Holocene Chronology of the Brattforsheden Delta and Inland Dune Field, SW Sweden
(2015) In Geochronometria 42(1). p.1-16- Abstract
- Brattforsheden is a large glacifluvial deposit in southwestern Sweden and associated with it is one of Sweden's largest inland dune fields. Although the relative ages of the Brattforsheden deposits are well known, absolute ages from the area are few. In this study we have used optically stimulated luminescence (OSL), surface exposure (Be-10) and radiocarbon (C-14) dating to provide an absolute chronology for the deglaciation and for the Holocene development of the aeolian dunes. Our data show that the deglaciation took place just before 11 ka (11.5 +/- 0.6 ka OSL, 11.3 +/- 0.8 ka Be-10), in line with the C-14-based regional deglaciation age. Aeolian dunes started forming immediately after deglaciation and were active for at least 2000... (More)
- Brattforsheden is a large glacifluvial deposit in southwestern Sweden and associated with it is one of Sweden's largest inland dune fields. Although the relative ages of the Brattforsheden deposits are well known, absolute ages from the area are few. In this study we have used optically stimulated luminescence (OSL), surface exposure (Be-10) and radiocarbon (C-14) dating to provide an absolute chronology for the deglaciation and for the Holocene development of the aeolian dunes. Our data show that the deglaciation took place just before 11 ka (11.5 +/- 0.6 ka OSL, 11.3 +/- 0.8 ka Be-10), in line with the C-14-based regional deglaciation age. Aeolian dunes started forming immediately after deglaciation and were active for at least 2000 years, well after vegetation had established. Renewed aeolian activity occurred 270-180 years ago, resulting in the deposition of sand sheets. Comparison between dating methods and studies of OSL dose distributions show that glacial, glacifluvial and littoral sediments suffer from incomplete bleaching and thus that mean OSL ages from such deposits overestimate the true depositional age. By using small aliquots and statistical age models, this effect can partly be countered. Also, some of the Be-10 ages appear too old, which may be due to previous exposure. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/7613688
- author
- Alexanderson, Helena LU and Fabel, Derek
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- luminescence (OSL) dating, surface exposure dating (Be-10), deglaciation, aeolian, Holocene, Sweden
- in
- Geochronometria
- volume
- 42
- issue
- 1
- pages
- 1 - 16
- publisher
- WIND-J WOJEWODA PUBLISHING CO.
- external identifiers
-
- wos:000355584200001
- scopus:84946918240
- ISSN
- 1897-1695
- DOI
- 10.1515/geochr-2015-0001
- project
- Lund Luminescence Laboratory
- Aeolian activity in Sweden: an unexplored environmental archive
- Aeolian records
- language
- English
- LU publication?
- yes
- id
- abab4a57-d743-4be4-bf4f-b9d3c95061fb (old id 7613688)
- date added to LUP
- 2016-04-01 10:16:45
- date last changed
- 2024-02-05 00:31:58
@article{abab4a57-d743-4be4-bf4f-b9d3c95061fb,
abstract = {{Brattforsheden is a large glacifluvial deposit in southwestern Sweden and associated with it is one of Sweden's largest inland dune fields. Although the relative ages of the Brattforsheden deposits are well known, absolute ages from the area are few. In this study we have used optically stimulated luminescence (OSL), surface exposure (Be-10) and radiocarbon (C-14) dating to provide an absolute chronology for the deglaciation and for the Holocene development of the aeolian dunes. Our data show that the deglaciation took place just before 11 ka (11.5 +/- 0.6 ka OSL, 11.3 +/- 0.8 ka Be-10), in line with the C-14-based regional deglaciation age. Aeolian dunes started forming immediately after deglaciation and were active for at least 2000 years, well after vegetation had established. Renewed aeolian activity occurred 270-180 years ago, resulting in the deposition of sand sheets. Comparison between dating methods and studies of OSL dose distributions show that glacial, glacifluvial and littoral sediments suffer from incomplete bleaching and thus that mean OSL ages from such deposits overestimate the true depositional age. By using small aliquots and statistical age models, this effect can partly be countered. Also, some of the Be-10 ages appear too old, which may be due to previous exposure.}},
author = {{Alexanderson, Helena and Fabel, Derek}},
issn = {{1897-1695}},
keywords = {{luminescence (OSL) dating; surface exposure dating (Be-10); deglaciation; aeolian; Holocene; Sweden}},
language = {{eng}},
number = {{1}},
pages = {{1--16}},
publisher = {{WIND-J WOJEWODA PUBLISHING CO.}},
series = {{Geochronometria}},
title = {{Holocene Chronology of the Brattforsheden Delta and Inland Dune Field, SW Sweden}},
url = {{http://dx.doi.org/10.1515/geochr-2015-0001}},
doi = {{10.1515/geochr-2015-0001}},
volume = {{42}},
year = {{2015}},
}