Do peatlands or lakes provide the most comprehensive distal tephra records?
Despite the widespread application of tephra studies for dating and correlation of stratigraphic sequences (‘tephrochronology’), questions remain over the reliability and replicability of tephra records from lake sediments and peats, particularly in sites >1000 km from source volcanoes. To addres...
Published in: | Quaternary Science Reviews |
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2016
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/do-peatlands-or-lakes-provide-the-most-comprehensive-distal-tephra-records(62524153-d8e8-495f-813f-de56b9489a0b).html https://doi.org/10.1016/j.quascirev.2016.03.011 https://research-repository.st-andrews.ac.uk/bitstream/10023/8468/1/Lawson_2016_DistalTephra_QSR_CC.pdf |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/62524153-d8e8-495f-813f-de56b9489a0b 2024-06-23T07:50:37+00:00 Do peatlands or lakes provide the most comprehensive distal tephra records? Watson, E. J. Swindles, G. T. Lawson, Ian Thomas Savov, I. P. 2016-05-01 application/pdf https://research-portal.st-andrews.ac.uk/en/researchoutput/do-peatlands-or-lakes-provide-the-most-comprehensive-distal-tephra-records(62524153-d8e8-495f-813f-de56b9489a0b).html https://doi.org/10.1016/j.quascirev.2016.03.011 https://research-repository.st-andrews.ac.uk/bitstream/10023/8468/1/Lawson_2016_DistalTephra_QSR_CC.pdf eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/do-peatlands-or-lakes-provide-the-most-comprehensive-distal-tephra-records(62524153-d8e8-495f-813f-de56b9489a0b).html info:eu-repo/semantics/openAccess Watson , E J , Swindles , G T , Lawson , I T & Savov , I P 2016 , ' Do peatlands or lakes provide the most comprehensive distal tephra records? ' , Quaternary Science Reviews , vol. 139 , pp. 110-128 . https://doi.org/10.1016/j.quascirev.2016.03.011 Tephrochronology Cryptotephra Northern Europe Holocene Basalt article 2016 ftunstandrewcris https://doi.org/10.1016/j.quascirev.2016.03.011 2024-06-13T00:51:34Z Despite the widespread application of tephra studies for dating and correlation of stratigraphic sequences (‘tephrochronology’), questions remain over the reliability and replicability of tephra records from lake sediments and peats, particularly in sites >1000 km from source volcanoes. To address this, we examine the tephrostratigraphy of four pairs of lake and peatland sites in close proximity to one another (<10 km), and evaluate the extent to which the microscopic (crypto-) tephra records in lakes and peatlands differ. The peatlands typically record more cryptotephra layers than nearby lakes, but cryptotephra records from high-latitude peatlands can be incomplete, possibly due to tephra fallout onto snow and subsequent redistribution across the peatland surface by wind and during snowmelt. We find no evidence for chemical alteration of glass shards in peatland or lake environments over the time scale of this study (mid-to late- Holocene). Instead, the low number of basaltic cryptotephra layers identified in distal peatlands reflects the capture of only primary tephra-fall, whereas lakes concentrate tephra falling across their catchments which subsequently washes into the lake, adding to the primary tephra fallout received in the lake. A combination of records from both lakes and peatlands must be used to establish the most comprehensive and complete regional tephrostratigraphies. We also describe two previously unreported late Holocene cryptotephras and demonstrate, for the first time, that Holocene Icelandic ash clouds frequently reached Arctic Sweden. Article in Journal/Newspaper Arctic University of St Andrews: Research Portal Arctic Quaternary Science Reviews 139 110 128 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Tephrochronology Cryptotephra Northern Europe Holocene Basalt |
spellingShingle |
Tephrochronology Cryptotephra Northern Europe Holocene Basalt Watson, E. J. Swindles, G. T. Lawson, Ian Thomas Savov, I. P. Do peatlands or lakes provide the most comprehensive distal tephra records? |
topic_facet |
Tephrochronology Cryptotephra Northern Europe Holocene Basalt |
description |
Despite the widespread application of tephra studies for dating and correlation of stratigraphic sequences (‘tephrochronology’), questions remain over the reliability and replicability of tephra records from lake sediments and peats, particularly in sites >1000 km from source volcanoes. To address this, we examine the tephrostratigraphy of four pairs of lake and peatland sites in close proximity to one another (<10 km), and evaluate the extent to which the microscopic (crypto-) tephra records in lakes and peatlands differ. The peatlands typically record more cryptotephra layers than nearby lakes, but cryptotephra records from high-latitude peatlands can be incomplete, possibly due to tephra fallout onto snow and subsequent redistribution across the peatland surface by wind and during snowmelt. We find no evidence for chemical alteration of glass shards in peatland or lake environments over the time scale of this study (mid-to late- Holocene). Instead, the low number of basaltic cryptotephra layers identified in distal peatlands reflects the capture of only primary tephra-fall, whereas lakes concentrate tephra falling across their catchments which subsequently washes into the lake, adding to the primary tephra fallout received in the lake. A combination of records from both lakes and peatlands must be used to establish the most comprehensive and complete regional tephrostratigraphies. We also describe two previously unreported late Holocene cryptotephras and demonstrate, for the first time, that Holocene Icelandic ash clouds frequently reached Arctic Sweden. |
format |
Article in Journal/Newspaper |
author |
Watson, E. J. Swindles, G. T. Lawson, Ian Thomas Savov, I. P. |
author_facet |
Watson, E. J. Swindles, G. T. Lawson, Ian Thomas Savov, I. P. |
author_sort |
Watson, E. J. |
title |
Do peatlands or lakes provide the most comprehensive distal tephra records? |
title_short |
Do peatlands or lakes provide the most comprehensive distal tephra records? |
title_full |
Do peatlands or lakes provide the most comprehensive distal tephra records? |
title_fullStr |
Do peatlands or lakes provide the most comprehensive distal tephra records? |
title_full_unstemmed |
Do peatlands or lakes provide the most comprehensive distal tephra records? |
title_sort |
do peatlands or lakes provide the most comprehensive distal tephra records? |
publishDate |
2016 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/do-peatlands-or-lakes-provide-the-most-comprehensive-distal-tephra-records(62524153-d8e8-495f-813f-de56b9489a0b).html https://doi.org/10.1016/j.quascirev.2016.03.011 https://research-repository.st-andrews.ac.uk/bitstream/10023/8468/1/Lawson_2016_DistalTephra_QSR_CC.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Watson , E J , Swindles , G T , Lawson , I T & Savov , I P 2016 , ' Do peatlands or lakes provide the most comprehensive distal tephra records? ' , Quaternary Science Reviews , vol. 139 , pp. 110-128 . https://doi.org/10.1016/j.quascirev.2016.03.011 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/do-peatlands-or-lakes-provide-the-most-comprehensive-distal-tephra-records(62524153-d8e8-495f-813f-de56b9489a0b).html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2016.03.011 |
container_title |
Quaternary Science Reviews |
container_volume |
139 |
container_start_page |
110 |
op_container_end_page |
128 |
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1802641532310781952 |