Transverse, supraglacially derived crevasse infillings in a Pleistocene ice-sheet margin zone (eastern Poland): Genesis and sedimentary record

Godlewska, Anna; Terpiłowski, Sławomir

doi:10.1016/j.geomorph.2012.04.002

Cited by 14 publications

(13 citation statements)

References 48 publications

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“…In our model it is not clear whether the sand bodies developing into the lakes should be considered as fans or deltas. Deltaic facies have commonly been reported from kames (Alexanderson et al 2002;Delaney 2002;Godlewska and Terpiłowski 2012). We are, however, unable to distinguish deltaic topsets or foresets, moreover the inclination of beds seemed too high (up to 10°) for deltaic bottomsets.…”

Section: Genetic Model Of the Glaciolacustrine Kamescontrasting

confidence: 61%

Sedimentary record of the younger saalian ice margin stagnation in eastern poland: development of a regular pattern of glaciolacustrine kames

Gruszka

Terpiłowski

2015

Geografiska Annaler: Series A, Physical Geography

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of the younger Saalian ice margin stagnation in eastern Poland: development of a regular pattern of glaciolacustrine kames. Geografiska Annaler: Series A, Physical Geography, ABSTRACT. Glaciolacustrine kames in the Bielsk Podlaski area (eastern Poland) exhibit a unique regular pattern. Three representative morphological kame types were chosen for detailed sedimentological analyses, specifically: isolated, isometric mounds; isolated, elongated hills; and branching ridges. All types comprised fine-grained sandy and sandy/ silty deposits. Lithofacies analysis resulted in the distinction of several lithofacies associations. Associations dominated by medium-or large-scale, massive or horizontally laminated sands are interpreted as proximal subaqueous fans; associations dominated by medium-or small-scale lithofacies of ripple-drift cross-laminated sand are interpreted as distal subaqueous fans; and those dominated by sandy/silty, silty or silty/clayey lithofacies with horizontal lamination are interpreted as lake bottomsets. Rates of sediment accumulation appear to have been fast, resulting in syndepositional and metadepositional deformation structures of two types: water-escape structures, and slumps on subaqueous slopes. After the ice-walled lake basins filled with sediment, glaciofluvial erosion and deposition alternated, resulting in erosional channels of up to 1 m deep, later filled with gravel or gravely sand. The results indicate that kames developed in a supraglacial environment within a topography of ice-cored moraines containing ice-walled lakes that persisted due to the presence of permafrost. Pauses during retreat of the ice walls resulted in ice-contact deformations at the edges of the kames. Kame formation is therefore consistent with a continental climate and this may explain the increased abundance of this type of kame system in Eastern Europe.

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Section: Genetic Model Of the Glaciolacustrine Kamescontrasting

confidence: 61%

Sedimentary record of the younger saalian ice margin stagnation in eastern poland: development of a regular pattern of glaciolacustrine kames

Gruszka

Terpiłowski

2015

Geografiska Annaler: Series A, Physical Geography

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“…For this purpose the author's original materials were analysed, i.e. the monograph (Godlewska, 2014a), as well as the scientific papers and conference abstracts (Godlewska, 2007(Godlewska, , 2008aGodlewska & Terpiłowski, 2009a, b;Terpiłowski et al, 2009;Godlewska & Terpiłowski, 2012;Godlewska, 2012Godlewska, , 2014aGodlewska, , b, 2015. Other materials concerning the study area were also useful in the evaluation.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of the geotourism potential of selected geological sites in the eastern part of the borderland between the Siedlce Upland and Łuków Plain

Orłowska

2017

geotour

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Evaluating the geotourism potential of geological objects is now one of the main directions of geotourism development in Poland. So far, these have been usually carried out for famous and interesting objects, which are situated in physical-geographical regions of great morphological-geological values and are places of high intensity tourism. However, recently more and more attempts have been made to evaluate geotourism potential of geological objects situated in the areas considered unattractive to tourists. This paper reports the results of such an attempt, which has been made in the eastern part of the borderland between two physical-geographical regions of low-intensity tourism, i.e. the Siedlce Upland and Łuków Plain. To evaluate the tourism potential of geological objects, the method of geosite evaluation has been used. The results allowed the author to distinguish the objects of high and unique scientific values, which may be proposed as geosites and a geotourist trail in the study area.

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“…the toe of the lake slope (Gilbert 1975) of a prograding subaqueous fan or delta, commonly documented in Pleistocene glacial deposits (e.g. Winsemann et al 2004;Błaszkiewicz & Gruszka 2005;Godlewska & Terpiłowski 2012;Gruszka & Terpiłowski 2015).…”

Section: Interpretation Of Lithofaciesmentioning

confidence: 99%

“…Both of these lithofacies associations are interpreted to be deposited on a lake slope (Gilbert 1975) in a subaqueous fan or delta environment (cf. Winsemann et al 2004;Godlewska & Terpiłowski 2012).…”

Section: Interpretation Of Lithofaciesmentioning

confidence: 99%

Topography and melting dynamics of ice‐cored ridges: evidence from the geometry, kinematics and sedimentary evolution of collapse structures within kame deposits, eastern Poland

Włodarski

Orłowska

2019

Boreas

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In earlier studies, the topography and melting dynamics of ice‐cored ridges within marginal zones of the Pleistocene ice sheets were routinely reconstructed based only on conceptual and qualitative models supported by geomorphological, sedimentological and palaeogeographical studies. Here, a novel approach based on detailed structural analysis of two collapse structures affecting Pleistocene kame deposits is presented. The high regularity of the geometry of synclines and related strain fields as well as the patterns of subsidence of the folded strata are all interpreted as evidence of topography of ice‐cored ridges and their melting dynamics. The topography is described in terms of elongation, orientation and cross‐sectional shape of ice‐cored ridges. In turn, the melting dynamics are assessed based on a semi‐quantitative model of different relative rates of backwasting and downwasting. The topography of ice‐cored ridges, derived independently from the morphology of the related supraglacial landforms, is interpreted as an effect of ablation controlled by debris bands within parent ice. The reconstructed ice‐cored ridges are considered to represent the second‐order topographic features within a wide ice‐cored depression. The sedimentary evolution of collapse structures expressed as migration of their hinges/depocentres provides new semi‐quantitative insight into melting dynamics of ice showing the predominance of backwasting over downwasting. This evolution concerns the final stage of de‐icing, which was probably preceded by lowering of the ice‐cored topography and progressive formation of the ice‐cored ridges.

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Transverse, supraglacially derived crevasse infillings in a Pleistocene ice-sheet margin zone (eastern Poland): Genesis and sedimentary record

Cited by 14 publications

References 48 publications

Sedimentary record of the younger saalian ice margin stagnation in eastern poland: development of a regular pattern of glaciolacustrine kames

Sedimentary record of the younger saalian ice margin stagnation in eastern poland: development of a regular pattern of glaciolacustrine kames

Evaluation of the geotourism potential of selected geological sites in the eastern part of the borderland between the Siedlce Upland and Łuków Plain

Topography and melting dynamics of ice‐cored ridges: evidence from the geometry, kinematics and sedimentary evolution of collapse structures within kame deposits, eastern Poland

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