• They are aligned in a north – east to south – west direction.
  • They run for about 800 km between Delhi and Ahmedabad in Gujarat, with the width and height decreasing from Gujarat to Delhi.
  • They were formed during the Aravalli–Delhi Orogeny involving the collision of microplates, which later became part of the Indian plate.

  • They continue up to Haridwar and are buried under the alluvial Ganga plains.The 
  • Aravallis have an average elevation in the range of 400-600m.
    • Mt. Gurushikhar (1722m) is the highest point of the Aravallis.The 
  • Aravallis share the western border with the Thar desert and the eastern border with the Mewar plateau.

Significance

  • Serves as a natural barrier against desertification and sandstorms.
  • Source of important rivers such as the Chambal, Sabarmati, and Luni.
  • Provide essential resources like fuelwood, fodder, fruits, and commercial products.
  • Helps in regulating precipitation through evapotranspiration.

 

Source: The Hindu