An Encyclopaedia of Indian Archaeology v2.c34.174

v2.c34.174

The Pleistocene [9.8.2] deposits in the form of alluvial deposits are well-preserved in the basin. The Older alluvium is made up of bouldery, pebbly or sandy pebbly gravels and associated silts of about 10 to 15 m thickness. The lateral extent varies in different stretches of the valley and especially in the lower reaches it is about 1 to 1·5 km on either bank. The younger Sub-recent alluvium composed of dark-brown silts is found resting against the older deposits but at places it has partially or completely replaced the older deposits. Two terrace surfaces are observed in the basin. The top surface of the Older alluvium has weathered into black soil and forms a distinct terrace surface at a height of about 10 to 15 m above the normal water-level. The younger inset-type terrace of Sub-recent alluvium is found abutting the older one and occurs at a height of about 5 to 6 m.