Architecture of growth basins in a tidally influenced, prodelta to delta-front setting: The Triassic succession of Kvalpynten, East Svalbard
World‐class examples of fault‐controlled growth basins with associated syn‐kinematic sedimentary fill are developed in Upper Triassic prodelta to delta‐front deposits exposed at Kvalpynten, SW Edgeøya in East Svalbard. They are interpreted to have interacted with north‐westerly progradation of a reg...
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Language: | English |
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Online Access: | https://hdl.handle.net/1956/21494 https://doi.org/10.1111/bre.12410 |
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ftunivbergen:oai:bora.uib.no:1956/21494 2023-05-15T16:04:03+02:00 Architecture of growth basins in a tidally influenced, prodelta to delta-front setting: The Triassic succession of Kvalpynten, East Svalbard Smyrak-Sikora, Aleksandra Osmundsen, Per Terje Braathen, Alvar Ogata, Kei Anell, Ingrid Margareta Mulrooney, Mark Joseph Zuchuat, Valentin 2020-02-12T12:05:16Z application/pdf https://hdl.handle.net/1956/21494 https://doi.org/10.1111/bre.12410 eng eng Wiley Norges forskningsråd: 234152 urn:issn:1365-2117 urn:issn:0950-091X https://hdl.handle.net/1956/21494 https://doi.org/10.1111/bre.12410 cristin:1762812 Basin Research. 2020, 32 (5), 949-978. Attribution CC BY http://creativecommons.org/licenses/by/4.0/ Copyright 2019 The Authors Basin Research Peer reviewed Journal article 2020 ftunivbergen https://doi.org/10.1111/bre.12410 2023-03-14T17:44:47Z World‐class examples of fault‐controlled growth basins with associated syn‐kinematic sedimentary fill are developed in Upper Triassic prodelta to delta‐front deposits exposed at Kvalpynten, SW Edgeøya in East Svalbard. They are interpreted to have interacted with north‐westerly progradation of a regional delta system. The syn‐kinematic successions consist of 4 to 5 coarsening‐upward units spanning from offshore mudstones to subtidal heterolithic bars and compound tidal dunes, which were blanketed by regional, post‐kinematic sandstone sheets deposited as laterally continuous, subaqueous tidal dune fields. The rate of growth faulting is reflected in the distribution of accommodation, which governs sedimentary architecture and stacking patterns within the coarsening‐upward units. Fully compartmentalized basins (12, 200–800 m wide and c. 150 m high grabens and half grabens) are characterized by syn‐kinematic sedimentary infill. These grabens and half‐grabens are separated by 60–150 m high horsts composed of pro‐delta to distal delta‐front mudstones. Grabens host tabular tidal dunes (sandwaves), whereas half‐grabens bound by listric faults (mainly south‐dipping) consist of wedge‐shaped, rotated strata with erosive boundaries proximal to the uplifted fault block crests. Heterolithic tidal bars (sand ridges) occur in narrow half‐grabens, showing migration oblique to the faults, up the dipslope. Structureless sandstone wedges and localized subaqueous slumps that formed in response to collapse of the block crests were only documented in half‐grabens. Late‐kinematic deposition during the final stages of faulting occurred in partly compartmentalized basins, filled with variably thick sets of continuous sandstone belts (compound tidal dunes). publishedVersion Article in Journal/Newspaper Edgeøya Svalbard University of Bergen: Bergen Open Research Archive (BORA-UiB) Edgeøya ENVELOPE(22.500,22.500,77.750,77.750) Kvalpynten ENVELOPE(20.897,20.897,77.440,77.440) Svalbard Basin Research 32 5 949 978 |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
description |
World‐class examples of fault‐controlled growth basins with associated syn‐kinematic sedimentary fill are developed in Upper Triassic prodelta to delta‐front deposits exposed at Kvalpynten, SW Edgeøya in East Svalbard. They are interpreted to have interacted with north‐westerly progradation of a regional delta system. The syn‐kinematic successions consist of 4 to 5 coarsening‐upward units spanning from offshore mudstones to subtidal heterolithic bars and compound tidal dunes, which were blanketed by regional, post‐kinematic sandstone sheets deposited as laterally continuous, subaqueous tidal dune fields. The rate of growth faulting is reflected in the distribution of accommodation, which governs sedimentary architecture and stacking patterns within the coarsening‐upward units. Fully compartmentalized basins (12, 200–800 m wide and c. 150 m high grabens and half grabens) are characterized by syn‐kinematic sedimentary infill. These grabens and half‐grabens are separated by 60–150 m high horsts composed of pro‐delta to distal delta‐front mudstones. Grabens host tabular tidal dunes (sandwaves), whereas half‐grabens bound by listric faults (mainly south‐dipping) consist of wedge‐shaped, rotated strata with erosive boundaries proximal to the uplifted fault block crests. Heterolithic tidal bars (sand ridges) occur in narrow half‐grabens, showing migration oblique to the faults, up the dipslope. Structureless sandstone wedges and localized subaqueous slumps that formed in response to collapse of the block crests were only documented in half‐grabens. Late‐kinematic deposition during the final stages of faulting occurred in partly compartmentalized basins, filled with variably thick sets of continuous sandstone belts (compound tidal dunes). publishedVersion |
format |
Article in Journal/Newspaper |
author |
Smyrak-Sikora, Aleksandra Osmundsen, Per Terje Braathen, Alvar Ogata, Kei Anell, Ingrid Margareta Mulrooney, Mark Joseph Zuchuat, Valentin |
spellingShingle |
Smyrak-Sikora, Aleksandra Osmundsen, Per Terje Braathen, Alvar Ogata, Kei Anell, Ingrid Margareta Mulrooney, Mark Joseph Zuchuat, Valentin Architecture of growth basins in a tidally influenced, prodelta to delta-front setting: The Triassic succession of Kvalpynten, East Svalbard |
author_facet |
Smyrak-Sikora, Aleksandra Osmundsen, Per Terje Braathen, Alvar Ogata, Kei Anell, Ingrid Margareta Mulrooney, Mark Joseph Zuchuat, Valentin |
author_sort |
Smyrak-Sikora, Aleksandra |
title |
Architecture of growth basins in a tidally influenced, prodelta to delta-front setting: The Triassic succession of Kvalpynten, East Svalbard |
title_short |
Architecture of growth basins in a tidally influenced, prodelta to delta-front setting: The Triassic succession of Kvalpynten, East Svalbard |
title_full |
Architecture of growth basins in a tidally influenced, prodelta to delta-front setting: The Triassic succession of Kvalpynten, East Svalbard |
title_fullStr |
Architecture of growth basins in a tidally influenced, prodelta to delta-front setting: The Triassic succession of Kvalpynten, East Svalbard |
title_full_unstemmed |
Architecture of growth basins in a tidally influenced, prodelta to delta-front setting: The Triassic succession of Kvalpynten, East Svalbard |
title_sort |
architecture of growth basins in a tidally influenced, prodelta to delta-front setting: the triassic succession of kvalpynten, east svalbard |
publisher |
Wiley |
publishDate |
2020 |
url |
https://hdl.handle.net/1956/21494 https://doi.org/10.1111/bre.12410 |
long_lat |
ENVELOPE(22.500,22.500,77.750,77.750) ENVELOPE(20.897,20.897,77.440,77.440) |
geographic |
Edgeøya Kvalpynten Svalbard |
geographic_facet |
Edgeøya Kvalpynten Svalbard |
genre |
Edgeøya Svalbard |
genre_facet |
Edgeøya Svalbard |
op_source |
Basin Research |
op_relation |
Norges forskningsråd: 234152 urn:issn:1365-2117 urn:issn:0950-091X https://hdl.handle.net/1956/21494 https://doi.org/10.1111/bre.12410 cristin:1762812 Basin Research. 2020, 32 (5), 949-978. |
op_rights |
Attribution CC BY http://creativecommons.org/licenses/by/4.0/ Copyright 2019 The Authors |
op_doi |
https://doi.org/10.1111/bre.12410 |
container_title |
Basin Research |
container_volume |
32 |
container_issue |
5 |
container_start_page |
949 |
op_container_end_page |
978 |
_version_ |
1766399753296281600 |