Explain depositional work of wind.
Answers
Erosion and deposition are also caused by the actions of the wind that is blown in the earth's surface. It can result in the formation of geographical features though erosion, transportation and deposition. Many geographical features are created by the actions of wind. Some of the depositional works of the wind are:
• Loess- Loess refers to the deposition and accumulation of the fine silt and porous sand over the regions by the action of the blowing winds. It is largely found in the deserts and arid regions. The loess plateau in China has the densest deposit of loess in the world.
• Sand dunes- It is the deposition action of the wind. It is formed mainly from the sands carried during sandstorms in deserts. With the actions of wind huge amounts of sand gets carried and deposited in different places. These mounds and piles of sand deposited in different places are called sand dunes. Dune 7 in Namibia is the world's largest sand dune.
• Barchan- It is the deposition action of the wind. It is formed mainly from the sands carried during sandstorms in deserts. They are the hemispherical and crescent-shaped dunes that have a gentle upward slope on the windward side and sharp vertical slope on the other leeward side. It is a common feature in the Sahara desert in Egypt.
• Transverse dunes- It is the deposition action of the wind. It is formed mainly from the sands carried during sandstorms in deserts. They are asymmetrical, lopsided and disjoint in nature. They are formed by the action of the subsequent blowing of fast and slow winds of the same direction. They are largely found in Medano Creek in the U.S.
• Longitudinal dunes- It is the deposition action of the wind. It is formed mainly from the sands carried during sandstorms in deserts. They are symmetrically formed dunes in the same direction as the wind blow. They are mostly even, regular and proportional. They are most common in Sahara desert.