Geophysical, topographic and stratigraphic analyses of perialpine kettles and implications for postglacial mire formation

Götz, Joachim; Salcher, Bernhard; Starnberger, Reinhard; Krisai, Robert

doi:10.1080/04353676.2018.1446638

Cited by 10 publications

(2 citation statements)

References 44 publications

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“…However, the lake per se is younger; lake sediment started to accumulate before ~8000 cal a bp , which coincides with the beginning of the Middle Holocene, corresponding to the Holocene Thermal Maximum (Walker et al, 2012). The reason for this time lag is the process of accumulation of impermeable fine sediments, which, due to the high permeability of glacial and glaciofluvial deposits, is a key factor for kettle lake formation (Götz et al, 2018). We assume that the basin began to fill with water when a sufficient amount of sealing deposits accumulated, which, given the small lake catchment, could have taken several thousand years as the mountain glaciers in the Tatra Mts retreated from lower elevations (~1300 m a.s.l.)…”

Section: Discussionmentioning

confidence: 99%

From oligotrophy to dystrophy: the ontogeny of a humic lake in an extrazonal boreal taiga in Central Europe

Bitušík,

Chamutiová,

Vidhya

et al. 2024

J Quaternary Science

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While humic lakes are common in northern Europe, in central Europe they are rare and our understanding of their ontogeny is insufficient. Here, we present the reconstruction of the development of a humic lake in the Tatra Mountains (Slovakia) over the last 8000 years using chironomids along with diatoms, pollen and non‐pollen palynomorphs. The compositional changes in aquatic proxies suggest three developmental stages. Since its formation the lake has been oligotrophic (phase 1), and its chemistry was controlled by subsurface waters rich in base cations buffering the effect of acid humic substances from forest and peat that were already present in the catchment. The beginning of the transition to phase 2 (~4400 cal a bp) is marked by simultaneous alterations in all proxies. Climate change combined with the local geochemistry was able to alter the limnological conditions supporting unique chironomid assemblages that have no analogues in recent Carpathian lakes. At ~3400 cal a bp the lake shifted to a phase when acidophilic/acidotolerant taxa indicate characteristic humic lake conditions (phase 3). Some chironomid taxa appearing ~2000 years ago for the first time indicate a dystrophic state in which the lake has remained until now. Human activities have been detected in the area since the Aeneolithic but had no direct influence on the lake.

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Section: Discussionmentioning

confidence: 99%

From oligotrophy to dystrophy: the ontogeny of a humic lake in an extrazonal boreal taiga in Central Europe

Bitušík,

Chamutiová,

Vidhya

et al. 2024

J Quaternary Science

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“…Reflecting on initial investigations by Maizels (1992) the morphological Tüttensee depression and surrounding wall should rather be classified as a "rimmed kettle" or "crater kettle" type of glacial melt out kettle hole. See also the comparable work on kettle holes of Götz et al (2018) in nearby Austria.…”

Section: Study Areamentioning

confidence: 99%

A Late Würmian and Holocene pollen profile from Tüttensee, Upper Bavaria, as evidence of 15 Millennia of landscape history in the Chiemsee glacier region

Rösch¹,

Friedmann²,

Rieckhoff³

et al. 2021

Acta Palaeobot.

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A late Würmian and Holocene pollen profile from Tüttensee near Chiemsee, Bavaria, covering 14 millennia of vegetation history, shows the late Würmian reforestation of the area, Holocene woodland development, and later the human impact on the landscape. In the early Holocene a distinct Ulmus phase preceded the Corylus and Quercus expansion. Afterwards, between 6000 and 4000 BCE, Picea was most common. The expansion of Fagus and Abies started at 4000 BCE, together with the decline of Ulmus. Fagus was more common than Abies. From 500 BCE Abies started to decline, Fagus has also declined from 1000 CE onwards. Before the modern times Picea/Pinus phase Quercus is prevailing. The prehistoric human impact is rather weak. A short reforestation phase at ~ 1 BCE – 1 CE hints at the rather complex migration history in this region with so called Celts, Germanic people and Romans involved. Strong human impact indicated by cereals, Plantago lanceolata, other human indicators and deforestation started at 900 CE.

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Controls on glacial kettle morphology

Prescott,

Zoet,

Hansen

et al. 2024

Earth Surf Processes Landf

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Glacial kettles are surficial depressions that form in formerly glaciated terrain when buried stagnant ice melts within pro‐glacial sediments, often deposited by meltwater streams. Kettles, like other glacial landforms, provide insight into the impact of climate on landscape evolution, such as the extent and timing of glaciations. The geometry of kettle features is variable, but existing theory does not explain the range of observed morphologies. Our study aims to establish a quantitative relationship between the depth of ice burial and the resulting morphology of terrain collapse in kettle depressions. To do so, we simulated kettle formation in the laboratory by burying ice spheres of four sizes in well‐sorted coarse sand at four different depths. As the spheres melt at room temperature, a glacial kettle analog forms at the surface. We scanned the resulting kettle topography with a portable LiDAR scanner to produce 3D digital elevation models of each depression, from which we measured each depression's depth and width and, in one instance, the time series of kettle formation. Using this data, we quantified the relationship between the sphere diameter, burial depth and resulting dimensions of the kettle by developing a set of equations, which we then applied to full‐scale features. Our results indicate that ice burial deeper than one sphere diameter corresponds to a decrease in depression depth and an increase in depression width. This application offers insight into the interdependence of ice burial depth and kettle geometry.

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Geophysical, topographic and stratigraphic analyses of perialpine kettles and implications for postglacial mire formation

Cited by 10 publications

References 44 publications

From oligotrophy to dystrophy: the ontogeny of a humic lake in an extrazonal boreal taiga in Central Europe

From oligotrophy to dystrophy: the ontogeny of a humic lake in an extrazonal boreal taiga in Central Europe

A Late Würmian and Holocene pollen profile from Tüttensee, Upper Bavaria, as evidence of 15 Millennia of landscape history in the Chiemsee glacier region

Controls on glacial kettle morphology

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