(Table 1) CPI17-23, hopanoic acid, and n-C35 + lycopane/n-C31 ratios as well as 17beta(H), 21beta(H) homohopane, long-chain alkanes, and alkenones concentrations in IODP Exp302
During Integrated Ocean Drilling Program Expedition 302 (Arctic Coring Expedition (ACEX)) a more than 200 m thick sequence of Paleogene organic carbon (OC)-rich (black shale type) sediments was drilled. Here we present new biomarker data determined in ACEX sediment samples to decipher processes cont...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.733333 2023-05-15T14:25:02+02:00 (Table 1) CPI17-23, hopanoic acid, and n-C35 + lycopane/n-C31 ratios as well as 17beta(H), 21beta(H) homohopane, long-chain alkanes, and alkenones concentrations in IODP Exp302 Weller, Petra Stein, Ruediger LATITUDE: 87.890000 * LONGITUDE: 137.650000 * MINIMUM DEPTH, sediment/rock: 196.380 m * MAXIMUM DEPTH, sediment/rock: 404.160 m 2010-02-02 text/tab-separated-values, 394 data points https://doi.pangaea.de/10.1594/PANGAEA.733333 https://doi.org/10.1594/PANGAEA.733333 en eng PANGAEA Weller, Petra; Stein, Ruediger (2008): Paleogene biomarker records from the central Arctic Ocean (Integrated Ocean Drilling Program Expedition 302): Organic carbon sources, anoxia, and sea surface temperature. Paleoceanography, 23, PA1S17, https://doi.org/10.1029/2007PA001472 https://doi.pangaea.de/10.1594/PANGAEA.733333 https://doi.org/10.1594/PANGAEA.733333 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY 302-CompSite Alkenone C37:3+C37:2 Arctic Coring Expedition ACEX Calculated Carbon Preference Index of n-Alkanes (C17-C33) Comment COMPCORE Composite Core DEPTH sediment/rock Exp302 Gas chromatography - Mass spectrometry (GC-MS) Homohopane 17beta(H) 21beta(H) per unit mass total organic carbon Hopanoic acid ratio betabeta/betaalpha+alphabeta Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Long-chain n-alkanes C27+C29+C31 n-Alkane C35/C31 ratio Sample code/label Vidar Viking Dataset 2010 ftpangaea https://doi.org/10.1594/PANGAEA.733333 https://doi.org/10.1029/2007PA001472 2023-01-20T08:49:37Z During Integrated Ocean Drilling Program Expedition 302 (Arctic Coring Expedition (ACEX)) a more than 200 m thick sequence of Paleogene organic carbon (OC)-rich (black shale type) sediments was drilled. Here we present new biomarker data determined in ACEX sediment samples to decipher processes controlling OC accumulation and their paleoenvironmental significance during periods of Paleogene global warmth and proposed increased freshwater discharge in the early Cenozoic. Specific source-related biomarkers including n-alkanes, fatty acids, isoprenoids, carotenoids, hopanes/hopenes, hopanoic acids, aromatic terpenoids, and long-chain alkenones show a high variability of components, derived from marine and terrestrial origin. The distribution of hopanoic acid isomers is dominated by compounds with the biological 17beta(H), 21beta(H) configuration indicating a low level of maturity. On the basis of the biomarker data the terrestrial OC supply was significantly enriched during the late Paleocene and part of the earliest Eocene, whereas increased aquatic contributions and euxinic conditions of variable intensity were determined for the Paleocene-Eocene thermal maximum and Eocene thermal maximum 2 events as well as the middle Eocene time interval. Furthermore, samples from the middle Eocene are characterized by the occurrence of long-chain alkenones, high proportions of lycopane, and high ratios (>0.6) of (n-C35 + lycopane)/n-C31. The occurrence of C37-alkenenones, which were first determined toward the end of the Azolla freshwater event, indicates that the OC becomes more marine in origin during the middle Eocene. Preliminary UK'37- based sea surface temperature (SST) values display a longterm temperature decrease of about 15C during the time interval 49-44.5 Ma (25° to 10°C), coinciding with the global benthic d18O cooling trend after the early Eocene climatic optimum. At about 46 Ma, parallel with onset of ice-rafted debris, SST (interpreted as summer temperatures) decreased to values <15°C. For the late early ... Dataset Arctic Arctic PANGAEA - Data Publisher for Earth & Environmental Science Arctic ENVELOPE(137.650000,137.650000,87.890000,87.890000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
302-CompSite Alkenone C37:3+C37:2 Arctic Coring Expedition ACEX Calculated Carbon Preference Index of n-Alkanes (C17-C33) Comment COMPCORE Composite Core DEPTH sediment/rock Exp302 Gas chromatography - Mass spectrometry (GC-MS) Homohopane 17beta(H) 21beta(H) per unit mass total organic carbon Hopanoic acid ratio betabeta/betaalpha+alphabeta Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Long-chain n-alkanes C27+C29+C31 n-Alkane C35/C31 ratio Sample code/label Vidar Viking |
spellingShingle |
302-CompSite Alkenone C37:3+C37:2 Arctic Coring Expedition ACEX Calculated Carbon Preference Index of n-Alkanes (C17-C33) Comment COMPCORE Composite Core DEPTH sediment/rock Exp302 Gas chromatography - Mass spectrometry (GC-MS) Homohopane 17beta(H) 21beta(H) per unit mass total organic carbon Hopanoic acid ratio betabeta/betaalpha+alphabeta Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Long-chain n-alkanes C27+C29+C31 n-Alkane C35/C31 ratio Sample code/label Vidar Viking Weller, Petra Stein, Ruediger (Table 1) CPI17-23, hopanoic acid, and n-C35 + lycopane/n-C31 ratios as well as 17beta(H), 21beta(H) homohopane, long-chain alkanes, and alkenones concentrations in IODP Exp302 |
topic_facet |
302-CompSite Alkenone C37:3+C37:2 Arctic Coring Expedition ACEX Calculated Carbon Preference Index of n-Alkanes (C17-C33) Comment COMPCORE Composite Core DEPTH sediment/rock Exp302 Gas chromatography - Mass spectrometry (GC-MS) Homohopane 17beta(H) 21beta(H) per unit mass total organic carbon Hopanoic acid ratio betabeta/betaalpha+alphabeta Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Long-chain n-alkanes C27+C29+C31 n-Alkane C35/C31 ratio Sample code/label Vidar Viking |
description |
During Integrated Ocean Drilling Program Expedition 302 (Arctic Coring Expedition (ACEX)) a more than 200 m thick sequence of Paleogene organic carbon (OC)-rich (black shale type) sediments was drilled. Here we present new biomarker data determined in ACEX sediment samples to decipher processes controlling OC accumulation and their paleoenvironmental significance during periods of Paleogene global warmth and proposed increased freshwater discharge in the early Cenozoic. Specific source-related biomarkers including n-alkanes, fatty acids, isoprenoids, carotenoids, hopanes/hopenes, hopanoic acids, aromatic terpenoids, and long-chain alkenones show a high variability of components, derived from marine and terrestrial origin. The distribution of hopanoic acid isomers is dominated by compounds with the biological 17beta(H), 21beta(H) configuration indicating a low level of maturity. On the basis of the biomarker data the terrestrial OC supply was significantly enriched during the late Paleocene and part of the earliest Eocene, whereas increased aquatic contributions and euxinic conditions of variable intensity were determined for the Paleocene-Eocene thermal maximum and Eocene thermal maximum 2 events as well as the middle Eocene time interval. Furthermore, samples from the middle Eocene are characterized by the occurrence of long-chain alkenones, high proportions of lycopane, and high ratios (>0.6) of (n-C35 + lycopane)/n-C31. The occurrence of C37-alkenenones, which were first determined toward the end of the Azolla freshwater event, indicates that the OC becomes more marine in origin during the middle Eocene. Preliminary UK'37- based sea surface temperature (SST) values display a longterm temperature decrease of about 15C during the time interval 49-44.5 Ma (25° to 10°C), coinciding with the global benthic d18O cooling trend after the early Eocene climatic optimum. At about 46 Ma, parallel with onset of ice-rafted debris, SST (interpreted as summer temperatures) decreased to values <15°C. For the late early ... |
format |
Dataset |
author |
Weller, Petra Stein, Ruediger |
author_facet |
Weller, Petra Stein, Ruediger |
author_sort |
Weller, Petra |
title |
(Table 1) CPI17-23, hopanoic acid, and n-C35 + lycopane/n-C31 ratios as well as 17beta(H), 21beta(H) homohopane, long-chain alkanes, and alkenones concentrations in IODP Exp302 |
title_short |
(Table 1) CPI17-23, hopanoic acid, and n-C35 + lycopane/n-C31 ratios as well as 17beta(H), 21beta(H) homohopane, long-chain alkanes, and alkenones concentrations in IODP Exp302 |
title_full |
(Table 1) CPI17-23, hopanoic acid, and n-C35 + lycopane/n-C31 ratios as well as 17beta(H), 21beta(H) homohopane, long-chain alkanes, and alkenones concentrations in IODP Exp302 |
title_fullStr |
(Table 1) CPI17-23, hopanoic acid, and n-C35 + lycopane/n-C31 ratios as well as 17beta(H), 21beta(H) homohopane, long-chain alkanes, and alkenones concentrations in IODP Exp302 |
title_full_unstemmed |
(Table 1) CPI17-23, hopanoic acid, and n-C35 + lycopane/n-C31 ratios as well as 17beta(H), 21beta(H) homohopane, long-chain alkanes, and alkenones concentrations in IODP Exp302 |
title_sort |
(table 1) cpi17-23, hopanoic acid, and n-c35 + lycopane/n-c31 ratios as well as 17beta(h), 21beta(h) homohopane, long-chain alkanes, and alkenones concentrations in iodp exp302 |
publisher |
PANGAEA |
publishDate |
2010 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.733333 https://doi.org/10.1594/PANGAEA.733333 |
op_coverage |
LATITUDE: 87.890000 * LONGITUDE: 137.650000 * MINIMUM DEPTH, sediment/rock: 196.380 m * MAXIMUM DEPTH, sediment/rock: 404.160 m |
long_lat |
ENVELOPE(137.650000,137.650000,87.890000,87.890000) |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic |
genre_facet |
Arctic Arctic |
op_relation |
Weller, Petra; Stein, Ruediger (2008): Paleogene biomarker records from the central Arctic Ocean (Integrated Ocean Drilling Program Expedition 302): Organic carbon sources, anoxia, and sea surface temperature. Paleoceanography, 23, PA1S17, https://doi.org/10.1029/2007PA001472 https://doi.pangaea.de/10.1594/PANGAEA.733333 https://doi.org/10.1594/PANGAEA.733333 |
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.733333 https://doi.org/10.1029/2007PA001472 |
_version_ |
1766297463720771584 |