Tidal amplification and along‐strike process variability in a mixed‐energy paralic system prograding onto a low accommodation shelf, Edgeøya, Svalbard
The study describes the depositional development and sediment partitioning in a prograding paralic Triassic succession. The deposits are associated with the advance of large prism‐scale clinoforms across a shallower platform area. Approaching the platform, the limited accommodation and associated re...
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ftoslouniv:oai:www.duo.uio.no:10852/81079 2024-09-30T14:34:20+00:00 Tidal amplification and along‐strike process variability in a mixed‐energy paralic system prograding onto a low accommodation shelf, Edgeøya, Svalbard Anell, Ingrid Margareta Zuchuat, Valentin Röhnert, A.D. Smyrak-Sikora, Aleksandra Buckley, Simon John Lord, Gareth Steven Maher, H. Midtkandal, Ivar Ogata, Kei Olaussen, Snorre Osmundsen, Per Terje Braathen, Alvar 2020-06-11T23:10:16Z http://hdl.handle.net/10852/81079 http://urn.nb.no/URN:NBN:no-84164 https://doi.org/10.1111/bre.12482 EN eng http://urn.nb.no/URN:NBN:no-84164 Anell, Ingrid Margareta Zuchuat, Valentin Röhnert, A.D. Smyrak-Sikora, Aleksandra Buckley, Simon John Lord, Gareth Steven Maher, H. Midtkandal, Ivar Ogata, Kei Olaussen, Snorre Osmundsen, Per Terje Braathen, Alvar . Tidal amplification and along‐strike process variability in a mixed‐energy paralic system prograding onto a low accommodation shelf, Edgeøya, Svalbard. Basin Research. 2020 http://hdl.handle.net/10852/81079 1815140 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Basin Research&rft.volume=&rft.spage=&rft.date=2020 Basin Research 35 https://doi.org/10.1111/bre.12482 URN:NBN:no-84164 Fulltext https://www.duo.uio.no/bitstream/handle/10852/81079/1/bre.12482%2B%25281%2529.pdf Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ 0950-091X VDP::Geofag: 450 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2020 ftoslouniv https://doi.org/10.1111/bre.12482 2024-09-12T05:44:03Z The study describes the depositional development and sediment partitioning in a prograding paralic Triassic succession. The deposits are associated with the advance of large prism‐scale clinoforms across a shallower platform area. Approaching the platform, the limited accommodation and associated relative higher rates of deposition generated straighter clinoforms with lower foreset angles. The vertical restriction across the platform is interpreted to have amplified the tidal signature. Sediment was redistributed from the coast into increasingly sandy delta‐front deposits, compared to offshore equivalents. The deposits comprise extensive compound dune fields of amalgamated and increasingly clean sandbodies up‐section. Rapid deposition of significant amounts of sand led to differential subsidence and growth‐faulting in the delta front, with downthrown fault blocks further amplifying the tidal energy through funnelling. A mixed‐energy environment created along‐strike variability along the delta front with sedimentation governing process‐regime. Areas of lower sedimentation were reworked by wave and storm‐action, whereas high sedimentation rates preserved fluvially dominated mouth bars. A major transgression, however, favoured tidally dominated deposits also in these areas, attributed to increasing rugosity of the coastline. Formation of an extensive subaqueous platform between the coast and delta front dampened incoming wave energy, and tidally dominated deposits dominate the near‐shore successions. Meanwhile formation of wave‐built sand‐bars atop the platform attest to continued wave influence. The strong tidal regime led to the development of a heterolithic near‐shore tidally dominated channel system, and sandier fluvial channels up‐river. The highly meandering tidal channels incising the subaqueous platform form kilometre wide successions of inclined heterolithic stratification. The fluvially dominated channels which govern deposition on the delta plain are narrower and slightly less deep, straighter, generally ... Article in Journal/Newspaper Edgeøya Svalbard Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Edgeøya ENVELOPE(22.500,22.500,77.750,77.750) Svalbard Basin Research 33 1 478 512 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
topic |
VDP::Geofag: 450 |
spellingShingle |
VDP::Geofag: 450 Anell, Ingrid Margareta Zuchuat, Valentin Röhnert, A.D. Smyrak-Sikora, Aleksandra Buckley, Simon John Lord, Gareth Steven Maher, H. Midtkandal, Ivar Ogata, Kei Olaussen, Snorre Osmundsen, Per Terje Braathen, Alvar Tidal amplification and along‐strike process variability in a mixed‐energy paralic system prograding onto a low accommodation shelf, Edgeøya, Svalbard |
topic_facet |
VDP::Geofag: 450 |
description |
The study describes the depositional development and sediment partitioning in a prograding paralic Triassic succession. The deposits are associated with the advance of large prism‐scale clinoforms across a shallower platform area. Approaching the platform, the limited accommodation and associated relative higher rates of deposition generated straighter clinoforms with lower foreset angles. The vertical restriction across the platform is interpreted to have amplified the tidal signature. Sediment was redistributed from the coast into increasingly sandy delta‐front deposits, compared to offshore equivalents. The deposits comprise extensive compound dune fields of amalgamated and increasingly clean sandbodies up‐section. Rapid deposition of significant amounts of sand led to differential subsidence and growth‐faulting in the delta front, with downthrown fault blocks further amplifying the tidal energy through funnelling. A mixed‐energy environment created along‐strike variability along the delta front with sedimentation governing process‐regime. Areas of lower sedimentation were reworked by wave and storm‐action, whereas high sedimentation rates preserved fluvially dominated mouth bars. A major transgression, however, favoured tidally dominated deposits also in these areas, attributed to increasing rugosity of the coastline. Formation of an extensive subaqueous platform between the coast and delta front dampened incoming wave energy, and tidally dominated deposits dominate the near‐shore successions. Meanwhile formation of wave‐built sand‐bars atop the platform attest to continued wave influence. The strong tidal regime led to the development of a heterolithic near‐shore tidally dominated channel system, and sandier fluvial channels up‐river. The highly meandering tidal channels incising the subaqueous platform form kilometre wide successions of inclined heterolithic stratification. The fluvially dominated channels which govern deposition on the delta plain are narrower and slightly less deep, straighter, generally ... |
format |
Article in Journal/Newspaper |
author |
Anell, Ingrid Margareta Zuchuat, Valentin Röhnert, A.D. Smyrak-Sikora, Aleksandra Buckley, Simon John Lord, Gareth Steven Maher, H. Midtkandal, Ivar Ogata, Kei Olaussen, Snorre Osmundsen, Per Terje Braathen, Alvar |
author_facet |
Anell, Ingrid Margareta Zuchuat, Valentin Röhnert, A.D. Smyrak-Sikora, Aleksandra Buckley, Simon John Lord, Gareth Steven Maher, H. Midtkandal, Ivar Ogata, Kei Olaussen, Snorre Osmundsen, Per Terje Braathen, Alvar |
author_sort |
Anell, Ingrid Margareta |
title |
Tidal amplification and along‐strike process variability in a mixed‐energy paralic system prograding onto a low accommodation shelf, Edgeøya, Svalbard |
title_short |
Tidal amplification and along‐strike process variability in a mixed‐energy paralic system prograding onto a low accommodation shelf, Edgeøya, Svalbard |
title_full |
Tidal amplification and along‐strike process variability in a mixed‐energy paralic system prograding onto a low accommodation shelf, Edgeøya, Svalbard |
title_fullStr |
Tidal amplification and along‐strike process variability in a mixed‐energy paralic system prograding onto a low accommodation shelf, Edgeøya, Svalbard |
title_full_unstemmed |
Tidal amplification and along‐strike process variability in a mixed‐energy paralic system prograding onto a low accommodation shelf, Edgeøya, Svalbard |
title_sort |
tidal amplification and along‐strike process variability in a mixed‐energy paralic system prograding onto a low accommodation shelf, edgeøya, svalbard |
publishDate |
2020 |
url |
http://hdl.handle.net/10852/81079 http://urn.nb.no/URN:NBN:no-84164 https://doi.org/10.1111/bre.12482 |
long_lat |
ENVELOPE(22.500,22.500,77.750,77.750) |
geographic |
Edgeøya Svalbard |
geographic_facet |
Edgeøya Svalbard |
genre |
Edgeøya Svalbard |
genre_facet |
Edgeøya Svalbard |
op_source |
0950-091X |
op_relation |
http://urn.nb.no/URN:NBN:no-84164 Anell, Ingrid Margareta Zuchuat, Valentin Röhnert, A.D. Smyrak-Sikora, Aleksandra Buckley, Simon John Lord, Gareth Steven Maher, H. Midtkandal, Ivar Ogata, Kei Olaussen, Snorre Osmundsen, Per Terje Braathen, Alvar . Tidal amplification and along‐strike process variability in a mixed‐energy paralic system prograding onto a low accommodation shelf, Edgeøya, Svalbard. Basin Research. 2020 http://hdl.handle.net/10852/81079 1815140 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Basin Research&rft.volume=&rft.spage=&rft.date=2020 Basin Research 35 https://doi.org/10.1111/bre.12482 URN:NBN:no-84164 Fulltext https://www.duo.uio.no/bitstream/handle/10852/81079/1/bre.12482%2B%25281%2529.pdf |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/bre.12482 |
container_title |
Basin Research |
container_volume |
33 |
container_issue |
1 |
container_start_page |
478 |
op_container_end_page |
512 |
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1811637975416569856 |