Stable carbon and oxygen isotope record of foraminifera from ODP holes 104-643A and 104-644A
Continuous sediment sections spanning the last 2.8 Ma have been studied using stable isotope stratigraphy and sedimentological methods. By using paleomagnetic reversals as a chronostratigraphic tool, climatic and paleoceanographic changes have been placed in a time framework. The results show that t...
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1989
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.736356 2023-05-15T16:41:27+02:00 Stable carbon and oxygen isotope record of foraminifera from ODP holes 104-643A and 104-644A Jansen, Eystein Slettemark, B Bleil, Ulrich Henrich, Rüdiger Kringstad, L Rolfsen, S MEDIAN LATITUDE: 67.023867 * MEDIAN LONGITUDE: 3.395567 * SOUTH-BOUND LATITUDE: 66.678300 * WEST-BOUND LONGITUDE: 1.033300 * NORTH-BOUND LATITUDE: 67.715000 * EAST-BOUND LONGITUDE: 4.576700 * DATE/TIME START: 1985-08-03T06:07:00 * DATE/TIME END: 1985-08-09T10:15:00 1989-04-07 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.736356 https://doi.org/10.1594/PANGAEA.736356 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.736356 https://doi.org/10.1594/PANGAEA.736356 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Jansen, Eystein; Slettemark, B; Bleil, Ulrich; Henrich, Rüdiger; Kringstad, L; Rolfsen, S (1989): Oxygen and carbon isotope stratigraphy and magnetostratigraphy of the last 2.8 Ma: paleoclimatic comparisons between the Norwegian Sea and the North Atlantic. In: Eldholm, O; Thiede, J; Taylor, E; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 104, 255-269, https://doi.org/10.2973/odp.proc.sr.104.183.1989 104-643A 104-644A DRILL Drilling/drill rig Joides Resolution Leg104 Norwegian Sea Ocean Drilling Program ODP Dataset 1989 ftpangaea https://doi.org/10.1594/PANGAEA.736356 https://doi.org/10.2973/odp.proc.sr.104.183.1989 2023-01-20T07:31:43Z Continuous sediment sections spanning the last 2.8 Ma have been studied using stable isotope stratigraphy and sedimentological methods. By using paleomagnetic reversals as a chronostratigraphic tool, climatic and paleoceanographic changes have been placed in a time framework. The results show that the major expansion of the Scandinavian Ice Sheet to the coastal areas occurred in the late Neogene period at about 2.8 Ma. Relatively high-amplitude glacials appeared until about 2 Ma. The period between 2.8 and 1.2 Ma was marked by cold surface water conditions with only weak influx of temperate Atlantic water as compared with late Quaternary interglacials. During this period, climatic variations were smaller in amplitude than in the late Quaternary. The Norwegian Sea was a sink of deep water throughout the studied period but deep water ventilation was reduced and calcite dissolution was high compared with the Holocene. Deep water formed by other processes than today. Between 2 and 1.2 Ma, glaciations in Scandinavia were relatively small. A transition toward larger glacials took place during the period 1.2 to 0.6 Ma, corresponding with warmer interglacials and increasing influx of temperate surface water during interglacials. A strong thermal gradient was present between the Norwegian Sea and the northeastern Atlantic during the Matuyama (2.5-0.7 Ma). This is interpreted as a sign of a more zonal and less meridional climatic system over the region as compared with the present situation. The transition towards more meridionality took place over several hundred thousand yr. Only during the last 0.6 Ma has the oceanographic and climatic system of the Norwegian Sea varied in the manner described from previous studies of the late Quaternary. Dataset Ice Sheet Norwegian Sea PANGAEA - Data Publisher for Earth & Environmental Science Norwegian Sea ENVELOPE(1.033300,4.576700,67.715000,66.678300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
104-643A 104-644A DRILL Drilling/drill rig Joides Resolution Leg104 Norwegian Sea Ocean Drilling Program ODP |
spellingShingle |
104-643A 104-644A DRILL Drilling/drill rig Joides Resolution Leg104 Norwegian Sea Ocean Drilling Program ODP Jansen, Eystein Slettemark, B Bleil, Ulrich Henrich, Rüdiger Kringstad, L Rolfsen, S Stable carbon and oxygen isotope record of foraminifera from ODP holes 104-643A and 104-644A |
topic_facet |
104-643A 104-644A DRILL Drilling/drill rig Joides Resolution Leg104 Norwegian Sea Ocean Drilling Program ODP |
description |
Continuous sediment sections spanning the last 2.8 Ma have been studied using stable isotope stratigraphy and sedimentological methods. By using paleomagnetic reversals as a chronostratigraphic tool, climatic and paleoceanographic changes have been placed in a time framework. The results show that the major expansion of the Scandinavian Ice Sheet to the coastal areas occurred in the late Neogene period at about 2.8 Ma. Relatively high-amplitude glacials appeared until about 2 Ma. The period between 2.8 and 1.2 Ma was marked by cold surface water conditions with only weak influx of temperate Atlantic water as compared with late Quaternary interglacials. During this period, climatic variations were smaller in amplitude than in the late Quaternary. The Norwegian Sea was a sink of deep water throughout the studied period but deep water ventilation was reduced and calcite dissolution was high compared with the Holocene. Deep water formed by other processes than today. Between 2 and 1.2 Ma, glaciations in Scandinavia were relatively small. A transition toward larger glacials took place during the period 1.2 to 0.6 Ma, corresponding with warmer interglacials and increasing influx of temperate surface water during interglacials. A strong thermal gradient was present between the Norwegian Sea and the northeastern Atlantic during the Matuyama (2.5-0.7 Ma). This is interpreted as a sign of a more zonal and less meridional climatic system over the region as compared with the present situation. The transition towards more meridionality took place over several hundred thousand yr. Only during the last 0.6 Ma has the oceanographic and climatic system of the Norwegian Sea varied in the manner described from previous studies of the late Quaternary. |
format |
Dataset |
author |
Jansen, Eystein Slettemark, B Bleil, Ulrich Henrich, Rüdiger Kringstad, L Rolfsen, S |
author_facet |
Jansen, Eystein Slettemark, B Bleil, Ulrich Henrich, Rüdiger Kringstad, L Rolfsen, S |
author_sort |
Jansen, Eystein |
title |
Stable carbon and oxygen isotope record of foraminifera from ODP holes 104-643A and 104-644A |
title_short |
Stable carbon and oxygen isotope record of foraminifera from ODP holes 104-643A and 104-644A |
title_full |
Stable carbon and oxygen isotope record of foraminifera from ODP holes 104-643A and 104-644A |
title_fullStr |
Stable carbon and oxygen isotope record of foraminifera from ODP holes 104-643A and 104-644A |
title_full_unstemmed |
Stable carbon and oxygen isotope record of foraminifera from ODP holes 104-643A and 104-644A |
title_sort |
stable carbon and oxygen isotope record of foraminifera from odp holes 104-643a and 104-644a |
publisher |
PANGAEA |
publishDate |
1989 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.736356 https://doi.org/10.1594/PANGAEA.736356 |
op_coverage |
MEDIAN LATITUDE: 67.023867 * MEDIAN LONGITUDE: 3.395567 * SOUTH-BOUND LATITUDE: 66.678300 * WEST-BOUND LONGITUDE: 1.033300 * NORTH-BOUND LATITUDE: 67.715000 * EAST-BOUND LONGITUDE: 4.576700 * DATE/TIME START: 1985-08-03T06:07:00 * DATE/TIME END: 1985-08-09T10:15:00 |
long_lat |
ENVELOPE(1.033300,4.576700,67.715000,66.678300) |
geographic |
Norwegian Sea |
geographic_facet |
Norwegian Sea |
genre |
Ice Sheet Norwegian Sea |
genre_facet |
Ice Sheet Norwegian Sea |
op_source |
Supplement to: Jansen, Eystein; Slettemark, B; Bleil, Ulrich; Henrich, Rüdiger; Kringstad, L; Rolfsen, S (1989): Oxygen and carbon isotope stratigraphy and magnetostratigraphy of the last 2.8 Ma: paleoclimatic comparisons between the Norwegian Sea and the North Atlantic. In: Eldholm, O; Thiede, J; Taylor, E; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 104, 255-269, https://doi.org/10.2973/odp.proc.sr.104.183.1989 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.736356 https://doi.org/10.1594/PANGAEA.736356 |
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.736356 https://doi.org/10.2973/odp.proc.sr.104.183.1989 |
_version_ |
1766031879485521920 |