Kvartærgeologisk kartlegging og isavsmeltingshistorie i Sunndalen, Møre og Romsdal
The age of three terminal glacial deposits located at Hoås, Gikling and Romfo in the Sunndalen valley, Møre & Romsdal, has been uncertain. The aim of this study has been to document these deposits to clarify the chronology and to reconstruct the deglaciation history of the area. The methods used...
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Format: | Master Thesis |
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The University of Bergen
2013
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Online Access: | https://hdl.handle.net/1956/6791 |
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ftunivbergen:oai:bora.uib.no:1956/6791 2023-05-15T16:21:58+02:00 Kvartærgeologisk kartlegging og isavsmeltingshistorie i Sunndalen, Møre og Romsdal Østergaard, Celine Djuve 2013-06-03 13080437 bytes application/pdf https://hdl.handle.net/1956/6791 nno nno The University of Bergen https://hdl.handle.net/1956/6791 Copyright the author. All rights reserved 756199 Master thesis 2013 ftunivbergen 2023-03-14T17:39:28Z The age of three terminal glacial deposits located at Hoås, Gikling and Romfo in the Sunndalen valley, Møre & Romsdal, has been uncertain. The aim of this study has been to document these deposits to clarify the chronology and to reconstruct the deglaciation history of the area. The methods used in this study are quaternary mapping and examination of the sedimentary stratigraphy. Ground Penetrating Radar measurements were also conducted. Correlation to established sea level curve diagrams has been used for an indirect dating of the deposits. Theoretical glacier surface profiles have been developed to connect the terminal deposits to lateral moraines in the study area. These have been used to reconstruct the simultaneous glacier extent of the glacier in Sunndalen. The dating methods shows that the age of the deposits at Hoås and Gikling is respectively from early Younger Dryas and late Younger Dryas (12 800-11 600 yr BP). Romfo is situated above the marine limit of the valley, and it is therefore still uncertain if this deposit also is of a late Younger Dryas age, or is slightly younger. The glacial extent is reconstructed for four stages of readvance or stagnation during the deglaciation phase, from the oldest to the youngest; Løstøltrinnet, Hoåstrinnet - early Younger Dryas, Giklingtrinnet - late Younger Dryas and Romfotrinnet. Even though each of these stages and the terminal deposits at Hoås and Gikling most likely represents glacial readvances and periods of stagnation, the results unambiguously shows that a net deglaciation has occurred trough the period Younger Dryas. This deglaciation chronology can be connected to a somewhat similar deglaciation history in the Trondheimsfjorden area, but differs from the development in the South Western parts of Norway, where at the same time the glacier reached its maximum extent at the end of this cold period. Alderen på tre randavsetningar lokalisert ved Hoås, Gikling og Romfo i Sunndalen, Møre og Romsdal, har vore uviss. Målsettinga med denne studien var å ... Master Thesis glacier University of Bergen: Bergen Open Research Archive (BORA-UiB) Gikling ENVELOPE(8.832,8.832,62.637,62.637) Hoås ENVELOPE(8.741,8.741,62.647,62.647) Norway Romfo ENVELOPE(8.939,8.939,62.602,62.602) Sunndalen ENVELOPE(8.612,8.612,62.653,62.653) |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
Norwegian Nynorsk |
topic |
756199 |
spellingShingle |
756199 Østergaard, Celine Djuve Kvartærgeologisk kartlegging og isavsmeltingshistorie i Sunndalen, Møre og Romsdal |
topic_facet |
756199 |
description |
The age of three terminal glacial deposits located at Hoås, Gikling and Romfo in the Sunndalen valley, Møre & Romsdal, has been uncertain. The aim of this study has been to document these deposits to clarify the chronology and to reconstruct the deglaciation history of the area. The methods used in this study are quaternary mapping and examination of the sedimentary stratigraphy. Ground Penetrating Radar measurements were also conducted. Correlation to established sea level curve diagrams has been used for an indirect dating of the deposits. Theoretical glacier surface profiles have been developed to connect the terminal deposits to lateral moraines in the study area. These have been used to reconstruct the simultaneous glacier extent of the glacier in Sunndalen. The dating methods shows that the age of the deposits at Hoås and Gikling is respectively from early Younger Dryas and late Younger Dryas (12 800-11 600 yr BP). Romfo is situated above the marine limit of the valley, and it is therefore still uncertain if this deposit also is of a late Younger Dryas age, or is slightly younger. The glacial extent is reconstructed for four stages of readvance or stagnation during the deglaciation phase, from the oldest to the youngest; Løstøltrinnet, Hoåstrinnet - early Younger Dryas, Giklingtrinnet - late Younger Dryas and Romfotrinnet. Even though each of these stages and the terminal deposits at Hoås and Gikling most likely represents glacial readvances and periods of stagnation, the results unambiguously shows that a net deglaciation has occurred trough the period Younger Dryas. This deglaciation chronology can be connected to a somewhat similar deglaciation history in the Trondheimsfjorden area, but differs from the development in the South Western parts of Norway, where at the same time the glacier reached its maximum extent at the end of this cold period. Alderen på tre randavsetningar lokalisert ved Hoås, Gikling og Romfo i Sunndalen, Møre og Romsdal, har vore uviss. Målsettinga med denne studien var å ... |
format |
Master Thesis |
author |
Østergaard, Celine Djuve |
author_facet |
Østergaard, Celine Djuve |
author_sort |
Østergaard, Celine Djuve |
title |
Kvartærgeologisk kartlegging og isavsmeltingshistorie i Sunndalen, Møre og Romsdal |
title_short |
Kvartærgeologisk kartlegging og isavsmeltingshistorie i Sunndalen, Møre og Romsdal |
title_full |
Kvartærgeologisk kartlegging og isavsmeltingshistorie i Sunndalen, Møre og Romsdal |
title_fullStr |
Kvartærgeologisk kartlegging og isavsmeltingshistorie i Sunndalen, Møre og Romsdal |
title_full_unstemmed |
Kvartærgeologisk kartlegging og isavsmeltingshistorie i Sunndalen, Møre og Romsdal |
title_sort |
kvartærgeologisk kartlegging og isavsmeltingshistorie i sunndalen, møre og romsdal |
publisher |
The University of Bergen |
publishDate |
2013 |
url |
https://hdl.handle.net/1956/6791 |
long_lat |
ENVELOPE(8.832,8.832,62.637,62.637) ENVELOPE(8.741,8.741,62.647,62.647) ENVELOPE(8.939,8.939,62.602,62.602) ENVELOPE(8.612,8.612,62.653,62.653) |
geographic |
Gikling Hoås Norway Romfo Sunndalen |
geographic_facet |
Gikling Hoås Norway Romfo Sunndalen |
genre |
glacier |
genre_facet |
glacier |
op_relation |
https://hdl.handle.net/1956/6791 |
op_rights |
Copyright the author. All rights reserved |
_version_ |
1766009938348343296 |