Journal - Palaeohydrology of the Siwalik Group along the Bakiya Khola section, central Nepal Himalaya

Palaeohydrology of the Siwalik Group along the Bakiya Khola section, central Nepal Himalaya

Prakash Das Ulak

Department of Geology, Tri-Chandra Campus, Tribhuvan University, Kathmandu, Nepal

Jour. Nep. Geol. Soc., Vol. 26, 2002, 49-58


Abstract

Middle Miocene to Early Pleistocene fluvial sediments of the Siwalik Group comprises many fining-upward cycles from several to tens of metres thick. It is a foreland basin sediment with a coarsening-upward succession as a whole. The palaeohydrology and evolution of the fluvial depositional system of the group in the Bakiya Khola section of central Nepal was estimated using the grain size analyses, sedimentary structures and thickness of fining-upward cycles. Stratigraphically from older to younger sequence, the velocity and channel gradient of the palaeofluvial system varies from 0.28 m/s to 3.3 m/s and 2.9x10-5 to 3.4x10-4 m/m, respectively. The progressive changes in palaeovelocity and palaeochannel gradient reflect the southward propagation of thrust activities in the Himalayan front.

Member Login
NEWS AND EVENTS
  • May
    21

    Nepal Geological Society has organized a press meeting on the memory of 2015 Gorkha Earthquake on 2075/1/12 at the conference hall of Department of Irrigation, Jawalakhel

  • Feb
    06

    Nepal Geological Society organized a one day workshop on Earthquake Safety Day-2074 in 2074/10/13 at the conference hall of the United World Trade Center, Tripureshwor, Kathmandu, Nepal in association with Private and Boarding School Association Nepal (BAPSON Kathmandu Province).

Activities and Information

Activities of 17th and 18th Executive Committee
Nepal Geological Society
P.O.Box No. 231
Kathmandu, Nepal
FREEPHONE: +977-01-4437874
Email: info@ngs.org.np