TL SIGNATURES OF QUARTZ GRAINS FROM NORTHWESTERN EUROPEAN LOESS SEQUENCES
International audience In the present study, we examine the TL signature of quartz grains (40-50 microns) from loess accumulated during the Weichselian (MIS 2-4) and Saalian (MIS 6) glaciations in Northwestern Europe (Belgium, Netherlands, Germany, Northwestern France, Channel Islands). The quartz T...
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ftunivlille:oai:HAL:hal-04428610v1 2024-06-23T07:53:47+00:00 TL SIGNATURES OF QUARTZ GRAINS FROM NORTHWESTERN EUROPEAN LOESS SEQUENCES Balescu, Sanda Dupuis, Christian Haesaerts, Paul Quinif, Yves Histoire, Archéologie et Littérature des Mondes Anciens - UMR 8164 (HALMA) Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture (MC) Université de Mons / University of Mons (UMONS) Institut Royal des Sciences Naturelles de Belgique = Royal Belgian Institute of Natural Sciences (IRSNB / RBINS) National Academy of Sciences of the Republic of Armenia, Institute of Geological Sciences Yerevan, Armenia 2019-09-15 https://hal.science/hal-04428610 en eng HAL CCSD hal-04428610 https://hal.science/hal-04428610 International Symposium on "Loess Deposits as Archives of Environmental Change in the Past" https://hal.science/hal-04428610 International Symposium on "Loess Deposits as Archives of Environmental Change in the Past", Sep 2019, Yerevan, Armenia Northwestern European loess quartz TL signature heavy minerals loess provenance Weichselian Saalian [SDE]Environmental Sciences info:eu-repo/semantics/conferenceObject Conference poster 2019 ftunivlille 2024-06-10T14:34:02Z International audience In the present study, we examine the TL signature of quartz grains (40-50 microns) from loess accumulated during the Weichselian (MIS 2-4) and Saalian (MIS 6) glaciations in Northwestern Europe (Belgium, Netherlands, Germany, Northwestern France, Channel Islands). The quartz TL signature is used herein for characterizing the loess deposits and for tracking dust provenance. Six groups of loess with distinct quartz TL signatures have been identified. In parallel, a heavy mineral analysis of the same loess deposits has been performed; the green amphibole (GA) is used as an index mineral. The spatial and temporal variability of the quartz TL signature and GA content suggest multiple dust sources and temporal provenance changes. Furthermore, the same combined quartz TL signature and GA analyses were applied to potential source materials (alluvial and estuarine sediments from major river systems as the Seine, the Somme and the Rhine; glacial and proglacial sediments related to the Scandinavian ice sheet). Our results indicate that the Northwestern European loess derive from two major proximal sources, following dominantly northwesterly to westerly wind tracks: (1) the fluvial sediments from the braided alluvial plains and (2) the fluvio-marine material exposed on the emerged continental shelves of the English Channel and the southern North Sea Basin. By contrast, a distal glacial source from the outwash plains of the Scandinavian ice sheet seems to be excluded. Overall, the results of the present study suggest that the combined quartz TL signal and GA analyses are likely promising diagnostic methods to identify sources in loess studies. Conference Object Ice Sheet LillOA (HAL Lille Open Archive, Université de Lille) |
institution |
Open Polar |
collection |
LillOA (HAL Lille Open Archive, Université de Lille) |
op_collection_id |
ftunivlille |
language |
English |
topic |
Northwestern European loess quartz TL signature heavy minerals loess provenance Weichselian Saalian [SDE]Environmental Sciences |
spellingShingle |
Northwestern European loess quartz TL signature heavy minerals loess provenance Weichselian Saalian [SDE]Environmental Sciences Balescu, Sanda Dupuis, Christian Haesaerts, Paul Quinif, Yves TL SIGNATURES OF QUARTZ GRAINS FROM NORTHWESTERN EUROPEAN LOESS SEQUENCES |
topic_facet |
Northwestern European loess quartz TL signature heavy minerals loess provenance Weichselian Saalian [SDE]Environmental Sciences |
description |
International audience In the present study, we examine the TL signature of quartz grains (40-50 microns) from loess accumulated during the Weichselian (MIS 2-4) and Saalian (MIS 6) glaciations in Northwestern Europe (Belgium, Netherlands, Germany, Northwestern France, Channel Islands). The quartz TL signature is used herein for characterizing the loess deposits and for tracking dust provenance. Six groups of loess with distinct quartz TL signatures have been identified. In parallel, a heavy mineral analysis of the same loess deposits has been performed; the green amphibole (GA) is used as an index mineral. The spatial and temporal variability of the quartz TL signature and GA content suggest multiple dust sources and temporal provenance changes. Furthermore, the same combined quartz TL signature and GA analyses were applied to potential source materials (alluvial and estuarine sediments from major river systems as the Seine, the Somme and the Rhine; glacial and proglacial sediments related to the Scandinavian ice sheet). Our results indicate that the Northwestern European loess derive from two major proximal sources, following dominantly northwesterly to westerly wind tracks: (1) the fluvial sediments from the braided alluvial plains and (2) the fluvio-marine material exposed on the emerged continental shelves of the English Channel and the southern North Sea Basin. By contrast, a distal glacial source from the outwash plains of the Scandinavian ice sheet seems to be excluded. Overall, the results of the present study suggest that the combined quartz TL signal and GA analyses are likely promising diagnostic methods to identify sources in loess studies. |
author2 |
Histoire, Archéologie et Littérature des Mondes Anciens - UMR 8164 (HALMA) Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture (MC) Université de Mons / University of Mons (UMONS) Institut Royal des Sciences Naturelles de Belgique = Royal Belgian Institute of Natural Sciences (IRSNB / RBINS) National Academy of Sciences of the Republic of Armenia, Institute of Geological Sciences |
format |
Conference Object |
author |
Balescu, Sanda Dupuis, Christian Haesaerts, Paul Quinif, Yves |
author_facet |
Balescu, Sanda Dupuis, Christian Haesaerts, Paul Quinif, Yves |
author_sort |
Balescu, Sanda |
title |
TL SIGNATURES OF QUARTZ GRAINS FROM NORTHWESTERN EUROPEAN LOESS SEQUENCES |
title_short |
TL SIGNATURES OF QUARTZ GRAINS FROM NORTHWESTERN EUROPEAN LOESS SEQUENCES |
title_full |
TL SIGNATURES OF QUARTZ GRAINS FROM NORTHWESTERN EUROPEAN LOESS SEQUENCES |
title_fullStr |
TL SIGNATURES OF QUARTZ GRAINS FROM NORTHWESTERN EUROPEAN LOESS SEQUENCES |
title_full_unstemmed |
TL SIGNATURES OF QUARTZ GRAINS FROM NORTHWESTERN EUROPEAN LOESS SEQUENCES |
title_sort |
tl signatures of quartz grains from northwestern european loess sequences |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.science/hal-04428610 |
op_coverage |
Yerevan, Armenia |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
International Symposium on "Loess Deposits as Archives of Environmental Change in the Past" https://hal.science/hal-04428610 International Symposium on "Loess Deposits as Archives of Environmental Change in the Past", Sep 2019, Yerevan, Armenia |
op_relation |
hal-04428610 https://hal.science/hal-04428610 |
_version_ |
1802645616859283456 |