Geology

Gases: Composition of Atmosphere Carbon dioxide is meteorologically a very important gas as it is transparent to the incoming solar radiation but opaque to the…

Water Vapour: Composition of Atmosphere Water vapour is also a variable gas in the atmosphere, which decreases with altitude. In the warm and wet tropics,…

Composition of Atmosphere The atmosphere is composed of gases, water vapor, and dust particles. The atmosphere contains many gases, mostly in small amounts, including some…

Barchans: Erosional Landforms Crescent-shaped dunes called barchans with the points or wings directed away from wind direction i.e., downwind, from where the wind direction is…

Sand Dunes: Erosional Landforms Dry hot deserts arc good places for sand dune formation. Obstacles to initiate dune formation are equally important. There can be…

Pediments and Pediplains: Erosional Landforms Landscape evolution in deserts is primarily concerned with the formation and extension of pediments. Gently inclined rocky floors close to…

Playas: Erosional Landforms Plains are by far the most prominent landforms in the deserts. It is a dry, vegetation-free, flat area at the lowest part…

Mushroom and Pedestal Rocks: Erosional Landforms Many rock-outcrops in the deserts easily susceptible to wind deflation and abrasion are worn out quickly leaving some remnants…

Deflation Hollows: Erosional Landforms Weathered mantle from over the rocks or bare soil, gets blown out by persistent movement of wind currents in one direction.…

Beaches and Dunes: Depositional Landforms Beaches are characteristic of shorelines that are dominated by deposition but may occur as patches along even the rugged shores.…