alluivial

Updated: June 2, 2025

Baird Smith, Italian Irrigation, vol. i., p. 196. The necessity of irrigation in the great alluivial plain of Northern Italy is partly explained by the fact that the superficial stratum of fine earth and vegetable mould is very extensively underlaid by beds of pebbles and gravel brought down by mountain torrents at a remote epoch.

George P. Marsh - The Earth as Modified by Human Action