Foraminiferal paleoceanography

Collaborators: George Scott (GNS, Lower Hutt); Martin Crundwell (GNS, Lower Hutt); Helen Neil and Helen Bostock (NIWA, Wellington); Jim Kennett (California); Lionel Carter (Victoria University, Wellington); Silke Steph, Ralf Tiederman (Germany)

This programme evolved out of Bruce Hayward's participation on Ocean Drilling Programme Leg 181, which drilled six sites off south-eastern New Zealand in 1998. It has focussed on the use of benthic and planktic foraminifera to reconstruct the Pliocene and Pleistocene paleoceanography on either side of the Subtropical Front, east of New Zealand. In 2008-2010 we produced an SST record for the last 1 myrs from off the West Coast of the South Island of New Zealand for comparison with the East Coast record. These studies have included five MSc theses on the planktic foraminifera and their consequent sea surface temperature record (MAT estimates) for the mid Pliocene and mid to late Pleistocene in ODP 1125 and the mid-late Pleistocene of ODP 1119 and MD06-2986 (West Coast). The east-west synthesis is in preparation.

Future work will focus on the history of the STF south of New Zealand (with Helen Bostock), the history of carbonate dissolution around New Zealand (with Helen Bostock) and the history of the STF, SAF, and Humboldt Current in the South Pacific Ocean (with Ralf Tiederman and Silke Steph).

Publications

• Hayward, B.W., Sabaa, A.T., Kolodziej, A., Crundwell, M., Steph, S., Scott, G.H., Neil, H., Bostock, H., Carter, L., Grenfell, H.R. (in preparation). Planktic foraminiferal assemblage and sea-surface temperature record of the history of the Subtropical Front in the South-west Pacific over the last one million years.
• Hayward, B. W.; Scott, G. H.; Crundwell, M. P.; Kennett, J. P.; Carter, L.; Neil, H.; Sabaa, A. T.; Wilson, K.; Rodger, J. S.; Schaefer, G.; Grenfell, H. R.; Li, Q. 2008: The effect of submerged plateaux on Pleistocene gyral circulation and sea-surface temperatures in the Southwest Pacific. Planetary and Global Change, 63: 309-316.
• Scott, G.H.; Kennett, J.P.; Wilson, K.; Hayward, B.W., 2007. Globorotalia puncticulata: population divergence, dispersal and extinction related to Pliocene-Quaternary water masses. Marine Micropaleontology,62: 235-253.
• Wilson, K.; Hayward, B.W.; Sabaa, A.T.; Scott, G.H.; Kennett, J.P., 2005. A one-million year history of a north-south segment of the Subtropical Front, east of New Zealand. Palaeoceanography 20: PA2004, doi:10.1029/2004PA001080.
• Schaefer, G., Rodger, J.S., Hayward, B.W.; Kennett, J.P.; Sabaa, A.T.; Scott, G.H., 2005. Planktic foraminiferal and sea surface temperature record during the last 1 myr across the Subtropical Front, Southwest Pacific. Marine Micropaleontology, 54: 191-212.
• Hayward, B.W.; Grenfell, H.R.; Sabaa, A.T.; Sikes, E.L., 2005. Deep-sea benthic foraminiferal record of the mid-Pleistocene transition in the South-west Pacific. In: M.J. Head and P.L. Gibbard (eds). Early-Middle Pleistocene transitions: the land-ocean evidence. Geological Society (London), Special Publication 247, Pp.85-115.
• Hayward, B.W.; Grenfell, H.R.; Sabaa, A.T., 2004. Benthic foraminiferal record of the late Quaternary (last 150 ka) paleoceanographic and sedimentary history of the Bounty Trough, east of New Zealand. Paleogeography, Paleoecology, Paleoclimatology 211: 59-93.
• McCave, I.N.; Carter, L.; Carter, R.M.; Hayward, B.W., 2004. Cenozoic oceanographic evolution of the SW Pacific gateway: introduction. Marine Geology 205: 1-7.
• Sabaa, A.T.; Sikes, E.L.; Hayward, B.W. and Howard, W.R., 2004. Pliocene sea surface temperature changes in ODP Site 1125, Chatham Rise, east of New Zealand. Marine Geology 205: 113-125.
• Hayward, B.W.; Grenfell, H.R.; Carter, R.; Hayward, J.J., 2004. Benthic foraminiferal proxy evidence for the Neogene paleoceanographic history of the South-west Pacific, east of New Zealand. Marine Geology 205: 147-84.
• Carter, R.M.; McCave, I.N.; Richter, C.; Carter, L.; Aita, Y.; Buret, C.; Stefano, A.; Fenner, J.; Fothergill, P.; Gradstein, F.; Hall, I.; Handwerger, D.; Harris, S.; Hayward, B.; Hu, S.; Joseph, L.; Khim, B. K.; Lee, Y.-D.; Millwood, L.; Rinna, J.; Smith, G.; Suzuki, A.; Weedon, G.; Wei, K.-Y.; Wilson, G.; Winkler, A., 1999. Proceedings of the Ocean Drilling Program, Initial Reports 181. College Station, Texas, USA. 80 p.