Articles | Volume 71, issue 2
https://doi.org/10.5194/egqsj-71-163-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/egqsj-71-163-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
01 Sep 2022
Research article |
| 01 Sep 2022
| 01 Sep 2022
Two glaciers and one sedimentary sink: the competing role of the Aare and the Valais glaciers in filling an overdeepened trough inferred from provenance analysis
Michael A. Schwenk
CORRESPONDING AUTHOR
Institute of Geological Sciences, University of Bern, Bern, Switzerland
Laura Stutenbecker
Institute of Applied Geosciences, Technical University Darmstadt, Darmstadt, Germany
Patrick Schläfli
Institute of Geological Sciences, University of Bern, Bern, Switzerland
Institute of Plant Sciences, University of Bern, Bern, Switzerland
Dimitri Bandou
Institute of Geological Sciences, University of Bern, Bern, Switzerland
Fritz Schlunegger
Institute of Geological Sciences, University of Bern, Bern, Switzerland
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Fritz Schlunegger, Edi Kissling, Dimitri Tibo Bandou, Guilhem Amin Douillet, David Mair, Urs Marti, Regina Reber, Patrick Fabian Schläfli, and Michael Alfred Schwenk
EGUsphere, https://doi.org/10.5194/egusphere-2024-683, https://doi.org/10.5194/egusphere-2024-683, 2024
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Overdeepenings are bedrock depressions filled with sediment. We combine the results of a gravity survey with drilling data to explore the morphology of such a depression beneath the city of Bern. We find that the target overdeepening comprises two basins >200 m deep. They are separated by a bedrock riegel that itself is cut by narrow canyons up to 150 m deep. We postulate that these structures formed underneath a glacier, where erosion by subglacial meltwater caused the formation of the canyons.
Sibylle Knapp, Michael Schwenk, and Michael Krautblatter
Earth Surf. Dynam., 10, 1185–1193, https://doi.org/10.5194/esurf-10-1185-2022, https://doi.org/10.5194/esurf-10-1185-2022, 2022
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The Flims area in the Swiss Alps has fascinated the researchers with its complex geological history ever since. Especially the order of events related to the Tamins and Flims rockslides has long been debated. This paper presents novel results based on up to 160 m deep geophysical profiles, which show onlaps of the Bonaduz Formation onto the Tamins deposits (Ils Aults) and thus indicate that the Tamins rockslide occurred first. The consecutive evolution of this landscape is shown in four phases.
Michael A. Schwenk, Patrick Schläfli, Dimitri Bandou, Natacha Gribenski, Guilhem A. Douillet, and Fritz Schlunegger
Sci. Dril., 30, 17–42, https://doi.org/10.5194/sd-30-17-2022, https://doi.org/10.5194/sd-30-17-2022, 2022
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A scientific drilling was conducted into a bedrock trough (overdeepening) in Bern-Bümpliz (Switzerland) in an effort to advance the knowledge of the Quaternary prior to 150 000 years ago. We encountered a 208.5 m-thick succession of loose sediments (gravel, sand and mud) in the retrieved core and identified two major sedimentary sequences (A: lower, B: upper). The sedimentary suite records two glacial advances and the subsequent filling of a lake sometime between 300 000 and 200 000 years ago.
Michael Margreth, Florian Lustenberger, Dorothea Hug Peter, Fritz Schlunegger, and Massimiliano Zappa
Nat. Hazards Earth Syst. Sci. Discuss., https://doi.org/10.5194/nhess-2024-78, https://doi.org/10.5194/nhess-2024-78, 2024
Preprint under review for NHESS
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Recession models (RM) are crucial for observing the low flow behavior of a catchment. We developed two novel RM, which are designed to represent slowly draining catchment conditions. With a newly designed low flow prediction procedure we tested the prediction capability of these two models and three others from literature. One of our novel products delivered the best results, because it best represents the slowly draining catchment conditions.
Fritz Schlunegger, Edi Kissling, Dimitri Tibo Bandou, Guilhem Amin Douillet, David Mair, Urs Marti, Regina Reber, Patrick Fabian Schläfli, and Michael Alfred Schwenk
EGUsphere, https://doi.org/10.5194/egusphere-2024-683, https://doi.org/10.5194/egusphere-2024-683, 2024
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Overdeepenings are bedrock depressions filled with sediment. We combine the results of a gravity survey with drilling data to explore the morphology of such a depression beneath the city of Bern. We find that the target overdeepening comprises two basins >200 m deep. They are separated by a bedrock riegel that itself is cut by narrow canyons up to 150 m deep. We postulate that these structures formed underneath a glacier, where erosion by subglacial meltwater caused the formation of the canyons.
Daniel Bolliger, Fritz Schlunegger, and Brian W. McArdell
Nat. Hazards Earth Syst. Sci., 24, 1035–1049, https://doi.org/10.5194/nhess-24-1035-2024, https://doi.org/10.5194/nhess-24-1035-2024, 2024
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We analysed data from the Illgraben debris flow monitoring station, Switzerland, and we modelled these flows with a debris flow runout model. We found that no correlation exists between the grain size distribution, the mineralogical composition of the matrix, and the debris flow properties. The flow properties rather appear to be determined by the flow volume, from which most other parameters can be derived.
Ariel Henrique do Prado, David Mair, Philippos Garefalakis, Chantal Schmidt, Alexander Whittaker, Sebastien Castelltort, and Fritz Schlunegger
Hydrol. Earth Syst. Sci., 28, 1173–1190, https://doi.org/10.5194/hess-28-1173-2024, https://doi.org/10.5194/hess-28-1173-2024, 2024
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Engineering structures known as check dams are built with the intention of managing streams. The effectiveness of such structures can be expressed by quantifying the reduction of the sediment flux after their implementation. In this contribution, we estimate and compare the volumes of sediment transported in a mountain stream for engineered and non-engineered conditions. We found that without check dams the mean sediment flux would be ca. 10 times larger in comparison with the current situation.
Renas Koshnaw, Jonas Kley, and Fritz Schlunegger
EGUsphere, https://doi.org/10.5194/egusphere-2023-3123, https://doi.org/10.5194/egusphere-2023-3123, 2024
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This study investigates how Earth's geodynamic processes shaped the NW Zagros in the Middle East. The Neogene foreland basin underwent subsidence due to the load of surface and the subducting slab, and was later influenced by the Neotethys horizontal slab tear propagation in the late Miocene and the northward flow of mantle material.
Sibylle Knapp, Michael Schwenk, and Michael Krautblatter
Earth Surf. Dynam., 10, 1185–1193, https://doi.org/10.5194/esurf-10-1185-2022, https://doi.org/10.5194/esurf-10-1185-2022, 2022
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The Flims area in the Swiss Alps has fascinated the researchers with its complex geological history ever since. Especially the order of events related to the Tamins and Flims rockslides has long been debated. This paper presents novel results based on up to 160 m deep geophysical profiles, which show onlaps of the Bonaduz Formation onto the Tamins deposits (Ils Aults) and thus indicate that the Tamins rockslide occurred first. The consecutive evolution of this landscape is shown in four phases.
David Mair, Ariel Henrique Do Prado, Philippos Garefalakis, Alessandro Lechmann, Alexander Whittaker, and Fritz Schlunegger
Earth Surf. Dynam., 10, 953–973, https://doi.org/10.5194/esurf-10-953-2022, https://doi.org/10.5194/esurf-10-953-2022, 2022
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Grain size data are important for studying and managing rivers, but they are difficult to obtain in the field. Therefore, methods have been developed that use images from small and remotely piloted aircraft. However, uncertainty in grain size data from such image-based products is understudied. Here we present a new way of uncertainty estimation that includes fully modeled errors. We use this technique to assess the effect of several image acquisition aspects on grain size uncertainty.
Maryam Mansouri, Laura Stutenbecker, Matthias Hinderer, Anna Lewin, and Enkurie L. Dawit
Earth Surf. Dynam. Discuss., https://doi.org/10.5194/esurf-2022-35, https://doi.org/10.5194/esurf-2022-35, 2022
Preprint withdrawn
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The Permian-Triassic is well known for the most extensive mass extinction in the history of life caused by climatic, tectonic, and ecological disruptions. Due to the lack of studies on continental deposits in eastern Africa, we aim to use this continental archive to study the response of earth surface processes linked to perturbations around the PTB. Our results show a successive erosional process in East Africa due to extensional movements accompanied by recycling and then by basement erosion.
Ariel Henrique do Prado, Renato Paes de Almeida, Cristiano Padalino Galeazzi, Victor Sacek, and Fritz Schlunegger
Earth Surf. Dynam., 10, 457–471, https://doi.org/10.5194/esurf-10-457-2022, https://doi.org/10.5194/esurf-10-457-2022, 2022
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Our work is focused on describing how and why the terrace levels of central Amazonia were formed during the last 100 000 years. We propose to address this question through a landscape evolution numerical model. Our results show that terrace levels at lower elevation were established in response to dry–wet climate changes and the older terrace levels at higher elevations most likely formed in response to a previously higher elevation of the regional base level.
Alessandro Lechmann, David Mair, Akitaka Ariga, Tomoko Ariga, Antonio Ereditato, Ryuichi Nishiyama, Ciro Pistillo, Paola Scampoli, Mykhailo Vladymyrov, and Fritz Schlunegger
Geosci. Model Dev., 15, 2441–2473, https://doi.org/10.5194/gmd-15-2441-2022, https://doi.org/10.5194/gmd-15-2441-2022, 2022
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Muon tomography is a technology that is used often in geoscientific research. The know-how of data analysis is, however, still possessed by physicists who developed this technology. This article aims at providing geoscientists with the necessary tools to perform their own analyses. We hope that a lower threshold to enter the field of muon tomography will allow more geoscientists to engage with muon tomography. SMAUG is set up in a modular way to allow for its own modules to work in between.
Michael A. Schwenk, Patrick Schläfli, Dimitri Bandou, Natacha Gribenski, Guilhem A. Douillet, and Fritz Schlunegger
Sci. Dril., 30, 17–42, https://doi.org/10.5194/sd-30-17-2022, https://doi.org/10.5194/sd-30-17-2022, 2022
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A scientific drilling was conducted into a bedrock trough (overdeepening) in Bern-Bümpliz (Switzerland) in an effort to advance the knowledge of the Quaternary prior to 150 000 years ago. We encountered a 208.5 m-thick succession of loose sediments (gravel, sand and mud) in the retrieved core and identified two major sedimentary sequences (A: lower, B: upper). The sedimentary suite records two glacial advances and the subsequent filling of a lake sometime between 300 000 and 200 000 years ago.
Emilija Krsnik, Katharina Methner, Marion Campani, Svetlana Botsyun, Sebastian G. Mutz, Todd A. Ehlers, Oliver Kempf, Jens Fiebig, Fritz Schlunegger, and Andreas Mulch
Solid Earth, 12, 2615–2631, https://doi.org/10.5194/se-12-2615-2021, https://doi.org/10.5194/se-12-2615-2021, 2021
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Here we present new surface elevation constraints for the middle Miocene Central Alps based on stable and clumped isotope geochemical analyses. Our reconstructed paleoelevation estimate is supported by isotope-enabled paleoclimate simulations and indicates that the Miocene Central Alps were characterized by a heterogeneous and spatially transient topography with high elevations locally exceeding 4000 m.
Renas I. Koshnaw, Fritz Schlunegger, and Daniel F. Stockli
Solid Earth, 12, 2479–2501, https://doi.org/10.5194/se-12-2479-2021, https://doi.org/10.5194/se-12-2479-2021, 2021
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As continental plates collide, mountain belts grow. This study investigated the provenance of rocks from the northwestern segment of the Zagros mountain belt to unravel the convergence history of the Arabian and Eurasian plates. Provenance data synthesis and field relationships suggest that the Zagros Mountains developed as a result of the oceanic crust emplacement on the Arabian continental plate, followed by the Arabia–Eurasia collision and later uplift of the broader region.
Owen A. Anfinson, Daniel F. Stockli, Joseph C. Miller, Andreas Möller, and Fritz Schlunegger
Solid Earth, 11, 2197–2220, https://doi.org/10.5194/se-11-2197-2020, https://doi.org/10.5194/se-11-2197-2020, 2020
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We present new U–Pb age data to provide insights into the source of sediment for the Molasse Sedimentary Basin in Switzerland. The paper aims to help shed light on the processes that built the Central Alpine Mountains between ~35 and ~15 Ma. A primary conclusion drawn from the results is that at ~21 Ma there was a significant change in the sediment sources for the basin. We feel this change indicates major tectonic changes within the Central Alps.
Samuel Mock, Christoph von Hagke, Fritz Schlunegger, István Dunkl, and Marco Herwegh
Solid Earth, 11, 1823–1847, https://doi.org/10.5194/se-11-1823-2020, https://doi.org/10.5194/se-11-1823-2020, 2020
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Based on thermochronological data, we infer thrusting along-strike the northern rim of the Central Alps between 12–4 Ma. While the lithology influences the pattern of thrusting at the local scale, we observe that thrusting in the foreland is a long-wavelength feature occurring between Lake Geneva and Salzburg. This coincides with the geometry and dynamics of the attached lithospheric slab at depth. Thus, thrusting in the foreland is at least partly linked to changes in slab dynamics.
Fritz Schlunegger, Romain Delunel, and Philippos Garefalakis
Earth Surf. Dynam., 8, 717–728, https://doi.org/10.5194/esurf-8-717-2020, https://doi.org/10.5194/esurf-8-717-2020, 2020
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We calculated the probability of sediment transport in coarse-grained mountainous streams in the Alps and the Andes where data on water discharge is available. We find a positive correlation between the predicted probability of sediment transport and the grain size sorting of the bed material. We suggest that besides sediment discharge, the bedload sorting exerts a significant influence on the mobility of sediment and thus on the stability of gravel bars in mountainous streams.
David Mair, Alessandro Lechmann, Romain Delunel, Serdar Yeşilyurt, Dmitry Tikhomirov, Christof Vockenhuber, Marcus Christl, Naki Akçar, and Fritz Schlunegger
Earth Surf. Dynam., 8, 637–659, https://doi.org/10.5194/esurf-8-637-2020, https://doi.org/10.5194/esurf-8-637-2020, 2020
Philippos Garefalakis and Fritz Schlunegger
Solid Earth, 10, 2045–2072, https://doi.org/10.5194/se-10-2045-2019, https://doi.org/10.5194/se-10-2045-2019, 2019
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The controls on the 20 Myr old Burdigalian transgression in the Swiss Molasse basin have been related to a reduction in sediment flux, a rise in global sea level, or tectonic processes in the adjacent Alps. Here, we readdress this problem and extract stratigraphic signals from the Upper Marine Molasse deposits in Switzerland. In conclusion, we consider rollback tectonics to be the main driving force controlling the transgression, which is related to a deepening and widening of the basin.
Laura Stutenbecker, Peter M. E. Tollan, Andrea Madella, and Pierre Lanari
Solid Earth, 10, 1581–1595, https://doi.org/10.5194/se-10-1581-2019, https://doi.org/10.5194/se-10-1581-2019, 2019
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The Aar and Mont Blanc regions in the Alps are large granitoid massifs characterized by high topography. We analyse when these granitoids were first exhumed to the surface. We test this by tracking specific garnet grains, which are exclusively found in the granitoid massifs, in the sediments contained in the alpine foreland basin. This research ties in with ongoing debates on the timing and mechanisms of mountain building.
François Clapuyt, Veerle Vanacker, Marcus Christl, Kristof Van Oost, and Fritz Schlunegger
Solid Earth, 10, 1489–1503, https://doi.org/10.5194/se-10-1489-2019, https://doi.org/10.5194/se-10-1489-2019, 2019
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Using state-of-the-art geomorphic techniques, we quantified a 2-order of magnitude discrepancy between annual, decadal, and millennial sediment fluxes of a landslide-affected mountainous river catchment in the Swiss Alps. Our results illustrate that the impact of a single sediment pulse is strongly attenuated at larger spatial and temporal scales by sediment transport. The accumulation of multiple sediment pulses has rather a measurable impact on the regional pattern of sediment fluxes.
Samuel Mock, Christoph von Hagke, Fritz Schlunegger, István Dunkl, and Marco Herwegh
Solid Earth Discuss., https://doi.org/10.5194/se-2019-56, https://doi.org/10.5194/se-2019-56, 2019
Revised manuscript not accepted
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Based on own and published age data, we can infer tectonic pulses along-strike the entire northern rim of the Central Alps between 12–4 million years. Although lithologic variations largely influence the local deformation pattern, the tectonic signal is remarkably consistent all the way from Lake Geneva to Salzburg. This might result from a deep-seated tectonic force and marks a change from dominantly vertical to large-scale horizontal tectonics in the late stage of Alpine orogeny.
Alessandro Lechmann, David Mair, Akitaka Ariga, Tomoko Ariga, Antonio Ereditato, Ryuichi Nishiyama, Ciro Pistillo, Paola Scampoli, Fritz Schlunegger, and Mykhailo Vladymyrov
Solid Earth, 9, 1517–1533, https://doi.org/10.5194/se-9-1517-2018, https://doi.org/10.5194/se-9-1517-2018, 2018
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Muon tomography is a technology, similar to X-ray tomography, to image the interior of an object, including geologically interesting ones. In this work, we examined the influence of rock composition on the physical measurements, and the possible error that is made by assuming a too-simplistic rock model. We performed numerical simulations for a more realistic rock model and found that beyond 300 m of rock, the composition starts to play a significant role and has to be accounted for.
David Mair, Alessandro Lechmann, Marco Herwegh, Lukas Nibourel, and Fritz Schlunegger
Solid Earth, 9, 1099–1122, https://doi.org/10.5194/se-9-1099-2018, https://doi.org/10.5194/se-9-1099-2018, 2018
Fritz Schlunegger and Philippos Garefalakis
Earth Surf. Dynam., 6, 743–761, https://doi.org/10.5194/esurf-6-743-2018, https://doi.org/10.5194/esurf-6-743-2018, 2018
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Clast imbrication, which is a depositional fabric where clasts overlap each other similar to a run of toppled dominoes, is one of the most conspicuous sedimentary structures in coarse-grained fluvial deposits. However, the conditions leading to this fabric have been contested. Here, we calculate the hydrological conditions for various stream gradients. We find that clast imbrication most likely forms where channel gradients exceed a threshold and where upper flow regime conditions prevail.
Anna Costa, Peter Molnar, Laura Stutenbecker, Maarten Bakker, Tiago A. Silva, Fritz Schlunegger, Stuart N. Lane, Jean-Luc Loizeau, and Stéphanie Girardclos
Hydrol. Earth Syst. Sci., 22, 509–528, https://doi.org/10.5194/hess-22-509-2018, https://doi.org/10.5194/hess-22-509-2018, 2018
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We explore the signal of a warmer climate in the suspended-sediment dynamics of a regulated and human-impacted Alpine catchment. We demonstrate that temperature-driven enhanced melting of glaciers, which occurred in the mid-1980s, played a dominant role in suspended sediment concentration rise, through increased runoff from sediment-rich proglacial areas, increased contribution of sediment-rich meltwater, and increased sediment supply in proglacial areas due to glacier recession.
François Clapuyt, Veerle Vanacker, Fritz Schlunegger, and Kristof Van Oost
Earth Surf. Dynam., 5, 791–806, https://doi.org/10.5194/esurf-5-791-2017, https://doi.org/10.5194/esurf-5-791-2017, 2017
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This work aims at understanding the behaviour of an earth flow located in the Swiss Alps by reconstructing very accurately its topography over a 2-year period. Aerial photos taken from a drone, which are then processed using a computer vision algorithm, were used to derive the topographic datasets. Combination and careful interpretation of high-resolution topographic analyses reveal the internal mechanisms of the earthflow and its complex rotational structure, which is evolving over time.
Camille Litty, Fritz Schlunegger, and Willem Viveen
Earth Surf. Dynam., 5, 571–583, https://doi.org/10.5194/esurf-5-571-2017, https://doi.org/10.5194/esurf-5-571-2017, 2017
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This paper focuses on the analysis of the properties controlling the grain size in the streams of the western Peruvian Andes. Pebble size distributions in these streams have been compared to fluvial processes and basin properties. The resulting trends and differences in sediment properties seem to have been controlled by threshold conditions upon supply and transport.
Laura Stutenbecker, Anna Costa, and Fritz Schlunegger
Earth Surf. Dynam., 4, 253–272, https://doi.org/10.5194/esurf-4-253-2016, https://doi.org/10.5194/esurf-4-253-2016, 2016
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This paper considers the influence of lithology on the landscape development in the Central Swiss Alps. In high-alpine settings such as the upper Rhône valley, external forcing by climate, glaciation and uplift affects the geomorphological evolution of the landscape. By careful compilation of published data and geomorphological analysis we found that the rock type and its susceptibility to erosion are the main factors controlling the response time to those perturbations.
K. P. Norton, F. Schlunegger, and C. Litty
Earth Surf. Dynam., 4, 147–157, https://doi.org/10.5194/esurf-4-147-2016, https://doi.org/10.5194/esurf-4-147-2016, 2016
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Cut-fill terraces are common landforms throughout the world. Their distribution both in space and time is not clear-cut, as they can arise from numerous processes. We apply a climate-dependent regolith production algorithm to determine potential sediment loads during climate shifts. When combined with transport capacity, our results suggest that the cut-fill terraces of western Peru can result from transient stripping of hillslope sediment but not steady-state hillslope erosion.
Related subject area
Quaternary geology
Subglacial deformation and till formation in a stratigraphic complex Late Pleistocene sequence (Einödgraben/Aurach, Kitzbühel Alps, Austria)
Loess formation and chronology at the Palaeolithic key site Rheindahlen, Lower Rhine Embayment, Germany
Subglacial hydrology from high-resolution ice-flow simulations of the Rhine Glacier during the Last Glacial Maximum: a proxy for glacial erosion
The past is the key to the future – considering Pleistocene subglacial erosion for the minimum depth of a radioactive waste repository
Comparison of overdeepened structures in formerly glaciated areas of the northern Alpine foreland and northern central Europe
Tunnel valleys in the southeastern North Sea: more data, more complexity
The lithostratigraphic formations of the coastal Holocene in NE Germany – a synthesis
Morpho-sedimentary characteristics of Holocene paleochannels in the Upper Rhine alluvial plain, France
A tribute to Narr (1952): On the stratigraphy of Upper Palaeolithic types and type groups
A tribute to Fink (1956): On the correlation of terraces and loesses in Austria
A tribute to Schwarzbach (1968): Recent ice age hypotheses
A tribute to Boenigk (1978): The fluvial development of the Lower Rhine Basin during the late Tertiary and early Quaternary
A composite 10Be, IR-50 and 14C chronology of the pre-Last Glacial Maximum (LGM) full ice extent of the western Patagonian Ice Sheet on the Isla de Chiloé, south Chile (42° S)
Der späteiszeitliche Tüttensee-Komplex als Ergebnis der Abschmelzgeschichte am Ostrand des Chiemsee-Gletschers und sein Bezug zum „Chiemgau Impakt“ (Landkreis Traunstein, Oberbayern)
The multistage structural development of the Upper Weichselian Jasmund Glacitectonic Complex (Rügen, NE Germany)
The formation of Middle and Upper Pleistocene terraces (Übergangsterrassen and Hochterrassen) in the Bavarian Alpine Foreland – new numeric dating results (ESR, OSL, 14C) and gastropod fauna analysis
Jürgen M. Reitner and John Menzies
E&G Quaternary Sci. J., 73, 101–116, https://doi.org/10.5194/egqsj-73-101-2024, https://doi.org/10.5194/egqsj-73-101-2024, 2024
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Knowledge of subglacial conditions is of great relevance for understanding glacier dynamics. A combination of micro- and macrosedimentological analysis of diamictons and deformation structures can form the basis for the reconstruction of past subglacial conditions. We present the results of such a study on subglacial tills in the Kitzbühel Alps (Tyrol, Austria). Our study demonstrates the need for a reinvestigation of deposits in respect of genesis and importance for the glacial record.
Martin Kehl, Katharina Seeger, Stephan Pötter, Philipp Schulte, Nicole Klasen, Mirijam Zickel, Andreas Pastoors, and Erich Claßen
E&G Quaternary Sci. J., 73, 41–67, https://doi.org/10.5194/egqsj-73-41-2024, https://doi.org/10.5194/egqsj-73-41-2024, 2024
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The loess–palaeosol sequence (LPS) at Rheindahlen provides a detailed sedimentary archive of past climate change. Furthermore, it contains Palaeolithic find horizons indicating repeated occupations by Neanderthals. The age of loess layers and the timing of human occupation are a matter of strong scientific debate. We present new data to shed light on formation processes and deposition ages. Previous chronostratigraphic estimates are revised providing a reliable chronostratigraphic framework .
Denis Cohen, Guillaume Jouvet, Thomas Zwinger, Angela Landgraf, and Urs H. Fischer
E&G Quaternary Sci. J., 72, 189–201, https://doi.org/10.5194/egqsj-72-189-2023, https://doi.org/10.5194/egqsj-72-189-2023, 2023
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During glacial times in Switzerland, glaciers of the Alps excavated valleys in low-lying regions that were later filled with sediment or water. How glaciers eroded these valleys is not well understood because erosion occurred near ice margins where ice moved slowly and was present for short times. Erosion is linked to the speed of ice and to water flowing under it. Here we present a model that estimates the location of water channels beneath the ice and links these locations to zones of erosion.
Sonja Breuer, Anke Bebiolka, Vera Noack, and Jörg Lang
E&G Quaternary Sci. J., 72, 113–125, https://doi.org/10.5194/egqsj-72-113-2023, https://doi.org/10.5194/egqsj-72-113-2023, 2023
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Our work presented here deals with the impact of deep glacial erosion forms and their effect on the safety of a possible repository for highly radioactive waste. In past ice ages, glaciers have formed deep tunnel valleys. We assume that similar depths of erosion can be reached in future ice ages. This must be taken into account in the safety assessment of radioactive waste repositories. We have calculated a new depth zone map from maps and data based on records from the Pleistocene.
Lukas Gegg and Frank Preusser
E&G Quaternary Sci. J., 72, 23–36, https://doi.org/10.5194/egqsj-72-23-2023, https://doi.org/10.5194/egqsj-72-23-2023, 2023
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Erosion processes below glacier ice have carved large and deep basins in the landscapes surrounding mountain ranges as well as polar regions. With our comparison, we show that these two groups of basins are very similar in their shapes and sizes. However, open questions still remain especially regarding the sediments that later fill up these basins. We aim to stimulate future research and promote exchange between researchers working around the Alps and the northern central European lowlands.
Arne Lohrberg, Jens Schneider von Deimling, Henrik Grob, Kai-Frederik Lenz, and Sebastian Krastel
E&G Quaternary Sci. J., 71, 267–274, https://doi.org/10.5194/egqsj-71-267-2022, https://doi.org/10.5194/egqsj-71-267-2022, 2022
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We present an update on the distribution of tunnel valleys in the southeastern North Sea between Amrum and Heligoland based on active seismic data. Our results demonstrate that very dense grids of seismic profiles are needed to understand the distribution and the formation of tunnel valleys in a given region. We also demonstrate that acquiring offshore active seismic data is time- and cost-effective to learn more about the formation and filling of tunnel valleys in different geological settings.
Reinhard Lampe
E&G Quaternary Sci. J., 71, 249–265, https://doi.org/10.5194/egqsj-71-249-2022, https://doi.org/10.5194/egqsj-71-249-2022, 2022
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The depositional sequences of all types of coastal sediments which accumulated during the Holocene sea-level rise along the NE German coast and in the inner coastal waters are comprehensively described and classified into four formations and two subformations. Their detailed characterisation and chronostratigraphic correlation are an important addition to the only brief definition given in the LithoLex database of the Federal Institute for Geosciences and Natural Resources (BGR).
Mubarak Abdulkarim, Stoil Chapkanski, Damien Ertlen, Haider Mahmood, Edward Obioha, Frank Preusser, Claire Rambeau, Ferréol Salomon, Marco Schiemann, and Laurent Schmitt
E&G Quaternary Sci. J., 71, 191–212, https://doi.org/10.5194/egqsj-71-191-2022, https://doi.org/10.5194/egqsj-71-191-2022, 2022
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We used a combination of remote sensing, field investigations, and laboratory analysis to map and characterize abandoned river channels within the French Upper Rhine alluvial plain. Our results show five major paleochannel groups with significant differences in their pattern, morphological characteristics, and sediment filling. The formation of these paleochannel groups is attributed to significant changes in environmental processes in the area during the last ~ 11 700 years.
Nicholas J. Conard
E&G Quaternary Sci. J., 70, 213–216, https://doi.org/10.5194/egqsj-70-213-2021, https://doi.org/10.5194/egqsj-70-213-2021, 2021
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Karl J. Narr's paper on the stratigraphy of Upper Palaeolithic artefact types and cultural groups from 1952 synthesized the state of research in the early 1950s. Narr's singular focus on cultural history is instructive in terms of both the history of research and as a reflection of what the goals of Palaeolithic archaeology could and should be today.
Tobias Sprafke
E&G Quaternary Sci. J., 70, 221–224, https://doi.org/10.5194/egqsj-70-221-2021, https://doi.org/10.5194/egqsj-70-221-2021, 2021
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This work is an invited retrospective to the seminal paper of Fink (1956). Fink combined field evidence from geology, geomorphology, and soil science to provide a holistic framework of Quaternary stratigraphy and paleoenvironmental evolution in the Austrian Alpine foreland. This paper is an outstanding example of the relevance of interdisciplinary perspectives to understand landscape evolution. With a few exceptions in detail, the findings of Fink remain largely valid until today.
Jürgen Ehlers
E&G Quaternary Sci. J., 70, 235–237, https://doi.org/10.5194/egqsj-70-235-2021, https://doi.org/10.5194/egqsj-70-235-2021, 2021
Philip L. Gibbard
E&G Quaternary Sci. J., 70, 251–255, https://doi.org/10.5194/egqsj-70-251-2021, https://doi.org/10.5194/egqsj-70-251-2021, 2021
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This is an appraisal of the article by Wolfgang Boenigk published in Eiszeitalter und Gegenwart in 1978.
Juan-Luis García, Christopher Lüthgens, Rodrigo M. Vega, Ángel Rodés, Andrew S. Hein, and Steven A. Binnie
E&G Quaternary Sci. J., 70, 105–128, https://doi.org/10.5194/egqsj-70-105-2021, https://doi.org/10.5194/egqsj-70-105-2021, 2021
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The Last Glacial Maximum (LGM) about 21 kyr ago is known to have been global in extent. Nonetheless, we have limited knowledge during the pre-LGM time in the southern middle latitudes. If we want to understand the causes of the ice ages, the complete glacial period must be addressed. In this paper, we show that the Patagonian Ice Sheet in southern South America reached its full glacial extent also by 57 kyr ago and defies a climate explanation.
Robert Huber, Robert Darga, and Hans Lauterbach
E&G Quaternary Sci. J., 69, 93–120, https://doi.org/10.5194/egqsj-69-93-2020, https://doi.org/10.5194/egqsj-69-93-2020, 2020
Anna Gehrmann
E&G Quaternary Sci. J., 69, 59–60, https://doi.org/10.5194/egqsj-69-59-2020, https://doi.org/10.5194/egqsj-69-59-2020, 2020
Gerhard Schellmann, Patrick Schielein, Wolfgang Rähle, and Christoph Burow
E&G Quaternary Sci. J., 68, 141–164, https://doi.org/10.5194/egqsj-68-141-2019, https://doi.org/10.5194/egqsj-68-141-2019, 2019
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This study presents ESR, OSL and C-14 data from Upper and Middle Pleistocene fluvial terraces (Übergangsterrassen, Hochterrassen) and its loess cover in the Bavarian Alpine Foreland. It will be illustrated that the ESR dating of embedded land-snail shells offers a new dating approach with an upper dating limit most probably much older than the penultimate interglacial (MIS 7). Furthermore, it shows that in some areas Hochterrassen gravels are underlain by older interglacial gravel deposits.
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Short summary
We investigated the origin of glacial sediments in the Bern area to determine their route of transport either with the Aare Glacier or the Valais Glacier. These two ice streams are known to have joined in the Bern area during the last major glaciation (ca. 20 000 years ago). However, little is known about the ice streams prior to this last glaciation. Here we collected evidence that during a glaciation about 250 000 years ago the Aare Glacier dominated the area as documented in the deposits.
We investigated the origin of glacial sediments in the Bern area to determine their route of...
