Late Weichselian glacier outburst floods in North-Eastern Poland: Landform evidence and palaeohydraulic significance

Weckwerth, Piotr; Wysota, Wojciech; Piotrowski, Jan A.; Adamczyk, Aleksander; Krawiec, Arkadiusz; Dąbrowski, Michał

doi:10.1016/j.earscirev.2019.05.006

Cited by 45 publications

(33 citation statements)

References 74 publications

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“…The lake basin itself is located in the Szeszupa Depression, which was formed as a consequence of dead ice melting in the late glacial (Smolska, 1996). The ice sheet had already retreated from the Szeszupa Depression between 17.9 and 14.4cal ka BP (Dzierżek and Zreda, 2007; Weckwerth et al, 2019) and, according to pollen stratigraphy, lacustrine sedimentation had begun in the Allerød (Kupryjanowicz, M., unpublished data). Lacustrine sedimentation started at sites investigated nearby during the same period, such as Lake Linówek (3 km to the southwest) at ca.…”

Section: Introductionmentioning

confidence: 99%

Varves and mass-movement deposits record distinctly different sedimentation dynamics since the late glacial (Lake Szurpiły, northeastern Poland)

et al. 2019

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The sedimentological and geochemical characteristics of sediments from Lake Szurpiły (northeastern Poland) can be used as a record of mass movement and climate dynamics since the Allerød. Late-glacial sediments suggest enhanced runoff conditions in the catchment after the retreat of the Scandinavian Ice Sheet, while Holocene varved sediments are interrupted by mass-movement deposits (MMDs). We identified 85 thin (<10 cm) MMDs (type 1) that consist of autochthonous material and frequently occur during the Atlantic period. Mobilization of littoral zone and slope sediments caused redeposition in the deepest part of the lake and was likely related to climatic conditions. In contrasting, one sedimentary unit (>1-m-thick MMD type 2) consists of auto- and allochthonous material and represents multistage processes, including erosion and deformation of underlying varved sediments, rapid deposition of clastic material, and redeposition of previously eroded varved sediments. Seismic activity or permafrost degradation was responsible for the deposition of MMD type 2. Furthermore, varve-thickness variability suggests Gleissberg and Suess solar cycles before 850 BC, when human impact was limited. Additionally, 22 and 11 yr sunspot cycles are recognized in light/dark laminae-thickness ratios and reflect influences of solar irradiance on lacustrine productivity.

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Section: Introductionmentioning

confidence: 99%

Varves and mass-movement deposits record distinctly different sedimentation dynamics since the late glacial (Lake Szurpiły, northeastern Poland)

et al. 2019

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“…Ochyra and Tomaszewicz 1982 ), but was found only at one site near Błaskowizna on 17 July 2017. A very wet mire on thick peat deposits is developed there in a depression, surrounded by parallel, arched and prominent ridges of moraines (glacial curvilineations created by catastrophic megafloods during last glaciation; Weckwerth et al 2019 ). The vegetation represents Pinus - Betula swamp forests, peatbogs and fens, with many relic species (most notable: Eriophorum gracile W. D. J. Koch ex Roth, Baeothryon alpinum T. V. Egorova, Pseudocalliergon trifarium (F. Weber & D. Mohr) Loeske and Scorpidium scorpioides (Hedw.)…”

Section: Methodsmentioning

confidence: 99%

Welcome to the Czech Republic again! Rare northern mosses Calliergon megalophyllum and Drepanocladus sordidus (Amblystegiaceae) in South Bohemia in light of their European distribution and habitat preferences

Krajewski

Adamec

Saługa

et al. 2020

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Two aquatic moss species, Calliergon megalophyllum and Drepanocladus sordidus (Amblystegiaceae, Bryophyta), which had been considered extinct in the Czech Republic, were found in the Třeboň Basin, South Bohemia, in 2016–2017. They co-occurred in extensive reed- and sedge-dominated fen pools with humic water on the shore of an old fishpond and the former species was also discovered in a small humic pool in an old shallow sand-pit. The new Czech sites of these rare boreal species represent one of the southernmost known outposts within their entire European range. Previously, the two species were only known from single records in the Czech Republic from the late 19th and early 20th centuries. To confirm our morphological observations, we used phylogenetic analyses of DNA sequence variation in four chloroplast loci (atpB-rbcL, trnL-trnF, rpl16, trnG) and one nuclear region, the internal transcribed spacers of ribosomal DNA (ITS). We found (1) monophyly of all Calliergon megalophyllum specimens tested; (2) based on chloroplast DNA sequences, monophyly among all Drepanocladus sordidus specimens and representatives of Pseudocalliergon turgescens and P. lycopodioides moss species; (3) based on nuclear ITS sequences, monophyly of all original D. sordidus specimens. These results corroborate morphological studies and thus confirm the existence of natural sites for the studied moss species in the Třeboň Basin, South Bohemia, Czech Republic.

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“…If meltwater is stored in an ice dammed lake, it may be released in a catastrophic event which has the potential to scour the topography, erode and transport large volumes of sediments far offshore. Examples include; breaching of the land connection between present-day France and Great Britain, through the English Channel, sculpting large sandur areas in NE Poland and breaching a topographic high in Germany (Gupta et al, 2017;Meinsen et al, 2011;Weckwerth et al, 2019). An even more extreme example can be found between Labrador and Greenland in the Labrador Sea; submarine channels originate at the shelf edge and extend all the way to the abyssal plain in water depths of 3 -4 km.…”

Section: Extreme Scenariosmentioning

confidence: 99%

A conceptual model for glaciogenic reservoirs: From landsystems to reservoir architecture

Kurjański

Rea

Spagnolo

et al. 2020

Marine and Petroleum Geology

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Late Weichselian glacier outburst floods in North-Eastern Poland: Landform evidence and palaeohydraulic significance

Cited by 45 publications

References 74 publications

Varves and mass-movement deposits record distinctly different sedimentation dynamics since the late glacial (Lake Szurpiły, northeastern Poland)

Varves and mass-movement deposits record distinctly different sedimentation dynamics since the late glacial (Lake Szurpiły, northeastern Poland)

Welcome to the Czech Republic again! Rare northern mosses Calliergon megalophyllum and Drepanocladus sordidus (Amblystegiaceae) in South Bohemia in light of their European distribution and habitat preferences

A conceptual model for glaciogenic reservoirs: From landsystems to reservoir architecture

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