Isotope measurements from ODP Hole 104-642B
The Pliocene (5.3-2.6 Ma) is often described as a relatively stable climatic period, with warm temperatures characterizing high latitudes. New suborbital resolved stable isotope records from ODP Hole 642B in the Eastern Nordic Seas document that the Pliocene was not a stable period characterized by...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.863867 2023-05-15T14:27:54+02:00 Isotope measurements from ODP Hole 104-642B Risebrobakken, Bjørg Andersson, Carin De Schepper, Stijn McClymont, Erin L LATITUDE: 67.225000 * LONGITUDE: 2.928300 * DATE/TIME START: 1985-06-28T14:40:00 * DATE/TIME END: 1985-06-29T20:15:00 * MINIMUM DEPTH, sediment/rock: 66.87 m * MAXIMUM DEPTH, sediment/rock: 83.61 m 2016-08-17 text/tab-separated-values, 6507 data points https://doi.pangaea.de/10.1594/PANGAEA.863867 https://doi.org/10.1594/PANGAEA.863867 en eng PANGAEA Jansen, Eystein; Sjøholm, J; Bleil, Ulrich; Erichsen, JA (1990): Neogene and Pleistocene glaciations in the northern hemisphere and late Miocene - Pliocene global ice volume fluctuations: Evidence from the Norwegian Sea. In: Geological History of the Polar Oceans: Arctic Versus Antarctic, edited by U. Bleil and J. Thiede, Kluwer Academic Publishers, the Netherlands, 677-705 https://doi.pangaea.de/10.1594/PANGAEA.863867 https://doi.org/10.1594/PANGAEA.863867 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Risebrobakken, Bjørg; Andersson, Carin; De Schepper, Stijn; McClymont, Erin L (2016): Low-frequency Pliocene climate variability in the eastern Nordic Seas. Paleoceanography, 31(9), 1154-1175, https://doi.org/10.1002/2015PA002918 104-642B AGE Cassidulina teretis δ13C δ18O Corrected DEPTH sediment/rock top/min DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Globigerina bulloides Joides Resolution Leg104 Mass spectrometer Finnigan MAT 252 and Finnigan MAT 253 Norwegian Sea Sample code/label Dataset 2016 ftpangaea https://doi.org/10.1594/PANGAEA.863867 https://doi.org/10.1002/2015PA002918 2023-01-20T09:07:35Z The Pliocene (5.3-2.6 Ma) is often described as a relatively stable climatic period, with warm temperatures characterizing high latitudes. New suborbital resolved stable isotope records from ODP Hole 642B in the Eastern Nordic Seas document that the Pliocene was not a stable period characterized by one climate. Rather, seven distinct climate phases, each lasting between 150,000 and 400,000 years, are identified and characterized in the time interval 5.1-3.1 Ma. Four of the transitions between the defined climate phases occurred close to an eccentricity minimum and a minimum in amplitude of change for Northern Hemisphere summer insolation, while two occurred around an eccentricity maximum and a maximum in amplitude in insolation change. Hence, a low frequency response of the Nordic Seas to insolation forcing is indicated. In addition, paleogeographic and related paleoceanographic changes, expansion of the Arctic sea ice cover and onset of NHG were important factors behind the evolving Pliocene low frequency variability in the eastern Nordic Seas. It is likely that the identified climate phases and transitions are important beyond the Nordic Seas, due to their association with changes to both insolation and paleogeography. Also, a strong and variable degree of diagenetic calcite overgrowth is documented for the planktic foraminifera, especially influencing the planktic d18O results; the absolute values and amplitude of change cannot be taken at face value. Dataset Arctic Arctic Foraminifera* Nordic Seas Norwegian Sea Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Arctic Norwegian Sea ENVELOPE(2.928300,2.928300,67.225000,67.225000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
104-642B AGE Cassidulina teretis δ13C δ18O Corrected DEPTH sediment/rock top/min DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Globigerina bulloides Joides Resolution Leg104 Mass spectrometer Finnigan MAT 252 and Finnigan MAT 253 Norwegian Sea Sample code/label |
spellingShingle |
104-642B AGE Cassidulina teretis δ13C δ18O Corrected DEPTH sediment/rock top/min DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Globigerina bulloides Joides Resolution Leg104 Mass spectrometer Finnigan MAT 252 and Finnigan MAT 253 Norwegian Sea Sample code/label Risebrobakken, Bjørg Andersson, Carin De Schepper, Stijn McClymont, Erin L Isotope measurements from ODP Hole 104-642B |
topic_facet |
104-642B AGE Cassidulina teretis δ13C δ18O Corrected DEPTH sediment/rock top/min DRILL Drilling/drill rig DSDP/ODP/IODP sample designation Globigerina bulloides Joides Resolution Leg104 Mass spectrometer Finnigan MAT 252 and Finnigan MAT 253 Norwegian Sea Sample code/label |
description |
The Pliocene (5.3-2.6 Ma) is often described as a relatively stable climatic period, with warm temperatures characterizing high latitudes. New suborbital resolved stable isotope records from ODP Hole 642B in the Eastern Nordic Seas document that the Pliocene was not a stable period characterized by one climate. Rather, seven distinct climate phases, each lasting between 150,000 and 400,000 years, are identified and characterized in the time interval 5.1-3.1 Ma. Four of the transitions between the defined climate phases occurred close to an eccentricity minimum and a minimum in amplitude of change for Northern Hemisphere summer insolation, while two occurred around an eccentricity maximum and a maximum in amplitude in insolation change. Hence, a low frequency response of the Nordic Seas to insolation forcing is indicated. In addition, paleogeographic and related paleoceanographic changes, expansion of the Arctic sea ice cover and onset of NHG were important factors behind the evolving Pliocene low frequency variability in the eastern Nordic Seas. It is likely that the identified climate phases and transitions are important beyond the Nordic Seas, due to their association with changes to both insolation and paleogeography. Also, a strong and variable degree of diagenetic calcite overgrowth is documented for the planktic foraminifera, especially influencing the planktic d18O results; the absolute values and amplitude of change cannot be taken at face value. |
format |
Dataset |
author |
Risebrobakken, Bjørg Andersson, Carin De Schepper, Stijn McClymont, Erin L |
author_facet |
Risebrobakken, Bjørg Andersson, Carin De Schepper, Stijn McClymont, Erin L |
author_sort |
Risebrobakken, Bjørg |
title |
Isotope measurements from ODP Hole 104-642B |
title_short |
Isotope measurements from ODP Hole 104-642B |
title_full |
Isotope measurements from ODP Hole 104-642B |
title_fullStr |
Isotope measurements from ODP Hole 104-642B |
title_full_unstemmed |
Isotope measurements from ODP Hole 104-642B |
title_sort |
isotope measurements from odp hole 104-642b |
publisher |
PANGAEA |
publishDate |
2016 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.863867 https://doi.org/10.1594/PANGAEA.863867 |
op_coverage |
LATITUDE: 67.225000 * LONGITUDE: 2.928300 * DATE/TIME START: 1985-06-28T14:40:00 * DATE/TIME END: 1985-06-29T20:15:00 * MINIMUM DEPTH, sediment/rock: 66.87 m * MAXIMUM DEPTH, sediment/rock: 83.61 m |
long_lat |
ENVELOPE(2.928300,2.928300,67.225000,67.225000) |
geographic |
Arctic Norwegian Sea |
geographic_facet |
Arctic Norwegian Sea |
genre |
Arctic Arctic Foraminifera* Nordic Seas Norwegian Sea Sea ice |
genre_facet |
Arctic Arctic Foraminifera* Nordic Seas Norwegian Sea Sea ice |
op_source |
Supplement to: Risebrobakken, Bjørg; Andersson, Carin; De Schepper, Stijn; McClymont, Erin L (2016): Low-frequency Pliocene climate variability in the eastern Nordic Seas. Paleoceanography, 31(9), 1154-1175, https://doi.org/10.1002/2015PA002918 |
op_relation |
Jansen, Eystein; Sjøholm, J; Bleil, Ulrich; Erichsen, JA (1990): Neogene and Pleistocene glaciations in the northern hemisphere and late Miocene - Pliocene global ice volume fluctuations: Evidence from the Norwegian Sea. In: Geological History of the Polar Oceans: Arctic Versus Antarctic, edited by U. Bleil and J. Thiede, Kluwer Academic Publishers, the Netherlands, 677-705 https://doi.pangaea.de/10.1594/PANGAEA.863867 https://doi.org/10.1594/PANGAEA.863867 |
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.863867 https://doi.org/10.1002/2015PA002918 |
_version_ |
1766301965563723776 |