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Paleoglaciology
| Term | Definition |
|---|---|
| What do ice-molded or streamlined subglacial landforms (grooves, lineations, flutes, drumlins) indicate? | fast glacial flow |
| What do non-ice-molded landforms (geometrical and crevasse-squeeze ridges) | Surging |
| What might ribbed moraines be associated with? | Inward-transgressive subglacial thawing |
| What do abundant ice-marginal landforms indicate? | Stationary ice |
| Where do eskers form and what do they indicate? | Eskers form near ice margin and indicate warm, receding ice |
| What do meltwater channels (subglacial or ice-marginal) indicate? | Incremental recession |
| What do striae show? | Ice flow direction and basal thermal regime |
| What do unmodified preglacial landforms show? | Ice-free or cold-based areas (e.g., Wisconsin driftless area) |
| extent | terminal moraines, marginal meltwater channels, eskers |
| thickness | trimlines, erratics, spillways, raised shorelines and beaches |
| patterns of ice discharge | lineations, striations, subglacial channels, eskers, erratic dispersal |
| ice divides and frozen bed areas | preglacial and periglacial landforms, timing of retreat and readvances); |
Created by:
bizz1441
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