Seismic geomorphology and evolution of the Melville Bugt trough mouth fan, northwest Greenland
Trough mouth fans on glaciated margins are a common sedimentary feature that contain a record of ice sheet advance and retreat across the continental shelf. This study uses 2D and 3D seismic reflection data across the Melville Bugt Trough Mouth Fan (MB-TMF), offshore northwest Greenland, to document...
Published in: | Quaternary Science Reviews |
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2021
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Online Access: | https://pure.qub.ac.uk/en/publications/seismic-geomorphology-and-evolution-of-the-melville-bugt-trough-mouth-fan-northwest-greenland(ade9ccde-8425-43b4-a639-2436773aa79f).html https://doi.org/10.1016/j.quascirev.2021.106798 |
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ftqueensubelpubl:oai:pure.qub.ac.uk/portal:publications/ade9ccde-8425-43b4-a639-2436773aa79f 2023-05-15T15:35:08+02:00 Seismic geomorphology and evolution of the Melville Bugt trough mouth fan, northwest Greenland Newton, Andrew M.W. Huuse, Mads Cox, David R. Knutz, Paul C. 2021-03-01 https://pure.qub.ac.uk/en/publications/seismic-geomorphology-and-evolution-of-the-melville-bugt-trough-mouth-fan-northwest-greenland(ade9ccde-8425-43b4-a639-2436773aa79f).html https://doi.org/10.1016/j.quascirev.2021.106798 eng eng info:eu-repo/semantics/closedAccess Newton , A M W , Huuse , M , Cox , D R & Knutz , P C 2021 , ' Seismic geomorphology and evolution of the Melville Bugt trough mouth fan, northwest Greenland ' , Quaternary Science Reviews , vol. 255 , 106798 . https://doi.org/10.1016/j.quascirev.2021.106798 Baffin bay Glacial stratigraphy Greenland Ice sheet Ice streams Melville bugt Seismic geomorphology Seismic reflection data Trough mouth fan /dk/atira/pure/subjectarea/asjc/2300/2306 Global and Planetary Change /dk/atira/pure/subjectarea/asjc/1100/1105 Ecology Evolution Behavior and Systematics /dk/atira/pure/subjectarea/asjc/1200/1204 Archaeology /dk/atira/pure/subjectarea/asjc/3300/3302 /dk/atira/pure/subjectarea/asjc/1900/1907 Geology /dk/atira/pure/sustainabledevelopmentgoals/life_below_water SDG 14 - Life Below Water article 2021 ftqueensubelpubl https://doi.org/10.1016/j.quascirev.2021.106798 2022-02-09T22:37:10Z Trough mouth fans on glaciated margins are a common sedimentary feature that contain a record of ice sheet advance and retreat across the continental shelf. This study uses 2D and 3D seismic reflection data across the Melville Bugt Trough Mouth Fan (MB-TMF), offshore northwest Greenland, to document its stratigraphic architecture, glacigenic landforms, and marine deposits. The MB-TMF stratigraphy is characterised by rapid progradation of the continental shelf (over 100 km since ∼2.7 Ma) and heterogeneous truncation or subsidence of topset strata. The variable topset character relates to the repeated growth and retreat of the Greenland Ice Sheet across the shelf since ∼2.7 Ma. Seismic geomorphology and facies analysis of the prograding clinoforms show repeated sequences of debris flow deposits and gullies that are taken to infer gravity-driven processes and the presence of meltwater-related hyperpycnal flows in areas proximal to the ice sheet on the outer shelf. Several sets of mega-scale glacial lineations confirm the presence and flow pathways of successive ice streams since ∼1.3 Ma. Evolution of the MB-TMF can be summarised into four stages that were controlled by variations in ice sheet erosion, topographic forcing of ice stream flow, and changes in accommodation related to glacigenic deposition and tectonic subsidence. These results show that during the Middle Pleistocene Transition there is an apparent switch from a meltwater-dominated depositional regime, to one with greater emplacement of materials by ice directly at the palaeo-shelf edge. These results provide significant new detail about the large-scale glacigenic and marine depositional processes during the repeated fluctuations of the northwest Greenland Ice Sheet into Melville Bugt since ∼2.7 Ma. Article in Journal/Newspaper Baffin Bay Baffin Bay Baffin Greenland Ice Sheet Melville bugt Queen's University Belfast Research Portal Baffin Bay Greenland Melville Bugt ENVELOPE(-61.000,-61.000,75.750,75.750) Quaternary Science Reviews 255 106798 |
institution |
Open Polar |
collection |
Queen's University Belfast Research Portal |
op_collection_id |
ftqueensubelpubl |
language |
English |
topic |
Baffin bay Glacial stratigraphy Greenland Ice sheet Ice streams Melville bugt Seismic geomorphology Seismic reflection data Trough mouth fan /dk/atira/pure/subjectarea/asjc/2300/2306 Global and Planetary Change /dk/atira/pure/subjectarea/asjc/1100/1105 Ecology Evolution Behavior and Systematics /dk/atira/pure/subjectarea/asjc/1200/1204 Archaeology /dk/atira/pure/subjectarea/asjc/3300/3302 /dk/atira/pure/subjectarea/asjc/1900/1907 Geology /dk/atira/pure/sustainabledevelopmentgoals/life_below_water SDG 14 - Life Below Water |
spellingShingle |
Baffin bay Glacial stratigraphy Greenland Ice sheet Ice streams Melville bugt Seismic geomorphology Seismic reflection data Trough mouth fan /dk/atira/pure/subjectarea/asjc/2300/2306 Global and Planetary Change /dk/atira/pure/subjectarea/asjc/1100/1105 Ecology Evolution Behavior and Systematics /dk/atira/pure/subjectarea/asjc/1200/1204 Archaeology /dk/atira/pure/subjectarea/asjc/3300/3302 /dk/atira/pure/subjectarea/asjc/1900/1907 Geology /dk/atira/pure/sustainabledevelopmentgoals/life_below_water SDG 14 - Life Below Water Newton, Andrew M.W. Huuse, Mads Cox, David R. Knutz, Paul C. Seismic geomorphology and evolution of the Melville Bugt trough mouth fan, northwest Greenland |
topic_facet |
Baffin bay Glacial stratigraphy Greenland Ice sheet Ice streams Melville bugt Seismic geomorphology Seismic reflection data Trough mouth fan /dk/atira/pure/subjectarea/asjc/2300/2306 Global and Planetary Change /dk/atira/pure/subjectarea/asjc/1100/1105 Ecology Evolution Behavior and Systematics /dk/atira/pure/subjectarea/asjc/1200/1204 Archaeology /dk/atira/pure/subjectarea/asjc/3300/3302 /dk/atira/pure/subjectarea/asjc/1900/1907 Geology /dk/atira/pure/sustainabledevelopmentgoals/life_below_water SDG 14 - Life Below Water |
description |
Trough mouth fans on glaciated margins are a common sedimentary feature that contain a record of ice sheet advance and retreat across the continental shelf. This study uses 2D and 3D seismic reflection data across the Melville Bugt Trough Mouth Fan (MB-TMF), offshore northwest Greenland, to document its stratigraphic architecture, glacigenic landforms, and marine deposits. The MB-TMF stratigraphy is characterised by rapid progradation of the continental shelf (over 100 km since ∼2.7 Ma) and heterogeneous truncation or subsidence of topset strata. The variable topset character relates to the repeated growth and retreat of the Greenland Ice Sheet across the shelf since ∼2.7 Ma. Seismic geomorphology and facies analysis of the prograding clinoforms show repeated sequences of debris flow deposits and gullies that are taken to infer gravity-driven processes and the presence of meltwater-related hyperpycnal flows in areas proximal to the ice sheet on the outer shelf. Several sets of mega-scale glacial lineations confirm the presence and flow pathways of successive ice streams since ∼1.3 Ma. Evolution of the MB-TMF can be summarised into four stages that were controlled by variations in ice sheet erosion, topographic forcing of ice stream flow, and changes in accommodation related to glacigenic deposition and tectonic subsidence. These results show that during the Middle Pleistocene Transition there is an apparent switch from a meltwater-dominated depositional regime, to one with greater emplacement of materials by ice directly at the palaeo-shelf edge. These results provide significant new detail about the large-scale glacigenic and marine depositional processes during the repeated fluctuations of the northwest Greenland Ice Sheet into Melville Bugt since ∼2.7 Ma. |
format |
Article in Journal/Newspaper |
author |
Newton, Andrew M.W. Huuse, Mads Cox, David R. Knutz, Paul C. |
author_facet |
Newton, Andrew M.W. Huuse, Mads Cox, David R. Knutz, Paul C. |
author_sort |
Newton, Andrew M.W. |
title |
Seismic geomorphology and evolution of the Melville Bugt trough mouth fan, northwest Greenland |
title_short |
Seismic geomorphology and evolution of the Melville Bugt trough mouth fan, northwest Greenland |
title_full |
Seismic geomorphology and evolution of the Melville Bugt trough mouth fan, northwest Greenland |
title_fullStr |
Seismic geomorphology and evolution of the Melville Bugt trough mouth fan, northwest Greenland |
title_full_unstemmed |
Seismic geomorphology and evolution of the Melville Bugt trough mouth fan, northwest Greenland |
title_sort |
seismic geomorphology and evolution of the melville bugt trough mouth fan, northwest greenland |
publishDate |
2021 |
url |
https://pure.qub.ac.uk/en/publications/seismic-geomorphology-and-evolution-of-the-melville-bugt-trough-mouth-fan-northwest-greenland(ade9ccde-8425-43b4-a639-2436773aa79f).html https://doi.org/10.1016/j.quascirev.2021.106798 |
long_lat |
ENVELOPE(-61.000,-61.000,75.750,75.750) |
geographic |
Baffin Bay Greenland Melville Bugt |
geographic_facet |
Baffin Bay Greenland Melville Bugt |
genre |
Baffin Bay Baffin Bay Baffin Greenland Ice Sheet Melville bugt |
genre_facet |
Baffin Bay Baffin Bay Baffin Greenland Ice Sheet Melville bugt |
op_source |
Newton , A M W , Huuse , M , Cox , D R & Knutz , P C 2021 , ' Seismic geomorphology and evolution of the Melville Bugt trough mouth fan, northwest Greenland ' , Quaternary Science Reviews , vol. 255 , 106798 . https://doi.org/10.1016/j.quascirev.2021.106798 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2021.106798 |
container_title |
Quaternary Science Reviews |
container_volume |
255 |
container_start_page |
106798 |
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1766365423539847168 |