Journal - Observation on the geology of the Karnali region, west Nepal

Observation on the geology of the Karnali region, west Nepal

Daigoro Hayashi, Yasushi Fujii, Toshifumi Yoneshiro and Koshiro Kizaki

Department of Marine Sciences, University of the Ryukyus

Okinawa, 903-01, Japan

Jour. Nep. Geol. Soc., Vol. 4, Special Issue, 1984, 29-40


The Karnali region is occupied by thick piles of the sediments belonging to the Midland supergroup and the overlying Himalayan gneiss group. The Himalayan gneiss group is correlative to the Vaikrita of Valdiya (1980), and the Midland supergroup may be correlated with the Tejam group and the Jaunsar nappe including a part of the Chail nappe. Unline some earlier observations, the Midland supergroup is believed to be an autochthonous basement overlain by the allochthonous Himalayan gneises, and that the inverted metamorphism is attributed to the heat from the MCT (Arita, 1983; Maruo and Kizaki, 1983) rather than as a result of multiple nappe structure.

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