sea surface temperature record during the last 1 Myr across the Subtropical Front, Southwest Pacific ...

• Main Authors: Schaefer, Grace, Rodger, J Stuart, Hayward, Bruce William, Kennett, James P, Sabaa, Ashwaq T, Scott, George H
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2005
• Subjects: Composite Core; Drilling/drill rig; Gravity corer; Leg90; Leg181; Glomar Challenger; Joides Resolution; Deep Sea Drilling Project DSDP; Ocean Drilling Program ODP; Neogloboquadrina pachyderma
• Online Access: https://dx.doi.org/10.1594/pangaea.691478; https://doi.pangaea.de/10.1594/PANGAEA.691478

Planktic foraminiferal faunas and modern analogue technique estimates of sea surface temperature (SST) for the last 1 million years (Myr) are compared between core sites to the north (ODP 1125, 178 faunas) and south (DSDP 594, 374 faunas) of the present location of the Subtropical Front (STF), east of New Zealand. Faunas beneath cool subtropical water (STW) north of the STF are dominated by dextral Neogloboquadrina pachyderma, Globorotalia inflata, and Globigerina bulloides, whereas faunas to the south are strongly dominated by sinistral N. pachyderma (80–95% in glacials), with increased G. bulloides (20–50%) and dextral N. pachyderma (15–50%) in interglacials (beneath Subantarctic Water, or SAW). Canonical correspondence analysis indicates that at both sites, SST and related factors were the most important environmental influences on faunal composition. Greater climate-related faunal fluctuations occur in the south. Significant faunal changes occur through time at both sites, particularly towards the end of ... : Further relevante data sets: Wells and Okada (1997, doi:10.1594/PANGAEA.681280), Weaver et al. (1998, doi:10.1594/PANGAEA.691461) ...