Glacial to interglacial fluctuations in productivity in the equatorial Pacific as indicated by marine barite
- Univ. of California, San Diego, CA (United States)
- MBARI, Moss Landing, CA (United States)
An empirical correlation between marine barite (BaSO{sub 4}) accumulation rate in core-top sediment samples from two equatorial Pacific transects (at 140{degrees}W and 110{degrees}W) and the estimated primary productivity of the overlying water column were used to evaluate glacial to interglacial changes in productivity. Fluctuations in barite accumulation rates down-core indicate that during glacial periods of the past 450,000 years, the productivity in the central and eastern equatorial Pacific was about two times that during intervening interglacial periods. This result is consistent with other evidence that productivity was high in the eastern and central equatorial Pacific during the last glacial. 48 refs., 3 figs.
- OSTI ID:
- 458874
- Journal Information:
- Science, Journal Name: Science Journal Issue: 5291 Vol. 274; ISSN SCIEAS; ISSN 0036-8075
- Country of Publication:
- United States
- Language:
- English
Similar Records
Terrigenous Fe input and biogenic sedimentation in the glacial and interglacial equatorial Pacific Ocean
Global changes in deep-sea benthic foraminiferal distribution over the last to complete glacial cycles
Variability in the eastern equatorial Pacific Ocean during 1986-1988
Journal Article
·
Thu Nov 30 23:00:00 EST 1995
· Global Biogeochemical Cycles
·
OSTI ID:244079
Global changes in deep-sea benthic foraminiferal distribution over the last to complete glacial cycles
Conference
·
Tue Dec 31 23:00:00 EST 1991
· Geological Society of America, Abstracts with Programs; (United States)
·
OSTI ID:5725058
Variability in the eastern equatorial Pacific Ocean during 1986-1988
Journal Article
·
Wed Aug 15 00:00:00 EDT 1990
· Journal of Geophysical Research; (USA)
·
OSTI ID:5932602