Millennial-timescale climate change over the last 800 kyrs evidenced by magnetic, colorimetric and ATR-FTIR data from the Suhia Kladenetz quarry loess-paleosol sequence (Pleven, Bulgaria)
International audience Eastern European loess-paleosol sequences (LPS) are excellent archives of past climate change. Millennial-timescale climate change is successfully evidenced in loess of the last and penultimate glacial periods. However, study designs with similar or lower sampling resolution s...
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ftinsu:oai:HAL:hal-04076238v1 2024-01-28T10:06:28+01:00 Millennial-timescale climate change over the last 800 kyrs evidenced by magnetic, colorimetric and ATR-FTIR data from the Suhia Kladenetz quarry loess-paleosol sequence (Pleven, Bulgaria) Laag, Christian Lagroix, France Guyodo, Yohan Jordanova, Diana Jordanova, Neli Ishlyamski, Daniel Georgieva, Bozhurka Saulnier-Copard, Ségolène Chapkanski, Stoil Moine, Olivier Antoine, Pierre Institut de Physique du Globe de Paris (IPGP (UMR_7154)) Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) National Institute of Geophysics, Geodesy and Geography (NIGGG) Bulgarian Academy of Sciences (BAS) Laboratoire de géographie physique : Environnements Quaternaires et Actuels (LGP) Université Paris 1 Panthéon-Sorbonne (UP1)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS) ARCHEORIENT - Environnements et sociétés de l'Orient ancien (Archéorient) Université Lumière - Lyon 2 (UL2)-Centre National de la Recherche Scientifique (CNRS) Cologne, Germany 2022-09-11 https://hal.science/hal-04076238 en eng HAL CCSD hal-04076238 https://hal.science/hal-04076238 GeoMinKöln 2022 – the Annual Conference of the Deutsche Mineralogische Gesellschaft (DMG – The German Mineralogical Society) and the Deutsche Geologische Gesellschaft – Geologische Vereinigung (DGGV – The German Geological Society) https://hal.science/hal-04076238 GeoMinKöln 2022 – the Annual Conference of the Deutsche Mineralogische Gesellschaft (DMG – The German Mineralogical Society) and the Deutsche Geologische Gesellschaft – Geologische Vereinigung (DGGV – The German Geological Society), Sep 2022, Cologne, Germany [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy [SHS.GEO]Humanities and Social Sciences/Geography info:eu-repo/semantics/conferenceObject Conference papers 2022 ftinsu 2024-01-10T17:24:14Z International audience Eastern European loess-paleosol sequences (LPS) are excellent archives of past climate change. Millennial-timescale climate change is successfully evidenced in loess of the last and penultimate glacial periods. However, study designs with similar or lower sampling resolution strategies and/or single proxy investigations do not favor their identification for earlier glacials, which are generally scarcer, thinner and characterized by lower sedimentation rates.The high-sampling resolution multi-proxy study presented here demonstrates the first evidence of millennial-timescale climate change for periods older than MIS6 archived in an Eastern European LPS. The Suhia Kladenetz 27 m long profile was sampled continuously at a 2 cm resolution for bulk sediment. Magnetic and colorimetric measurements are performed on all samples. ATR-FTIR data is acquired at the same resolution through loess units and at a 12 cm interval elsewhere, while grain size analyses are conducted continuously at a 12 cm interval. Rock magnetic data and microscopic observations, from our previous work, characterized a 20-cm-thick outcropping tephra in the MIS6 loess unit and identified several cryptotephras. Moreover, a correlative age model demonstrating that the LPS covers the last ~800 kyrs allowed to provide age estimates for the tephra and cryptotephras and thereafter to deduce their likely volcanic sources.The integrated age model in combination with high-resolution colorimetry-based estimates of goethite and hematite concentrations, and clay mineralogy highlight a cyclicity undoubtedly driven by climate change within interstadials/stadials as shown by correlations with the NGRIP δ18O ice core records for the last glacial/interglacial cycle. Conference Object ice core NGRIP Institut national des sciences de l'Univers: HAL-INSU |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy [SHS.GEO]Humanities and Social Sciences/Geography |
spellingShingle |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy [SHS.GEO]Humanities and Social Sciences/Geography Laag, Christian Lagroix, France Guyodo, Yohan Jordanova, Diana Jordanova, Neli Ishlyamski, Daniel Georgieva, Bozhurka Saulnier-Copard, Ségolène Chapkanski, Stoil Moine, Olivier Antoine, Pierre Millennial-timescale climate change over the last 800 kyrs evidenced by magnetic, colorimetric and ATR-FTIR data from the Suhia Kladenetz quarry loess-paleosol sequence (Pleven, Bulgaria) |
topic_facet |
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy [SHS.GEO]Humanities and Social Sciences/Geography |
description |
International audience Eastern European loess-paleosol sequences (LPS) are excellent archives of past climate change. Millennial-timescale climate change is successfully evidenced in loess of the last and penultimate glacial periods. However, study designs with similar or lower sampling resolution strategies and/or single proxy investigations do not favor their identification for earlier glacials, which are generally scarcer, thinner and characterized by lower sedimentation rates.The high-sampling resolution multi-proxy study presented here demonstrates the first evidence of millennial-timescale climate change for periods older than MIS6 archived in an Eastern European LPS. The Suhia Kladenetz 27 m long profile was sampled continuously at a 2 cm resolution for bulk sediment. Magnetic and colorimetric measurements are performed on all samples. ATR-FTIR data is acquired at the same resolution through loess units and at a 12 cm interval elsewhere, while grain size analyses are conducted continuously at a 12 cm interval. Rock magnetic data and microscopic observations, from our previous work, characterized a 20-cm-thick outcropping tephra in the MIS6 loess unit and identified several cryptotephras. Moreover, a correlative age model demonstrating that the LPS covers the last ~800 kyrs allowed to provide age estimates for the tephra and cryptotephras and thereafter to deduce their likely volcanic sources.The integrated age model in combination with high-resolution colorimetry-based estimates of goethite and hematite concentrations, and clay mineralogy highlight a cyclicity undoubtedly driven by climate change within interstadials/stadials as shown by correlations with the NGRIP δ18O ice core records for the last glacial/interglacial cycle. |
author2 |
Institut de Physique du Globe de Paris (IPGP (UMR_7154)) Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) National Institute of Geophysics, Geodesy and Geography (NIGGG) Bulgarian Academy of Sciences (BAS) Laboratoire de géographie physique : Environnements Quaternaires et Actuels (LGP) Université Paris 1 Panthéon-Sorbonne (UP1)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS) ARCHEORIENT - Environnements et sociétés de l'Orient ancien (Archéorient) Université Lumière - Lyon 2 (UL2)-Centre National de la Recherche Scientifique (CNRS) |
format |
Conference Object |
author |
Laag, Christian Lagroix, France Guyodo, Yohan Jordanova, Diana Jordanova, Neli Ishlyamski, Daniel Georgieva, Bozhurka Saulnier-Copard, Ségolène Chapkanski, Stoil Moine, Olivier Antoine, Pierre |
author_facet |
Laag, Christian Lagroix, France Guyodo, Yohan Jordanova, Diana Jordanova, Neli Ishlyamski, Daniel Georgieva, Bozhurka Saulnier-Copard, Ségolène Chapkanski, Stoil Moine, Olivier Antoine, Pierre |
author_sort |
Laag, Christian |
title |
Millennial-timescale climate change over the last 800 kyrs evidenced by magnetic, colorimetric and ATR-FTIR data from the Suhia Kladenetz quarry loess-paleosol sequence (Pleven, Bulgaria) |
title_short |
Millennial-timescale climate change over the last 800 kyrs evidenced by magnetic, colorimetric and ATR-FTIR data from the Suhia Kladenetz quarry loess-paleosol sequence (Pleven, Bulgaria) |
title_full |
Millennial-timescale climate change over the last 800 kyrs evidenced by magnetic, colorimetric and ATR-FTIR data from the Suhia Kladenetz quarry loess-paleosol sequence (Pleven, Bulgaria) |
title_fullStr |
Millennial-timescale climate change over the last 800 kyrs evidenced by magnetic, colorimetric and ATR-FTIR data from the Suhia Kladenetz quarry loess-paleosol sequence (Pleven, Bulgaria) |
title_full_unstemmed |
Millennial-timescale climate change over the last 800 kyrs evidenced by magnetic, colorimetric and ATR-FTIR data from the Suhia Kladenetz quarry loess-paleosol sequence (Pleven, Bulgaria) |
title_sort |
millennial-timescale climate change over the last 800 kyrs evidenced by magnetic, colorimetric and atr-ftir data from the suhia kladenetz quarry loess-paleosol sequence (pleven, bulgaria) |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-04076238 |
op_coverage |
Cologne, Germany |
genre |
ice core NGRIP |
genre_facet |
ice core NGRIP |
op_source |
GeoMinKöln 2022 – the Annual Conference of the Deutsche Mineralogische Gesellschaft (DMG – The German Mineralogical Society) and the Deutsche Geologische Gesellschaft – Geologische Vereinigung (DGGV – The German Geological Society) https://hal.science/hal-04076238 GeoMinKöln 2022 – the Annual Conference of the Deutsche Mineralogische Gesellschaft (DMG – The German Mineralogical Society) and the Deutsche Geologische Gesellschaft – Geologische Vereinigung (DGGV – The German Geological Society), Sep 2022, Cologne, Germany |
op_relation |
hal-04076238 https://hal.science/hal-04076238 |
_version_ |
1789333385885253632 |