Mean element and biogenic silica concentrations in Arctic Ocean sediments (Table 1)
Quantitative determination of biogenic silica in Late Cretaceous and Paleogene deep-sea sediment cores from the central Arctic Ocean provides evidence of open-ocean polar upwelling. The timing of polar upwelling coincides with periods of a weakened meridional thermal gradient, suggesting that heat t...
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1982
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.701639 2023-05-15T13:20:23+02:00 Mean element and biogenic silica concentrations in Arctic Ocean sediments (Table 1) Kitchell, Jennifer A Clark, David L MEDIAN LATITUDE: 24.536850 * MEDIAN LONGITUDE: -159.802450 * SOUTH-BOUND LATITUDE: 9.176500 * WEST-BOUND LONGITUDE: 145.666300 * NORTH-BOUND LATITUDE: 39.897200 * EAST-BOUND LONGITUDE: -105.271200 * DATE/TIME START: 1977-05-14T00:00:00 * DATE/TIME END: 1977-10-06T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.80 m * MAXIMUM DEPTH, sediment/rock: 3.03 m 1982-09-03 text/tab-separated-values, 28 data points https://doi.pangaea.de/10.1594/PANGAEA.701639 https://doi.org/10.1594/PANGAEA.701639 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.701639 https://doi.org/10.1594/PANGAEA.701639 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Kitchell, Jennifer A; Clark, David L (1982): Late Cretaceous-Paleogene paleogeography and paleocirculation: evidence of north polar upwelling. Palaeogeography, Palaeoclimatology, Palaeoecology, 40(1-3), 135-165, https://doi.org/10.1016/0031-0182(82)90087-6 54-422 56-437 Aluminium Atomic absorption spectrometry (AAS) Calculated Deep Sea Drilling Project Depth bottom/max sediment/rock top/min DRILL Drilling/drill rig DSDP Elevation of event Event label Glomar Challenger Latitude of event Leg54 Leg56 Longitude of event Magnesium North Pacific North Pacific/RIDGE Opal biogenic silica Silicon Silicon dioxide Dataset 1982 ftpangaea https://doi.org/10.1594/PANGAEA.701639 https://doi.org/10.1016/0031-0182(82)90087-6 2023-01-20T08:46:38Z Quantitative determination of biogenic silica in Late Cretaceous and Paleogene deep-sea sediment cores from the central Arctic Ocean provides evidence of open-ocean polar upwelling. The timing of polar upwelling coincides with periods of a weakened meridional thermal gradient, suggesting that heat transport to the poles by oceanic circulation may have been important. The timing of biogenic silica deposition in the Arctic precedes its deposition in both the Norwegian-Greenland Sea of the North Atlantic and the Bering Sea of the North Pacific. Tectonic events may be responsible for the timing and siting of sites of deposition of biogenic silica in high northern latitudes, particularly the tectonic evolution of sites of deep-water exchange between the Arctic and the world ocean. We outline three phases in the post-mid-Cretaceous history of silica deposition in high northern latitudes. During Phase I, the Arctic is a silica sink, with deep-water formation but with no deep-water outflow. The transition to Phase II is brought about by opening of the Svalbard-Greenland Strait to deep-water outflow from the Arctic to the Norwegian-Greenland Sea. The transition to Phase III is initiated by submergence of the Faroe-Iceland Ridge and deep-water outflow from the Arctic to the North Atlantic. Climatic conditions in the Arctic during Late Cretaceous and Paleogene time are predicted to have favored open-ocean upwelling due to a circulation pattern dominated by cyclonic conditions, resulting from the establishment of a semi-permanent atmospheric low over the Alpha Ridge. Bathymetry of the Alpha Ridge may have intensified paleo-upwelling. Dataset alpha ridge Arctic Arctic Ocean Bering Sea Greenland Greenland Sea Iceland North Atlantic Svalbard PANGAEA - Data Publisher for Earth & Environmental Science Alpha Ridge ENVELOPE(-120.000,-120.000,85.500,85.500) Arctic Arctic Ocean Bering Sea Faroe-Iceland Ridge ENVELOPE(-10.000,-10.000,64.000,64.000) Greenland Pacific Svalbard ENVELOPE(145.666300,-105.271200,39.897200,9.176500) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
54-422 56-437 Aluminium Atomic absorption spectrometry (AAS) Calculated Deep Sea Drilling Project Depth bottom/max sediment/rock top/min DRILL Drilling/drill rig DSDP Elevation of event Event label Glomar Challenger Latitude of event Leg54 Leg56 Longitude of event Magnesium North Pacific North Pacific/RIDGE Opal biogenic silica Silicon Silicon dioxide |
spellingShingle |
54-422 56-437 Aluminium Atomic absorption spectrometry (AAS) Calculated Deep Sea Drilling Project Depth bottom/max sediment/rock top/min DRILL Drilling/drill rig DSDP Elevation of event Event label Glomar Challenger Latitude of event Leg54 Leg56 Longitude of event Magnesium North Pacific North Pacific/RIDGE Opal biogenic silica Silicon Silicon dioxide Kitchell, Jennifer A Clark, David L Mean element and biogenic silica concentrations in Arctic Ocean sediments (Table 1) |
topic_facet |
54-422 56-437 Aluminium Atomic absorption spectrometry (AAS) Calculated Deep Sea Drilling Project Depth bottom/max sediment/rock top/min DRILL Drilling/drill rig DSDP Elevation of event Event label Glomar Challenger Latitude of event Leg54 Leg56 Longitude of event Magnesium North Pacific North Pacific/RIDGE Opal biogenic silica Silicon Silicon dioxide |
description |
Quantitative determination of biogenic silica in Late Cretaceous and Paleogene deep-sea sediment cores from the central Arctic Ocean provides evidence of open-ocean polar upwelling. The timing of polar upwelling coincides with periods of a weakened meridional thermal gradient, suggesting that heat transport to the poles by oceanic circulation may have been important. The timing of biogenic silica deposition in the Arctic precedes its deposition in both the Norwegian-Greenland Sea of the North Atlantic and the Bering Sea of the North Pacific. Tectonic events may be responsible for the timing and siting of sites of deposition of biogenic silica in high northern latitudes, particularly the tectonic evolution of sites of deep-water exchange between the Arctic and the world ocean. We outline three phases in the post-mid-Cretaceous history of silica deposition in high northern latitudes. During Phase I, the Arctic is a silica sink, with deep-water formation but with no deep-water outflow. The transition to Phase II is brought about by opening of the Svalbard-Greenland Strait to deep-water outflow from the Arctic to the Norwegian-Greenland Sea. The transition to Phase III is initiated by submergence of the Faroe-Iceland Ridge and deep-water outflow from the Arctic to the North Atlantic. Climatic conditions in the Arctic during Late Cretaceous and Paleogene time are predicted to have favored open-ocean upwelling due to a circulation pattern dominated by cyclonic conditions, resulting from the establishment of a semi-permanent atmospheric low over the Alpha Ridge. Bathymetry of the Alpha Ridge may have intensified paleo-upwelling. |
format |
Dataset |
author |
Kitchell, Jennifer A Clark, David L |
author_facet |
Kitchell, Jennifer A Clark, David L |
author_sort |
Kitchell, Jennifer A |
title |
Mean element and biogenic silica concentrations in Arctic Ocean sediments (Table 1) |
title_short |
Mean element and biogenic silica concentrations in Arctic Ocean sediments (Table 1) |
title_full |
Mean element and biogenic silica concentrations in Arctic Ocean sediments (Table 1) |
title_fullStr |
Mean element and biogenic silica concentrations in Arctic Ocean sediments (Table 1) |
title_full_unstemmed |
Mean element and biogenic silica concentrations in Arctic Ocean sediments (Table 1) |
title_sort |
mean element and biogenic silica concentrations in arctic ocean sediments (table 1) |
publisher |
PANGAEA |
publishDate |
1982 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.701639 https://doi.org/10.1594/PANGAEA.701639 |
op_coverage |
MEDIAN LATITUDE: 24.536850 * MEDIAN LONGITUDE: -159.802450 * SOUTH-BOUND LATITUDE: 9.176500 * WEST-BOUND LONGITUDE: 145.666300 * NORTH-BOUND LATITUDE: 39.897200 * EAST-BOUND LONGITUDE: -105.271200 * DATE/TIME START: 1977-05-14T00:00:00 * DATE/TIME END: 1977-10-06T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.80 m * MAXIMUM DEPTH, sediment/rock: 3.03 m |
long_lat |
ENVELOPE(-120.000,-120.000,85.500,85.500) ENVELOPE(-10.000,-10.000,64.000,64.000) ENVELOPE(145.666300,-105.271200,39.897200,9.176500) |
geographic |
Alpha Ridge Arctic Arctic Ocean Bering Sea Faroe-Iceland Ridge Greenland Pacific Svalbard |
geographic_facet |
Alpha Ridge Arctic Arctic Ocean Bering Sea Faroe-Iceland Ridge Greenland Pacific Svalbard |
genre |
alpha ridge Arctic Arctic Ocean Bering Sea Greenland Greenland Sea Iceland North Atlantic Svalbard |
genre_facet |
alpha ridge Arctic Arctic Ocean Bering Sea Greenland Greenland Sea Iceland North Atlantic Svalbard |
op_source |
Supplement to: Kitchell, Jennifer A; Clark, David L (1982): Late Cretaceous-Paleogene paleogeography and paleocirculation: evidence of north polar upwelling. Palaeogeography, Palaeoclimatology, Palaeoecology, 40(1-3), 135-165, https://doi.org/10.1016/0031-0182(82)90087-6 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.701639 https://doi.org/10.1594/PANGAEA.701639 |
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.701639 https://doi.org/10.1016/0031-0182(82)90087-6 |
_version_ |
1766353171476643840 |