Hybrid event beds dominated by transitional-flow facies: character, distribution and significance in the Maastrichtian Springar Formation, north-west Vøring Basin, Norwegian Sea
Hybrid event beds comprising clay-poor and clay-rich sandstone are abundant in Maastrichtian-aged sandstones of the Springar Formation in the north-west Vøring Basin, Norwegian Sea. This study focuses on an interval, informally referred to as the Lower Sandstone, which has been penetrated in five we...
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Online Access: | https://eprints.whiterose.ac.uk/104678/ https://eprints.whiterose.ac.uk/104678/8/Southern_et_al-2017-Sedimentology.pdf https://doi.org/10.1111/sed.12323 |
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ftleedsuniv:oai:eprints.whiterose.ac.uk:104678 2023-05-15T17:47:04+02:00 Hybrid event beds dominated by transitional-flow facies: character, distribution and significance in the Maastrichtian Springar Formation, north-west Vøring Basin, Norwegian Sea Southern, SJ Kane, IA Warchol, MJ Porten, KW McCaffrey, WD 2017-04 text https://eprints.whiterose.ac.uk/104678/ https://eprints.whiterose.ac.uk/104678/8/Southern_et_al-2017-Sedimentology.pdf https://doi.org/10.1111/sed.12323 en eng Wiley https://eprints.whiterose.ac.uk/104678/8/Southern_et_al-2017-Sedimentology.pdf Southern, SJ, Kane, IA, Warchol, MJ et al. (2 more authors) (2017) Hybrid event beds dominated by transitional-flow facies: character, distribution and significance in the Maastrichtian Springar Formation, north-west Vøring Basin, Norwegian Sea. Sedimentology, 64 (3). pp. 747-776. ISSN 0037-0746 Article NonPeerReviewed 2017 ftleedsuniv https://doi.org/10.1111/sed.12323 2023-01-30T21:46:07Z Hybrid event beds comprising clay-poor and clay-rich sandstone are abundant in Maastrichtian-aged sandstones of the Springar Formation in the north-west Vøring Basin, Norwegian Sea. This study focuses on an interval, informally referred to as the Lower Sandstone, which has been penetrated in five wells that are distributed along a 140 km downstream transect. Systematic variations in bed style within this stratigraphic interval are used to infer variation in flow behaviour in relatively proximal and distal settings, although individual beds were not correlated. The Lower Sandstone shows an overall reduction in total thickness, bed amalgamation, sand to mud ratio and grain size in distal wells. Turbidites dominated by clay-poor sandstone are at their most common in relatively proximal wells, whereas hybrid event beds are at their most common in distal wells. Hybrid event beds typically comprise a basal clay-poor sandstone (non-stratified or stratified) overlain by banded sandstone, with clay-rich non-stratified sandstone at the bed top. The dominant type of clay-poor sandstone at the base of these beds varies spatially; non-stratified sandstone is thickest and most common proximally, whereas stratified sandstone becomes dominant in distal wells. Stratified and banded sandstone record progressive deposition of the hybrid event bed. Thus, the facies succession within hybrid event beds records the longitudinal heterogeneity of flow behaviour within the depositional boundary layer; this layer changed from non-cohesive at the front, through a region of transitional behaviour (fluctuating non-cohesive and cohesive flow), to cohesive behaviour at the rear. Spatial variation in the dominant type of clay-poor sandstone at the bed base suggests that the front of the flow remained non-cohesive, and evolved from high-concentration and turbulence-suppressed to increasingly turbulent flow; this is thought to occur in response to deposition and declining sediment fallout. This research may be applicable to other hybrid event bed ... Article in Journal/Newspaper Norwegian Sea White Rose Research Online (Universities of Leeds, Sheffield & York) Norwegian Sea Sedimentology 64 3 747 776 |
institution |
Open Polar |
collection |
White Rose Research Online (Universities of Leeds, Sheffield & York) |
op_collection_id |
ftleedsuniv |
language |
English |
description |
Hybrid event beds comprising clay-poor and clay-rich sandstone are abundant in Maastrichtian-aged sandstones of the Springar Formation in the north-west Vøring Basin, Norwegian Sea. This study focuses on an interval, informally referred to as the Lower Sandstone, which has been penetrated in five wells that are distributed along a 140 km downstream transect. Systematic variations in bed style within this stratigraphic interval are used to infer variation in flow behaviour in relatively proximal and distal settings, although individual beds were not correlated. The Lower Sandstone shows an overall reduction in total thickness, bed amalgamation, sand to mud ratio and grain size in distal wells. Turbidites dominated by clay-poor sandstone are at their most common in relatively proximal wells, whereas hybrid event beds are at their most common in distal wells. Hybrid event beds typically comprise a basal clay-poor sandstone (non-stratified or stratified) overlain by banded sandstone, with clay-rich non-stratified sandstone at the bed top. The dominant type of clay-poor sandstone at the base of these beds varies spatially; non-stratified sandstone is thickest and most common proximally, whereas stratified sandstone becomes dominant in distal wells. Stratified and banded sandstone record progressive deposition of the hybrid event bed. Thus, the facies succession within hybrid event beds records the longitudinal heterogeneity of flow behaviour within the depositional boundary layer; this layer changed from non-cohesive at the front, through a region of transitional behaviour (fluctuating non-cohesive and cohesive flow), to cohesive behaviour at the rear. Spatial variation in the dominant type of clay-poor sandstone at the bed base suggests that the front of the flow remained non-cohesive, and evolved from high-concentration and turbulence-suppressed to increasingly turbulent flow; this is thought to occur in response to deposition and declining sediment fallout. This research may be applicable to other hybrid event bed ... |
format |
Article in Journal/Newspaper |
author |
Southern, SJ Kane, IA Warchol, MJ Porten, KW McCaffrey, WD |
spellingShingle |
Southern, SJ Kane, IA Warchol, MJ Porten, KW McCaffrey, WD Hybrid event beds dominated by transitional-flow facies: character, distribution and significance in the Maastrichtian Springar Formation, north-west Vøring Basin, Norwegian Sea |
author_facet |
Southern, SJ Kane, IA Warchol, MJ Porten, KW McCaffrey, WD |
author_sort |
Southern, SJ |
title |
Hybrid event beds dominated by transitional-flow facies: character, distribution and significance in the Maastrichtian Springar Formation, north-west Vøring Basin, Norwegian Sea |
title_short |
Hybrid event beds dominated by transitional-flow facies: character, distribution and significance in the Maastrichtian Springar Formation, north-west Vøring Basin, Norwegian Sea |
title_full |
Hybrid event beds dominated by transitional-flow facies: character, distribution and significance in the Maastrichtian Springar Formation, north-west Vøring Basin, Norwegian Sea |
title_fullStr |
Hybrid event beds dominated by transitional-flow facies: character, distribution and significance in the Maastrichtian Springar Formation, north-west Vøring Basin, Norwegian Sea |
title_full_unstemmed |
Hybrid event beds dominated by transitional-flow facies: character, distribution and significance in the Maastrichtian Springar Formation, north-west Vøring Basin, Norwegian Sea |
title_sort |
hybrid event beds dominated by transitional-flow facies: character, distribution and significance in the maastrichtian springar formation, north-west vøring basin, norwegian sea |
publisher |
Wiley |
publishDate |
2017 |
url |
https://eprints.whiterose.ac.uk/104678/ https://eprints.whiterose.ac.uk/104678/8/Southern_et_al-2017-Sedimentology.pdf https://doi.org/10.1111/sed.12323 |
geographic |
Norwegian Sea |
geographic_facet |
Norwegian Sea |
genre |
Norwegian Sea |
genre_facet |
Norwegian Sea |
op_relation |
https://eprints.whiterose.ac.uk/104678/8/Southern_et_al-2017-Sedimentology.pdf Southern, SJ, Kane, IA, Warchol, MJ et al. (2 more authors) (2017) Hybrid event beds dominated by transitional-flow facies: character, distribution and significance in the Maastrichtian Springar Formation, north-west Vøring Basin, Norwegian Sea. Sedimentology, 64 (3). pp. 747-776. ISSN 0037-0746 |
op_doi |
https://doi.org/10.1111/sed.12323 |
container_title |
Sedimentology |
container_volume |
64 |
container_issue |
3 |
container_start_page |
747 |
op_container_end_page |
776 |
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1766151349797388288 |