4.6 Article

Characteristics and formation of bedrock mega-grooves (BMGs) in glaciated terrain: 2-conceptual models of BMG initiation

Related references

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

Characteristics and formation of bedrock mega-grooves (BMGs) in glaciated terrain: 1-morphometric analyses

Mihaela Newton et al.

Summary: This study systematically maps, samples, and measures bedrock mega-grooves (BMGs) from ten locations worldwide. The results show that BMGs have consistent morphometric characteristics and are distinct from other subglacial landforms. The size, shape, and spacing of BMGs are influenced by site-specific geological characteristics. Future research should focus on numerical modeling experiments to further understand erosion rates and on expanding field observations.

GEOMORPHOLOGY (2023)

Article Geography, Physical

Regional subglacial quarrying and abrasion below hard-bedded palaeo-ice streams crossing the Shield-Palaeozoic boundary of central Canada: the importance of substrate control

Syed Bukhari et al.

Summary: The passage discusses the use of high-resolution LiDAR data to generate three-dimensional surface visualization models, offering insights into the erosional processes under Late Wisconsin palaeo-ice streams in central Ontario. It highlights the differences in the effects of different substrate types on subglacial processes, emphasizing the efficiency of fast flowing ice in stripping limestone cover rocks from Precambrian basement and potentially impacting the formation of large lake basins.

BOREAS (2021)

Article Geography, Physical

Mega-scale glacial lineations formed by ice shelf grounding in the Canadian Beaufort Sea during multiple glaciations

Michael Riedel et al.

Summary: The study reveals buried glacial lineations on the continental slope in the southern Canadian Beaufort Sea, indicating ice shelves grounding on the seabed during past glaciations. These lineations were produced by ice ploughing on the paleo-seafloor through the grounding of an ice shelf, demonstrating extensive ice shelf configuration during ice ages.

EARTH SURFACE PROCESSES AND LANDFORMS (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

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 Geography, Physical

Past water flow beneath Pine Island and Thwaites glaciers, West Antarctica

James D. Kirkham et al.

CRYOSPHERE (2019)

Review Geosciences, Multidisciplinary

Bedrock mega-grooves in glaciated terrain: A review

Mihaela Newton et al.

EARTH-SCIENCE REVIEWS (2018)

Article Geography, Physical

Ice streams of the Late Wisconsin Cordilleran Ice Sheet in western North America

Nick Eyles et al.

QUATERNARY SCIENCE REVIEWS (2018)

Article Multidisciplinary Sciences

Widespread erosion on high plateaus during recent glaciations in Scandinavia

Jane L. Andersen et al.

NATURE COMMUNICATIONS (2018)

Article Geosciences, Multidisciplinary

Pleistocene Evolution of a Scandinavian Plateau Landscape

J. L. Andersen et al.

JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE (2018)

Article Geography

The pre-glacial landscape of Antarctica

David E. Sugden et al.

SCOTTISH GEOGRAPHICAL JOURNAL (2018)

Article Geography

Periglacial geomorphology of summit tors on Bodmin Moor, Cornwall, SW England

David J. A. Evans et al.

JOURNAL OF MAPS (2017)

Article Geosciences, Multidisciplinary

Formation of plateau landscapes on glaciated continental margins

David L. Egholm et al.

NATURE GEOSCIENCE (2017)

Article Geosciences, Multidisciplinary

Classification of cut slopes in weathered meta-sedimentary bedrocks

Johnbosco Ikenna Nkpadobi et al.

EARTH SCIENCES RESEARCH JOURNAL (2016)

Article Geology

Streamlined hard beds formed by palaeo-ice streams: A review

Maarten Krabbendam et al.

SEDIMENTARY GEOLOGY (2016)

Article Geology

Erosional origin of drumlins and megaridges

Nick Eyles et al.

SEDIMENTARY GEOLOGY (2016)

Article Geography, Physical

Quaternary evolution of glaciated gneiss terrains: pre-glacial weathering vs. glacial erosion

Maarten Krabbendam et al.

QUATERNARY SCIENCE REVIEWS (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 Geosciences, Multidisciplinary

Antarctic palaeo-ice streams

Stephen J. Livingstone et al.

EARTH-SCIENCE REVIEWS (2012)

Article Geography, Physical

Lateral plucking as a mechanism for elongate erosional glacial bedforms: explaining megagrooves in Britain and Canada

Maarten Krabbendam et al.

EARTH SURFACE PROCESSES AND LANDFORMS (2011)

Article Geosciences, Multidisciplinary

Large-scale reorganization and sedimentation of terrestrial ice streams during late Wisconsinan Laurentide Ice Sheet deglaciation

Colm O. Cofaigh et al.

GEOLOGICAL SOCIETY OF AMERICA BULLETIN (2010)

Article Geology

Bedrock fracture control of glacial erosion processes and rates

Miriam Duehnforth et al.

GEOLOGY (2010)

Article Geography, Physical

The first stages of erosion by ice sheets: Evidence from central Europe

A. M. Hall et al.

GEOMORPHOLOGY (2010)

Article Geography, Physical

Shear resistance and continuity of subglacial till: hydrology rules

Neal R. Iverson

JOURNAL OF GLACIOLOGY (2010)

Article Geography, Physical

Ice stream influence on West Greenland Ice Sheet dynamics during the Last Glacial Maximum

David H. Roberts et al.

JOURNAL OF QUATERNARY SCIENCE (2010)

Review Geosciences, Multidisciplinary

Relict non-glacial surfaces in formerly glaciated landscapes

B. W. Goodfellow

EARTH-SCIENCE REVIEWS (2007)

Article Geology

The role of meltwater in glacial processes

Nick Eyles

SEDIMENTARY GEOLOGY (2006)

Article Geosciences, Multidisciplinary

A quantitative framework for interpretation of basal ice facies formed by ice accretion over subglacial sediment

P Christoffersen et al.

JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE (2006)

Article Geography, Physical

Bedrock megagrooves in Assynt, NW Scotland

T Bradwell

GEOMORPHOLOGY (2005)

Article Geography, Physical

Saprolite remnants as indicators of pre-glacial landform genesis in southeast Sweden

M Olvmo et al.

GEOGRAFISKA ANNALER SERIES A-PHYSICAL GEOGRAPHY (2005)

Article Geochemistry & Geophysics

Geochemical constraints on the regolith hypothesis for the middle Pleistocene transition

M Roy et al.

EARTH AND PLANETARY SCIENCE LETTERS (2004)

Article Geochemistry & Geophysics

Response of subglacial sediments to basal freeze-on - 1. Theory and comparison to observations from beneath the West Antarctic Ice Sheet

P Christoffersen et al.

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH (2003)

Article Geosciences, Multidisciplinary

Evolution of subglacial bedforms along a paleo-ice stream, Antarctic Peninsula continental shelf

CO Cofaigh et al.

GEOPHYSICAL RESEARCH LETTERS (2002)

Article Geography, Physical

The meltwater hypothesis for subglacial bedforms

J Shaw

QUATERNARY INTERNATIONAL (2002)

Article Geography, Physical

Palaeo-ice streams

CR Stokes et al.

QUATERNARY SCIENCE REVIEWS (2001)