An aeolian or a glaciolacustrine record? A case study from Mieļupīte, Middle Gauja Lowland, northeast Latvia
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...
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ftdoajarticles:oai:doaj.org/article:8eaaa6bf87474ab9b5f6e36d8672e356 2023-05-15T16:12:59+02:00 An aeolian or a glaciolacustrine record? A case study from Mieļupīte, Middle Gauja Lowland, northeast Latvia Nartišs Māris Kalińska-Nartiša Edyta 2017-03-01T00:00:00Z https://doi.org/10.1515/logos-2017-0002 https://doaj.org/article/8eaaa6bf87474ab9b5f6e36d8672e356 EN eng Sciendo https://doi.org/10.1515/logos-2017-0002 https://doaj.org/toc/2080-6574 2080-6574 doi:10.1515/logos-2017-0002 https://doaj.org/article/8eaaa6bf87474ab9b5f6e36d8672e356 Geologos, Vol 23, Iss 1, Pp 15-28 (2017) dune ice-dammed lake quartz grains optically stimulated luminescence linkuva ice-marginal zone baltic states Geology QE1-996.5 article 2017 ftdoajarticles https://doi.org/10.1515/logos-2017-0002 2022-12-31T12:58:27Z 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 10Be 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 Directory of Open Access Journals: DOAJ Articles Dammed Lake ENVELOPE(-68.258,-68.258,68.496,68.496) Geologos 23 1 15 28 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
dune ice-dammed lake quartz grains optically stimulated luminescence linkuva ice-marginal zone baltic states Geology QE1-996.5 |
spellingShingle |
dune ice-dammed lake quartz grains optically stimulated luminescence linkuva ice-marginal zone baltic states Geology QE1-996.5 Nartišs Māris Kalińska-Nartiša Edyta An aeolian or a glaciolacustrine record? A case study from Mieļupīte, Middle Gauja Lowland, northeast Latvia |
topic_facet |
dune ice-dammed lake quartz grains optically stimulated luminescence linkuva ice-marginal zone baltic states Geology QE1-996.5 |
description |
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 10Be 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 |
Sciendo |
publishDate |
2017 |
url |
https://doi.org/10.1515/logos-2017-0002 https://doaj.org/article/8eaaa6bf87474ab9b5f6e36d8672e356 |
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, Vol 23, Iss 1, Pp 15-28 (2017) |
op_relation |
https://doi.org/10.1515/logos-2017-0002 https://doaj.org/toc/2080-6574 2080-6574 doi:10.1515/logos-2017-0002 https://doaj.org/article/8eaaa6bf87474ab9b5f6e36d8672e356 |
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 |
_version_ |
1765998602151264256 |