Significance of Dissected Deep-Seated Landside Topography and Hydrothermal Alteration in Active Mountain Belts

Authors

  • Shuichi Hasegawa Kagawa University, Takamatsu, Japan Author
  • Ranjan Kumar Dahal Tribhuvan University, Lalitpur, Nepal Author

DOI:

https://doi.org/10.64862/

Keywords:

Dissected landside topography, Hydrothermal alteration, Active Mountain belts

Abstract

Overlooked geological risks in active mountain belts of non-volcanic regions like the Himalayas include large-scale dissented landslide topography and hydrothermal alteration from past igneous activity. The keynote lecture will present case studies from the Shikoku Mountains in Southwest Japan and their application to the Nepal Himalayas.

References

Hasegawa, S., and Dahal, R. K. (2017). Engineering geology in Nepal, locale of ARC-11. Journal of the Japan Society of Engineering Geology, 58 (2), 121–125. (In Japanese)

Hasegawa, S. (2009). 14 Ma granitic batholith which works behind the scene of neotectonics in Southwest Japan. Electric Power Civil Engineering, (341), 3–8. (In Japanese)

Hasegawa, S. (1991). Large-scale rock mass slides along the fault scarp of the Median Tectonic Line in northeastern Shikoku, Southwest Japan. In D. H. Bell (Ed.), Landslides (pp. 119–125). Balkema.

Hasegawa, S., Yoshida, Y., Akagi, W., Tamura, E., and Kanbara, D. (2006). Rock mass characterization for tunnelling by the geological history of hydrothermal alteration and landsliding. Proceedings of the International Association for Engineering Geology and the Environment (IAEG), Paper No. 580.

Hasegawa, S., Dahal, R. K., Yamanaka, M., Bhandary, N. P., Yatabe, R., and Inagaki, H. (2009). Causes of large-scale landslides in the Lesser Himalaya of central Nepal. Environmental Geology, 57, 1423–1434. https://doi.org/10.1007/s00254-008-1420-z

Kanbara, D., Hasegawa, S., Nonomura, A., Chiba, T., and Kimura, M. (2021). New index for identifying large-scale dissected landslides along the Median Tectonic Line. Japan Society of Engineering Geology, 62 (5), 296–307. https://doi.org/10.5110/jjseg.62.296

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Published

2025-11-27

How to Cite

Significance of Dissected Deep-Seated Landside Topography and Hydrothermal Alteration in Active Mountain Belts. (2025). Asian Journal of Engineering Geology, 2(Sp Issue), 423-424. https://doi.org/10.64862/

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