Climate and Sea Level During Oxygen Isotope Stage 7b: On-Land Evidence from New Zealand
- 1 March 1988
- journal article
- research article
- Published by Cambridge University Press (CUP) in Quaternary Research
- Vol. 29 (2), 176-185
- https://doi.org/10.1016/0033-5894(88)90059-2
Abstract
Strata at Landguard Bluff, near Wanganui, New Zealand preserve a clear record of relative sea-level changes during oxygen-isotope stage 7. Two relative high sea-level stands (during stages 7a about 210,000 yr ago and 7c about 240,000 yr ago) are separated by a relative low sea level (stage 7b) that was at least 32 m lower than present. Pollen analysis of sediment deposited during stage 7b indicates climate at the time was up to 3°C cooler than present. The climate and sea-level evidence from Landguard Bluff are consistent with oxygen-isotopic evidence from deep-sea cores indicating a marked cooling during stage 7, which is closely associated with a summer radiation minimum centered at about 230,000 yr ago in the Northern Hemisphere.This publication has 18 references indexed in Scilit:
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