An alternative astronomical calibration of the lower Pleistocene timescale based on ODP Site 677
ABSTRACT Ocean Drilling Program (ODP) Site 677 provided excellent material for high resolution stable isotope analysis of both benthonic and planktonic foraminifera through the entire Pleistocene and upper Pliocene. The oxygen isotope record is readily correlated with the SPECMAP stack (Imbrie et al...
Published in: | Transactions of the Royal Society of Edinburgh: Earth Sciences |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
1990
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0263593300020782 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0263593300020782 |
id |
crcambridgeupr:10.1017/s0263593300020782 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0263593300020782 2024-09-09T20:04:06+00:00 An alternative astronomical calibration of the lower Pleistocene timescale based on ODP Site 677 Shackleton, N. J. Berger, A. Peltier, W. R. 1990 http://dx.doi.org/10.1017/s0263593300020782 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0263593300020782 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Transactions of the Royal Society of Edinburgh: Earth Sciences volume 81, issue 4, page 251-261 ISSN 0263-5933 1473-7116 journal-article 1990 crcambridgeupr https://doi.org/10.1017/s0263593300020782 2024-07-31T04:02:45Z ABSTRACT Ocean Drilling Program (ODP) Site 677 provided excellent material for high resolution stable isotope analysis of both benthonic and planktonic foraminifera through the entire Pleistocene and upper Pliocene. The oxygen isotope record is readily correlated with the SPECMAP stack (Imbrie et al. 1984) and with the record from DSDP 607 (Ruddiman et al. 1986) but a significantly better match with orbital models is obtained by departing from the timescale proposed by these authors below Stage 16 (620 000 years). It is the stronger contribution from the precession signal in the record from ODP Site 677 that provides the basis for the revised timescale. Our proposed modification to the timescale would imply that the currently adopted radiometric dates for the Matuyama–Brunhes boundary, the Jaramillo and Olduvai Subchrons and the Gauss–Matuyama boundary underestimate their true astronomical ages by between 5 and 7%. Article in Journal/Newspaper Planktonic foraminifera Cambridge University Press Transactions of the Royal Society of Edinburgh: Earth Sciences 81 4 251 261 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
ABSTRACT Ocean Drilling Program (ODP) Site 677 provided excellent material for high resolution stable isotope analysis of both benthonic and planktonic foraminifera through the entire Pleistocene and upper Pliocene. The oxygen isotope record is readily correlated with the SPECMAP stack (Imbrie et al. 1984) and with the record from DSDP 607 (Ruddiman et al. 1986) but a significantly better match with orbital models is obtained by departing from the timescale proposed by these authors below Stage 16 (620 000 years). It is the stronger contribution from the precession signal in the record from ODP Site 677 that provides the basis for the revised timescale. Our proposed modification to the timescale would imply that the currently adopted radiometric dates for the Matuyama–Brunhes boundary, the Jaramillo and Olduvai Subchrons and the Gauss–Matuyama boundary underestimate their true astronomical ages by between 5 and 7%. |
format |
Article in Journal/Newspaper |
author |
Shackleton, N. J. Berger, A. Peltier, W. R. |
spellingShingle |
Shackleton, N. J. Berger, A. Peltier, W. R. An alternative astronomical calibration of the lower Pleistocene timescale based on ODP Site 677 |
author_facet |
Shackleton, N. J. Berger, A. Peltier, W. R. |
author_sort |
Shackleton, N. J. |
title |
An alternative astronomical calibration of the lower Pleistocene timescale based on ODP Site 677 |
title_short |
An alternative astronomical calibration of the lower Pleistocene timescale based on ODP Site 677 |
title_full |
An alternative astronomical calibration of the lower Pleistocene timescale based on ODP Site 677 |
title_fullStr |
An alternative astronomical calibration of the lower Pleistocene timescale based on ODP Site 677 |
title_full_unstemmed |
An alternative astronomical calibration of the lower Pleistocene timescale based on ODP Site 677 |
title_sort |
alternative astronomical calibration of the lower pleistocene timescale based on odp site 677 |
publisher |
Cambridge University Press (CUP) |
publishDate |
1990 |
url |
http://dx.doi.org/10.1017/s0263593300020782 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0263593300020782 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Transactions of the Royal Society of Edinburgh: Earth Sciences volume 81, issue 4, page 251-261 ISSN 0263-5933 1473-7116 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0263593300020782 |
container_title |
Transactions of the Royal Society of Edinburgh: Earth Sciences |
container_volume |
81 |
container_issue |
4 |
container_start_page |
251 |
op_container_end_page |
261 |
_version_ |
1809936143516434432 |