- Preferred Labelskos:prefLabel
alluvial fan
- URI
- https://pid.geoscience.gov.au/def/voc/ga/LandformTypes/alluvial-fan ↗Go to the persistent identifier link
- Within Vocab
- Field Geology - Landform Type
| Preferred Labelskos:prefLabel | alluvial fan |
|---|---|
| Definitionskos:definition | A level (<1 percent slope) to very gently inclined complex landform pattern of extremely low relief with a generally fan-shaped plan form. The rapidly migrating alluvial stream channels are shallow to moderately deep, locally numerous, but elsewhere widely spaced. The channels form a centrifugal to divergent, integrated, reticulated to distributary pattern. The landform pattern includes areas that are bar plains - being aggraded or eroded by frequently active channelled stream flow - and other areas comprising terraces or stagnant alluvial plains with slopes that are greater than usual, formed by channelled stream flow but now relict. Incision in the up-slope area may give rise to an erosional stream bed between scarps. |
| Broaderbroader |
fan
|
| Alternative LabelaltLabel | FA01 |
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