Fluvial vs. Aeolian origin of Pleistocene/Holocene dunes (South
Moravia, Czech Republic)

D 2017

Fluvial vs. Aeolian origin of Pleistocene/Holocene dunes (South Moravia, Czech Republic)

NEHYBA, Slavomír, Marie DVOŘÁKOVÁ a Jan PETŘÍK

Základní údaje

Originální název

Fluvial vs. Aeolian origin of Pleistocene/Holocene dunes (South Moravia, Czech Republic)

Název česky

Fluviální nebo eolický původ pleistocenních až holocenních dun na lokalitě Pohansko

Autoři

NEHYBA, Slavomír, Marie DVOŘÁKOVÁ a Jan PETŘÍK

Vydání

Toulose, Francie, s. 645-645, 2017

Nakladatel

International Association of Sedimentologists

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

10500 1.5. Earth and related environmental sciences

Stát vydavatele

Francie

Utajení

není předmětem státního či obchodního tajemství

Forma vydání

elektronická verze "online"

Organizační jednotka

Přírodovědecká fakulta

ISBN

2-907205-78-1

ISSN

Štítky

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 26. 4. 2018 15:03, Ing. Nicole Zrilić

Anotace

V originále

The archaeological locality Pohansko (South Moravia, Czech Republic) represents evidence of a significant Early Medieval centre in the core area of the Great Moravian Empire, 9th century AD (interpreted as a munitio, emporium and palatium of the Moravian Early Medieval rulers). The site lies at an altitude of about 155 to 157 m a. s. l. and is situated within an extended flood plain near the confluence of the Morava and Dyje rivers filled with Holocene flood loams. The beginning of flood loam sedimentation is estimated to be about 3000-4000 BP at the initial phase of the Subboreal period. The marginal slopes of the valley protrude some 5 m above the flood plain and are composed of Middle Pleistocene (Riss) fluvial sandy gravels with Late Würmian dunes. In some places these dunes also protrude from under Holocene flood loams in the flood plain; one of them was used to build the Early Medieval fortified site. Originally the sand dunes had a height of between 6 and 8 m, but recently because of younger flood loam deposits, they are only 1-2 m above the flood plain. Some lower dunes were even buried under the flood loams. The bedrock of the Quaternary deposits in the area of Pohansko is represented by grey clays of the Pannonian Age (8.5-11.5 Ma) of the Vienna Basin. The yellowish to brownish fine to medium grained sands forming the dunes are traditionally interpreted as eolian in origin formed by wind-blown sands. Artificial newly outcropped profiles produced during the archaeological research were subjected to detailed lithofacies analyses. Morphoscopy of quartz grains were studied in selected samples. Age interpretations are based on optically stimulated luminescence (OSL) analyses. Based on these results, fluvial units predominate in the sedimentary succession and the dunes are interpreted as levees and point-bars. Aeolian origin of some part (?) of Pleistocene/Holocene dunes is therefore questioned. The dune could have originated in the Dryas III (Late Würm), i.e. 12 000-17000 BP and partly resedimented in the Holocene.

Návaznosti

GA16-15678S, projekt VaV

Název: Vývoj interakce přírodního prostředí a subsistenční strategie raně středověké společnosti

Investor: Grantová agentura ČR, Vývoj interakce životního prostředí a subsistenční strategie raně středověké společnosti

Citovat

NEHYBA, Slavomír, Marie DVOŘÁKOVÁ a Jan PETŘÍK. Fluvial vs. Aeolian origin of Pleistocene/Holocene dunes (South Moravia, Czech Republic). Online. Toulose, Francie: International Association of Sedimentologists, 2017, s. 645. ISBN 2-907205-78-1.

@inproceedings{1390759,
   author = {Nehyba, Slavomír and Dvořáková, Marie and Petřík, Jan},
   address = {Toulose, Francie},
   howpublished = {elektronická verze "online"},
   language = {eng},
   location = {Toulose, Francie},
   isbn = {2-907205-78-1},
   note = {Nepřenášet do RIV, výsledek má jen 1 stranu textu, dle M17+ musí mít 2. Není na WoS ani Scopus.},
   pages = {645-645},
   publisher = {International Association of Sedimentologists},
   title = {Fluvial vs. Aeolian origin of Pleistocene/Holocene dunes (South Moravia, Czech Republic)},
   year = {2017}
}

TY  - JOUR
ID  - 1390759
AU  - Nehyba, Slavomír - Dvořáková, Marie - Petřík, Jan
PY  - 2017
TI  - Fluvial vs. Aeolian origin of Pleistocene/Holocene dunes (South Moravia, Czech Republic)
PB  - International Association of Sedimentologists
CY  - Toulose, Francie
SN  - 2907205781
N1  - Nepřenášet do RIV, výsledek má jen 1 stranu textu, dle M17+ musí mít 2. Není na WoS ani Scopus.
N2  - The archaeological locality Pohansko (South Moravia, Czech Republic) represents evidence of a significant Early Medieval centre in the core area of the Great Moravian Empire, 9th century AD (interpreted as a munitio, emporium and palatium of the Moravian Early Medieval rulers). The site lies at an altitude of about 155 to 157 m a. s. l. and is situated within an extended flood plain near the confluence of the Morava and Dyje rivers filled with Holocene flood loams. The beginning of flood loam sedimentation is estimated to be about 3000-4000 BP at the initial phase of the Subboreal period. The marginal slopes of the valley protrude some 5 m above the flood plain and are composed of Middle Pleistocene (Riss) fluvial sandy gravels with Late Würmian dunes. In some places these dunes also protrude from under Holocene flood loams in the flood plain; one of them was used to build the Early Medieval fortified site. Originally the sand dunes had a height of between 6 and 8 m, but recently because of younger flood loam deposits, they are only 1-2 m above the flood plain. Some lower dunes were even buried under the flood loams. The bedrock of the Quaternary deposits in the area of Pohansko is represented by grey clays of the Pannonian Age (8.5-11.5 Ma) of the Vienna Basin. The yellowish to brownish fine to medium grained sands forming the dunes are traditionally interpreted as eolian in origin formed by wind-blown sands. Artificial newly outcropped profiles produced during the archaeological research were subjected to detailed lithofacies analyses. Morphoscopy of quartz grains were studied in selected samples. Age interpretations are based on optically stimulated luminescence (OSL) analyses. Based on these results, fluvial units predominate in the sedimentary succession and the dunes are interpreted as levees and point-bars. Aeolian origin of some part (?) of Pleistocene/Holocene dunes is therefore questioned. The dune could have originated in the Dryas III (Late Würm), i.e. 12 000-17000 BP and partly resedimented in the Holocene.
ER  -

NEHYBA, Slavomír, Marie DVOŘÁKOVÁ a Jan PETŘÍK. \textit{Fluvial vs. Aeolian origin of Pleistocene/Holocene dunes (South Moravia, Czech Republic)}. Online. Toulose, Francie: International Association of Sedimentologists, 2017, s.~645. ISBN~2-907205-78-1.

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