meander belt

meander belt
   The zone within which migration of a meandering channel occurs; the flood plain area included between two imaginary lines drawn tangential to the outer bends of active channel loops. Landform components of the meander-belt surface are produced by a combination of gradual (lateral and down-valley) migration of meander loops and avulsive channel shifts causing abrupt cut-offs of loop segments. Landforms flanking the sinuous stream channel include: point bars, abandoned meanders, meander scrolls, oxbow lakes, natural levees, and flood-plain splays. Meander belts may not exhibit prominent natural levee or splay forms. Flood plains of broad valleys may contain one or more abandoned meander belts in addition to the zone flanking the active stream channel.
   HP

Glossary of landform and geologic terms. 2013.

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Look at other dictionaries:

  • meander belt —    A zone within which meandering of a stream occurs [16] …   Lexicon of Cave and Karst Terminology

  • meander belt — noun : the part of a valley bottom across which a stream shifts its channel from time to time especially in flood …   Useful english dictionary

  • Meander — For other uses, see Meander (disambiguation). A hypothetical stream bed following a tilted valley. The maximum gradient is along the down valley axis represented by a hypothetical straight channel. Meanders develop, which lengthen the course of… …   Wikipedia

  • meander scroll —     a) One of a series of long, parallel, close fitting, crescent shaped ridges and troughs formed along the inner bank of a stream meander as the channel migrated laterally down valley and toward the outer bank.    Compare: meander belt, point… …   Glossary of landform and geologic terms

  • floodplain — flood·plain also flood plain (flŭdʹplān ) n. A plain bordering a river and subject to flooding. * * * ▪ geology also called  Alluvial Plain,         flat land area adjacent to a stream, composed of unconsolidated sedimentary deposits (alluvium)… …   Universalium

  • flood-plain landforms —    A variety of constructional and erosional features produced by stream channel migration and flooding, e.g., backswamp, braided stream, flood plain splay, meander, meander belt, meander scroll, oxbow lake, and natural levee.    HP …   Glossary of landform and geologic terms

  • Missouri River — Coordinates: 38°48′49″N 90°07′11″W / 38.81361°N 90.11972°W / 38.81361; 90.11972 …   Wikipedia

  • bar and channel topography —    A local scale topographic pattern of recurring, small, sinuous or arcuate ridges separated by shallow troughs irregularly spaced across low relief flood plains(slopes generally 2 –6 %); the effect is one of a subdued, sinuously undulating… …   Glossary of landform and geologic terms

  • oxbow —    A closely looping stream meander having an extreme curvature such that only a neck of land is left between the two parts of the stream. (colloquial: northeastern USA) The land enclosed, or partly enclosed, within an oxbow.    Compare: meander… …   Glossary of landform and geologic terms

  • oxbow lake —    The crescent shaped, often ephemeral body of standing water situated by the side of a stream in the abandoned channel (oxbow) of a meander after the stream formed a neck cutoff and the ends of the original bend were silted up.    Compare:… …   Glossary of landform and geologic terms

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