Time-transgressive tunnel-valley infill revealed by a three- dimensional sedimentary model, Hamburg, north-west Germany
Deep, elongated incisions, often referred to as tunnel valleys, are among the most characteristic landforms of formerly glaciated terrains. It is commonly thought that tunnel valleys were formed by meltwater flowing underneath large ice sheets. The sedimentary infill of these features is often highl...
Published in: | Sedimentology |
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Online Access: | https://curis.ku.dk/portal/da/publications/timetransgressive-tunnelvalley-infill-revealed-by-a-three-dimensional-sedimentary-model-hamburg-northwest-germany(f6a76c47-0392-4d83-8c1b-dff46f73982a).html https://doi.org/10.1111/j.1365-3091.2012.01357.x |
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ftcopenhagenunip:oai:pure.atira.dk:publications/f6a76c47-0392-4d83-8c1b-dff46f73982a 2024-04-14T08:13:14+00:00 Time-transgressive tunnel-valley infill revealed by a three- dimensional sedimentary model, Hamburg, north-west Germany Janszen, Adriaan Moreau, Julien Moscariello, Andrea Ehlers, Jürgen Kröger, Jens 2013 https://curis.ku.dk/portal/da/publications/timetransgressive-tunnelvalley-infill-revealed-by-a-three-dimensional-sedimentary-model-hamburg-northwest-germany(f6a76c47-0392-4d83-8c1b-dff46f73982a).html https://doi.org/10.1111/j.1365-3091.2012.01357.x eng eng info:eu-repo/semantics/restrictedAccess Janszen , A , Moreau , J , Moscariello , A , Ehlers , J & Kröger , J 2013 , ' Time-transgressive tunnel-valley infill revealed by a three- dimensional sedimentary model, Hamburg, north-west Germany ' , Sedimentology , vol. 60 , no. 3 , pp. 693-719 . https://doi.org/10.1111/j.1365-3091.2012.01357.x article 2013 ftcopenhagenunip https://doi.org/10.1111/j.1365-3091.2012.01357.x 2024-03-21T17:28:07Z Deep, elongated incisions, often referred to as tunnel valleys, are among the most characteristic landforms of formerly glaciated terrains. It is commonly thought that tunnel valleys were formed by meltwater flowing underneath large ice sheets. The sedimentary infill of these features is often highly intricate and therefore difficult to predict. This study intends to improve the comprehension of the sedimentology and to establish a conceptual model of tunnel-valley infill, which can be used as a predictive tool. To this end, the densely sampled, Pleistocene tunnel valleys in Hamburg (north-west Germany) were investigated using a dataset of 1057 deep wells containing lithological and geophysical data. The stratigraphic correlations and the resulting three-dimensional lithological model were used to assess the spatial lithological distributions and sedimentary architecture. The sedimentary succession filling the Hamburg area tunnel valleys can be subdivided into three distinct units, which are distinguished by their inferred depositional proximity to the ice margin. The overall trend of the succession shows a progressive decrease in transport energy and glacial influence through time. The rate of glacial recession appears to have been an important control on the sedimentary architecture of the tunnel-valley fill. During periods of stagnation, thick ice-proximal deposits accumulated at the ice margin, while during rapid recession, only a thin veneer of such coarse-grained sediments was deposited. Ice-distal and non-glaciogenic deposits (i.e. lacustrine, marine and terrestrial) fill the remaining part of the incision. The infill architecture suggests formation and subsequent infill of the tunnel valleys at the outer margin of the Elsterian ice sheet during its punctuated northwards recession. The proposed model shows how the history of ice-sheet recession determines the position of coarse-grained depocentres, while the post-glacial history controls the deposition of fines through a progressive infill of remnant ... Article in Journal/Newspaper Ice Sheet University of Copenhagen: Research Sedimentology 60 3 693 719 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
Deep, elongated incisions, often referred to as tunnel valleys, are among the most characteristic landforms of formerly glaciated terrains. It is commonly thought that tunnel valleys were formed by meltwater flowing underneath large ice sheets. The sedimentary infill of these features is often highly intricate and therefore difficult to predict. This study intends to improve the comprehension of the sedimentology and to establish a conceptual model of tunnel-valley infill, which can be used as a predictive tool. To this end, the densely sampled, Pleistocene tunnel valleys in Hamburg (north-west Germany) were investigated using a dataset of 1057 deep wells containing lithological and geophysical data. The stratigraphic correlations and the resulting three-dimensional lithological model were used to assess the spatial lithological distributions and sedimentary architecture. The sedimentary succession filling the Hamburg area tunnel valleys can be subdivided into three distinct units, which are distinguished by their inferred depositional proximity to the ice margin. The overall trend of the succession shows a progressive decrease in transport energy and glacial influence through time. The rate of glacial recession appears to have been an important control on the sedimentary architecture of the tunnel-valley fill. During periods of stagnation, thick ice-proximal deposits accumulated at the ice margin, while during rapid recession, only a thin veneer of such coarse-grained sediments was deposited. Ice-distal and non-glaciogenic deposits (i.e. lacustrine, marine and terrestrial) fill the remaining part of the incision. The infill architecture suggests formation and subsequent infill of the tunnel valleys at the outer margin of the Elsterian ice sheet during its punctuated northwards recession. The proposed model shows how the history of ice-sheet recession determines the position of coarse-grained depocentres, while the post-glacial history controls the deposition of fines through a progressive infill of remnant ... |
format |
Article in Journal/Newspaper |
author |
Janszen, Adriaan Moreau, Julien Moscariello, Andrea Ehlers, Jürgen Kröger, Jens |
spellingShingle |
Janszen, Adriaan Moreau, Julien Moscariello, Andrea Ehlers, Jürgen Kröger, Jens Time-transgressive tunnel-valley infill revealed by a three- dimensional sedimentary model, Hamburg, north-west Germany |
author_facet |
Janszen, Adriaan Moreau, Julien Moscariello, Andrea Ehlers, Jürgen Kröger, Jens |
author_sort |
Janszen, Adriaan |
title |
Time-transgressive tunnel-valley infill revealed by a three- dimensional sedimentary model, Hamburg, north-west Germany |
title_short |
Time-transgressive tunnel-valley infill revealed by a three- dimensional sedimentary model, Hamburg, north-west Germany |
title_full |
Time-transgressive tunnel-valley infill revealed by a three- dimensional sedimentary model, Hamburg, north-west Germany |
title_fullStr |
Time-transgressive tunnel-valley infill revealed by a three- dimensional sedimentary model, Hamburg, north-west Germany |
title_full_unstemmed |
Time-transgressive tunnel-valley infill revealed by a three- dimensional sedimentary model, Hamburg, north-west Germany |
title_sort |
time-transgressive tunnel-valley infill revealed by a three- dimensional sedimentary model, hamburg, north-west germany |
publishDate |
2013 |
url |
https://curis.ku.dk/portal/da/publications/timetransgressive-tunnelvalley-infill-revealed-by-a-three-dimensional-sedimentary-model-hamburg-northwest-germany(f6a76c47-0392-4d83-8c1b-dff46f73982a).html https://doi.org/10.1111/j.1365-3091.2012.01357.x |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Janszen , A , Moreau , J , Moscariello , A , Ehlers , J & Kröger , J 2013 , ' Time-transgressive tunnel-valley infill revealed by a three- dimensional sedimentary model, Hamburg, north-west Germany ' , Sedimentology , vol. 60 , no. 3 , pp. 693-719 . https://doi.org/10.1111/j.1365-3091.2012.01357.x |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/j.1365-3091.2012.01357.x |
container_title |
Sedimentology |
container_volume |
60 |
container_issue |
3 |
container_start_page |
693 |
op_container_end_page |
719 |
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