Optical dating of perennially frozen deposits associated with preserved ancient plant and animal DNA in north-central Siberia
We present chronological constraints on a suite of permanently frozen fluvial deposits which contain ancient DNA (aDNA) from the Taimyr Peninsula of north-central Siberia. The luminescence phenomenology of these samples is first discussed, focusing on the optically stimulated luminescence (OSL) deca...
Published in: | Quaternary Geochronology |
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2008
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Online Access: | https://curis.ku.dk/portal/da/publications/optical-dating-of-perennially-frozen-deposits-associated-with-preserved-ancient-plant-and-animal-dna-in-northcentral-siberia(579380b0-0338-11de-b05e-000ea68e967b).html https://doi.org/10.1016/j.quageo.2007.09.002 |
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ftcopenhagenunip:oai:pure.atira.dk:publications/579380b0-0338-11de-b05e-000ea68e967b 2024-01-14T10:09:54+01:00 Optical dating of perennially frozen deposits associated with preserved ancient plant and animal DNA in north-central Siberia Arnold, L.J. Roberts, R.G. Macphee, R.D.E. Willerslev, E. Tikhonov, A.N. Brock, F. 2008 https://curis.ku.dk/portal/da/publications/optical-dating-of-perennially-frozen-deposits-associated-with-preserved-ancient-plant-and-animal-dna-in-northcentral-siberia(579380b0-0338-11de-b05e-000ea68e967b).html https://doi.org/10.1016/j.quageo.2007.09.002 eng eng info:eu-repo/semantics/restrictedAccess Arnold , L J , Roberts , R G , Macphee , R D E , Willerslev , E , Tikhonov , A N & Brock , F 2008 , ' Optical dating of perennially frozen deposits associated with preserved ancient plant and animal DNA in north-central Siberia ' , Quaternary Geochronology , vol. 3 , no. 1-2 , pp. 114-136 . https://doi.org/10.1016/j.quageo.2007.09.002 article 2008 ftcopenhagenunip https://doi.org/10.1016/j.quageo.2007.09.002 2023-12-20T23:58:57Z We present chronological constraints on a suite of permanently frozen fluvial deposits which contain ancient DNA (aDNA) from the Taimyr Peninsula of north-central Siberia. The luminescence phenomenology of these samples is first discussed, focusing on the optically stimulated luminescence (OSL) decay curve characteristics, thermoluminescence (TL) properties, and signal compositions of quartz from these previously unstudied deposits. Secondly, we assess the suitability of these samples for OSL dating and present the OSL chronologies obtained using both single-grain and multi-grain equivalent dose (De) measurements. The results of our analyses reveal a large amount of inter-aliquot variability in OSL decay curve shape that is directly related to differences in the size of the 280 degrees C TL peak and the associated slowly bleached 'S2' OSL component. Longer OSL stimulation durations are adopted in the D, measurement procedure to prevent the progressive build-up of slowly bleached signal components throughout successive single-aliquot regenerative-dose (SAR) measurement cycles. The use of low preheat temperatures in the SAR procedure also reduces the deleterious effects of these slowly bleached signal components. The resultant single-grain and multi-grain OSL chronologies obtained using this approach are stratigraphically consistent and are in close agreement with independently established 14 C ages at our sites. The findings of this research reveal the potential of OSL dating as a means of providing a reliable chronometric framework for sedimentary aDNA records in permafrost environments. (C) 2007 Elsevier Ltd. All rights reserved Udgivelsesdato: 2008 Article in Journal/Newspaper permafrost Taimyr Siberia University of Copenhagen: Research Quaternary Geochronology 3 1-2 114 136 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
We present chronological constraints on a suite of permanently frozen fluvial deposits which contain ancient DNA (aDNA) from the Taimyr Peninsula of north-central Siberia. The luminescence phenomenology of these samples is first discussed, focusing on the optically stimulated luminescence (OSL) decay curve characteristics, thermoluminescence (TL) properties, and signal compositions of quartz from these previously unstudied deposits. Secondly, we assess the suitability of these samples for OSL dating and present the OSL chronologies obtained using both single-grain and multi-grain equivalent dose (De) measurements. The results of our analyses reveal a large amount of inter-aliquot variability in OSL decay curve shape that is directly related to differences in the size of the 280 degrees C TL peak and the associated slowly bleached 'S2' OSL component. Longer OSL stimulation durations are adopted in the D, measurement procedure to prevent the progressive build-up of slowly bleached signal components throughout successive single-aliquot regenerative-dose (SAR) measurement cycles. The use of low preheat temperatures in the SAR procedure also reduces the deleterious effects of these slowly bleached signal components. The resultant single-grain and multi-grain OSL chronologies obtained using this approach are stratigraphically consistent and are in close agreement with independently established 14 C ages at our sites. The findings of this research reveal the potential of OSL dating as a means of providing a reliable chronometric framework for sedimentary aDNA records in permafrost environments. (C) 2007 Elsevier Ltd. All rights reserved Udgivelsesdato: 2008 |
format |
Article in Journal/Newspaper |
author |
Arnold, L.J. Roberts, R.G. Macphee, R.D.E. Willerslev, E. Tikhonov, A.N. Brock, F. |
spellingShingle |
Arnold, L.J. Roberts, R.G. Macphee, R.D.E. Willerslev, E. Tikhonov, A.N. Brock, F. Optical dating of perennially frozen deposits associated with preserved ancient plant and animal DNA in north-central Siberia |
author_facet |
Arnold, L.J. Roberts, R.G. Macphee, R.D.E. Willerslev, E. Tikhonov, A.N. Brock, F. |
author_sort |
Arnold, L.J. |
title |
Optical dating of perennially frozen deposits associated with preserved ancient plant and animal DNA in north-central Siberia |
title_short |
Optical dating of perennially frozen deposits associated with preserved ancient plant and animal DNA in north-central Siberia |
title_full |
Optical dating of perennially frozen deposits associated with preserved ancient plant and animal DNA in north-central Siberia |
title_fullStr |
Optical dating of perennially frozen deposits associated with preserved ancient plant and animal DNA in north-central Siberia |
title_full_unstemmed |
Optical dating of perennially frozen deposits associated with preserved ancient plant and animal DNA in north-central Siberia |
title_sort |
optical dating of perennially frozen deposits associated with preserved ancient plant and animal dna in north-central siberia |
publishDate |
2008 |
url |
https://curis.ku.dk/portal/da/publications/optical-dating-of-perennially-frozen-deposits-associated-with-preserved-ancient-plant-and-animal-dna-in-northcentral-siberia(579380b0-0338-11de-b05e-000ea68e967b).html https://doi.org/10.1016/j.quageo.2007.09.002 |
genre |
permafrost Taimyr Siberia |
genre_facet |
permafrost Taimyr Siberia |
op_source |
Arnold , L J , Roberts , R G , Macphee , R D E , Willerslev , E , Tikhonov , A N & Brock , F 2008 , ' Optical dating of perennially frozen deposits associated with preserved ancient plant and animal DNA in north-central Siberia ' , Quaternary Geochronology , vol. 3 , no. 1-2 , pp. 114-136 . https://doi.org/10.1016/j.quageo.2007.09.002 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.quageo.2007.09.002 |
container_title |
Quaternary Geochronology |
container_volume |
3 |
container_issue |
1-2 |
container_start_page |
114 |
op_container_end_page |
136 |
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1788064487532658688 |