Climatic dependence of the organic matter contributions in the north eastern Norwegian Sea over the last 15,000 years
14 pages, 5 figures, 1 table.-- Printed version published Aug 2003. Lipids are used for the evaluation of the different organic matter contributions in the north eastern Norwegian Sea (M23258 site, 75°N, 14°E) over the last 15,000 years. Development of a mass balance model based on the down-core qua...
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | http://hdl.handle.net/10261/19905 https://doi.org/10.1016/S0146-6380(03)00084-6 |
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ftcsic:oai:digital.csic.es:10261/19905 2024-02-11T10:01:47+01:00 Climatic dependence of the organic matter contributions in the north eastern Norwegian Sea over the last 15,000 years Martrat, Belen Grimalt, Joan O. Villanueva, Joan van Kreveld, Shirley Sarnthein, Michael 2003-07-01 22195 bytes application/pdf http://hdl.handle.net/10261/19905 https://doi.org/10.1016/S0146-6380(03)00084-6 en eng Elsevier http://dx.doi.org/10.1016/S0146-6380(03)00084-6 Organic Geochemistry 34(8): 1057-1070 (2003) 0146-6380 (Print) http://hdl.handle.net/10261/19905 doi:10.1016/S0146-6380(03)00084-6 none Total Organic Carbon (TOC) Climatic dependence Open marine sediments Barents Sea artículo http://purl.org/coar/resource_type/c_6501 2003 ftcsic https://doi.org/10.1016/S0146-6380(03)00084-6 2024-01-16T09:24:58Z 14 pages, 5 figures, 1 table.-- Printed version published Aug 2003. Lipids are used for the evaluation of the different organic matter contributions in the north eastern Norwegian Sea (M23258 site, 75°N, 14°E) over the last 15,000 years. Development of a mass balance model based on the down-core quantification of the C37 alkenones, the odd carbon numbered n-alkanes (Aodd) and the unresolved complex mixture of hydrocarbons (UCM) has allowed three main organic matter inputs involving marine, continental and ancient reworked organic matter to be recognized. The model shows good agreement between measured and reconstructed TOC values. Similarly, a strong parallelism is observed between predicted components such as marine TOC and carbonate content, which was determined independently. Representation of the model results within a time scale based on 15 AMS-14C measurements shows that the main changes in organic matter constituents are coincident with the major climatic events of the last 15,000 years. Thus, the predominance of reworked organic matter is characteristic of Termination Ia (up to 70%), continental organic matter was dominant during the Bølling-Allerød (B-A) and Younger Dryas (YD) periods (about 85%) and a strong increase of marine organic matter occurred in the Holocene (between 50 and 75%). This agreement reflects the main hydrographic changes that determined the deposition of sedimentary materials between 0 and 15 cal ka: ice-rafted detritus from the Barents continental platform, ice-melting waters from the Arctic fluvial system discharging into the Barents Sea and dominance of North Atlantic currents, respectively. In this respect, the high-resolution down-core record resulting from the mass balance and lipid measurements allows for the identification of millennial scale events such as the increase of reworked organic matter at the final retreat of the Barents ice sheet at the end of the deglaciation period (Termination Ib). This work was supported by the Holocene Project (ENV4-CT97-0162) and the ... Article in Journal/Newspaper Arctic Barents Sea Ice Sheet North Atlantic Norwegian Sea Digital.CSIC (Spanish National Research Council) Arctic Barents Sea Norwegian Sea Organic Geochemistry 34 8 1057 1070 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Total Organic Carbon (TOC) Climatic dependence Open marine sediments Barents Sea |
spellingShingle |
Total Organic Carbon (TOC) Climatic dependence Open marine sediments Barents Sea Martrat, Belen Grimalt, Joan O. Villanueva, Joan van Kreveld, Shirley Sarnthein, Michael Climatic dependence of the organic matter contributions in the north eastern Norwegian Sea over the last 15,000 years |
topic_facet |
Total Organic Carbon (TOC) Climatic dependence Open marine sediments Barents Sea |
description |
14 pages, 5 figures, 1 table.-- Printed version published Aug 2003. Lipids are used for the evaluation of the different organic matter contributions in the north eastern Norwegian Sea (M23258 site, 75°N, 14°E) over the last 15,000 years. Development of a mass balance model based on the down-core quantification of the C37 alkenones, the odd carbon numbered n-alkanes (Aodd) and the unresolved complex mixture of hydrocarbons (UCM) has allowed three main organic matter inputs involving marine, continental and ancient reworked organic matter to be recognized. The model shows good agreement between measured and reconstructed TOC values. Similarly, a strong parallelism is observed between predicted components such as marine TOC and carbonate content, which was determined independently. Representation of the model results within a time scale based on 15 AMS-14C measurements shows that the main changes in organic matter constituents are coincident with the major climatic events of the last 15,000 years. Thus, the predominance of reworked organic matter is characteristic of Termination Ia (up to 70%), continental organic matter was dominant during the Bølling-Allerød (B-A) and Younger Dryas (YD) periods (about 85%) and a strong increase of marine organic matter occurred in the Holocene (between 50 and 75%). This agreement reflects the main hydrographic changes that determined the deposition of sedimentary materials between 0 and 15 cal ka: ice-rafted detritus from the Barents continental platform, ice-melting waters from the Arctic fluvial system discharging into the Barents Sea and dominance of North Atlantic currents, respectively. In this respect, the high-resolution down-core record resulting from the mass balance and lipid measurements allows for the identification of millennial scale events such as the increase of reworked organic matter at the final retreat of the Barents ice sheet at the end of the deglaciation period (Termination Ib). This work was supported by the Holocene Project (ENV4-CT97-0162) and the ... |
format |
Article in Journal/Newspaper |
author |
Martrat, Belen Grimalt, Joan O. Villanueva, Joan van Kreveld, Shirley Sarnthein, Michael |
author_facet |
Martrat, Belen Grimalt, Joan O. Villanueva, Joan van Kreveld, Shirley Sarnthein, Michael |
author_sort |
Martrat, Belen |
title |
Climatic dependence of the organic matter contributions in the north eastern Norwegian Sea over the last 15,000 years |
title_short |
Climatic dependence of the organic matter contributions in the north eastern Norwegian Sea over the last 15,000 years |
title_full |
Climatic dependence of the organic matter contributions in the north eastern Norwegian Sea over the last 15,000 years |
title_fullStr |
Climatic dependence of the organic matter contributions in the north eastern Norwegian Sea over the last 15,000 years |
title_full_unstemmed |
Climatic dependence of the organic matter contributions in the north eastern Norwegian Sea over the last 15,000 years |
title_sort |
climatic dependence of the organic matter contributions in the north eastern norwegian sea over the last 15,000 years |
publisher |
Elsevier |
publishDate |
2003 |
url |
http://hdl.handle.net/10261/19905 https://doi.org/10.1016/S0146-6380(03)00084-6 |
geographic |
Arctic Barents Sea Norwegian Sea |
geographic_facet |
Arctic Barents Sea Norwegian Sea |
genre |
Arctic Barents Sea Ice Sheet North Atlantic Norwegian Sea |
genre_facet |
Arctic Barents Sea Ice Sheet North Atlantic Norwegian Sea |
op_relation |
http://dx.doi.org/10.1016/S0146-6380(03)00084-6 Organic Geochemistry 34(8): 1057-1070 (2003) 0146-6380 (Print) http://hdl.handle.net/10261/19905 doi:10.1016/S0146-6380(03)00084-6 |
op_rights |
none |
op_doi |
https://doi.org/10.1016/S0146-6380(03)00084-6 |
container_title |
Organic Geochemistry |
container_volume |
34 |
container_issue |
8 |
container_start_page |
1057 |
op_container_end_page |
1070 |
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1790597588407287808 |