An aeolian or a glaciolacustrine record? A case study from Mieļupīte, Middle Gauja Lowland, northeast Latvia
Abstract In the Middle Gauja Lowland, northeast Latvia, dunes are distributed over a vast glaciolacustrine plain that formed during the retreat of the Fennoscandian ice sheet. Such a direct contact between aeolian and glaciolacustrine sediments can be used to infer depositional settings and decipher...
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crdegruyter:10.1515/logos-2017-0002 2024-03-03T08:44:19+00:00 An aeolian or a glaciolacustrine record? A case study from Mieļupīte, Middle Gauja Lowland, northeast Latvia Nartišs, Māris Kalińska-Nartiša, Edyta 2017 http://dx.doi.org/10.1515/logos-2017-0002 http://content.sciendo.com/view/journals/logos/23/1/article-p15.xml https://www.sciendo.com/article/10.1515/logos-2017-0002 en eng Walter de Gruyter GmbH http://creativecommons.org/licenses/by-nc-nd/3.0 Geologos volume 23, issue 1, page 15-28 ISSN 2080-6574 General Earth and Planetary Sciences journal-article 2017 crdegruyter https://doi.org/10.1515/logos-2017-0002 2024-02-05T10:21:02Z Abstract In the Middle Gauja Lowland, northeast Latvia, dunes are distributed over a vast glaciolacustrine plain that formed during the retreat of the Fennoscandian ice sheet. Such a direct contact between aeolian and glaciolacustrine sediments can be used to infer depositional settings and decipher to what extent these sediments bear an aeolian component. Our proxies, although preliminary, reveal a limited range of variation in grain-size parameters, a significant presence of quartz grains with silica precipitation and matt-surface grains of various rounding degrees and massive structure combined with horizontal lamination. These are indicative of periglacial-aeolian depositional conditions in the foreland of the Linkuva ice-marginal zone. Sedimentary characteristics do not match a single luminescence date of 9.2±0.6 ka, which significantly postdates the minimum age of the Linkuva ice-marginal zone with 10 Be ages between 15.4 and 12.0 ka. Whether deposition started directly after drainage of the Middle Gauja ice-dammed lake or if there is a gap of 2.8–6.2 ka is a matter of debate; only future studies at higher OSL resolution could resolve this. Article in Journal/Newspaper Fennoscandian Ice Sheet De Gruyter Dammed Lake ENVELOPE(-68.258,-68.258,68.496,68.496) Geologos 23 1 15 28 |
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English |
topic |
General Earth and Planetary Sciences |
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General Earth and Planetary Sciences Nartišs, Māris Kalińska-Nartiša, Edyta An aeolian or a glaciolacustrine record? A case study from Mieļupīte, Middle Gauja Lowland, northeast Latvia |
topic_facet |
General Earth and Planetary Sciences |
description |
Abstract In the Middle Gauja Lowland, northeast Latvia, dunes are distributed over a vast glaciolacustrine plain that formed during the retreat of the Fennoscandian ice sheet. Such a direct contact between aeolian and glaciolacustrine sediments can be used to infer depositional settings and decipher to what extent these sediments bear an aeolian component. Our proxies, although preliminary, reveal a limited range of variation in grain-size parameters, a significant presence of quartz grains with silica precipitation and matt-surface grains of various rounding degrees and massive structure combined with horizontal lamination. These are indicative of periglacial-aeolian depositional conditions in the foreland of the Linkuva ice-marginal zone. Sedimentary characteristics do not match a single luminescence date of 9.2±0.6 ka, which significantly postdates the minimum age of the Linkuva ice-marginal zone with 10 Be ages between 15.4 and 12.0 ka. Whether deposition started directly after drainage of the Middle Gauja ice-dammed lake or if there is a gap of 2.8–6.2 ka is a matter of debate; only future studies at higher OSL resolution could resolve this. |
format |
Article in Journal/Newspaper |
author |
Nartišs, Māris Kalińska-Nartiša, Edyta |
author_facet |
Nartišs, Māris Kalińska-Nartiša, Edyta |
author_sort |
Nartišs, Māris |
title |
An aeolian or a glaciolacustrine record? A case study from Mieļupīte, Middle Gauja Lowland, northeast Latvia |
title_short |
An aeolian or a glaciolacustrine record? A case study from Mieļupīte, Middle Gauja Lowland, northeast Latvia |
title_full |
An aeolian or a glaciolacustrine record? A case study from Mieļupīte, Middle Gauja Lowland, northeast Latvia |
title_fullStr |
An aeolian or a glaciolacustrine record? A case study from Mieļupīte, Middle Gauja Lowland, northeast Latvia |
title_full_unstemmed |
An aeolian or a glaciolacustrine record? A case study from Mieļupīte, Middle Gauja Lowland, northeast Latvia |
title_sort |
aeolian or a glaciolacustrine record? a case study from mieļupīte, middle gauja lowland, northeast latvia |
publisher |
Walter de Gruyter GmbH |
publishDate |
2017 |
url |
http://dx.doi.org/10.1515/logos-2017-0002 http://content.sciendo.com/view/journals/logos/23/1/article-p15.xml https://www.sciendo.com/article/10.1515/logos-2017-0002 |
long_lat |
ENVELOPE(-68.258,-68.258,68.496,68.496) |
geographic |
Dammed Lake |
geographic_facet |
Dammed Lake |
genre |
Fennoscandian Ice Sheet |
genre_facet |
Fennoscandian Ice Sheet |
op_source |
Geologos volume 23, issue 1, page 15-28 ISSN 2080-6574 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/3.0 |
op_doi |
https://doi.org/10.1515/logos-2017-0002 |
container_title |
Geologos |
container_volume |
23 |
container_issue |
1 |
container_start_page |
15 |
op_container_end_page |
28 |
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1792499806928633856 |