Thanjavur, Thiruvarur, Nagapattinam, Villupuram, Cuddalore, Thirunelveli, and Kanyakumari districts in Tamil Nadu have ___________.
In coastal regions some alluvial deposits are formed due to wave action. Coastal and deltaic areas of Tamil Nadu includes Thanjavur, Nagapattinam, Tiruchirapalli, Cuddalore, Kancheepuram, Tirunelveli, Tuticorin, Kanyakumari and Sivaganga districts have alluvial soils.