మైదానం

సమతలంగా ఉండే పల్లపు ప్రాంతాలను మైదానం అని అంటారు.

రకాలు

Part of the plain that surrounds Lightning Ridge, New South Wales, Australia

• సముద్రతీర మైదానం, సముద్ర తీర ప్రాంతాలలోని పల్లపు ప్రదేశాలు. ముఖ్యంగా ఆనుకొనివుండే కొండలు లోయల్తో పోల్చితే. .
• Fluvial plains are formed by rivers, and may be one of these overlapping types:
  • వరద మైదానాలు, adjacent to a stream, river, lake or wetland that experiences occasional or periodic flooding.
  • Alluvial plain, formed over a long period of time by a river depositing sediment on its floodplain or bed which becomes alluvial soil. The difference between a floodplain and an alluvial plain is that the floodplain represents the area experiencing flooding fairly regularly in the present or recently, whereas an alluvial plain includes areas where the floodplain is now and used to be, or areas which only experience flooding a few times a century.
  • Scroll plain, a plain through which a river meanders with a very low gradient.
• Lacustrine plain, a plain that originally formed in a lacustrine environment, that is, as the bed of a lake.
• లావా మైదానాలు, formed by sheets of flowing lava.
• Glacial plains are formed by the movement of glaciers under the force of gravity:
  • Till plain, a plain of glacial till that forms when a sheet of ice becomes detached from the main body of a glacier and melts in place depositing the sediments it carries. Till plains are composed of unsorted material (till) of all sizes.
  • Sandur (plural sandar), a glacial outwash plain formed of sediments deposited by meltwater at the terminus of a glacier. Sandar consist mainly of stratified (layered and sorted) gravel and sand.