Aeolian sand provenance variability during the Last Glacial
Period in the Moravian Sahara dune field, Czechia

J 2025

Aeolian sand provenance variability during the Last Glacial Period in the Moravian Sahara dune field, Czechia

HOLUŠA, Jakub a Martin KADLEC

Základní údaje

Originální název

Aeolian sand provenance variability during the Last Glacial Period in the Moravian Sahara dune field, Czechia

Autoři

HOLUŠA, Jakub a Martin KADLEC

Vydání

GEOMORPHOLOGY, AMSTERDAM, ELSEVIER, 2025, 0169-555X

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10508 Physical geography

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 3.300 v roce 2024

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/25:00143343

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Geochemistry; Cold-climate dunes; Source sediment; XRF

Štítky

14315030, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 15. 1. 2026 12:22, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

The Moravian Sahara dune field represents a unique environment, as it formed episodically during the Last Glacial Period and reflects a change in atmospheric circulation. Nevertheless, a precise evaluation of the sources of aeolian sand has not yet been performed despite extensive past research. Here, we present a study comparing element concentrations and ratios (specifically, Fe/Si, Ti/Si, and V/Si) measured via X-ray fluorescence (XRF) spectroscopy among samples collected from presumed source sediments and aeolian sand from the dunes. Additionally, we verified the correctness of the definition of boundaries between the aeolian units/dune generations through cluster analysis of element concentrations in the drilled cores. This relatively quick method has been shown to be a helpful proxy for defining individual dune generations. The element ratios revealed that the aeolian sand that formed the Moravian Sahara dunes originated from two primary sources, fluvial sediments deposited by the Morava paleo-river and the streams draining the Central Moravian Carpathians, whose contributions varied over time and reflected the changes in prevailing winds. The contribution of the first source is, however, overestimated, which probably reflects that the Morava palaeo-river already transported sediments from the Central Moravian Carpathians before reaching the study area, recycling of old aeolian sand and contamination of dune material in one particular place by water used during firefighting in 2012, which was pumped from the Morava river.

Návaznosti

MUNI/A/1648/2024, interní kód MU

Název: Dynamika přírodního a sociálního prostředí v geografické perspektivě

Investor: Masarykova univerzita, Dynamika přírodního a sociálního prostředí v geografické perspektivě

VAN 2025, interní kód MU

Název: Český antarktický výzkumný program 2025-2027

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Český antarktický výzkumný program 2025-2027, Výzkum v oblasti Antarktidy

Citovat

HOLUŠA, Jakub a Martin KADLEC. Aeolian sand provenance variability during the Last Glacial Period in the Moravian Sahara dune field, Czechia. GEOMORPHOLOGY. AMSTERDAM: ELSEVIER, 2025, roč. 491, December, s. 1-15. ISSN 0169-555X. Dostupné z: https://doi.org/10.1016/j.geomorph.2025.110032.

@article{2547341,
   author = {Holuša, Jakub and Kadlec, Martin},
   article_location = {AMSTERDAM},
   article_number = {December},
   doi = {https://doi.org/10.1016/j.geomorph.2025.110032},
   keywords = {Geochemistry; Cold-climate dunes; Source sediment; XRF},
   language = {eng},
   issn = {0169-555X},
   journal = {GEOMORPHOLOGY},
   title = {Aeolian sand provenance variability during the Last Glacial Period in the Moravian Sahara dune field, Czechia},
   url = {https://www.sciencedirect.com/science/article/pii/S0169555X25004428},
   volume = {491},
   year = {2025}
}

TY  - JOUR
ID  - 2547341
AU  - Holuša, Jakub - Kadlec, Martin
PY  - 2025
TI  - Aeolian sand provenance variability during the Last Glacial Period in the Moravian Sahara dune field, Czechia
JF  - GEOMORPHOLOGY
VL  - 491
IS  - December
SP  - 1-15
EP  - 1-15
PB  - ELSEVIER
SN  - 0169555X
KW  - Geochemistry
KW  - Cold-climate dunes
KW  - Source sediment
KW  - XRF
UR  - https://www.sciencedirect.com/science/article/pii/S0169555X25004428
N2  - The Moravian Sahara dune field represents a unique environment, as it formed episodically during the Last Glacial Period and reflects a change in atmospheric circulation. Nevertheless, a precise evaluation of the sources of aeolian sand has not yet been performed despite extensive past research. Here, we present a study comparing element concentrations and ratios (specifically, Fe/Si, Ti/Si, and V/Si) measured via X-ray fluorescence (XRF) spectroscopy among samples collected from presumed source sediments and aeolian sand from the dunes. Additionally, we verified the correctness of the definition of boundaries between the aeolian units/dune generations through cluster analysis of element concentrations in the drilled cores. This relatively quick method has been shown to be a helpful proxy for defining individual dune generations. The element ratios revealed that the aeolian sand that formed the Moravian Sahara dunes originated from two primary sources, fluvial sediments deposited by the Morava paleo-river and the streams draining the Central Moravian Carpathians, whose contributions varied over time and reflected the changes in prevailing winds. The contribution of the first source is, however, overestimated, which probably reflects that the Morava palaeo-river already transported sediments from the Central Moravian Carpathians before reaching the study area, recycling of old aeolian sand and contamination of dune material in one particular place by water used during firefighting in 2012, which was pumped from the Morava river.
ER  -

HOLUŠA, Jakub a Martin KADLEC. Aeolian sand provenance variability during the Last Glacial Period in the Moravian Sahara dune field, Czechia. \textit{GEOMORPHOLOGY}. AMSTERDAM: ELSEVIER, 2025, roč.~491, December, s.~1-15. ISSN~0169-555X. Dostupné z: https://doi.org/10.1016/j.geomorph.2025.110032.

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