Age model based on planktic foraminiferal stable isotopes for sediment core Site 199-1218 from the equatorial Pacific
A planktonic and benthic foraminiferal stable isotope stratigraphy of the Oligocene equatorial Pacific (Ocean Drilling Program, Site 1218) was generated at 6 kyr resolution between magnetochrons C9n and C11n.2n (ab. 26.4–30 Ma on a newly developed astronomically calibrated timescale). Our data allow...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.547798 2024-09-15T17:48:05+00:00 Age model based on planktic foraminiferal stable isotopes for sediment core Site 199-1218 from the equatorial Pacific Wade, Bridget S Pälike, Heiko LATITUDE: 8.889630 * LONGITUDE: -135.366660 * DATE/TIME START: 2001-11-14T00:00:00 * DATE/TIME END: 2001-11-14T00:00:00 * MINIMUM DEPTH, sediment/rock: 14.92 m * MAXIMUM DEPTH, sediment/rock: 164.60 m 2006 text/tab-separated-values, 3944 data points https://doi.pangaea.de/10.1594/PANGAEA.547798 https://doi.org/10.1594/PANGAEA.547798 en eng PANGAEA Wade, Bridget S; Pälike, Heiko (2005): Data report: Oligocene paleoceanography of the equatorial Pacific Ocean: planktonic and benthic foraminifer stable isotope results from Site 1218. In: Wilson, PA; Lyle, M; Firth, JV (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 199, 1-12, https://doi.org/10.2973/odp.proc.sr.199.209.2005 https://doi.pangaea.de/10.1594/PANGAEA.547798 https://doi.org/10.1594/PANGAEA.547798 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Wade, Bridget S; Pälike, Heiko (2004): Oligocene climate dynamics. Paleoceanography, 19, PA4019, https://doi.org/10.1029/2004PA001042 199-1218 Age model COMPCORE Composite Core Depth composite composite revised sediment/rock DSDP/ODP/IODP sample designation Globoquadrina venezuelana δ13C δ18O Joides Resolution Leg199 North Pacific Ocean Ocean Drilling Program ODP Sample code/label dataset 2006 ftpangaea https://doi.org/10.1594/PANGAEA.54779810.1029/2004PA00104210.2973/odp.proc.sr.199.209.2005 2024-07-24T02:31:27Z A planktonic and benthic foraminiferal stable isotope stratigraphy of the Oligocene equatorial Pacific (Ocean Drilling Program, Site 1218) was generated at 6 kyr resolution between magnetochrons C9n and C11n.2n (ab. 26.4–30 Ma on a newly developed astronomically calibrated timescale). Our data allow a detailed examination of Oligocene paleoceanography, the evolution of the early cryosphere, and the influence of orbital forcing on glacioeustatic sea level variations. Spectral analysis reveals power and coherency for obliquity (40 kyr period) and eccentricity (ab. 110, 405 kyr) orbital bands, with an additional strong imprint of the eccentricity and 1.2 Myr obliquity amplitude cycle, driving ice sheet oscillations in the Southern Hemisphere. Planktonic and benthic foraminifera d18O are used to constrain the magnitude and timing of major fluctuations in ice volume and global sea level change. Glacial episodes, related to obliquity and eccentricity variations, occurred at 29.16, 27.91, and 26.76 Ma, corresponding to glacioeustatic sea level fluctuations of 50–65 m. Alteration of high-latitude temperatures and Antarctic ice volume had a significant impact on the global carbon burial and equatorial productivity, as cyclic variations are also recorded in the carbon isotope signal of planktonic and benthic foraminifera, the water column carbon isotope gradient, and estimated percent carbonate of bulk sediment. We also investigate the implications of a close correspondence between oxygen and carbon isotope events and long-term amplitude envelope extrema in astronomical calculations during the Oligocene, and develop a new naming scheme for stable isotope events, on the basis of the 405 kyr eccentricity cycle count. Dataset Antarc* Antarctic Ice Sheet PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-135.366660,-135.366660,8.889630,8.889630) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
199-1218 Age model COMPCORE Composite Core Depth composite composite revised sediment/rock DSDP/ODP/IODP sample designation Globoquadrina venezuelana δ13C δ18O Joides Resolution Leg199 North Pacific Ocean Ocean Drilling Program ODP Sample code/label |
spellingShingle |
199-1218 Age model COMPCORE Composite Core Depth composite composite revised sediment/rock DSDP/ODP/IODP sample designation Globoquadrina venezuelana δ13C δ18O Joides Resolution Leg199 North Pacific Ocean Ocean Drilling Program ODP Sample code/label Wade, Bridget S Pälike, Heiko Age model based on planktic foraminiferal stable isotopes for sediment core Site 199-1218 from the equatorial Pacific |
topic_facet |
199-1218 Age model COMPCORE Composite Core Depth composite composite revised sediment/rock DSDP/ODP/IODP sample designation Globoquadrina venezuelana δ13C δ18O Joides Resolution Leg199 North Pacific Ocean Ocean Drilling Program ODP Sample code/label |
description |
A planktonic and benthic foraminiferal stable isotope stratigraphy of the Oligocene equatorial Pacific (Ocean Drilling Program, Site 1218) was generated at 6 kyr resolution between magnetochrons C9n and C11n.2n (ab. 26.4–30 Ma on a newly developed astronomically calibrated timescale). Our data allow a detailed examination of Oligocene paleoceanography, the evolution of the early cryosphere, and the influence of orbital forcing on glacioeustatic sea level variations. Spectral analysis reveals power and coherency for obliquity (40 kyr period) and eccentricity (ab. 110, 405 kyr) orbital bands, with an additional strong imprint of the eccentricity and 1.2 Myr obliquity amplitude cycle, driving ice sheet oscillations in the Southern Hemisphere. Planktonic and benthic foraminifera d18O are used to constrain the magnitude and timing of major fluctuations in ice volume and global sea level change. Glacial episodes, related to obliquity and eccentricity variations, occurred at 29.16, 27.91, and 26.76 Ma, corresponding to glacioeustatic sea level fluctuations of 50–65 m. Alteration of high-latitude temperatures and Antarctic ice volume had a significant impact on the global carbon burial and equatorial productivity, as cyclic variations are also recorded in the carbon isotope signal of planktonic and benthic foraminifera, the water column carbon isotope gradient, and estimated percent carbonate of bulk sediment. We also investigate the implications of a close correspondence between oxygen and carbon isotope events and long-term amplitude envelope extrema in astronomical calculations during the Oligocene, and develop a new naming scheme for stable isotope events, on the basis of the 405 kyr eccentricity cycle count. |
format |
Dataset |
author |
Wade, Bridget S Pälike, Heiko |
author_facet |
Wade, Bridget S Pälike, Heiko |
author_sort |
Wade, Bridget S |
title |
Age model based on planktic foraminiferal stable isotopes for sediment core Site 199-1218 from the equatorial Pacific |
title_short |
Age model based on planktic foraminiferal stable isotopes for sediment core Site 199-1218 from the equatorial Pacific |
title_full |
Age model based on planktic foraminiferal stable isotopes for sediment core Site 199-1218 from the equatorial Pacific |
title_fullStr |
Age model based on planktic foraminiferal stable isotopes for sediment core Site 199-1218 from the equatorial Pacific |
title_full_unstemmed |
Age model based on planktic foraminiferal stable isotopes for sediment core Site 199-1218 from the equatorial Pacific |
title_sort |
age model based on planktic foraminiferal stable isotopes for sediment core site 199-1218 from the equatorial pacific |
publisher |
PANGAEA |
publishDate |
2006 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.547798 https://doi.org/10.1594/PANGAEA.547798 |
op_coverage |
LATITUDE: 8.889630 * LONGITUDE: -135.366660 * DATE/TIME START: 2001-11-14T00:00:00 * DATE/TIME END: 2001-11-14T00:00:00 * MINIMUM DEPTH, sediment/rock: 14.92 m * MAXIMUM DEPTH, sediment/rock: 164.60 m |
long_lat |
ENVELOPE(-135.366660,-135.366660,8.889630,8.889630) |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_source |
Supplement to: Wade, Bridget S; Pälike, Heiko (2004): Oligocene climate dynamics. Paleoceanography, 19, PA4019, https://doi.org/10.1029/2004PA001042 |
op_relation |
Wade, Bridget S; Pälike, Heiko (2005): Data report: Oligocene paleoceanography of the equatorial Pacific Ocean: planktonic and benthic foraminifer stable isotope results from Site 1218. In: Wilson, PA; Lyle, M; Firth, JV (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 199, 1-12, https://doi.org/10.2973/odp.proc.sr.199.209.2005 https://doi.pangaea.de/10.1594/PANGAEA.547798 https://doi.org/10.1594/PANGAEA.547798 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.54779810.1029/2004PA00104210.2973/odp.proc.sr.199.209.2005 |
_version_ |
1810289011669860352 |