Hydrocarbon gases in ODP Leg 104 samples
Geochemical studies at three ODP Leg 104 sites on the Wring Plateau help define the distribution of hydrocarbon gases in sediment of this prominent feature of the Norwegian continental margin. Low levels of hydrocarbon gas were encountered in sediment of the outer part of the plateau, but sediment o...
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PANGAEA
1989
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.736715 2023-05-15T17:47:06+02:00 Hydrocarbon gases in ODP Leg 104 samples Kvenvolden, Keith A Golan-Bac, Margaret McDonald, Thomas J Pflaum, Ronald C Brooks, James M MEDIAN LATITUDE: 67.205100 * MEDIAN LONGITUDE: 2.846439 * SOUTH-BOUND LATITUDE: 66.678300 * WEST-BOUND LONGITUDE: 1.033300 * NORTH-BOUND LATITUDE: 67.715000 * EAST-BOUND LONGITUDE: 4.576700 * DATE/TIME START: 1985-06-28T00:00:00 * DATE/TIME END: 1985-08-10T00:00:00 1989-04-14 application/zip, 6 datasets https://doi.pangaea.de/10.1594/PANGAEA.736715 https://doi.org/10.1594/PANGAEA.736715 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.736715 https://doi.org/10.1594/PANGAEA.736715 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Kvenvolden, Keith A; Golan-Bac, Margaret; McDonald, Thomas J; Pflaum, Ronald C; Brooks, James M (1989): Hydrocarbon gases in sediment of the Vøring Plateau, Norwegian Sea. In: Eldholm, O; Thiede, J; Taylor, E; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 104, 319-326, https://doi.org/10.2973/odp.proc.sr.104.125.1989 104-642 104-643A 104-644 104-644A COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg104 Norwegian Sea Ocean Drilling Program ODP Dataset 1989 ftpangaea https://doi.org/10.1594/PANGAEA.736715 https://doi.org/10.2973/odp.proc.sr.104.125.1989 2023-01-20T07:31:44Z Geochemical studies at three ODP Leg 104 sites on the Wring Plateau help define the distribution of hydrocarbon gases in sediment of this prominent feature of the Norwegian continental margin. Low levels of hydrocarbon gas were encountered in sediment of the outer part of the plateau, but sediment of the inner part of the plateau is very gassy. The molecular composition of inner plateau gases (>99.9% methane) and the carbon isotopic composition of the methane (avg. = -76 per mil relative to the PDB standard) clearly show that the gas is biogenic. Heavier hydrocarbon gases accompany this methane, and their presence is probably a result of both chemical and microbial low-temperature diagenesis. Although these heavier hydrocarbons were not detected in sediment of the outer part of the plateau during shipboard analyses, subsequent shore-based analyses showed that these compounds are present at very low concentrations. Methane in the gassy sediment of the inner part of the plateau may be present as gas hydrates, judging from sedimentological and inorganic geochemical considerations, but no discernible gas hydrates were recovered during drilling. Dataset Norwegian Sea PANGAEA - Data Publisher for Earth & Environmental Science Norwegian Sea ENVELOPE(1.033300,4.576700,67.715000,66.678300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
104-642 104-643A 104-644 104-644A COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg104 Norwegian Sea Ocean Drilling Program ODP |
spellingShingle |
104-642 104-643A 104-644 104-644A COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg104 Norwegian Sea Ocean Drilling Program ODP Kvenvolden, Keith A Golan-Bac, Margaret McDonald, Thomas J Pflaum, Ronald C Brooks, James M Hydrocarbon gases in ODP Leg 104 samples |
topic_facet |
104-642 104-643A 104-644 104-644A COMPCORE Composite Core DRILL Drilling/drill rig Joides Resolution Leg104 Norwegian Sea Ocean Drilling Program ODP |
description |
Geochemical studies at three ODP Leg 104 sites on the Wring Plateau help define the distribution of hydrocarbon gases in sediment of this prominent feature of the Norwegian continental margin. Low levels of hydrocarbon gas were encountered in sediment of the outer part of the plateau, but sediment of the inner part of the plateau is very gassy. The molecular composition of inner plateau gases (>99.9% methane) and the carbon isotopic composition of the methane (avg. = -76 per mil relative to the PDB standard) clearly show that the gas is biogenic. Heavier hydrocarbon gases accompany this methane, and their presence is probably a result of both chemical and microbial low-temperature diagenesis. Although these heavier hydrocarbons were not detected in sediment of the outer part of the plateau during shipboard analyses, subsequent shore-based analyses showed that these compounds are present at very low concentrations. Methane in the gassy sediment of the inner part of the plateau may be present as gas hydrates, judging from sedimentological and inorganic geochemical considerations, but no discernible gas hydrates were recovered during drilling. |
format |
Dataset |
author |
Kvenvolden, Keith A Golan-Bac, Margaret McDonald, Thomas J Pflaum, Ronald C Brooks, James M |
author_facet |
Kvenvolden, Keith A Golan-Bac, Margaret McDonald, Thomas J Pflaum, Ronald C Brooks, James M |
author_sort |
Kvenvolden, Keith A |
title |
Hydrocarbon gases in ODP Leg 104 samples |
title_short |
Hydrocarbon gases in ODP Leg 104 samples |
title_full |
Hydrocarbon gases in ODP Leg 104 samples |
title_fullStr |
Hydrocarbon gases in ODP Leg 104 samples |
title_full_unstemmed |
Hydrocarbon gases in ODP Leg 104 samples |
title_sort |
hydrocarbon gases in odp leg 104 samples |
publisher |
PANGAEA |
publishDate |
1989 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.736715 https://doi.org/10.1594/PANGAEA.736715 |
op_coverage |
MEDIAN LATITUDE: 67.205100 * MEDIAN LONGITUDE: 2.846439 * SOUTH-BOUND LATITUDE: 66.678300 * WEST-BOUND LONGITUDE: 1.033300 * NORTH-BOUND LATITUDE: 67.715000 * EAST-BOUND LONGITUDE: 4.576700 * DATE/TIME START: 1985-06-28T00:00:00 * DATE/TIME END: 1985-08-10T00:00:00 |
long_lat |
ENVELOPE(1.033300,4.576700,67.715000,66.678300) |
geographic |
Norwegian Sea |
geographic_facet |
Norwegian Sea |
genre |
Norwegian Sea |
genre_facet |
Norwegian Sea |
op_source |
Supplement to: Kvenvolden, Keith A; Golan-Bac, Margaret; McDonald, Thomas J; Pflaum, Ronald C; Brooks, James M (1989): Hydrocarbon gases in sediment of the Vøring Plateau, Norwegian Sea. In: Eldholm, O; Thiede, J; Taylor, E; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 104, 319-326, https://doi.org/10.2973/odp.proc.sr.104.125.1989 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.736715 https://doi.org/10.1594/PANGAEA.736715 |
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.736715 https://doi.org/10.2973/odp.proc.sr.104.125.1989 |
_version_ |
1766151420323561472 |