Palaeohydrological Characteristics of the Amlekhganj Formation in Central Nepal Sub Himalaya

Authors

  • P. D. Ulak Department of Geology, Tri-Chandra Campus, Tribhuvan University, Ghantaghar, Kathmandu
  • K. Nakayama Department of Geoscience, Shimane University. Matsue 690-8504, Japan

DOI:

https://doi.org/10.3126/jngs.v19i0.32081

Keywords:

Palaeohydrology, Laser diffraction, Amlekhganj Formation, sub Himalaya, central Nepal

Abstract

The palaeohydrological studies of the Middle Member of the Amlekhganj Formation, Nepal Sub Himalaya, are based on the grain size and flow depth for values of the palaeoslope gradient, palaeovelocity, and palaeodischarge. The grain size distribution was measured by using the laser diffraction particle size analyser (SALD 3000S; Shimazu), and the flow depth was estimated from the autogenic fining upward succession. The measured values of the palaeoslope gradient, palaeovelocity, and palaeodischarge were 1.21-1.88x10-6 m/m, 0.67-0.78 m/s, and 103-105 m3/s, respectively. The palaeoslope is comparable to the slopes of such modern Himalayan frontal fans as the Kosi Fan.

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Published

1999-12-01

How to Cite

Ulak, P. D., & Nakayama, K. (1999). Palaeohydrological Characteristics of the Amlekhganj Formation in Central Nepal Sub Himalaya. Journal of Nepal Geological Society, 19, 9–18. https://doi.org/10.3126/jngs.v19i0.32081

Issue

Vol. 19 (1999)

Section

Articles

License

© Nepal Geological Society