Age determination of North Atlantic sediment cores
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PANGAEA
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| Auteurs principaux: | , , , , , |
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
1989
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| _version_ | 1867168553240625152 |
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| author | Bard, Edouard Fairbanks, Richard G Maurice, Pierre Duprat, Josette M Moyes, Jean Duplessy, Jean-Claude |
| author_facet | Bard, Edouard Fairbanks, Richard G Maurice, Pierre Duprat, Josette M Moyes, Jean Duplessy, Jean-Claude |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Coupled measurements of delta18O and accelerator mass spectrometry (AMS) 14C in a particular species of planktonic foraminifera may be used to calculate sea-level estimates for the last deglaciation. Of critical importance for this type of study is a knowledge of the seasonality of foraminiferal growth, which can be provided by delta18O measurements of modern shells (core tops, plankton tows). Isotopic (delta18O, AMS-14C dating) and faunal records (transfer function sea surface temperature) were obtained from two cores in the North Atlantic at about 37°N. The locations were chosen to obtain high sedimentation rate records removed from the major ice-melt discharge areas of the last deglaciation. Based upon Globigerina bulloides data, four delta18O-based sea-level estimates were calculated: -67 +/- 7 m at 12,200 yr B.P. and -24 +/- 8 m at about 8200 yr B.P. for core SU81-18; -83 +/- 10 m at 12,200 yr B.P. and -13 +/- 11 m at about 8500 yr B.P. for core SU81-14. Using a second working hypothesis concerning the seasonability of G. bulloides growth, it is suggested that the sea-level rose by about 40 m during the millennium which followed 14,500 yr B.P. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_726266 |
| institution | PANGAEA |
| language | en |
| publishDate | 1989 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Age determination of North Atlantic sediment cores Bard, Edouard Fairbanks, Richard G Maurice, Pierre Duprat, Josette M Moyes, Jean Duplessy, Jean-Claude Atlantic Ocean; CEPAG; Glacial Atlantic Ocean Mapping; GLAMAP; GLAMAP2000; Le Suroît; PC; Piston corer; SU81-14; SU81-18 Coupled measurements of delta18O and accelerator mass spectrometry (AMS) 14C in a particular species of planktonic foraminifera may be used to calculate sea-level estimates for the last deglaciation. Of critical importance for this type of study is a knowledge of the seasonality of foraminiferal growth, which can be provided by delta18O measurements of modern shells (core tops, plankton tows). Isotopic (delta18O, AMS-14C dating) and faunal records (transfer function sea surface temperature) were obtained from two cores in the North Atlantic at about 37°N. The locations were chosen to obtain high sedimentation rate records removed from the major ice-melt discharge areas of the last deglaciation. Based upon Globigerina bulloides data, four delta18O-based sea-level estimates were calculated: -67 +/- 7 m at 12,200 yr B.P. and -24 +/- 8 m at about 8200 yr B.P. for core SU81-18; -83 +/- 10 m at 12,200 yr B.P. and -13 +/- 11 m at about 8500 yr B.P. for core SU81-14. Using a second working hypothesis concerning the seasonability of G. bulloides growth, it is suggested that the sea-level rose by about 40 m during the millennium which followed 14,500 yr B.P. |
| title | Age determination of North Atlantic sediment cores |
| topic | Atlantic Ocean; CEPAG; Glacial Atlantic Ocean Mapping; GLAMAP; GLAMAP2000; Le Suroît; PC; Piston corer; SU81-14; SU81-18 |
| url | https://doi.org/10.1594/PANGAEA.726266 |