Erra Matti Dibbalu
Erra Matti Dibbalu is dissected and stabilized coastal red sediment mounds, located between Visakhapatnam and Bheemunipatnam in Andhra Pradesh.
Formation:
Formed around 12,000 years ago due to sea-land interaction.
Comprises a mixture of sand (40-50%), silt and clay (another 50%) with oxidation imparting the unique red colour.
Significance:
They are geologically important as they represent the geological history of the late Quaternary period and carry