alluvial cone
- noun
- /əˈluːviəl koʊn/
- Specialized
:
cono aluvial
- Over time, the floodwaters created a broad alluvial cone of sand and gravel.
Examples
-
Sediments carried by the river settled into an alluvial cone at the valley entrance.
-
Many towns have been built on alluvial cones formed at the base of nearby hills.
-
The alluvial cone formed at the river's mouth.
-
Many alluvial cones can be found in mountainous regions.
-
Many towns have been built on alluvial cones formed at the base of nearby hills.
-
Over time, the floodwaters created a broad alluvial cone of sand and gravel.
-
Sediments carried by the river settled into an alluvial cone at the valley entrance.
Synonyms
1
7.5
A fan-shaped area of sand and stones that forms where a fast stream slows and spreads at a mountain base
Surface Forms
Morphology
The meaning is directly and transparently built from 'alluvial' (river-deposited sediment) + 'cone' (a cone-shaped mass), so a learner who knows both words can infer it denotes a cone-shaped deposit of river sediment. This is a literal, compositional noun phrase describing physical shape and material and follows common cross-linguistic patterns, making it accessible to a B1 learner.
Etymology
Alluvial cone gets its name from the picture it makes: alluvial means material 'carried by water' and cone means a wide, cone-shaped pile. When a fast stream leaves the mountain and slows down, it drops mud, sand and stones in a fan shape, so alluvial cone means that fan-shaped pile of earth at the mountain base.