Johnson, M.D., Schomacker, A., Benediktsson, Í.Ö., Geiger, A.J. , Ferguson, A. and Ingólfsson, Ó. (2010) Active drumlin field revealed at the margin of Múlajökull, Iceland: a surge-type glacier. Geology, 38(10), pp. 943-946. (doi: 10.1130/G31371.1)
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Abstract
Recent marginal retreat of Múlajökull, a surge-type outlet glacier of Hofsjökull, Iceland, has revealed a drumlin fi eld consisting of more than 50 drumlins. The drumlins are 90–320 m long, 30–105 m wide, 5–10 m in relief, and composed of multiple beds of till deposited by lodgment and bed deformation. The youngest till layer truncates the older units with an erosion surface that parallels the drumlin form. Thus, the drumlins are built up and formed by a combination of subglacial depositional and erosional processes. Field evidence suggests each till bed to be associated with individual recent surges. We consider the fi eld to be active in the sense that the drumlins are shaped by the current glacial regime. The Múlajökull fi eld is the only known active drumlin field, and is therefore a unique analogue to Pleistocene drumlin fi elds.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Geiger, Dr Alessa |
| Authors: | Johnson, M.D., Schomacker, A., Benediktsson, Í.Ö., Geiger, A.J., Ferguson, A., and Ingólfsson, Ó. |
| College/School: | College of Science and Engineering > School of Geographical and Earth Sciences |
| Journal Name: | Geology |
| Publisher: | Geological Society of America |
| ISSN: | 0091-7613 |
| ISSN (Online): | 1943-2682 |
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