Scottish early Holocene vegetation dynamics based on pollen and tephra records from Inverlair and Loch Etteridge, Inverness-shire
This paper presents the results of an investigation of early Holocene cryptotephra layers recovered from sediments in two kettle-hole basins at Inverlair (Glen Spean) and Loch Etteridge (Glen Fernisdale). Electron probe micro-analysis (EPMA) of shards from two cryptotephra layers revealed that the u...
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Online Access: | https://doi.org/10.1016/j.pgeola.2016.02.008 https://researchportal.port.ac.uk/portal/en/publications/scottish-early-holocene-vegetation-dynamics-based-on-pollen-and-tephra-records-from-inverlair-and-loch-etteridge-invernessshire(5154164f-cbda-4b88-95a3-18511c1c2d52).html https://researchportal.port.ac.uk/ws/files/3737200/Scottish_early_Holocene_vegetation_dynamics.pdf |
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ftunivportsmpubl:oai:researchportal.port.ac.uk:publications/5154164f-cbda-4b88-95a3-18511c1c2d52 2023-05-15T16:10:59+02:00 Scottish early Holocene vegetation dynamics based on pollen and tephra records from Inverlair and Loch Etteridge, Inverness-shire Kelly, Thomas J. Hardiman, Mark John Lovelady, Michael Lowe, J. John Matthews, Ian P. Blockley, Simon P.E. 2017-02 application/pdf https://doi.org/10.1016/j.pgeola.2016.02.008 https://researchportal.port.ac.uk/portal/en/publications/scottish-early-holocene-vegetation-dynamics-based-on-pollen-and-tephra-records-from-inverlair-and-loch-etteridge-invernessshire(5154164f-cbda-4b88-95a3-18511c1c2d52).html https://researchportal.port.ac.uk/ws/files/3737200/Scottish_early_Holocene_vegetation_dynamics.pdf eng eng info:eu-repo/semantics/openAccess Kelly , T J , Hardiman , M J , Lovelady , M , Lowe , J J , Matthews , I P & Blockley , S P E 2017 , ' Scottish early Holocene vegetation dynamics based on pollen and tephra records from Inverlair and Loch Etteridge, Inverness-shire ' Proceedings of the Geologists' Association , vol 128 , no. 1 , pp. 125-135 . DOI:10.1016/j.pgeola.2016.02.008 RCUK NERC /dk/atira/pure/core/subjects/geography Geography article 2017 ftunivportsmpubl https://doi.org/10.1016/j.pgeola.2016.02.008 2017-09-28T19:35:39Z This paper presents the results of an investigation of early Holocene cryptotephra layers recovered from sediments in two kettle-hole basins at Inverlair (Glen Spean) and Loch Etteridge (Glen Fernisdale). Electron probe micro-analysis (EPMA) of shards from two cryptotephra layers revealed that the uppermost layer in both sequences has a composition similar to the An Druim tephra, first reported from a site in Northern Scotland. We present evidence that distinguishes the An Druim from the chemically very similar early Holocene Ashik tephra. The lowermost layer at Inverlair matches the composition of the Askja-S tephra found in the Faroe Islands, Ireland, Sweden, Germany and Switzerland. This is the first published record of the Askja-S tephra from mainland Scotland. As at other sites, the Askja-S seems to mark a short-lived climatic deterioration, most likely the Pre-Boreal Oscillation: at Inverlair it occurs just above an oscillation represented by a reduction in LOI values and in the abundance of Betula pollen, and by a peak in Juniperus pollen. The lowermost layer at Loch Etteridge has a Katla-type chemistry and extends through the upper part of the Loch Lomond (Younger Dryas/GS-1) Stadial to the Stadial/Holocene transition; it may represent a composite layer which merges the Vedde and Abernethy tephras. One of the key conclusions is that the glacial-melt deposits in the vicinity of Inverlair (kames and kame terraces) were ice-free by c.10.83 ka (the age of the Askja-S), providing a limiting age on the disappearance of LLR ice in Glen Spean. Article in Journal/Newspaper Faroe Islands University of Portsmouth: Portsmouth Research Portal Askja ENVELOPE(-16.802,-16.802,65.042,65.042) Faroe Islands Katla ENVELOPE(-19.062,-19.062,63.631,63.631) Loch Lomond ENVELOPE(-125.746,-125.746,54.239,54.239) Proceedings of the Geologists' Association 128 1 125 135 |
institution |
Open Polar |
collection |
University of Portsmouth: Portsmouth Research Portal |
op_collection_id |
ftunivportsmpubl |
language |
English |
topic |
RCUK NERC /dk/atira/pure/core/subjects/geography Geography |
spellingShingle |
RCUK NERC /dk/atira/pure/core/subjects/geography Geography Kelly, Thomas J. Hardiman, Mark John Lovelady, Michael Lowe, J. John Matthews, Ian P. Blockley, Simon P.E. Scottish early Holocene vegetation dynamics based on pollen and tephra records from Inverlair and Loch Etteridge, Inverness-shire |
topic_facet |
RCUK NERC /dk/atira/pure/core/subjects/geography Geography |
description |
This paper presents the results of an investigation of early Holocene cryptotephra layers recovered from sediments in two kettle-hole basins at Inverlair (Glen Spean) and Loch Etteridge (Glen Fernisdale). Electron probe micro-analysis (EPMA) of shards from two cryptotephra layers revealed that the uppermost layer in both sequences has a composition similar to the An Druim tephra, first reported from a site in Northern Scotland. We present evidence that distinguishes the An Druim from the chemically very similar early Holocene Ashik tephra. The lowermost layer at Inverlair matches the composition of the Askja-S tephra found in the Faroe Islands, Ireland, Sweden, Germany and Switzerland. This is the first published record of the Askja-S tephra from mainland Scotland. As at other sites, the Askja-S seems to mark a short-lived climatic deterioration, most likely the Pre-Boreal Oscillation: at Inverlair it occurs just above an oscillation represented by a reduction in LOI values and in the abundance of Betula pollen, and by a peak in Juniperus pollen. The lowermost layer at Loch Etteridge has a Katla-type chemistry and extends through the upper part of the Loch Lomond (Younger Dryas/GS-1) Stadial to the Stadial/Holocene transition; it may represent a composite layer which merges the Vedde and Abernethy tephras. One of the key conclusions is that the glacial-melt deposits in the vicinity of Inverlair (kames and kame terraces) were ice-free by c.10.83 ka (the age of the Askja-S), providing a limiting age on the disappearance of LLR ice in Glen Spean. |
format |
Article in Journal/Newspaper |
author |
Kelly, Thomas J. Hardiman, Mark John Lovelady, Michael Lowe, J. John Matthews, Ian P. Blockley, Simon P.E. |
author_facet |
Kelly, Thomas J. Hardiman, Mark John Lovelady, Michael Lowe, J. John Matthews, Ian P. Blockley, Simon P.E. |
author_sort |
Kelly, Thomas J. |
title |
Scottish early Holocene vegetation dynamics based on pollen and tephra records from Inverlair and Loch Etteridge, Inverness-shire |
title_short |
Scottish early Holocene vegetation dynamics based on pollen and tephra records from Inverlair and Loch Etteridge, Inverness-shire |
title_full |
Scottish early Holocene vegetation dynamics based on pollen and tephra records from Inverlair and Loch Etteridge, Inverness-shire |
title_fullStr |
Scottish early Holocene vegetation dynamics based on pollen and tephra records from Inverlair and Loch Etteridge, Inverness-shire |
title_full_unstemmed |
Scottish early Holocene vegetation dynamics based on pollen and tephra records from Inverlair and Loch Etteridge, Inverness-shire |
title_sort |
scottish early holocene vegetation dynamics based on pollen and tephra records from inverlair and loch etteridge, inverness-shire |
publishDate |
2017 |
url |
https://doi.org/10.1016/j.pgeola.2016.02.008 https://researchportal.port.ac.uk/portal/en/publications/scottish-early-holocene-vegetation-dynamics-based-on-pollen-and-tephra-records-from-inverlair-and-loch-etteridge-invernessshire(5154164f-cbda-4b88-95a3-18511c1c2d52).html https://researchportal.port.ac.uk/ws/files/3737200/Scottish_early_Holocene_vegetation_dynamics.pdf |
long_lat |
ENVELOPE(-16.802,-16.802,65.042,65.042) ENVELOPE(-19.062,-19.062,63.631,63.631) ENVELOPE(-125.746,-125.746,54.239,54.239) |
geographic |
Askja Faroe Islands Katla Loch Lomond |
geographic_facet |
Askja Faroe Islands Katla Loch Lomond |
genre |
Faroe Islands |
genre_facet |
Faroe Islands |
op_source |
Kelly , T J , Hardiman , M J , Lovelady , M , Lowe , J J , Matthews , I P & Blockley , S P E 2017 , ' Scottish early Holocene vegetation dynamics based on pollen and tephra records from Inverlair and Loch Etteridge, Inverness-shire ' Proceedings of the Geologists' Association , vol 128 , no. 1 , pp. 125-135 . DOI:10.1016/j.pgeola.2016.02.008 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.pgeola.2016.02.008 |
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Proceedings of the Geologists' Association |
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128 |
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125 |
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