Preservation of basal-ice sediment texture in ice-sheet moraines
Abstract Ice-sheet moraines near Kangerlussuaq in west Greenland inherit distinctive particle-size distributions from basal ice, although debris structures from the basal ice are commonly destroyed by deposition and resedimentation processes. The abundance of clay and silt in the`dispersed faciesa b...
| Other Authors: | |
|---|---|
| Format: | Text |
| Language: | English |
| Subjects: | |
| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1038.281 |
| Summary: | Abstract Ice-sheet moraines near Kangerlussuaq in west Greenland inherit distinctive particle-size distributions from basal ice, although debris structures from the basal ice are commonly destroyed by deposition and resedimentation processes. The abundance of clay and silt in the`dispersed faciesa basal ice at the ice-sheet margin is clearly re#ected in the sedimentology of the ice-sheet moraine. Geographical variations in the texture or grain size of moraine sediments may thus re#ect geographical variations in basal ice. This o!ers a new approach to reconstructing the basal-ice characteristics, and hence the thermal and dynamic properties, of former ice sheets. |
|---|