Plain

Etymology

Plain is the female one of lime pit (which survives in some expressions) which would come from Latin planus, planed with the direction of “dish, linked, plane”. It eliminated the form plagne or feels sorry for which came from popular Latin plania .

Qualification of the plains according to their geographical context

the abyssal plain : underwater plain generally located from -4000 to -6000 meters, it made uneven weak but notable which leads to the oceanic dorsal , its extent is generally imposing: about hundreds even of thousands of kilometers of extension, it made up of Sédiment S continental is rejected with the broad one.
the plain of altitude (or Altiplano).
the alluvial Flat (synonymous: reads major of a River): topographic surface, with weak made uneven, in bottom of valley. It is consisted Alluvions (remains, materials) deposited at the time of believed of the River. The alluvial plain belongs to the floodplain of a River; however installations of bank (Dam) make it possible to reduce the risk of flood.
the deltaic plain : it is with the Confluence alluvial plain - of which it is the prolongation - and from the Mer, it receives sediments of the two shares.
the Flat of spreading: a plain of accumulation, its principal tributaries are the Torrent S or the glacial Moraine S.
the littoral plain: coastal surface enriched by the continental sediments not covered.
the maritime plain: extended become not-submarine by the Tide S, in the past, these zones were generally marshes.
the Peneplain: surfaces levelled by the coalescence of river basins.

Some large plains

the plain of Alsace (trough fault)
the Flat of Po

Homonyms derived from plain

the Plaine (river) is a river Lorraine taking its source in the Vosges to throw in the Meurthe (river).
In Heraldic, the flat is a part which appears in the blazons.
In the French history, the Plaine is a current policy of the French revolution.
the Plaine Saint-Denis, town of Seine-Saint-Denis (93)

References

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