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(Article of periodic en Anglais - 2012)

Document title

Specific erosional and depositional processes in a Pleistocene subglacial tunnel in the Wielkopolska region, Poland

Authors(s) and Affiliation(s)

PISARSKA-JAMROŻY M. (1) ; ZIELIŃSKI T. (1) ;
(1) Inst. of Geology, Adam Mickiewicz Univ., Poznán, POLOGNE

Abstract

The study area is located in the mid-Polish Lowland and is characterized by depositional forms of Weichselian age. The Pleistocene Cieśle succession accumulated in a subglacial tunnel and shows three sedimentological units. The AA. focus on angular and deformed sandy clasts that occur in the second unit. It appears that thermal erosion, short transport in a sediment-laden current and sudden sedimentation were responsible for the oversized sandy clasts that occur in the gravel glaciofluvial deposits. The deposits are characterized by large-scale erosional scours, massive structure, and fluid-escape deformations. This combination of features can be used as a key tool for the interpretation of hyperconcentrated-flow conditions beneath Pleistocene ice sheets

Source

Article of periodic

published at : Geografiska annaler. Series A. Physical geography / ISSN 0435-3676 / CODEN GAPGAP

Editor : Svenska sällskapet för antropologi och geografi, Stockholm - SUEDE (1965)

Millesime : 2012, vol. 94, no3 [pp. 429-443]

Bibliographic references : 3 p.

Collation : 10 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 2704 A

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1111/j.1468-0459.2012.00466.x

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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