Wa. Mitchell, DRUMLINS IN ICE-SHEET RECONSTRUCTIONS, WITH REFERENCE TO THE WESTERN PENNINES, NORTHERN ENGLAND, Sedimentary geology, 91(1-4), 1994, pp. 313-331
Drumlin morphology and distribution can be used to determine the palae
oglaciological conditions under which subglacial bedforms were created
by Late Pleistocene ice sheets. Detailed field mapping of part of the
large drumlin fields in northern England, in particular the identific
ation of areas of superimposed drumlins, has been shown to be of signi
ficance in the delimitation of the ice divide within the area. The ove
rall distribution of the subglacial bedforms has also been used to def
ine the extent of ice streams within this part of the Late Devensian (
Dimlington Stadial) ice sheet. Based on the physical principles which
underlie the deformational model of drumlin formation and present-day
glaciological information on subglacial ice sheet conditions, variatio
ns in drumlin morphology have allowed a first attempt at reconstructin
g areas of high (> 100 kPa) and low (< 20 kPa) basal driving stresses
for this part of the ice sheet.