The influence of burial rate on variability in tephra thickness and grain size distribution in Iceland
We explore whether the rate at which a tephra deposit is buried influences the variability (thickness and grain size distribution) within the tephra layer subsequently preserved within the stratigraphic record. This has important implications for understanding how processes of soil formation interac...
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2023
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/the-influence-of-burial-rate-on-variability-in-tephra-thickness-and-grain-size-distribution-in-iceland(14e9c598-d7dc-4e76-bc7c-5a4425fa1989).html https://doi.org/10.1016/j.catena.2023.107025 https://research-repository.st-andrews.ac.uk/bitstream/10023/27285/1/Thompson_2023_Influence_of_burial_rate_Catena_225_107025_CCBY.pdf |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/14e9c598-d7dc-4e76-bc7c-5a4425fa1989 2024-06-23T07:53:57+00:00 The influence of burial rate on variability in tephra thickness and grain size distribution in Iceland Thompson, Polly I.J. Dugmore, Andrew J. Newton, Anthony J. Cutler, Nick A. Streeter, Richard T. 2023-05-15 application/pdf https://research-portal.st-andrews.ac.uk/en/researchoutput/the-influence-of-burial-rate-on-variability-in-tephra-thickness-and-grain-size-distribution-in-iceland(14e9c598-d7dc-4e76-bc7c-5a4425fa1989).html https://doi.org/10.1016/j.catena.2023.107025 https://research-repository.st-andrews.ac.uk/bitstream/10023/27285/1/Thompson_2023_Influence_of_burial_rate_Catena_225_107025_CCBY.pdf eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/the-influence-of-burial-rate-on-variability-in-tephra-thickness-and-grain-size-distribution-in-iceland(14e9c598-d7dc-4e76-bc7c-5a4425fa1989).html info:eu-repo/semantics/openAccess Thompson , P I J , Dugmore , A J , Newton , A J , Cutler , N A & Streeter , R T 2023 , ' The influence of burial rate on variability in tephra thickness and grain size distribution in Iceland ' , Catena , vol. 225 , 107025 . https://doi.org/10.1016/j.catena.2023.107025 Tephra layers Sediment accumulation rates Katla 1918 Iceland article 2023 ftunstandrewcris https://doi.org/10.1016/j.catena.2023.107025 2024-06-13T01:23:47Z We explore whether the rate at which a tephra deposit is buried influences the variability (thickness and grain size distribution) within the tephra layer subsequently preserved within the stratigraphic record. This has important implications for understanding how processes of soil formation interact with the creation of a volcanic record. To assess the relationship between soil formation and the preservation of tephra layers, the thickness and grain size distribution of the Katla 1918 tephra in Iceland and the rate at which it was buried (inferred from the thickness of the overlying soil) was measured 1620 times at six locations. Tephra layer thickness does not correlate with rate of burial, but the proportion of original deposit retained does, and variations in grain size distribution are correlated with burial rate. Our results indicate that whilst medium term (i.e. years-decades) burial processes may contribute less to tephra layer variability than environmental processes operating immediately after deposition, rapid burial facilitates better preservation of the original fallout characteristics with important implications for the accurate reconstruction of past volcanic eruptions based on tephra layer characteristics. There are two key implications: firstly, sites need to be chosen where surface characteristics minimise the initial alterations of tephra deposits, and secondly sites with rapid burial will produce the best quality data, although workable data can be gathered elsewhere if areas of uncertainty are acknowledged. Article in Journal/Newspaper Iceland Katla University of St Andrews: Research Portal Katla ENVELOPE(-19.062,-19.062,63.631,63.631) CATENA 225 107025 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Tephra layers Sediment accumulation rates Katla 1918 Iceland |
spellingShingle |
Tephra layers Sediment accumulation rates Katla 1918 Iceland Thompson, Polly I.J. Dugmore, Andrew J. Newton, Anthony J. Cutler, Nick A. Streeter, Richard T. The influence of burial rate on variability in tephra thickness and grain size distribution in Iceland |
topic_facet |
Tephra layers Sediment accumulation rates Katla 1918 Iceland |
description |
We explore whether the rate at which a tephra deposit is buried influences the variability (thickness and grain size distribution) within the tephra layer subsequently preserved within the stratigraphic record. This has important implications for understanding how processes of soil formation interact with the creation of a volcanic record. To assess the relationship between soil formation and the preservation of tephra layers, the thickness and grain size distribution of the Katla 1918 tephra in Iceland and the rate at which it was buried (inferred from the thickness of the overlying soil) was measured 1620 times at six locations. Tephra layer thickness does not correlate with rate of burial, but the proportion of original deposit retained does, and variations in grain size distribution are correlated with burial rate. Our results indicate that whilst medium term (i.e. years-decades) burial processes may contribute less to tephra layer variability than environmental processes operating immediately after deposition, rapid burial facilitates better preservation of the original fallout characteristics with important implications for the accurate reconstruction of past volcanic eruptions based on tephra layer characteristics. There are two key implications: firstly, sites need to be chosen where surface characteristics minimise the initial alterations of tephra deposits, and secondly sites with rapid burial will produce the best quality data, although workable data can be gathered elsewhere if areas of uncertainty are acknowledged. |
format |
Article in Journal/Newspaper |
author |
Thompson, Polly I.J. Dugmore, Andrew J. Newton, Anthony J. Cutler, Nick A. Streeter, Richard T. |
author_facet |
Thompson, Polly I.J. Dugmore, Andrew J. Newton, Anthony J. Cutler, Nick A. Streeter, Richard T. |
author_sort |
Thompson, Polly I.J. |
title |
The influence of burial rate on variability in tephra thickness and grain size distribution in Iceland |
title_short |
The influence of burial rate on variability in tephra thickness and grain size distribution in Iceland |
title_full |
The influence of burial rate on variability in tephra thickness and grain size distribution in Iceland |
title_fullStr |
The influence of burial rate on variability in tephra thickness and grain size distribution in Iceland |
title_full_unstemmed |
The influence of burial rate on variability in tephra thickness and grain size distribution in Iceland |
title_sort |
influence of burial rate on variability in tephra thickness and grain size distribution in iceland |
publishDate |
2023 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/the-influence-of-burial-rate-on-variability-in-tephra-thickness-and-grain-size-distribution-in-iceland(14e9c598-d7dc-4e76-bc7c-5a4425fa1989).html https://doi.org/10.1016/j.catena.2023.107025 https://research-repository.st-andrews.ac.uk/bitstream/10023/27285/1/Thompson_2023_Influence_of_burial_rate_Catena_225_107025_CCBY.pdf |
long_lat |
ENVELOPE(-19.062,-19.062,63.631,63.631) |
geographic |
Katla |
geographic_facet |
Katla |
genre |
Iceland Katla |
genre_facet |
Iceland Katla |
op_source |
Thompson , P I J , Dugmore , A J , Newton , A J , Cutler , N A & Streeter , R T 2023 , ' The influence of burial rate on variability in tephra thickness and grain size distribution in Iceland ' , Catena , vol. 225 , 107025 . https://doi.org/10.1016/j.catena.2023.107025 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/the-influence-of-burial-rate-on-variability-in-tephra-thickness-and-grain-size-distribution-in-iceland(14e9c598-d7dc-4e76-bc7c-5a4425fa1989).html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.catena.2023.107025 |
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CATENA |
container_volume |
225 |
container_start_page |
107025 |
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