Sedimentology, Structural Characteristics and Morphology of a Neoglacial High-Arctic Moraine-Mound Complex: Midre Lovénbreen, Svalbard

  1. Michael J. Hambrey2,
  2. Poul Christoffersen2,3,
  3. Neil F. Glasser2 and
  4. Bryn Hubbard2
  1. Nicholas G. Midgley1,
  2. Neil F. Glasser2 and
  3. Michael J. Hambrey2

Published Online: 24 MAR 2009

DOI: 10.1002/9781444304435.ch2

Glacial Sedimentary Processes and Products

Glacial Sedimentary Processes and Products

How to Cite

Midgley, N. G., Glasser, N. F. and Hambrey, M. J. (2007) Sedimentology, Structural Characteristics and Morphology of a Neoglacial High-Arctic Moraine-Mound Complex: Midre Lovénbreen, Svalbard, in Glacial Sedimentary Processes and Products (eds M. J. Hambrey, P. Christoffersen, N. F. Glasser and B. Hubbard), Blackwell Publishing Ltd., Oxford, UK. doi: 10.1002/9781444304435.ch2

Editor Information

  1. 2

    Centre for Glaciology, Institute of Geography & Earth Sciences, Aberystwyth University, Wales, Ceredigion SY23 3DB, UK

  2. 3

    Scott Polar Research Institute, University of Cambridge, Lensfield Road, Cambridge, CB2 1ER, UK

Author Information

  1. 1

    School of Animal, Rural and Environmental Sciences, Nottingham Trent University, Brackenhurst, Southwell, Nottinghamshire, NG25 0QF, UK

  2. 2

    Centre for Glaciology, Institute of Geography & Earth Sciences, Aberystwyth University, Wales, Ceredigion SY23 3DB, UK

Publication History

  1. Published Online: 24 MAR 2009
  2. Published Print: 14 DEC 2007

Book Series:

  1. Special Publication Number 39 of the International Association of Sedimentologists

Book Series Editors:

  1. Isabel Montanez

Series Editor Information

  1. University of California, Davis, USA

ISBN Information

Print ISBN: 9781405183000

Online ISBN: 9781444304435

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Keywords:

  • sediments, structural characteristics and morphology - of Neoglacial moraine mound complex at high-Arctic, polythermal, land-based glacier – midre Lovénbreen, Svalbard;
  • three broad moraine mound morphological types - identified and characterised using digital elevation models;
  • geological and glaciological setting of midre Lovénbreen;
  • interpretation of moraine mound facies;
  • moraine mound facies;
  • sediment deformation;
  • moraine mound morphology;
  • rectilinear and curvilinear ice-proximal face;
  • landform development by englacial thrusting at contemporary and former glaciers

Summary

Detailed analyses of the sediments, structural characteristics and morphology of a Neoglacial moraine-mound complex at a high-Arctic, polythermal, land-based glacier – midre Lovénbreen, Svalbard – have been undertaken in order to evaluate their mode of formation and subsequent modification. Ten moraine mound lithofacies were identified: four types of diamicton, four types of gravel, sand and mud. A buried debris-bearing basal ice facies was also identified following excavation of a single moraine mound. The moraine mound lithofacies and buried basal ice reflect subglacial, glaciofluvial and basal ice layer processes. Structural attributes of the moraine mounds include faulting, folding and shearing. Three broad moraine mound morphological types are identified and characterised using Digital Elevation Models. Moraine mound formation is linked to elevation of sediment within the ice, associated with englacial thrusting. The recognition of buried ice in a moraine mound implies that on melting, the landform will become degraded. Hence the preservation potential of thrust-related features within these moraine mounds is low, unless the debris content of the ice is high.