[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.c45.759 # An Encyclopaedia of Indian Archaeology v2.c45.759 An Encyclopaedia of Indian Archaeology v2.c45.759 - **Language:** English ### [v2.c45.759](https://indike.org/pramana/ins.reference.ghosh-1989.v2.c45.759) Like several other streams which flow in the sub-Himalayan region this river is flanked by high-level terraces on both banks. A sequence of three terraces on the Sirsa and its tributary \*nullahs\* has been noticed on the s. and s.-e. of Nalagarh town, at approximate heights of 23 m., 13·5 m and 3·5 m respectively above the present stream level. These terraces are cut-and-fill type developed on the deposits consisting gravels and silts and resting on the Upper Siwalik Boulder Conglomerate. Parts of the terrace deposits are the remnants of ancient colluvial fans and cores. Only the higher two terraces have so far proved to be implementiferous. The relation of the terraces with the Pleistocene glacial sequence of the Himalayas has not yet been understood. On stratigraphic consideration the Nalagarh terraces appear to be post-Siwalik in age, i.e., not older than the Late Mid-Pleistocene period \[9.8.2\]. - [Previous: v2.c45.758](https://indike.org/pramana/ins.reference.ghosh-1989.v2.c45.758) - [Next: v2.c45.760](https://indike.org/pramana/ins.reference.ghosh-1989.v2.c45.760) - [Up: v2.c45](https://indike.org/pramana/ins.reference.ghosh-1989.v2.c45) --- Source: [https://indike.org/pramana/ins.reference.ghosh-1989.v2.c45.759](https://indike.org/pramana/ins.reference.ghosh-1989.v2.c45.759) · Pramāṇa