Discrepancies and Research Gaps on the Lithostratigraphy of the Jajarkot Thrust Sheet, Western Nepal Himalaya

Authors

  • Sunil Lamsal Central Department of Geology, Institute of Science and Technology, Tribhuvan University https://orcid.org/0009-0000-2330-1592
  • Ram Bahadur Shah Central Department of Geology, Institute of Science and Technology, Tribhuvan University
  • Kabi Raj Paudyal Central Department of Geology, Institute of Science and Technology, Tribhuvan University https://orcid.org/0000-0003-3436-6572

DOI:

https://doi.org/10.3126/jist.v28i2.61172

Keywords:

Jajarkot Thrust Sheet, lesser Himalaya, stratigraphy, western Nepal

Abstract

The interaction between the Indian and Asian plates has led to the formation of imbricated thrust sheets in the Himalayas. This study focuses on a segment of the Jajarkot Thrust Sheet, characterized by metamorphic rocks, including garnet-biotite schist, biotite schist, quartzite interlayers, and marbles. The upper stratigraphic sequence of this thrust sheet contains fossiliferous rocks from the Paleozoic era. Prior classifications have identified three main units: Chaurjhari Formation, Thabang Formation, and Jaljala Formation. However, the Department of Mines and Geology recognizes two units: Siuri Formation and Surbang Formation. This discrepancy, along with inconsistent terminologies like "Jajarkot nappe" and "Jajarkot klippe", highlights the need for a unified stratigraphic framework. Such clarity is crucial for assessing mineralization potentials, particularly for iron and copper, in western Nepal and understanding the thrust sheet's tectonic history within the broader Himalayan context.

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Published

2023-12-17

How to Cite

Lamsal, S., Shah, R. B., & Paudyal, K. R. (2023). Discrepancies and Research Gaps on the Lithostratigraphy of the Jajarkot Thrust Sheet, Western Nepal Himalaya. Journal of Institute of Science and Technology, 28(2), 53–62. https://doi.org/10.3126/jist.v28i2.61172

Issue

Section

Review Articles