Morphometric analysis of sediment conduits on a bathymetric high: Implications for palaeoenvironment and hydrocarbon prospectivity
Canyons and other sediment conduits are important components of the deep-water environment and are the main pathways for sediment transport from the shelf to the basin floor. Using 3-D and 2-D seismic reflection data, seismic facies and statistical morphometric analyses, this study showed the archit...
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Online Access: | http://hdl.handle.net/11250/2595078 https://doi.org/10.1111/bre.12291 |
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2595078 2023-05-15T15:39:10+02:00 Morphometric analysis of sediment conduits on a bathymetric high: Implications for palaeoenvironment and hydrocarbon prospectivity Harishidayat, Dicky Omosanya, Kamaldeen Olakunle Johansen, Ståle Emil Eruteya, Ovie Niyazi, Yakufu 2018 http://hdl.handle.net/11250/2595078 https://doi.org/10.1111/bre.12291 eng eng Wiley https://onlinelibrary.wiley.com/doi/full/10.1111/bre.12291 Basin Research. 2018, 30 (5), 1015-1041. urn:issn:0950-091X http://hdl.handle.net/11250/2595078 https://doi.org/10.1111/bre.12291 cristin:1582822 1015-1041 30 Basin Research 5 Journal article Peer reviewed 2018 ftntnutrondheimi https://doi.org/10.1111/bre.12291 2019-09-17T06:54:47Z Canyons and other sediment conduits are important components of the deep-water environment and are the main pathways for sediment transport from the shelf to the basin floor. Using 3-D and 2-D seismic reflection data, seismic facies and statistical morphometric analyses, this study showed the architectural evolution of five canyons, two slide scars and four gullies on the southern part of the Loppa High, Barents Sea. Morphometric parameters such as thalweg depth (lowest point on a conduit’s base), wall depth (middle point), height, width and base width, sinuosity, thalweg gradient, aspect ratio (width/height) and cross-sectional area of the conduits were measured at intervals of 250-m perpendicular to the conduits’ pathways. Our results show that the canyons and slide scars in the study area widen down slope, whereas the gullies are narrow and short with uniform widths. The sediment conduits in the study area evolved in three stages. The first stage is correlated with a time when erosion and bypass were dominant in the conduits, and sediment transferred to the basin in the south. The second stage occurred when basin subsidence was prevalent, and a widespread fine-grained sequence was deposited as a drape blanketing the canyons and other conduits. A final stage occurred when uplift and glacial erosion configured the entire southern Loppa High into an area of denudation. Our work demonstrates that the morphometric parameters of the canyons, slide scars and gullies generally have increasing linear trends with down-slope distance, irrespective of their geometries. The morphometric analysis of the sediment conduits in the study area has wider applications for understanding depositional processes, reservoir distribution and petroleum prospectivity in frontier basins. acceptedVersion Locked until 18.4.2019 due to copyright restrictions. This is the peer reviewed version of an article, which has been published in final form at [https://doi.org/10.1111/bre.12291]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. Article in Journal/Newspaper Barents Sea Loppa NTNU Open Archive (Norwegian University of Science and Technology) Barents Sea Loppa ENVELOPE(22.351,22.351,70.240,70.240) Middle Point ENVELOPE(-111.550,-111.550,75.888,75.888) Basin Research 30 5 1015 1041 |
institution |
Open Polar |
collection |
NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
language |
English |
description |
Canyons and other sediment conduits are important components of the deep-water environment and are the main pathways for sediment transport from the shelf to the basin floor. Using 3-D and 2-D seismic reflection data, seismic facies and statistical morphometric analyses, this study showed the architectural evolution of five canyons, two slide scars and four gullies on the southern part of the Loppa High, Barents Sea. Morphometric parameters such as thalweg depth (lowest point on a conduit’s base), wall depth (middle point), height, width and base width, sinuosity, thalweg gradient, aspect ratio (width/height) and cross-sectional area of the conduits were measured at intervals of 250-m perpendicular to the conduits’ pathways. Our results show that the canyons and slide scars in the study area widen down slope, whereas the gullies are narrow and short with uniform widths. The sediment conduits in the study area evolved in three stages. The first stage is correlated with a time when erosion and bypass were dominant in the conduits, and sediment transferred to the basin in the south. The second stage occurred when basin subsidence was prevalent, and a widespread fine-grained sequence was deposited as a drape blanketing the canyons and other conduits. A final stage occurred when uplift and glacial erosion configured the entire southern Loppa High into an area of denudation. Our work demonstrates that the morphometric parameters of the canyons, slide scars and gullies generally have increasing linear trends with down-slope distance, irrespective of their geometries. The morphometric analysis of the sediment conduits in the study area has wider applications for understanding depositional processes, reservoir distribution and petroleum prospectivity in frontier basins. acceptedVersion Locked until 18.4.2019 due to copyright restrictions. This is the peer reviewed version of an article, which has been published in final form at [https://doi.org/10.1111/bre.12291]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. |
format |
Article in Journal/Newspaper |
author |
Harishidayat, Dicky Omosanya, Kamaldeen Olakunle Johansen, Ståle Emil Eruteya, Ovie Niyazi, Yakufu |
spellingShingle |
Harishidayat, Dicky Omosanya, Kamaldeen Olakunle Johansen, Ståle Emil Eruteya, Ovie Niyazi, Yakufu Morphometric analysis of sediment conduits on a bathymetric high: Implications for palaeoenvironment and hydrocarbon prospectivity |
author_facet |
Harishidayat, Dicky Omosanya, Kamaldeen Olakunle Johansen, Ståle Emil Eruteya, Ovie Niyazi, Yakufu |
author_sort |
Harishidayat, Dicky |
title |
Morphometric analysis of sediment conduits on a bathymetric high: Implications for palaeoenvironment and hydrocarbon prospectivity |
title_short |
Morphometric analysis of sediment conduits on a bathymetric high: Implications for palaeoenvironment and hydrocarbon prospectivity |
title_full |
Morphometric analysis of sediment conduits on a bathymetric high: Implications for palaeoenvironment and hydrocarbon prospectivity |
title_fullStr |
Morphometric analysis of sediment conduits on a bathymetric high: Implications for palaeoenvironment and hydrocarbon prospectivity |
title_full_unstemmed |
Morphometric analysis of sediment conduits on a bathymetric high: Implications for palaeoenvironment and hydrocarbon prospectivity |
title_sort |
morphometric analysis of sediment conduits on a bathymetric high: implications for palaeoenvironment and hydrocarbon prospectivity |
publisher |
Wiley |
publishDate |
2018 |
url |
http://hdl.handle.net/11250/2595078 https://doi.org/10.1111/bre.12291 |
long_lat |
ENVELOPE(22.351,22.351,70.240,70.240) ENVELOPE(-111.550,-111.550,75.888,75.888) |
geographic |
Barents Sea Loppa Middle Point |
geographic_facet |
Barents Sea Loppa Middle Point |
genre |
Barents Sea Loppa |
genre_facet |
Barents Sea Loppa |
op_source |
1015-1041 30 Basin Research 5 |
op_relation |
https://onlinelibrary.wiley.com/doi/full/10.1111/bre.12291 Basin Research. 2018, 30 (5), 1015-1041. urn:issn:0950-091X http://hdl.handle.net/11250/2595078 https://doi.org/10.1111/bre.12291 cristin:1582822 |
op_doi |
https://doi.org/10.1111/bre.12291 |
container_title |
Basin Research |
container_volume |
30 |
container_issue |
5 |
container_start_page |
1015 |
op_container_end_page |
1041 |
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1766370633974808576 |