Glaciotectonic Structures in Central Sweden and their Significance for Glacial Theory
Glacialtektoniska strukturer i Mellan-Sverige och deras betydelse for glaciationsteorin. Glacialtektoniska strukturer och landformer uppkomna genom istryck âr vanliga i glaciala och interstadiala sediment i ett smalt stràk genom mellersta Sverige. De beskrivna exemplen fran Storsjôtrakten visar att...
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Les Presses de l'Université de Montréal
1988
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Online Access: | https://doi.org/10.7202/032739ar http://id.erudit.org/iderudit/032739ar |
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fttriple:oai:gotriple.eu:10.7202/032739ar 2023-05-15T16:12:09+02:00 Glaciotectonic Structures in Central Sweden and their Significance for Glacial Theory Aber, James S. Lundqvist, Jan 1988-01-01 https://doi.org/10.7202/032739ar http://id.erudit.org/iderudit/032739ar en eng Les Presses de l'Université de Montréal Érudit doi:10.7202/032739ar http://id.erudit.org/iderudit/032739ar other Géographie physique et Quaternaire geo envir Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ 1988 fttriple https://doi.org/10.7202/032739ar 2023-01-22T18:12:21Z Glacialtektoniska strukturer i Mellan-Sverige och deras betydelse for glaciationsteorin. Glacialtektoniska strukturer och landformer uppkomna genom istryck âr vanliga i glaciala och interstadiala sediment i ett smalt stràk genom mellersta Sverige. De beskrivna exemplen fran Storsjôtrakten visar att glacialtektonisk deformation skedde medan omràdet ànnu var tâckt av mâktig inlandsis. Deformationen uppkom genom ett tryck, vars riktning bestamdes av lâget i fôrhallande till isdelaren och isytans lutning fran deanna. Dà isdelarens lâge àndrades under loppet av den senaste glaciationen, àndrades ocksà orienteringen av de glacialtektoniska strukturerna. De glacialtektoniska fenomenen i Fennoskandia fôrdelar sig regionalt pà tre zoner: (1)en inre zon med vitt utbredda sma till medelstora strukturer i àldre glaciala bildningar, (2) en mellanzon med smâ, isolerade strukturer i glaciala bildningar fràn den senaste glaciationen, och (3) en yttre zon med alla typer av stora och sma former och strukturer i de glaciala bildningarna och deras berggrundsunderlag. Dessa zoner utgôr det samlade resultatet av inverkan fràn upprepade glaciationer och àterspeglar utvecklingen under lang tid av de stora inlandsisarnas underlag. Various glaciotectonic structures and landforms created by ice pushing are common in drift and interstadial sediments in a narrow belt of central Sweden. Described examples from the Lake Storsjôn vicinity demonstrate that glaciotectonic deformation took place while the area was deeply covered by the last Fennoscandian Ice Sheet. Deformation was controlled by pressure gradients related to position of the ice divide and ice movement away from the divide. As the position of the divide shifted during the last glaciation, so did the orientation of glaciotectonic structures. The regional distribution of glaciotectonic features in Fennoscandia falls into three zones: (1) inner zone of widespread, small- to moderate-sized features in older drift, (2) intermediate zone of small, isolated features in drift of the last ... Text Fennoscandia Fennoscandian Ice Sheet Inlandsis Unknown Géographie physique et Quaternaire 42 3 315 323 |
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language |
English |
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geo envir |
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geo envir Aber, James S. Lundqvist, Jan Glaciotectonic Structures in Central Sweden and their Significance for Glacial Theory |
topic_facet |
geo envir |
description |
Glacialtektoniska strukturer i Mellan-Sverige och deras betydelse for glaciationsteorin. Glacialtektoniska strukturer och landformer uppkomna genom istryck âr vanliga i glaciala och interstadiala sediment i ett smalt stràk genom mellersta Sverige. De beskrivna exemplen fran Storsjôtrakten visar att glacialtektonisk deformation skedde medan omràdet ànnu var tâckt av mâktig inlandsis. Deformationen uppkom genom ett tryck, vars riktning bestamdes av lâget i fôrhallande till isdelaren och isytans lutning fran deanna. Dà isdelarens lâge àndrades under loppet av den senaste glaciationen, àndrades ocksà orienteringen av de glacialtektoniska strukturerna. De glacialtektoniska fenomenen i Fennoskandia fôrdelar sig regionalt pà tre zoner: (1)en inre zon med vitt utbredda sma till medelstora strukturer i àldre glaciala bildningar, (2) en mellanzon med smâ, isolerade strukturer i glaciala bildningar fràn den senaste glaciationen, och (3) en yttre zon med alla typer av stora och sma former och strukturer i de glaciala bildningarna och deras berggrundsunderlag. Dessa zoner utgôr det samlade resultatet av inverkan fràn upprepade glaciationer och àterspeglar utvecklingen under lang tid av de stora inlandsisarnas underlag. Various glaciotectonic structures and landforms created by ice pushing are common in drift and interstadial sediments in a narrow belt of central Sweden. Described examples from the Lake Storsjôn vicinity demonstrate that glaciotectonic deformation took place while the area was deeply covered by the last Fennoscandian Ice Sheet. Deformation was controlled by pressure gradients related to position of the ice divide and ice movement away from the divide. As the position of the divide shifted during the last glaciation, so did the orientation of glaciotectonic structures. The regional distribution of glaciotectonic features in Fennoscandia falls into three zones: (1) inner zone of widespread, small- to moderate-sized features in older drift, (2) intermediate zone of small, isolated features in drift of the last ... |
format |
Text |
author |
Aber, James S. Lundqvist, Jan |
author_facet |
Aber, James S. Lundqvist, Jan |
author_sort |
Aber, James S. |
title |
Glaciotectonic Structures in Central Sweden and their Significance for Glacial Theory |
title_short |
Glaciotectonic Structures in Central Sweden and their Significance for Glacial Theory |
title_full |
Glaciotectonic Structures in Central Sweden and their Significance for Glacial Theory |
title_fullStr |
Glaciotectonic Structures in Central Sweden and their Significance for Glacial Theory |
title_full_unstemmed |
Glaciotectonic Structures in Central Sweden and their Significance for Glacial Theory |
title_sort |
glaciotectonic structures in central sweden and their significance for glacial theory |
publisher |
Les Presses de l'Université de Montréal |
publishDate |
1988 |
url |
https://doi.org/10.7202/032739ar http://id.erudit.org/iderudit/032739ar |
genre |
Fennoscandia Fennoscandian Ice Sheet Inlandsis |
genre_facet |
Fennoscandia Fennoscandian Ice Sheet Inlandsis |
op_source |
Géographie physique et Quaternaire |
op_relation |
doi:10.7202/032739ar http://id.erudit.org/iderudit/032739ar |
op_rights |
other |
op_doi |
https://doi.org/10.7202/032739ar |
container_title |
Géographie physique et Quaternaire |
container_volume |
42 |
container_issue |
3 |
container_start_page |
315 |
op_container_end_page |
323 |
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1765997407295766528 |