Diachronous deformation along the base of the Himalayan metamorphic core, west-central Nepal

2016 ◽  
Vol 128 (5-6) ◽  
pp. 860-878 ◽  
Author(s):  
Rohanna Gibson ◽  
Laurent Godin ◽  
Dawn A. Kellett ◽  
John M. Cottle ◽  
Douglas Archibald
Keyword(s):  
Central Nepal ◽  
West Central ◽  
Metamorphic Core

Structural and microtectonic analyses of Barpak of Gorkha district, west-central Nepal

2020 ◽  
Vol 60 ◽  
pp. 163-179
Author(s):  
Sameer Poudel ◽  
Lok Mani Oli ◽  
Lalu P. Paudel
Keyword(s):  
Dynamic Recrystallization ◽  
Geological Mapping ◽  
Dolomitic Marble ◽  
Rock Types ◽  
Central Nepal ◽  
Phase Deformation ◽  
West Central ◽  
Shear Sense ◽  
Shear Sense Indicators ◽  
Cylindrical Folds

Geological mapping was carried out in the Barpak-Bhachchek area of the Daraudi River valley, Gorkha district, West-Central Nepal for structural analysis. The area comprises rocks of the Higher Himalayan Crystalline and the Lesser Himalayan Sequence.  Pelitic and psammitic schist, quartzite, calc-quartzite, dolomitic marble, graphitic schist, gneiss are the main rock types within the Lesser Himalayan Sequence,  whereas banded gneiss and quartzite form a significant portion of the Higher Himalayan Crystalline in the study area. The area is affected by poly-phase deformation. Lesser Himalayan Sequence has suffered five deformational phases (DL1-DL2, D3-D5) whereas the Higher Himalayan Crystalline has suffered four deformational events (DH1, D3-D5). The Lesser Himalayan Sequence lying to the northern limb of the Gorkha-Kuncha Anticlinorium is contort into doubly plunging to dome-and-basin-like en echelon type of non-cylindrical folds as Baluwa Dome and Pokharatar Basin (DL2 and D4). The direction of shearing as indicated by shear sense indicators (C' Shear band and Mica fish) is top-to-south coinciding with regional sense of shear related to the MCT propagation. The dynamic recrystallization direction, obtained from rock dominant with phyllosilicate minerals is top-to-south and coincides with mineral lineation and indicate the mineral lineation is contemporary with dynamic recrystallization during the MCT propagation.

scholarly journals Geology and Mineral Resources of Phalamdada-Dhuwakot Section of West-Central Nepal, Lesser Himalaya

2018 ◽  
pp. 59-64
Author(s):  
Arjun Bhattarai ◽  
Kabiraj Paudyal
Keyword(s):  
Mineral Resources ◽  
Geological Mapping ◽  
Metamorphic Rocks ◽  
Low Grade ◽  
Lesser Himalaya ◽  
Central Nepal ◽  
West Central ◽  
Metallic Mineral ◽  
Geological Control ◽  
Core Part

Geological mapping was carried out along the Phalamdanda-Dhuwakot section of west-central Nepal in the Lesser Himalaya. The aim of geological mapping was to prospect the metallic mineral resources in the area especially to assess the geological control of mineralization as prognostic mapping and study the genesis of mineralization. The area has developed low-grade metamorphic rocks of the Nawakot Group. Geological rock units like the Kuncha Formation, Fagfog Quartzite, Dandagaon Phyllite, Nourpul Formation and Dhading Dolomite are mapped in the area. Jal Bhanjyang Thrust carries the more older rocks of the Nourpul Formation over the Dhading Dolomite. The area is highly deformed as indicated by presence of folds. Outliers of Fagfog Quartzite and Dhading Dolomite are developed at the core part of the syncline. Phalamdada iron and Anbu Khaireni as well as Dharapani copper are the major metallic deposits reported in the area. Both deposits are considered as the syngenetic in nature. Bulletin of Department of Geology, vol. 20-21, 2018, pp:59-64

Variation and change in fertility in West Central Nepal

Human Ecology ◽  
1992 ◽  
Vol 20 (2) ◽  
pp. 225-248 ◽  
Author(s):  
Steven Folmar
Keyword(s):  
Central Nepal ◽  
West Central

scholarly journals Land cover change in Himalaya with special reference to forest disturbance: A case of Bharse area, Lesser Himalaya, West Central Nepal

2008 ◽  
Vol 2 (4) ◽  
pp. 138-139
Author(s):  
Chinta Mani Gautam ◽  
Teiji Watanabe
Keyword(s):  
Land Cover ◽  
Special Reference ◽  
Land Cover Change ◽  
Forest Disturbance ◽  
Lesser Himalaya ◽  
Special Issue ◽  
Central Nepal ◽  
West Central

Himalayan Journal of Sciences Vol.2(4) Special Issue 2004 pp.138-9

scholarly journals Paleohydrological reconstruction of the Siwalik Group along the Tinau Khola section, west-central Nepal Himalaya

2009 ◽  
Vol 39 ◽  
Author(s):  
Prakash Das Ulak
Keyword(s):  
Slope Gradient ◽  
Nepal Himalaya ◽  
Sedimentary Sequences ◽  
Central Nepal ◽  
Frontal Part ◽  
West Central ◽  
Channel Slope ◽  
Siwalik Group ◽  
The Himalaya ◽  
Velocity Channel

Neogene fluvial sedimentary sequences of the Siwalik Group are extensively accumulated in the southern frontal part of the Himalaya and well exposed in the Tinau Khola section of the west-central Nepal Himalaya. The group reveals a coarsening­ upwards succession in general but many fining-upwards fluvial successions on a scale from several to tens of metres is established in each lithological unit. The paleohydrological characteristics have been estimated using thickness of fining upwards fluvial successions, their grain diameters, and bedforms. The paleohydrology suggests an increase in flow velocity, channel slope gradient, and discharge of the fluvial system. Paleovelocity varies from 0.17 to 5.31 m/s, paleochannel gradient and paleodischarge change from l.13x10-5 to 7.33x10-4 m/m and 101 to 104 m3/s, respectively towards the stratigraphic top. These progressively changing paleohydrological characteristics reflect the southward propagation of thrusts caused by the upheaval of the Himalaya.

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