Advanced

A short-lived aeolian event during the Early Holocene in southeastern Norway

Alexanderson, Helena LU and Henriksen, Mona (2015) In Quaternary Geochronology 30. p.175-180
Abstract
The Starmoen dune field is part of a larger aeolian system in the Jomna and Glomma river valleys in southeastern Norway. It is believed to have formed just after the last deglaciation in the area, but no absolute ages have been available to support this. Here, we present a set of quartz optically stimulated luminescence (OSL) ages from the aeolian sediments and the underlying glacifluvial deposits. The results show that the main dune-building phase was a short-lived event similar to 10 ka ago, likely with a duration less than a few hundred years. This suggests a rapid stabilisation of an initially unstable environment in newly deglaciated terrain. A much younger event with limited and surficial reworking of sand is dated to 770 +/- 110... (More)
The Starmoen dune field is part of a larger aeolian system in the Jomna and Glomma river valleys in southeastern Norway. It is believed to have formed just after the last deglaciation in the area, but no absolute ages have been available to support this. Here, we present a set of quartz optically stimulated luminescence (OSL) ages from the aeolian sediments and the underlying glacifluvial deposits. The results show that the main dune-building phase was a short-lived event similar to 10 ka ago, likely with a duration less than a few hundred years. This suggests a rapid stabilisation of an initially unstable environment in newly deglaciated terrain. A much younger event with limited and surficial reworking of sand is dated to 770 +/- 110 years ago, and the modern age of an active dune provide additional OSL quality control. Age overestimation is found for glacifluvial sediments, probably due to incomplete bleaching as indicated by e.g. scattered dose distributions from small aliquots. OSL measurements were conducted using coarse quartz grains (180-250 m), which show a dominance of a fast signal component. (C) 2015 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
OSL, Eolian, Inland dune, Holocene, Norway
in
Quaternary Geochronology
volume
30
pages
175 - 180
publisher
Elsevier
external identifiers
  • wos:000366538200008
  • scopus:84947035857
ISSN
1871-1014
DOI
10.1016/j.quageo.2015.02.014
language
English
LU publication?
yes
id
bbb71f60-03c4-4b2e-b114-7804c33fbb06 (old id 8556661)
date added to LUP
2016-01-26 14:57:38
date last changed
2017-10-01 04:13:04
@article{bbb71f60-03c4-4b2e-b114-7804c33fbb06,
  abstract     = {The Starmoen dune field is part of a larger aeolian system in the Jomna and Glomma river valleys in southeastern Norway. It is believed to have formed just after the last deglaciation in the area, but no absolute ages have been available to support this. Here, we present a set of quartz optically stimulated luminescence (OSL) ages from the aeolian sediments and the underlying glacifluvial deposits. The results show that the main dune-building phase was a short-lived event similar to 10 ka ago, likely with a duration less than a few hundred years. This suggests a rapid stabilisation of an initially unstable environment in newly deglaciated terrain. A much younger event with limited and surficial reworking of sand is dated to 770 +/- 110 years ago, and the modern age of an active dune provide additional OSL quality control. Age overestimation is found for glacifluvial sediments, probably due to incomplete bleaching as indicated by e.g. scattered dose distributions from small aliquots. OSL measurements were conducted using coarse quartz grains (180-250 m), which show a dominance of a fast signal component. (C) 2015 Elsevier B.V. All rights reserved.},
  author       = {Alexanderson, Helena and Henriksen, Mona},
  issn         = {1871-1014},
  keyword      = {OSL,Eolian,Inland dune,Holocene,Norway},
  language     = {eng},
  pages        = {175--180},
  publisher    = {Elsevier},
  series       = {Quaternary Geochronology},
  title        = {A short-lived aeolian event during the Early Holocene in southeastern Norway},
  url          = {http://dx.doi.org/10.1016/j.quageo.2015.02.014},
  volume       = {30},
  year         = {2015},
}