[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Reference works](https://indike.org/pramana/ins.reference) › [An Encyclopaedia of Indian Archaeology](https://indike.org/pramana/ins.reference.ghosh-1989) › v2.c40.251 # An Encyclopaedia of Indian Archaeology v2.c40.251 An Encyclopaedia of Indian Archaeology v2.c40.251 - **Language:** English ### [v2.c40.251](https://indike.org/pramana/ins.reference.ghosh-1989.v2.c40.251) The trough nature of the c. Narmada valley formed by the tectonic processes favoured the massive accumulations of sediments, at places reaching over 150 m in thickness. The occurrence of sites of Mesolithic \[4.5\], Chalcolithic \[4.14.5\] and historical periods besides those of the Palaeolithic \[4.2-4\] show that the region provided suitable environment throughout the Quaternary. This mighty river forms a sort of barrier between n. and s. India but since it is fordable at some points it did not cause hindrance to n.-s. movements of animals and human beings at any time. - [Previous: v2.c40.250](https://indike.org/pramana/ins.reference.ghosh-1989.v2.c40.250) - [Next: v2.c40.252](https://indike.org/pramana/ins.reference.ghosh-1989.v2.c40.252) - [Up: v2.c40](https://indike.org/pramana/ins.reference.ghosh-1989.v2.c40) --- Source: [https://indike.org/pramana/ins.reference.ghosh-1989.v2.c40.251](https://indike.org/pramana/ins.reference.ghosh-1989.v2.c40.251) · Pramāṇa