Geochemical and palynological measurements from the ODP Leg 189 at Site 1172 on the East Tasman Plateau
A brief (~150 kyr) period of widespread global average surface warming marks the transition between the Paleocene and Eocene epochs, ~56 million years ago. This so-called "Paleocene-Eocene thermal maximum" (PETM) is associated with the massive injection of 13C-depleted carbon, reflected in...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.756399 2023-05-15T13:42:10+02:00 Geochemical and palynological measurements from the ODP Leg 189 at Site 1172 on the East Tasman Plateau Sluijs, Appy Bijl, Peter K Schouten, Stefan Röhl, Ursula Reichart, Gert-Jan Brinkhuis, Henk LATITUDE: -43.959230 * LONGITUDE: 149.928610 * DATE/TIME START: 2000-04-28T11:30:00 * DATE/TIME END: 2000-05-03T21:00:00 2011-01-27 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.756399 https://doi.org/10.1594/PANGAEA.756399 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.756399 https://doi.org/10.1594/PANGAEA.756399 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Sluijs, Appy; Bijl, Peter K; Schouten, Stefan; Röhl, Ursula; Reichart, Gert-Jan; Brinkhuis, Henk (2011): Southern ocean warming, sea level and hydrological change during the Paleocene-Eocene thermal maximum. Climate of the Past, 7(1), 47-61, https://doi.org/10.5194/cp-7-47-2011 189-1172D Center for Marine Environmental Sciences DRILL Drilling/drill rig Joides Resolution Leg189 MARUM Ocean Drilling Program ODP Tasman Sea Dataset 2011 ftpangaea https://doi.org/10.1594/PANGAEA.756399 https://doi.org/10.5194/cp-7-47-2011 2023-01-20T07:32:01Z A brief (~150 kyr) period of widespread global average surface warming marks the transition between the Paleocene and Eocene epochs, ~56 million years ago. This so-called "Paleocene-Eocene thermal maximum" (PETM) is associated with the massive injection of 13C-depleted carbon, reflected in a negative carbon isotope excursion (CIE). Biotic responses include a global abundance peak (acme) of the subtropical dinoflagellate Apectodinium. Here we identify the PETM in a marine sedimentary sequence deposited on the East Tasman Plateau at Ocean Drilling Program (ODP) Site 1172 and show, based on the organic paleothermometer TEX86, that southwest Pacific sea surface temperatures increased from ~26 °C to ~33°C during the PETM. Such temperatures before, during and after the PETM are >10 °C warmer than predicted by paleoclimate model simulations for this latitude. In part, this discrepancy may be explained by potential seasonal biases in the TEX86 proxy in polar oceans. Additionally, the data suggest that not only Arctic, but also Antarctic temperatures may be underestimated in simulations of ancient greenhouse climates by current generation fully coupled climate models. An early influx of abundant Apectodinium confirms that environmental change preceded the CIE on a global scale. Organic dinoflagellate cyst assemblages suggest a local decrease in the amount of river run off reaching the core site during the PETM, possibly in concert with eustatic rise. Moreover, the assemblages suggest changes in seasonality of the regional hydrological system and storm activity. Finally, significant variation in dinoflagellate cyst assemblages during the PETM indicates that southwest Pacific climates varied significantly over time scales of 103 - 104 years during this event, a finding comparable to similar studies of PETM successions from the New Jersey Shelf. Dataset Antarc* Antarctic Arctic PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Arctic Pacific ENVELOPE(149.928610,149.928610,-43.959230,-43.959230) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
189-1172D Center for Marine Environmental Sciences DRILL Drilling/drill rig Joides Resolution Leg189 MARUM Ocean Drilling Program ODP Tasman Sea |
spellingShingle |
189-1172D Center for Marine Environmental Sciences DRILL Drilling/drill rig Joides Resolution Leg189 MARUM Ocean Drilling Program ODP Tasman Sea Sluijs, Appy Bijl, Peter K Schouten, Stefan Röhl, Ursula Reichart, Gert-Jan Brinkhuis, Henk Geochemical and palynological measurements from the ODP Leg 189 at Site 1172 on the East Tasman Plateau |
topic_facet |
189-1172D Center for Marine Environmental Sciences DRILL Drilling/drill rig Joides Resolution Leg189 MARUM Ocean Drilling Program ODP Tasman Sea |
description |
A brief (~150 kyr) period of widespread global average surface warming marks the transition between the Paleocene and Eocene epochs, ~56 million years ago. This so-called "Paleocene-Eocene thermal maximum" (PETM) is associated with the massive injection of 13C-depleted carbon, reflected in a negative carbon isotope excursion (CIE). Biotic responses include a global abundance peak (acme) of the subtropical dinoflagellate Apectodinium. Here we identify the PETM in a marine sedimentary sequence deposited on the East Tasman Plateau at Ocean Drilling Program (ODP) Site 1172 and show, based on the organic paleothermometer TEX86, that southwest Pacific sea surface temperatures increased from ~26 °C to ~33°C during the PETM. Such temperatures before, during and after the PETM are >10 °C warmer than predicted by paleoclimate model simulations for this latitude. In part, this discrepancy may be explained by potential seasonal biases in the TEX86 proxy in polar oceans. Additionally, the data suggest that not only Arctic, but also Antarctic temperatures may be underestimated in simulations of ancient greenhouse climates by current generation fully coupled climate models. An early influx of abundant Apectodinium confirms that environmental change preceded the CIE on a global scale. Organic dinoflagellate cyst assemblages suggest a local decrease in the amount of river run off reaching the core site during the PETM, possibly in concert with eustatic rise. Moreover, the assemblages suggest changes in seasonality of the regional hydrological system and storm activity. Finally, significant variation in dinoflagellate cyst assemblages during the PETM indicates that southwest Pacific climates varied significantly over time scales of 103 - 104 years during this event, a finding comparable to similar studies of PETM successions from the New Jersey Shelf. |
format |
Dataset |
author |
Sluijs, Appy Bijl, Peter K Schouten, Stefan Röhl, Ursula Reichart, Gert-Jan Brinkhuis, Henk |
author_facet |
Sluijs, Appy Bijl, Peter K Schouten, Stefan Röhl, Ursula Reichart, Gert-Jan Brinkhuis, Henk |
author_sort |
Sluijs, Appy |
title |
Geochemical and palynological measurements from the ODP Leg 189 at Site 1172 on the East Tasman Plateau |
title_short |
Geochemical and palynological measurements from the ODP Leg 189 at Site 1172 on the East Tasman Plateau |
title_full |
Geochemical and palynological measurements from the ODP Leg 189 at Site 1172 on the East Tasman Plateau |
title_fullStr |
Geochemical and palynological measurements from the ODP Leg 189 at Site 1172 on the East Tasman Plateau |
title_full_unstemmed |
Geochemical and palynological measurements from the ODP Leg 189 at Site 1172 on the East Tasman Plateau |
title_sort |
geochemical and palynological measurements from the odp leg 189 at site 1172 on the east tasman plateau |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.756399 https://doi.org/10.1594/PANGAEA.756399 |
op_coverage |
LATITUDE: -43.959230 * LONGITUDE: 149.928610 * DATE/TIME START: 2000-04-28T11:30:00 * DATE/TIME END: 2000-05-03T21:00:00 |
long_lat |
ENVELOPE(149.928610,149.928610,-43.959230,-43.959230) |
geographic |
Antarctic Arctic Pacific |
geographic_facet |
Antarctic Arctic Pacific |
genre |
Antarc* Antarctic Arctic |
genre_facet |
Antarc* Antarctic Arctic |
op_source |
Supplement to: Sluijs, Appy; Bijl, Peter K; Schouten, Stefan; Röhl, Ursula; Reichart, Gert-Jan; Brinkhuis, Henk (2011): Southern ocean warming, sea level and hydrological change during the Paleocene-Eocene thermal maximum. Climate of the Past, 7(1), 47-61, https://doi.org/10.5194/cp-7-47-2011 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.756399 https://doi.org/10.1594/PANGAEA.756399 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.756399 https://doi.org/10.5194/cp-7-47-2011 |
_version_ |
1766163961568296960 |