Biomarkers in turbidites at ODP Sites 157-951 and 157-952
Free and ester-bound lipid biomarkers were analysed in oxidised and unoxidised parts of four distinct turbidites from the Madeira Abyssal Plain (MAP), which contained 1 to 2% organic carbon homogeneously distributed throughout the turbidites at the time they were deposited. These turbidites are well...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.708704 2024-09-15T18:23:44+00:00 Biomarkers in turbidites at ODP Sites 157-951 and 157-952 Hoefs, Marcel JL Rijpstra, W Irene C Sinninghe Damsté, Jaap S MEDIAN LATITUDE: 31.354755 * MEDIAN LONGITUDE: -24.673636 * SOUTH-BOUND LATITUDE: 30.790800 * WEST-BOUND LONGITUDE: -24.870600 * NORTH-BOUND LATITUDE: 32.031500 * EAST-BOUND LONGITUDE: -24.509500 * DATE/TIME START: 1994-08-13T11:40:00 * DATE/TIME END: 1994-08-20T11:00:00 2002 application/zip, 11 datasets https://doi.pangaea.de/10.1594/PANGAEA.708704 https://doi.org/10.1594/PANGAEA.708704 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.708704 https://doi.org/10.1594/PANGAEA.708704 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Hoefs, Marcel JL; Rijpstra, W Irene C; Sinninghe Damsté, Jaap S (2002): The influence of oxic degradation on the sedimentary biomarker record I: Evidence from Madeira abyssal plain turbidites. Geochimica et Cosmochimica Acta, 66(15), 2719-2735, https://doi.org/10.1016/S0016-7037(02)00864-5 157-951B 157-952 157-952A Canarias Sea COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg157 North Atlantic Ocean Ocean Drilling Program ODP dataset publication series 2002 ftpangaea https://doi.org/10.1594/PANGAEA.70870410.1016/S0016-7037(02)00864-5 2024-08-21T00:02:25Z Free and ester-bound lipid biomarkers were analysed in oxidised and unoxidised parts of four distinct turbidites from the Madeira Abyssal Plain (MAP), which contained 1 to 2% organic carbon homogeneously distributed throughout the turbidites at the time they were deposited. These turbidites are well suited to study the effects of oxic degradation on lipid biomarkers without the complicating influence of varying organic matter sources, sedimentation rates, or bioturbation. One sample from the oxidised turbidite was compared with two samples from the unoxidised part of each turbidite. Postdepositional oxic degradation decreased concentrations of biomarkers by several orders of magnitude. The ester-bound lipids were degraded to a far lesser extent than their free counterparts were. The extent of degradation of different compounds differed substantially. Within a specific class of biomarkers, degradation also took place to a different extent, altering their distributions. This study shows that oxic degradation of the organic matter may have a profound effect on the biomarker fingerprint and may result in a severe bias in, for example, the interpretation of organic matter sources and the estimation of the palaeoproductivity of specific groups of phytoplankton. Other/Unknown Material North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-24.870600,-24.509500,32.031500,30.790800) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
157-951B 157-952 157-952A Canarias Sea COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg157 North Atlantic Ocean Ocean Drilling Program ODP |
spellingShingle |
157-951B 157-952 157-952A Canarias Sea COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg157 North Atlantic Ocean Ocean Drilling Program ODP Hoefs, Marcel JL Rijpstra, W Irene C Sinninghe Damsté, Jaap S Biomarkers in turbidites at ODP Sites 157-951 and 157-952 |
topic_facet |
157-951B 157-952 157-952A Canarias Sea COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg157 North Atlantic Ocean Ocean Drilling Program ODP |
description |
Free and ester-bound lipid biomarkers were analysed in oxidised and unoxidised parts of four distinct turbidites from the Madeira Abyssal Plain (MAP), which contained 1 to 2% organic carbon homogeneously distributed throughout the turbidites at the time they were deposited. These turbidites are well suited to study the effects of oxic degradation on lipid biomarkers without the complicating influence of varying organic matter sources, sedimentation rates, or bioturbation. One sample from the oxidised turbidite was compared with two samples from the unoxidised part of each turbidite. Postdepositional oxic degradation decreased concentrations of biomarkers by several orders of magnitude. The ester-bound lipids were degraded to a far lesser extent than their free counterparts were. The extent of degradation of different compounds differed substantially. Within a specific class of biomarkers, degradation also took place to a different extent, altering their distributions. This study shows that oxic degradation of the organic matter may have a profound effect on the biomarker fingerprint and may result in a severe bias in, for example, the interpretation of organic matter sources and the estimation of the palaeoproductivity of specific groups of phytoplankton. |
format |
Other/Unknown Material |
author |
Hoefs, Marcel JL Rijpstra, W Irene C Sinninghe Damsté, Jaap S |
author_facet |
Hoefs, Marcel JL Rijpstra, W Irene C Sinninghe Damsté, Jaap S |
author_sort |
Hoefs, Marcel JL |
title |
Biomarkers in turbidites at ODP Sites 157-951 and 157-952 |
title_short |
Biomarkers in turbidites at ODP Sites 157-951 and 157-952 |
title_full |
Biomarkers in turbidites at ODP Sites 157-951 and 157-952 |
title_fullStr |
Biomarkers in turbidites at ODP Sites 157-951 and 157-952 |
title_full_unstemmed |
Biomarkers in turbidites at ODP Sites 157-951 and 157-952 |
title_sort |
biomarkers in turbidites at odp sites 157-951 and 157-952 |
publisher |
PANGAEA |
publishDate |
2002 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.708704 https://doi.org/10.1594/PANGAEA.708704 |
op_coverage |
MEDIAN LATITUDE: 31.354755 * MEDIAN LONGITUDE: -24.673636 * SOUTH-BOUND LATITUDE: 30.790800 * WEST-BOUND LONGITUDE: -24.870600 * NORTH-BOUND LATITUDE: 32.031500 * EAST-BOUND LONGITUDE: -24.509500 * DATE/TIME START: 1994-08-13T11:40:00 * DATE/TIME END: 1994-08-20T11:00:00 |
long_lat |
ENVELOPE(-24.870600,-24.509500,32.031500,30.790800) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Hoefs, Marcel JL; Rijpstra, W Irene C; Sinninghe Damsté, Jaap S (2002): The influence of oxic degradation on the sedimentary biomarker record I: Evidence from Madeira abyssal plain turbidites. Geochimica et Cosmochimica Acta, 66(15), 2719-2735, https://doi.org/10.1016/S0016-7037(02)00864-5 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.708704 https://doi.org/10.1594/PANGAEA.708704 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.70870410.1016/S0016-7037(02)00864-5 |
_version_ |
1810464000511574016 |