Identification of the Askja-S Tephra in a rare turlough record from Pant-y-Llyn, south Wales
Tephrochronology and especially crypto-tephrochronology is an established chronological technique employed in a range of depositional environments in Europe and beyond. During the late Quaternary, Icelandic cryptotephra deposits are widely found in palaeorecords across northern latitudes of Europe e...
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ftnerc:oai:nora.nerc.ac.uk:517758 2023-05-15T16:10:55+02:00 Identification of the Askja-S Tephra in a rare turlough record from Pant-y-Llyn, south Wales Jones, Gwydion Davies, Siwan M. Farr, Gareth John Bevan, Jamie 2017 text http://nora.nerc.ac.uk/id/eprint/517758/ https://nora.nerc.ac.uk/id/eprint/517758/1/PGA%20manuscript%20revised_.pdf https://doi.org/10.1016/j.pgeola.2017.05.010 en eng Elsevier https://nora.nerc.ac.uk/id/eprint/517758/1/PGA%20manuscript%20revised_.pdf Jones, Gwydion; Davies, Siwan M.; Farr, Gareth John; Bevan, Jamie. 2017 Identification of the Askja-S Tephra in a rare turlough record from Pant-y-Llyn, south Wales. Proceedings of the Geologists' Association, 128 (4). 523-530. https://doi.org/10.1016/j.pgeola.2017.05.010 <https://doi.org/10.1016/j.pgeola.2017.05.010> Publication - Article PeerReviewed 2017 ftnerc https://doi.org/10.1016/j.pgeola.2017.05.010 2023-02-04T19:45:20Z Tephrochronology and especially crypto-tephrochronology is an established chronological technique employed in a range of depositional environments in Europe and beyond. During the late Quaternary, Icelandic cryptotephra deposits are widely found in palaeorecords across northern latitudes of Europe e.g. Scotland, Ireland, Norway, Sweden and the Faroe Islands but are sporadic in southerly latitudes as distance from Iceland increases. As yet, very few Icelandic cryptotephras have been identified in Wales or southern England which may well reflect the geographical limit of Icelandic tephra distribution. Here, however, we report the discovery of an Icelandic cryptotephra deposit within a sediment sequence retrieved from the Pant-y-Llyn turlough (Carmarthenshire, south Wales), the only known turlough in Britain. Turloughs are groundwater-fed ephemeral lakes associated with limestone bedrock and can accumulate sediments that may yield records suitable for palaeoreconstructions. A discrete peak of glass shards originating from the Askja-S eruption is identified in the sediment record. This discovery extends the distribution of this early Holocene eruption giving new insight into its dispersal patterns and also indicates that sedimentary sequences from sites in these more southerly latitudes are valuable repositories for ash preservation. Furthermore, its discovery within a carbonate-rich sequence provides a minimum age constraint on the timing of sediment accumulation and provides an alternative tool for what is typically a problematic dating environment. Article in Journal/Newspaper Faroe Islands Iceland Natural Environment Research Council: NERC Open Research Archive Faroe Islands Norway Askja ENVELOPE(-16.802,-16.802,65.042,65.042) Proceedings of the Geologists' Association 128 4 523 530 |
institution |
Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
English |
description |
Tephrochronology and especially crypto-tephrochronology is an established chronological technique employed in a range of depositional environments in Europe and beyond. During the late Quaternary, Icelandic cryptotephra deposits are widely found in palaeorecords across northern latitudes of Europe e.g. Scotland, Ireland, Norway, Sweden and the Faroe Islands but are sporadic in southerly latitudes as distance from Iceland increases. As yet, very few Icelandic cryptotephras have been identified in Wales or southern England which may well reflect the geographical limit of Icelandic tephra distribution. Here, however, we report the discovery of an Icelandic cryptotephra deposit within a sediment sequence retrieved from the Pant-y-Llyn turlough (Carmarthenshire, south Wales), the only known turlough in Britain. Turloughs are groundwater-fed ephemeral lakes associated with limestone bedrock and can accumulate sediments that may yield records suitable for palaeoreconstructions. A discrete peak of glass shards originating from the Askja-S eruption is identified in the sediment record. This discovery extends the distribution of this early Holocene eruption giving new insight into its dispersal patterns and also indicates that sedimentary sequences from sites in these more southerly latitudes are valuable repositories for ash preservation. Furthermore, its discovery within a carbonate-rich sequence provides a minimum age constraint on the timing of sediment accumulation and provides an alternative tool for what is typically a problematic dating environment. |
format |
Article in Journal/Newspaper |
author |
Jones, Gwydion Davies, Siwan M. Farr, Gareth John Bevan, Jamie |
spellingShingle |
Jones, Gwydion Davies, Siwan M. Farr, Gareth John Bevan, Jamie Identification of the Askja-S Tephra in a rare turlough record from Pant-y-Llyn, south Wales |
author_facet |
Jones, Gwydion Davies, Siwan M. Farr, Gareth John Bevan, Jamie |
author_sort |
Jones, Gwydion |
title |
Identification of the Askja-S Tephra in a rare turlough record from Pant-y-Llyn, south Wales |
title_short |
Identification of the Askja-S Tephra in a rare turlough record from Pant-y-Llyn, south Wales |
title_full |
Identification of the Askja-S Tephra in a rare turlough record from Pant-y-Llyn, south Wales |
title_fullStr |
Identification of the Askja-S Tephra in a rare turlough record from Pant-y-Llyn, south Wales |
title_full_unstemmed |
Identification of the Askja-S Tephra in a rare turlough record from Pant-y-Llyn, south Wales |
title_sort |
identification of the askja-s tephra in a rare turlough record from pant-y-llyn, south wales |
publisher |
Elsevier |
publishDate |
2017 |
url |
http://nora.nerc.ac.uk/id/eprint/517758/ https://nora.nerc.ac.uk/id/eprint/517758/1/PGA%20manuscript%20revised_.pdf https://doi.org/10.1016/j.pgeola.2017.05.010 |
long_lat |
ENVELOPE(-16.802,-16.802,65.042,65.042) |
geographic |
Faroe Islands Norway Askja |
geographic_facet |
Faroe Islands Norway Askja |
genre |
Faroe Islands Iceland |
genre_facet |
Faroe Islands Iceland |
op_relation |
https://nora.nerc.ac.uk/id/eprint/517758/1/PGA%20manuscript%20revised_.pdf Jones, Gwydion; Davies, Siwan M.; Farr, Gareth John; Bevan, Jamie. 2017 Identification of the Askja-S Tephra in a rare turlough record from Pant-y-Llyn, south Wales. Proceedings of the Geologists' Association, 128 (4). 523-530. https://doi.org/10.1016/j.pgeola.2017.05.010 <https://doi.org/10.1016/j.pgeola.2017.05.010> |
op_doi |
https://doi.org/10.1016/j.pgeola.2017.05.010 |
container_title |
Proceedings of the Geologists' Association |
container_volume |
128 |
container_issue |
4 |
container_start_page |
523 |
op_container_end_page |
530 |
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1765996042433593344 |