Organic carbon and biomarker record from the Laptev Sea continental margin
In order to understand the processes controlling organic carbon deposition (i.e., primary productivity vs. terrigenous supply) and their paleoceanographic significance, three sediment cores (PS2471, PS2474. and PS2476) from the Laptev Sea continental margin were investigated for their content and co...
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1999
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.733566 https://doi.org/10.1594/PANGAEA.733566 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.733566 2023-05-15T13:22:45+02:00 Organic carbon and biomarker record from the Laptev Sea continental margin Stein, Ruediger Fahl, Kirsten Niessen, Frank Siebold, Martina MEDIAN LATITUDE: 79.152219 * MEDIAN LONGITUDE: 111.804005 * SOUTH-BOUND LATITUDE: 77.390000 * WEST-BOUND LONGITUDE: 59.215000 * NORTH-BOUND LATITUDE: 87.589800 * EAST-BOUND LONGITUDE: 119.793330 * DATE/TIME START: 1991-08-13T00:00:00 * DATE/TIME END: 1993-09-17T00:00:00 1999-02-11 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.733566 https://doi.org/10.1594/PANGAEA.733566 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.733566 https://doi.org/10.1594/PANGAEA.733566 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Stein, Ruediger; Fahl, Kirsten; Niessen, Frank; Siebold, Martina (1999): Late quaternary organic carbon and biomarker records from the Laptev Sea continental margin (Arctic Ocean): implications for organic carbon flux and composition. In: Kassens, H; Bauch, H A; Dmitrenko, I A; Eicken, H; Hubberten, H-W; Melles, M; Thiede, J & Timokhov, L A (eds.), Land-ocean systems in the Siberian Arctic: dynamics and history, Springer, Berlin, Heidelberg, 635-656 Amundsen Basin ARK-IX/4 ARK-VIII/3 AWI_Paleo Gakkel Ridge Arctic Ocean Giant box corer Giant piston corer GKG GPC Gravity corer (Kiel type) KAL Kasten corer Laptev Sea Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS19/157 PS19/165 PS19 ARCTIC91 PS2163-4 PS2170-3 PS2471-4 PS2474-2 PS2474-3 PS2476-3 PS2476-4 PS27 PS27/054 PS27/059 PS27/062 Quaternary Environment of the Eurasian North QUEEN SL Dataset 1999 ftpangaea https://doi.org/10.1594/PANGAEA.733566 2023-01-20T07:31:39Z In order to understand the processes controlling organic carbon deposition (i.e., primary productivity vs. terrigenous supply) and their paleoceanographic significance, three sediment cores (PS2471, PS2474. and PS2476) from the Laptev Sea continental margin were investigated for their content and composition of organic carbon. The characterization of organic matter indudes the determination of buk parameters (hydrogen index values and C/N ratios) and the analysis of specific biomarkers (n-alaknes, fatty acids, alkenones, and pigments). Total organic carbon (TOC) values vary between 0.3 and 2%. In general, the organic matter from the Laptev Sea continental margin is dominated by terrigenous matter throughout. However. significant amounts of marine organic carbon occur. The turbidites, according to a still preliminary stratigraphy probably deposited during glacial Oxygen Isotope Stages 2 and 4, are characterized by maximum amounts of organic carbon of terrigenous origin. Marine organic carbon appears to show enhanced relative abundances in the Termination I (?) and early Holocene time intervals, as indicated by maximum amounts of short chain n-alkanes, short-chain fatty acids, and alkenones. The increased amounts of faity acids, however, may also have a freshwater origin due to increased river discharge at that time. The occurrence of alkenones is suggested to indicate an intensification of Atlantic water inflow along the Eurasian continental margin starting at that time. Oxygen Isotope Stage l accumutation rates of total organic carhon are 0.3, 0.17, and 0.02 C/cm**2/ky in cores PS2476, PS2474, and PS2471, respectively. Dataset amundsen basin Arctic Arctic Arctic Ocean laptev Laptev Sea PANGAEA - Data Publisher for Earth & Environmental Science Amundsen Basin ENVELOPE(74.000,74.000,87.000,87.000) Arctic Arctic Ocean Gakkel Ridge ENVELOPE(90.000,90.000,87.000,87.000) Laptev Sea ENVELOPE(59.215000,119.793330,87.589800,77.390000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Amundsen Basin ARK-IX/4 ARK-VIII/3 AWI_Paleo Gakkel Ridge Arctic Ocean Giant box corer Giant piston corer GKG GPC Gravity corer (Kiel type) KAL Kasten corer Laptev Sea Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS19/157 PS19/165 PS19 ARCTIC91 PS2163-4 PS2170-3 PS2471-4 PS2474-2 PS2474-3 PS2476-3 PS2476-4 PS27 PS27/054 PS27/059 PS27/062 Quaternary Environment of the Eurasian North QUEEN SL |
spellingShingle |
Amundsen Basin ARK-IX/4 ARK-VIII/3 AWI_Paleo Gakkel Ridge Arctic Ocean Giant box corer Giant piston corer GKG GPC Gravity corer (Kiel type) KAL Kasten corer Laptev Sea Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS19/157 PS19/165 PS19 ARCTIC91 PS2163-4 PS2170-3 PS2471-4 PS2474-2 PS2474-3 PS2476-3 PS2476-4 PS27 PS27/054 PS27/059 PS27/062 Quaternary Environment of the Eurasian North QUEEN SL Stein, Ruediger Fahl, Kirsten Niessen, Frank Siebold, Martina Organic carbon and biomarker record from the Laptev Sea continental margin |
topic_facet |
Amundsen Basin ARK-IX/4 ARK-VIII/3 AWI_Paleo Gakkel Ridge Arctic Ocean Giant box corer Giant piston corer GKG GPC Gravity corer (Kiel type) KAL Kasten corer Laptev Sea Paleoenvironmental Reconstructions from Marine Sediments @ AWI Polarstern PS19/157 PS19/165 PS19 ARCTIC91 PS2163-4 PS2170-3 PS2471-4 PS2474-2 PS2474-3 PS2476-3 PS2476-4 PS27 PS27/054 PS27/059 PS27/062 Quaternary Environment of the Eurasian North QUEEN SL |
description |
In order to understand the processes controlling organic carbon deposition (i.e., primary productivity vs. terrigenous supply) and their paleoceanographic significance, three sediment cores (PS2471, PS2474. and PS2476) from the Laptev Sea continental margin were investigated for their content and composition of organic carbon. The characterization of organic matter indudes the determination of buk parameters (hydrogen index values and C/N ratios) and the analysis of specific biomarkers (n-alaknes, fatty acids, alkenones, and pigments). Total organic carbon (TOC) values vary between 0.3 and 2%. In general, the organic matter from the Laptev Sea continental margin is dominated by terrigenous matter throughout. However. significant amounts of marine organic carbon occur. The turbidites, according to a still preliminary stratigraphy probably deposited during glacial Oxygen Isotope Stages 2 and 4, are characterized by maximum amounts of organic carbon of terrigenous origin. Marine organic carbon appears to show enhanced relative abundances in the Termination I (?) and early Holocene time intervals, as indicated by maximum amounts of short chain n-alkanes, short-chain fatty acids, and alkenones. The increased amounts of faity acids, however, may also have a freshwater origin due to increased river discharge at that time. The occurrence of alkenones is suggested to indicate an intensification of Atlantic water inflow along the Eurasian continental margin starting at that time. Oxygen Isotope Stage l accumutation rates of total organic carhon are 0.3, 0.17, and 0.02 C/cm**2/ky in cores PS2476, PS2474, and PS2471, respectively. |
format |
Dataset |
author |
Stein, Ruediger Fahl, Kirsten Niessen, Frank Siebold, Martina |
author_facet |
Stein, Ruediger Fahl, Kirsten Niessen, Frank Siebold, Martina |
author_sort |
Stein, Ruediger |
title |
Organic carbon and biomarker record from the Laptev Sea continental margin |
title_short |
Organic carbon and biomarker record from the Laptev Sea continental margin |
title_full |
Organic carbon and biomarker record from the Laptev Sea continental margin |
title_fullStr |
Organic carbon and biomarker record from the Laptev Sea continental margin |
title_full_unstemmed |
Organic carbon and biomarker record from the Laptev Sea continental margin |
title_sort |
organic carbon and biomarker record from the laptev sea continental margin |
publisher |
PANGAEA |
publishDate |
1999 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.733566 https://doi.org/10.1594/PANGAEA.733566 |
op_coverage |
MEDIAN LATITUDE: 79.152219 * MEDIAN LONGITUDE: 111.804005 * SOUTH-BOUND LATITUDE: 77.390000 * WEST-BOUND LONGITUDE: 59.215000 * NORTH-BOUND LATITUDE: 87.589800 * EAST-BOUND LONGITUDE: 119.793330 * DATE/TIME START: 1991-08-13T00:00:00 * DATE/TIME END: 1993-09-17T00:00:00 |
long_lat |
ENVELOPE(74.000,74.000,87.000,87.000) ENVELOPE(90.000,90.000,87.000,87.000) ENVELOPE(59.215000,119.793330,87.589800,77.390000) |
geographic |
Amundsen Basin Arctic Arctic Ocean Gakkel Ridge Laptev Sea |
geographic_facet |
Amundsen Basin Arctic Arctic Ocean Gakkel Ridge Laptev Sea |
genre |
amundsen basin Arctic Arctic Arctic Ocean laptev Laptev Sea |
genre_facet |
amundsen basin Arctic Arctic Arctic Ocean laptev Laptev Sea |
op_source |
Supplement to: Stein, Ruediger; Fahl, Kirsten; Niessen, Frank; Siebold, Martina (1999): Late quaternary organic carbon and biomarker records from the Laptev Sea continental margin (Arctic Ocean): implications for organic carbon flux and composition. In: Kassens, H; Bauch, H A; Dmitrenko, I A; Eicken, H; Hubberten, H-W; Melles, M; Thiede, J & Timokhov, L A (eds.), Land-ocean systems in the Siberian Arctic: dynamics and history, Springer, Berlin, Heidelberg, 635-656 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.733566 https://doi.org/10.1594/PANGAEA.733566 |
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.733566 |
_version_ |
1766366819023585280 |