The Landscape of the Rhine Glacier in the Lake Constance Area

Keller, Oskar

doi:10.1007/978-3-030-43203-4_20

Cited by 2 publications

(3 citation statements)

References 3 publications

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“…1) the largely channelized ice stream of the LGM Rhine glacier spread radially outwards along the major foreland overdeepened basins, which mainly follow Lake Constance and Schussen Valley (Fig. 3) (Ellwanger et al, 2011; Keller, 2021). Large volumes of outwash were being deposited the forefield of the advancing glacier.…”

Section: Rhine Glacier Dynamics During the Lgmmentioning

confidence: 99%

Last Glacial Maximum glacier fluctuations on the northern Alpine foreland: Geomorphological and chronological reconstructions from the Rhine and Reuss glacier systems

et al. 2023

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Section: Rhine Glacier Dynamics During the Lgmmentioning

confidence: 99%

Last Glacial Maximum glacier fluctuations on the northern Alpine foreland: Geomorphological and chronological reconstructions from the Rhine and Reuss glacier systems

et al. 2023

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“…These are typically filled with subglacial tills and deltaic, glaciofluvial and/or glaciolacustrine sediments (Buechi et al, 2017;Fiebig et al, 2011;Preusser et al, 2010;Schreiner, 1968). The Molasse bedrock is, particularly in the western and central parts of the study area, largely segregated into isolated highs that are partly covered with older Quaternary sediments (Ellwanger et al, 2011;Keller, 2021;Regierungspräsidium Freiburg Landesamt für Geologie, 2013;Schreiner, 1979).…”

Section: Settingmentioning

confidence: 99%

“…Bedrock in the area is predominantly Molasse (Ellwanger et al, 2011; Keller, 2021; Regierungspräsidium Freiburg Landesamt für Geologie, Rohstoffe und Bergbau, 2013). Only in the very northern and northwestern regions do Jurassic limestones and Miocene volcanic rocks crop out (Hofmann, 1997; Hübscher, 1961; Regierungspräsidium Freiburg Landesamt für Geologie, Rohstoffe und Bergbau, 2013; Schreiner, 1992b).…”

Section: Settingunclassified

Reconstructing basal ice flow patterns of the Last Glacial Maximum Rhine glacier (northern Alpine foreland) based on streamlined subglacial landforms

Kamleitner,

Ivy‐Ochs,

Salcher

et al. 2023

Earth Surf Processes Landf

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Based on high‐resolution (sub)glacial geomorphological mapping, we present a first digital inventory of streamlined bedforms within the footprint of a Last Glacial Maximum (LGM) Alpine piedmont glacier. A total of 2460 drumlins were mapped across the Rhine glacier foreland. Glacial lineations and one field of subglacial ribs (ribbed/Rogen moraines) — the first record of this type of subglacial landform on the Alpine foreland—were identified. Two flowsets, associated with (i) the Rhine glacier's LGM maximum advance (Schaffhausen stadial) and (ii) a late LGM readvance (Stein am Rhein stadial), are differentiated. The vast majority of streamlined bedforms occur in fields aligned in a 16‐ to 30‐km‐wide swath upstream of the Stein am Rhein frontal moraines. Orientation and elongation of drumlins and glacial lineations set the basis for the reconstruction of paleo‐ice flow. Basal flow paths of the LGM maximum advance are visually interpreted and restricted to the zone proximal to the former ice front. The flow field reconstructed for the late LGM glacier readvance (Stein am Rhein stadial) extends tens of kilometres upstream and is modelled implementing a recently published kriging routine. The derived basal flow patterns paired with information on ice surface levels from lateral and frontal moraines and combined with relative ice velocity differences inferred from spatial changes in bedform elongation reveal detailed insights on ice flow geometries, particularly during the glacier readvance. Reconstructed flowlines highlight basal flow under shallow ice that is strongly controlled by local topography evidenced by diverging around basal bumps and converging in (narrow) valley sections and troughs, where basal flow velocities, steered by topography, are high. Gained paleo‐ice basal flow patterns offer new insights on landscape evolution of the northern Alpine foreland and provide evidence‐based flow data to validate future physical modelling results.

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The Landscape of the Rhine Glacier in the Lake Constance Area

Cited by 2 publications

References 3 publications

Last Glacial Maximum glacier fluctuations on the northern Alpine foreland: Geomorphological and chronological reconstructions from the Rhine and Reuss glacier systems

Last Glacial Maximum glacier fluctuations on the northern Alpine foreland: Geomorphological and chronological reconstructions from the Rhine and Reuss glacier systems

Reconstructing basal ice flow patterns of the Last Glacial Maximum Rhine glacier (northern Alpine foreland) based on streamlined subglacial landforms

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