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western Nepal

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Journal Article
Journal: GSA Bulletin
Published: 18 June 2025
GSA Bulletin (2025)
...Michael Daniel; Michael Murphy; Alexander C. Robinson; Andrew K.R. Hoxey; Suoya Fan; Sean Bemis; Elizabeth Curtiss; Michael Taylor; Deepak Chamlagain; Manoj Kafle; Richard Styron Active deformation within the Himalayan thrust wedge in western Nepal is partitioned between slip along the Main...
Journal Article
Journal: GSA Bulletin
Published: 09 June 2025
GSA Bulletin (2025)
... that are truncated and offset by active faults along the Western Nepal Fault System (WNFS), a right-slip fault system that accommodates orogen-parallel strain in the West Nepal Himalaya between Simikot and Tansen. Neotectonic field investigations in this study focus on the northwestern segment of the WNFS...
Journal Article
Published: 01 June 2025
Jour. Geol. Soc. India (2025) 101 (6): 809–814.
... at the recording station with distinct onsets of different seismic phases. We have modeled the time series of these CoSEM perturbations for surface wave dispersion, treating these as pseudo-seismograms, for the 2023−11−03 western Nepal earthquake (M 6.4). The time series were recorded at seven magnetotelluric...
FIGURES
First thumbnail for: Coseismic Electromagnetic Signals as Pseudo-Seismo...
Second thumbnail for: Coseismic Electromagnetic Signals as Pseudo-Seismo...
Third thumbnail for: Coseismic Electromagnetic Signals as Pseudo-Seismo...
Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 05 July 2024
Lithosphere (2023) 2023 (Special 14): lithosphere_2023_265.
... of the central Himalaya, PT2 is less distinct in western Nepal, reflecting along-strike changes in MHT geometry and/or a migrating locus of midcrustal deformation, the details of which have important implications for seismic hazard in western Nepal. New mineral cooling ages (apatite and zircon U-Th/He...
FIGURES
First thumbnail for: Late Cenozoic Tectonic Evolution of the <span clas...
Second thumbnail for: Late Cenozoic Tectonic Evolution of the <span clas...
Third thumbnail for: Late Cenozoic Tectonic Evolution of the <span clas...
Journal Article
Published: 05 July 2023
Geological Magazine (2023) 160 (7): 1262–1281.
... zone (Jagat Shear Zone (JSZ)) in the Himalayan metamorphic core in Central-Western Nepal. In situ U-Th-Pb monazite petrochronology constrains the timing of top-to-the-S/SW shearing between 28–27 Ma and 17 Ma. Burial and prograde metamorphisms in footwall rocks were linked to thrust-sense movement along...
FIGURES
First thumbnail for: Constraining the evolution of shear zones in the H...
Second thumbnail for: Constraining the evolution of shear zones in the H...
Third thumbnail for: Constraining the evolution of shear zones in the H...
Journal Article
Journal: GSA Bulletin
Published: 14 December 2022
GSA Bulletin (2023) 135 (7-8): 2121–2140.
... at high elevations (>4 km), close to the modern thrust front. Therefore, in the eastern Himalaya, we see an example of the paleo-MCT sheet that has not been eroded as far northward as it has in the western Himalaya. Figure 1. Geological map of Nepal (after DeCelles et al., 2020 ). Major rock...
FIGURES
First thumbnail for: Bhumichula plateau: A remnant high-elevation low-r...
Second thumbnail for: Bhumichula plateau: A remnant high-elevation low-r...
Third thumbnail for: Bhumichula plateau: A remnant high-elevation low-r...
Series: Geological Society, London, Special Publications
Published: 08 October 2019
DOI: 10.1144/SP483.3
EISBN: 9781786204523
... to be contemporaneous with the activity of the STDS ( Searle 2013 ), an undeformed kilometre-size granite (Bura Buri granite) has been found in western Nepal ( Fig. 2 ) with the apparently unique characteristic of cross-cutting the STDS, intruding both the GHS and the Tethyan Himalayan Sequence at c. 24 Ma ( Bertoldi...
Journal Article
Journal: Geology
Published: 06 April 2018
Geology (2018) 46 (6): 503–506.
...Zoe Braden; Laurent Godin; John Cottle; Chris Yakymchuk Abstract We report 8 Ma zircon rim ages from a kyanite-bearing leucocratic pod within the lower metamorphic core of the Himalayan orogen in western Nepal. Zircon cores yield ca. 1.84 Ga ages, interpreted to be inherited igneous cores...
FIGURES
First thumbnail for: Renewed late Miocene (&amp;lt;8 Ma) hinterland duc...
Second thumbnail for: Renewed late Miocene (&amp;lt;8 Ma) hinterland duc...
Third thumbnail for: Renewed late Miocene (&amp;lt;8 Ma) hinterland duc...
Journal Article
Journal: GSA Bulletin
Published: 14 December 2017
GSA Bulletin (2018) 130 (5-6): 1041–1056.
...-slip displacement along the South Tibetan detachment is constrained to 160–185 km in western Nepal based on the restoration of this folded structure. The lack of evidence for partial melting in the footwall of the South Tibetan detachment in the Jajarkot klippe implies that the melt-weakened middle...
FIGURES
First thumbnail for: Reappraisal of emplacement models for Himalayan ex...
Second thumbnail for: Reappraisal of emplacement models for Himalayan ex...
Third thumbnail for: Reappraisal of emplacement models for Himalayan ex...
Journal Article
Journal: Geology
Published: 01 June 2016
Geology (2016) 44 (6): 403–406.
...Renaud Soucy La Roche; Laurent Godin; John M. Cottle; Dawn A. Kellett Abstract A newly identified and dated segment of the South Tibetan detachment in the Karnali klippe, western Nepal Himalaya, constrains initiation of mid-crustal tectonically driven exhumation to the early Oligocene. The folded...
FIGURES
First thumbnail for: Direct shear fabric dating constrains early Oligoc...
Second thumbnail for: Direct shear fabric dating constrains early Oligoc...
Third thumbnail for: Direct shear fabric dating constrains early Oligoc...
Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 01 October 2015
Lithosphere (2015) 7 (5): 511–518.
... Himalayan thrust geometry or associated rock uplift patterns. Here, we synthesize multiple lines of evidence for a major discontinuity in the Main Himalayan thrust in western Nepal. Analysis of topography and seismicity indicates that west of ∼82.5°E, the single band of steep topography and seismicity along...
FIGURES
First thumbnail for: Along-strike changes in Himalayan thrust geometry:...
Second thumbnail for: Along-strike changes in Himalayan thrust geometry:...
Third thumbnail for: Along-strike changes in Himalayan thrust geometry:...
Journal Article
Published: 01 February 2011
Environmental & Engineering Geoscience (2011) 17 (1): 23–38.
... Analysis Nepal The village of Laprak, which is home to about 3,500 people, is located at 28°13′4.8″N, 84°48′12.7″E, at about 2,150 m elevation along the Raizo Khola valley in the Gorkha District of western Nepal ( Figure 1 ). There is no road access, and a two- to three-day trek, depending...
FIGURES
First thumbnail for: Engineering Geology and Stability of the Laprak La...
Second thumbnail for: Engineering Geology and Stability of the Laprak La...
Third thumbnail for: Engineering Geology and Stability of the Laprak La...
Journal Article
Published: 01 May 2010
Environmental & Engineering Geoscience (2010) 16 (2): 127–142.
... of the characteristics and locations of landslides are essential. Furthermore, a method of constructing maps of natural hazards is necessary that is simple, efficient, and, above all, accurate. This paper assesses two different methods to identify landslides in western Nepal and demonstrates the capabilities of each...
FIGURES
First thumbnail for: Mapping Landslide Hazards in <span class="search-h...
Second thumbnail for: Mapping Landslide Hazards in <span class="search-h...
Third thumbnail for: Mapping Landslide Hazards in <span class="search-h...
Journal Article
Journal: Geosphere
Published: 01 October 2008
Geosphere (2008) 4 (5): 785–801.
... for shortening in western Nepal obtained from balanced cross sections (485–743 km). Thus, the Himalayan thrust belt in western Nepal is essentially a forward-propagating thrust belt from hinterland to foreland, with minor out-of-sequence (<5 km) thrust and normal faults. The data and the forward modeling...
FIGURES
First thumbnail for: Forward modeling the kinematic sequence of the cen...
Second thumbnail for: Forward modeling the kinematic sequence of the cen...
Third thumbnail for: Forward modeling the kinematic sequence of the cen...
Journal Article
Journal: GSA Bulletin
Published: 01 July 2006
GSA Bulletin (2006) 118 (7-8): 865–885.
...Delores M. Robinson; Peter G. DeCelles; Peter Copeland Abstract We present a new geologic map of western Nepal and three balanced regional cross sections in the Himalayan thrust belt. The minimum shortening between the South Tibetan detachment and the Main Frontal thrust is 485–743 km and suggests...
FIGURES
First thumbnail for: Tectonic evolution of the Himalayan thrust belt in...
Second thumbnail for: Tectonic evolution of the Himalayan thrust belt in...
Third thumbnail for: Tectonic evolution of the Himalayan thrust belt in...
Journal Article
Published: 01 May 2006
European Journal of Mineralogy (2006) 18 (3): 289–297.
...Laurent BOLLINGER; Emilie JANOTS Abstract A multichronometric study involving 40 Ar/ 39 Ar and 208 Pb/ 232 Th ion-microprobe dating was performed on the two northernmost windows of Lesser Himalayan rocks in far western Nepal. Both regions were sampled for their monazite-rich series. Metamorphic...
FIGURES
First thumbnail for: Evidence for Mio-Pliocene retrograde monazite in t...
Second thumbnail for: Evidence for Mio-Pliocene retrograde monazite in t...
Third thumbnail for: Evidence for Mio-Pliocene retrograde monazite in t...
Series: AAPG Memoir
Published: 01 January 2004
DOI: 10.1306/M82813C6
EISBN: 9781629810485
... ABSTRACT The kinematics and rates of displacement along single faults of the Outer Belt and through the entire thrust belt of the Himalayas of western Nepal have been estimated by structural field work, balanced cross sections, fluviatile terrace-deposit studies, and geodesy. GPS geodetic...
Series: AAPG Memoir
Published: 01 January 2004
DOI: 10.1306/M82813C8
EISBN: 9781629810485
... independent elbow-shaped structure. The sediment’s burial history can be quantified from geometric and kinematic data. We emphasize that because of the cylindrical behavior of the prism, extrapolation of the sediment transfer to the entire western Nepal Siwalik is valid. Burial in the foreland basin takes two...
Journal Article
Journal: GSA Bulletin
Published: 01 March 2000
GSA Bulletin (2000) 112 (3): 424–434.
... on samples from the Siwalik Group in central and western Nepal demonstrate that laminated siltstones yield paleomagnetic data useful for tectonic and magnetostratigraphic studies. Sandstones and paleosols of the Siwalik Group, however, generally display highly erratic paleomagnetic behavior during thermal...
FIGURES
First thumbnail for: Magnetic polarity stratigraphy of the Neogene Siwa...
Second thumbnail for: Magnetic polarity stratigraphy of the Neogene Siwa...
Third thumbnail for: Magnetic polarity stratigraphy of the Neogene Siwa...
Journal Article
Journal: GSA Bulletin
Published: 01 January 1998
GSA Bulletin (1998) 110 (1): 2–21.
...P. G. DeCelles; G. E. Gehrels; J. Quade; T. P. Ojha; P. A. Kapp; B. N. Upreti Abstract Sedimentological and provenance data from the lower Miocene–Pliocene Dumri Formation and Siwalik Group in western Nepal provide new information about the timing of thrust faulting and the links between erosional...