Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-25T06:24:08.070Z Has data issue: false hasContentIssue false

Accelerator Mass Spectrometric Radiocarbon Measurements on Foraminifera Shells from Deep-Sea Cores

Published online by Cambridge University Press:  18 July 2016

Wallace S Broecker
Affiliation:
Lamont-Doherty Geological Observatory, Palisades, New York 10964
Mieczyslawa Klas
Affiliation:
Lamont-Doherty Geological Observatory, Palisades, New York 10964
Elizabeth Clark
Affiliation:
Lamont-Doherty Geological Observatory, Palisades, New York 10964
Susan Trumbore
Affiliation:
ETH Honggerberg, CH-8093 Zurich, Switzerland
Georges Bonani
Affiliation:
ETH Honggerberg, CH-8093 Zurich, Switzerland
Willy Wölfli
Affiliation:
ETH Honggerberg, CH-8093 Zurich, Switzerland
Susan Ivy
Affiliation:
ETH Honggerberg, CH-8093 Zurich, Switzerland
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Radiocarbon ages determined by the AMS method on hand-picked foraminifera shells are reported. The results allow estimates of the ventilation rate of the deep Atlantic and Pacific Oceans during glacial time. They also extend our knowledge of the chronology of events associated with the transition from full glacial conditions ca 15,000 years ago to full interglacial conditions ca 8000 years ago. This and the previous lists (Broecker et al 1988c) contain all the results obtained as part of this program through the fall of 1989.

Type
Articles
Copyright
Copyright © The American Journal of Science 

References

Broecker, WS, Andrée, M, Bonani, G, Mix, A, Klas, M, Wölfli, W and Oeschger, H 1988a Comparison between the radiocarbon ages of coexisting planktonic foraminifera. Paleoceanography 3: 647658.Google Scholar
Broecker, WS, Andrée, M, Bonani, G, Wölfli, W, Oeschger, H, Klas, M, Mix, A and Curry, W 1988b Preliminary estimates for the radiocarbon age of deep water in the glacial ocean. Paleoceanography 3: 659669.Google Scholar
Broecker, WS, Kennett, JP, Flower, BP, Teller, J, Trumbore, S, Bonani, G and Wölfli, W 1989a The routing of Laurentide ice-sheet meltwater during the Younger Dryas cold event. Nature 341: 318321.CrossRefGoogle Scholar
Broecker, WS, Klas, M, Beavan, N, Mathieu, G, Mix, A, Andrée, M, Oeschger, H, Wölfli, W, Suter, M, Bonani, G, Hofmann, HJ, Nessi, M and Morenzoni, E 1988c Accelerator mass spectrometry radiocarbon measurements on marine carbonate samples from deep sea cores and sediment traps. Radiocarbon 30(3): 261295.Google Scholar
Broecker, WS, Peng, TH, Trumbore, S, Bonani, G and Wölfli, W, in press, The distribution of radiocarbon in the glacial ocean. Biogeochemical Cycles. Google Scholar
Broecker, WS, Trumbore, S, Bonani, G, Wölfli, W and Klas, M 1989b, Anomalous AMS radiocarbon ages for foraminifera from high-deposition-rate ocean sediments. Radiocarbon 31(2): 157163.Google Scholar
Curry, WB, Duplessy, JC, Labeyrie, LD and Shackleton, N 1988 Changes in the distribution of δ13C of deep water ΣCO2 between the last glaciation and the Holocene. Paleoceanography 3: 317341.Google Scholar
Deuser, WG and Degens, ET 1969 O18/O16and C13/C12 ratios of fossils from the hot-brine deep area of the central Red Sea. In Degens, ET and Ross, DA, eds, Hot brines and recent heavy metal deposits in the Red Sea. Berlin, Springer-Verlag: 336347.Google Scholar
Ku, TL, Thurber, DL and Mathieu, G 1969 Radiocarbon chronology of Red Sea sediments. In Degens, ET and Ross, DA, eds, Hot brines and recent heavy metal deposits in the Red Sea. Berlin, Springer-Verlag: 348359.Google Scholar
Neftel, A, Oeschger, H, Staffelbach, T and Stauffer, B 1988 CO2 record in the Byrd ice core 50,000-5,000 years bp. Nature 331: 609611.CrossRefGoogle Scholar
Oppo, DW and Fairbanks, RG 1987 Variability in the deep and intermediate water circulation of the Atlantic Ocean during the past 25,000 years: Northern Hemisphere modulation of the Southern Ocean. Earth & Planetary Letters 86: 115.Google Scholar
Suter, M, Balzer, R, Bonani, G, Hofmann, HJ, Morenzoni, E, Nessi, M, Wölfli, W, Andrée, M, Beer, J and Oeschger, H 1984 Precision measurements of 14C in AMS - some results and prospects. Nuclear Instruments & Methods B5: 117122.Google Scholar