Oxygen and carbon isotopic ratios were measured on left-coiling Neogloboquadrina pachyderma separated from sediments recovered from Holes 1096B (3152 m water depth) and 1101A (3280 m water depth) during Ocean Drilling Program Leg 178. The sediment samples were widely spaced, extending over the past 2.1 m.y. The nature of the sediments from which they were separated and the measured oxygen isotopic ratios show that N. pachyderma (s) is preserved in both glacial and interglacial sediments over the entire period, pointing to the possibility of extracting a detailed isotopic record at these sites extending back to 2.1 Ma.
1Barker, P.F., Osterman, L.E., and Hall, M.A., 2001. Data report: Oxygen and carbon isotope measurements on Neogloboquadrina pachyderma (s) from Holes 1096B and 1101A, Antarctic Peninsula margin, Leg 178. In Barker, P.F., Camerlenghi, A., Acton, G.D., and Ramsay, A.T.S. (Eds.), Proc. ODP, Sci. Results, 178 [Online]. Available from World Wide Web: <http://www-odp.tamu.edu/publications/178_SR/chap_20/chap_20.htm>. [Cited YYYY-MM-DD]
2British Antarctic Survey, Madingley Road, Cambridge CB3 0ET, United Kingdom. p.barker@bas.ac.uk
3U.S. Geological Survey, MS 926A, Reston VA 20192, USA.
4The Godwin Laboratory, Cambridge University, New Museums Site, Cambridge CB2 3SA, United Kingdom.
Initial
receipt: 1 September 2000
Acceptance: 26 June 2001
Web publication: 13 November 2001
Ms 178SR-220