4.5 Article

Late erosion pulse triggered by rapid melt in the cold-based interior of the last Fennoscandian Ice Sheet, an example from Rogen

Related references

Note: Only part of the references are listed.
Article Geography, Physical

Glaciotectonic disintegration of roches moutonnees during glacial ripping in east Sweden

M. Krabbendam et al.

Summary: Roches moutonnees are typical landforms of glacial erosion, characterized by an asymmetric profile due to abrasion and lee-side plucking. In eastern Sweden, some roches moutonnees show extensive damage, indicating a subglacial origin. These landforms initially developed in hard rocks, but with glacial activity, the rocks started to disintegrate and were influenced by hydraulic jacking, resulting in uneven polishing and rock mass disintegration.

GEOGRAFISKA ANNALER SERIES A-PHYSICAL GEOGRAPHY (2022)

Article Geography, Physical

Formation of murtoos by repeated flooding of ribbed bedforms along subglacial meltwater corridors

Jean Verite et al.

Summary: Research shows that bedforms in the bed of palaeo-ice sheets record fluctuations in meltwater discharge, highlighting the complex interactions between subglacial drainage, basal processes, and bedform development. Morphometric analysis reveals the progressive transformation of ribbed bedforms into murtoos, and provides a quantification of this transformation using two dimensionless morphometric parameters.

GEOMORPHOLOGY (2022)

Article Geography, Physical

Diversity of murtoos and murtoo-related subglacial landforms in the Finnish area of the Fennoscandian Ice Sheet

Antti E. K. Ojala et al.

Summary: Murtoos are triangular-shaped subglacial landforms found in areas previously covered by the Fennoscandian Ice Sheet. The study in Finland identified five common types of Murtoos and related landforms, highlighting the rapid and complex variations in subglacial hydrology and the role of subglacial meltwater in shaping glacial landscapes.

BOREAS (2021)

Article Geography, Physical

Sedimentology and internal structure of murtoos-V-shaped landforms indicative of a dynamic subglacial hydrological system

Gustaf Peterson Becher et al.

Summary: Research in southern Sweden on v-shaped subglacial landforms (murtoos) shows that they are composed of heterogeneous diamicts with strong fabrics interbedded with sorted sediments, indicating ductile deformation and liquefaction. The landforms are interpreted as being created by till deposition and sedimentation from meltwater with subsequent deformation, suggesting a stepwise formation including periodic deformation events. The model proposed is based on a dynamic subglacial meltwater system similar to processes observed on the Greenland ice sheet today.

GEOMORPHOLOGY (2021)

Article Geography, Physical

Glacitectonic rafts and their role in the generation of Quaternary subglacial bedforms and deposits

David J. A. Evans et al.

Summary: The landforms and sediments on the palaeo-ice stream beds of central Alberta document the production, disaggregation, and moulding processes of glacitectonic rafts, providing insights into the activation and formation of ice streams.

QUATERNARY RESEARCH (2021)

Article Geography, Physical

The distribution of glacial meltwater routes and associated murtoo fields in Finland

Elina Ahokangas et al.

Summary: High-resolution LiDAR-based DEMs have greatly enhanced the mapping of glacial landforms, revealing new features like murtoos. Murtoos show diverse forms and distribution along subglacial meltwater routes, highlighting their role as a missing link in subglacial drainage systems. This study in the Finnish part of Fennoscandian Ice Sheet provides new insights into the development of subglacial drainage.

GEOMORPHOLOGY (2021)

Article Geology

Rock fracturing by subglacial hydraulic jacking in basement rocks, eastern Sweden: the role of beam failure

Maarten Krabbendam et al.

Summary: Research in eastern Sweden has revealed locally dense networks of dilated fractures in basement gneisses, likely formed during the latest glaciation. Re-analysis suggests the formation of new fractures in addition to the reactivation of existing ones, with beam failure theory from structural engineering providing a plausible explanation for the generation of new vertical fractures.
Article Geography, Physical

Formation of ribbed bedforms below shear margins and lobes of palaeo-ice streams

Jean Verite et al.

Summary: Based on geomorphological and sedimentological observations, conceptual ice stream land systems provide insights into ice-meltwater-till-bedrock interactions. The spatial distribution and formation processes of ribbed bedforms on paleo-ice stream beds are explored, showing that different types of ribbed bedforms develop depending on the ice flow dynamics and subglacial conditions. These ribbed bedforms can serve as geomorphic markers to reconstruct ice stream margins and infer meltwater drainage characteristics.

CRYOSPHERE (2021)

Article Geosciences, Multidisciplinary

Glacial Ripping in Sedimentary Rocks: Loch Eriboll, NW Scotland

Adrian M. Hall et al.

Summary: The study identified a process called glacial ripping in gneiss terrain in lowland Sweden and in hard Cambrian quartz-arenites at Loch Eriboll in NW Scotland. It found that glacial ripping can effectively operate in bedded, hard sedimentary rocks and its impact is significant in till formation. Potential markers for glacial ripping were also identified in other sedimentary terrains in formerly glaciated areas of the Northern Hemisphere.

GEOSCIENCES (2021)

Article Geography, Physical

Glacial ripping: geomorphological evidence from Sweden for a new process of glacial erosion

Adrian M. Hall et al.

GEOGRAFISKA ANNALER SERIES A-PHYSICAL GEOGRAPHY (2020)

Article Geosciences, Multidisciplinary

Elevation Changes of the Fennoscandian Ice Sheet Interior During the Last Deglaciation

T. P. Lane et al.

GEOPHYSICAL RESEARCH LETTERS (2020)

Article Geography

Glacial geomorphology between Lake Vanern and Lake Vattern, southern Sweden

Christian Ohrling et al.

JOURNAL OF MAPS (2020)

Article Multidisciplinary Sciences

Ice sheet flow with thermally activated sliding. Part 1: the role of advection

E. Mantelli et al.

PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES (2019)

Article Geography, Physical

Glacial erosion: status and outlook

R. B. Alley et al.

ANNALS OF GLACIOLOGY (2019)

Article Geography, Physical

Hummock corridors in the south-central sector of the Fennoscandian ice sheet, morphometry and pattern

Gustaf Peterson et al.

EARTH SURFACE PROCESSES AND LANDFORMS (2018)

Article Geography, Physical

Triangular-shaped landforms reveal subglacial drainage routes in SW Finland

J. Makinen et al.

QUATERNARY SCIENCE REVIEWS (2017)

Article Geography, Physical

Deglaciation of the Eurasian ice sheet complex

Henry Patton et al.

QUATERNARY SCIENCE REVIEWS (2017)

Article Geography, Physical

Glacial dispersal and flow history, East Arm area of Great Slave Lake, NWT, Canada

D. R. Sharpe et al.

QUATERNARY SCIENCE REVIEWS (2017)

Article Geography, Physical

Deglaciation of Fennoscandia

Arjen P. Stroeven et al.

QUATERNARY SCIENCE REVIEWS (2016)

Article Multidisciplinary Sciences

Greenland subglacial drainage evolution regulated by weakly connected regions of the bed

Matthew J. Hoffman et al.

NATURE COMMUNICATIONS (2016)

Article Geography, Physical

Ice-stream initiation, duration and thinning on James Ross Island, northern Antarctic Peninsula

N. F. Glasser et al.

QUATERNARY SCIENCE REVIEWS (2014)

Article Multidisciplinary Sciences

An instability theory for the formation of ribbed moraine, drumlins and mega-scale glacial lineations

A. C. Fowler et al.

PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES (2014)

Article Geography, Physical

Pre-Glacial Landform Inheritance in a Glaciated Shield Landscape

Adrian M. Hall et al.

GEOGRAFISKA ANNALER SERIES A-PHYSICAL GEOGRAPHY (2013)

Article Multidisciplinary Sciences

Deglacial rapid sea level rises caused by ice-sheet saddle collapses

Lauren J. Gregoire et al.

NATURE (2012)

Article Geography, Physical

Weichselian ice movement in South Norway and adjacent areas

TORE O. VORREN

BOREAS (2010)

Article Geology

Electrical-sedimentary anisotropy of Rogen moraine, Lake Rogen area, Sweden

Raimo Sutinen et al.

SEDIMENTARY GEOLOGY (2010)

Article Geography, Physical

Preservation of block fields beneath Pleistocene ice sheets on Solen and Elgahogna, central-eastern Norway

Havard Juliussen et al.

ZEITSCHRIFT FUR GEOMORPHOLOGIE (2007)

Article Geography, Physical

Increased water storage at ice-stream onsets: a critical mechanism?

Robert Bindschadler et al.

JOURNAL OF GLACIOLOGY (2007)

Article Geography, Physical

Subglacial decoupling at the sediment/bedrock interface:: a new mechanism for rapid flowing ice

Kurt H. Kjaer et al.

QUATERNARY SCIENCE REVIEWS (2006)

Article Geography, Physical

Ribbed moraine stratigraphy and formation in southern Finnish Lapland

P Sarala

JOURNAL OF QUATERNARY SCIENCE (2006)

Article Geography, Physical

Rogen moraine:: an example of glacial reshaping of pre-existing landforms

P Möller

QUATERNARY SCIENCE REVIEWS (2006)

Article Geosciences, Multidisciplinary

Large-scale effects of subglacial meltwater flow in the southern Slave Province, Northwest Territories, Canada

VN Rampton

CANADIAN JOURNAL OF EARTH SCIENCES (2000)