alluvial plain

Học thuật
Thân thiện
alluvial plain

A wide alluvial plain stretches between the river and the distant mountains.

Definition
  1. Noun:
    • A flat area of land: An extensive, level geographical feature.
    • Formed by sedimentary deposits: Created over time by the repeated accumulation of alluvial material (silt, sand, clay, gravel).
    • Deposited by flowing water: The material is transported and laid down by the action of rivers or streams.
Usage
  • The term is used to describe a specific type of plain with a known geological origin.
  • It is often used in geographical, agricultural, and environmental contexts.
Examples
  • Noun:
    • The Nile River flows through a vast alluvial plain, making the land exceptionally fertile.
    • The city was built on an alluvial plain, which explains its flat topography.
    • Farmers prefer to cultivate crops on alluvial plains due to the nutrient-rich soil.
Advanced Usage
  • "Ancient alluvial plain": Refers to a plain formed by alluvial deposits in the distant geological past.
    • The researchers discovered fossils in an ancient alluvial plain.
  • "Coastal alluvial plain": A plain formed by river deposits near a coastline.
    • The coastal alluvial plain is vulnerable to both river flooding and sea-level rise.
Variants and Related Words
  • Alluvial fan (n): A fan-shaped deposit of sediment formed where a fast-flowing stream flattens and spreads.
  • Floodplain (n): An area of low-lying ground adjacent to a river, formed mainly of river sediments and subject to flooding. (Note: A floodplain is a type of alluvial plain).
  • Delta (n): A landform at the mouth of a river where it flows into an ocean or lake, built up by sediments. (Note: A delta is a specific, often wetland, type of alluvial plain).
Synonyms
  • Floodplain (when referring to the modern, active area adjacent to a river).
  • Alluvial flat.
Related Terms (Not Phrasal Verbs)
  • Alluvium (n): The loose, unconsolidated soil or sediments eroded and deposited by water.
  • Sedimentation (n): The process of settling or being deposited as sediment.
alluvial plain

A wide alluvial plain stretches between the river and the distant mountains.

Noun
  1. a flat resulting from repeated deposits of alluvial material by running water

Từ đồng nghĩa