In geography, a plain, commonly known as flatland, is a flat expanse of land that generally does not change much in elevation, and is primarily treeless. Plains occur as lowlands along valleys or at the base of mountains, as coastal plains, and as plateaus or uplands.

2023年10月19日 · Plains form in many different ways. Some plains form as ice and water erodes, or wears away, the dirt and rock on higher land. Water and ice carry the bits of dirt, rock, and other material, called sediment, down hillsides to be deposited elsewhere. As layer upon layer of this sediment is laid down, plains form.

Usually, they are formed from horizontally bedded rocks relatively undisturbed by crust movements of the Earth. This type of plain landform is usually created by an uplifting diastrophic movement of a large landmass. Examples of structural plain landforms are: Erosional plains:

2018年9月28日 · The Great Plains fit the depositional pattern of plain landforms. Since the collision of several small continents a billion years ago, the Great Plains have been a relatively stable area dominantly developed through the deposition of sediments eroded from the Rocky Mountains to the west.

Plains are large stretches of flat land. They are, generally, not more than 200 metres above the mean sea level. Most of the plains are formed by rivers and their tributaries.

Plain landforms are postulated to have been formed from flowing lava deposited from hills and mountains by ice, water, wind or erosion. Before a landform can be referred to as plain, it must exhibit the following characteristics: It must be low in …

Most of the plains are formed by rivers and their tributaries. The rivers flow down the slopes of mountains and erode them. They carry forward the eroded material.

Plains found on the earth’s surface have been formed in different ways as follows: (1) Most of the plains have been originated due to upliftment or emergence of submerged landmasses under epicontinental seas due to diastrophic move­ments. The Great Plains Province of the USA is a burning example of this process of the origin of plains.

Glaciolacustrine plains form when the lakes in the continental ice sheets drain and leave the rocky debris within behind. The most recent ice age, the Wisconsin, was a drive for glacial lake formation and the glaciolacustrine plain formation that followed. [3] Glacial lakes are grouped into categories which represent the conditions in which ...

2018年6月1日 · In this article, we take a look at the different types of plains and their mechanism of formation. Also called a sandur, an outwash plain is formed by glaciers. Such a plain is formed when a glacier deposits sediments at its terminus. As a glacier moves, it erodes the bedrock and carries the eroded sediments downstream.