The Newbigging Esker System, Lanarkshire, Southern Scotland: A Model for Composite Tunnel, Subaqueous Fan and Supraglacial Esker Sedimentation

  1. Michael J. Hambrey4,
  2. Poul Christoffersen4,5,
  3. Neil F. Glasser4 and
  4. Bryn Hubbard4
  1. Matthew R. Bennett1,
  2. David Huddart2 and
  3. Geoffrey S. P. Thomas3

Published Online: 24 MAR 2009

DOI: 10.1002/9781444304435.ch12

Glacial Sedimentary Processes and Products

Glacial Sedimentary Processes and Products

How to Cite

Bennett, M. R., Huddart, D. and Thomas, G. S. P. (2007) The Newbigging Esker System, Lanarkshire, Southern Scotland: A Model for Composite Tunnel, Subaqueous Fan and Supraglacial Esker Sedimentation, 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.ch12

Editor Information

  1. 4

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

  2. 5

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

Author Information

  1. 1

    School of Conservation Science, University of Bournemouth, Talbot Campus, Fern Barrow, Poole, BH12 5BB, UK

  2. 2

    School of Education, Community and Social Science, Liverpool John Moores University, I.M. Marsh Campus, Barkhill Road, Liverpool L17 6BD, UK

  3. 3

    Department of Geography, University of Liverpool, Liverpool L69 3BX, 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:

  • Newbigging esker system, Lanarkshire, Southern Scotland;
  • Newbigging esker system - ordered variation in stratigraphy and sedimentology within three morphological and spatially distinct landform assemblages;
  • geomorphology and landform assemblages;
  • assemblage b - esker ridges;
  • provenance and ice direction;
  • extensive quarrying through Newbigging ridge system permitting sedimentology;
  • sedimentary assemblages;
  • three models explaining sedimentary sequences exposed in quarry c;
  • schematic model of stages in development of Newbigging esker system showing styles of deposition;
  • palaeogeographical reconstruction

Summary

The Newbigging esker system shows an ordered variation in stratigraphy and sedimentology within three morphological and spatially distinct landform assemblages: a single linear ridge, interrupted and terminated by shallow fans along its length; a series of multiple sub-parallel ridges and shallow fans, and a complex multi-ridge structure. The sedimentology of the system indicates a composite origin and the sedimentary architecture is consistent with the progressive infilling of a large lake basin by successive shifts in the sediment input as the ice margin retreated during the Late Devensian glacial stage. Quarry A consists of stacked overlapping, sand-dominated, wedges formed during a single episode of fan sedimentation as a result of flow expansion at the exit of a tunnel into the lake during a short ice-front still-stand. Quarry B consists of a boulder-rich tunnel-fill deposited in a single episode at the cessation of a high-magnitude discharge event. Quarry C, in contrast, was deposited in multiple episodes and consists of an upwards depositional transition from coarse tunnel deposition, into a subaqueous fan fronting the tunnel portal, and then into a supraglacial outwash sandur deposited in an ice-walled trough created by tunnel unroofing. This case study adds to the depositional models available with which to interpret complex esker and kame assemblages, both in the Scottish Highlands and elsewhere in the world. It also illustrates the need for caution when interpreting such assemblages due to their potential for polygenesis.