A History of Agriculture in India v1.c8.s2.t1.6

v1.c8.s2.t1.6

sandy composition, generally light in colour, about 10,000 years old, and (ii) *bhangar*, or the older alluvium of Pleistocene date, of more clayey composition, generally of dark colour, and full of pebbles or *kankar*. The soils differ in consistency from drift sand to loams, and from fine silts to stiff clays. A few pebble beds are also occasionally met with. The presence of impervious clays obstructs the drainage, and also promotes the accumulation of injurious salts of sodium and magnesium, which make the soils sterile.