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Bottom Water and Benthonic Foraminifera in the North Atlantic—Glacial-Interglacial Contrasts1

Published online by Cambridge University Press:  20 January 2017

S.Stephen Streeter
S.Stephen Streeter*
Affiliation:
Lamont-Doherty Geological Observatory, of Columbia University, Palisades, NY 10964 USA
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Abstract

Today, below 2500 m, benthonic foraminiferal faunas in the North Atlantic are dominated by a few species. Faunal composition changes slowly with increasing depth and decreasing temperature. Surface sediment and down-core counts of benthonic foraminifera reported by Phleger, Parker, and Peirson (1953) in the reports of the Swedish Deep-Sea Expedition have been supplemented by additional bottom sediment and piston core samples. Present-day benthonic foraminiferal assemblages from the deeper portions of the North Atlantic appear to be controlled more by the distribution of bottom water types than by bathymetry. In most piston cores, the assemblages vary greatly during the last 150,000 yr, suggesting depression and elevation of faunas at the core site through a depth range of several hundred meters. This would indicate that bottom water characteristics have shifted back and forth in this interval of time and, therefore, that bottom circulation partakes in the well-documented shifts recorded for surface waters of the North Atlantic. It appears that dense water, similar to present-day North Atlantic Deep Water, was produced over a wide area north of 45° N during cooler intervals and that it spread widely at depth.

Type
Original Articles
Information
Quaternary Research , Volume 3 , Issue 1 , June 1973 , pp. 131 - 141
Copyright
University of Washington

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References

Broecker, W.S., van Donk, J., (1970). Insolation changes, ice volumes, and the O18 record in deep-sea cores. Reviews of Geophysics and Space Physics 8, 1 169–198.CrossRefGoogle Scholar
Emiliani, C., (1955). Pleistocene temperatures. Journal of Geology 63, 6 538–578.CrossRefGoogle Scholar
Emiliani, C., (1958). Paleotemperature analysis of Core 280 and Pleistocene correlations. Journal of Geology 66, 3 264–275.CrossRefGoogle Scholar
Ericson, D.B., Ewing, M., Wollin, G., Heezen, B.C., (1961). Atlantic deep-sea sediment cores. Geological Society of America Bulletin 72, 2 193–285.CrossRefGoogle Scholar
Imbrie, J., Kipp, N.G., (1971). A new micropaleontological method for quantitative paleoclimatology: application to a Late Pleistocene Caribbean core. Turekian, K.K., The Late Cenozoic Glacial Ages Yale University Press 71–181.Google Scholar
Kellogg, T.B., (1972). Late Pleistocene climates in the Norwegian and Greenland Seas (Abstr.). Geological Society of America, Abstracts with Programs 4, 7 560.Google Scholar
Mesollela, K.J., Matthews, R.K., Broecker, W.S., Thurber, D.L., (1969). The astronomical theory of climatic change: Barbados data. Journal of Geology 77, 250–274.CrossRefGoogle Scholar
McIntyre, A., Bé, A., Biscaye, P., Burckle, L., Gardner, J., Geitzenauer, K., Goll, R., Kellogg, T., Prell, W., Roche, M., Imbrie, J., Kipp, N., Ruddiman, W., Moore, T., Heath, R., (1972). The glacial North Atlantic 17,000 years ago: paleoisotherm and oceanographic maps derived from floral-faunal parameters by CLIMAP (Abstr.). Geological Society of America, Abstracts with Programs 4, 7 590–591.Google Scholar
McIntyre, A., Ruddiman, W.F., Jantzen, R., (1972). Southward penetrations of the North Atlantic Polar Front: faunal and floral evidence of large-scale surface water mass movements over the last 225,000 years. Deep-Sea Research 19, 1 61–77.Google Scholar
Olausson, E., (1960). Description of sediment cores from the North Atlantic. Reports of the Swedish Deep-Sea Expedition 7, 229–286.Google Scholar
Olausson, E., (1965). Evidence of climatic changes in North Atlantic deep-sea cores, with remarks on isotopic paleotemperature analysis. Scars, M., Progress in Oceanography 3 Pergamon Press 221–252.CrossRefGoogle Scholar
Phleger, F.B., Parker, F.L., Peirson, J.F., (1953). North Atlantic foraminifera. Reports of the Swedish Deep-Sea Expedition 7, 1–122.Google Scholar
Ruddiman, W.F., McIntyre, A., (1973). Time-transgressive deglacial retreat of polar waters from the North Atlantic. Quaternary Research 3, 117–130.Google Scholar
Streeter, S.S., (1972). Living benthonic foraminifera of the Gulf of California, a factor analysis of Phleger's (1964) data. Micropaleontology 18, 1 64–73.Google Scholar
Weyl, P.K., (1968). The role of the oceans in climatic change: a theory of the Ice Ages. Meterological Monographs 8, 30 37–62.Google Scholar
Worthington, L.V., Wright, W.R., (1970). North Atlantic Ocean atlas of potential temperature and salinity in the deep water, including temperature, salinity and oxygen profiles from the Erika Dan cruise of 1962. Woods Hole Oceanographic Institution Atlas Series II 24, 58 pls.Google Scholar