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Kathmandu Complex

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Journal Article
Published: 01 September 1997
Journal of the Geological Society (1997) 154 (5): 863–869.
...M. R. W. JOHNSON; G. ROGERS Abstract The Kathmandu complex, comprising the Bhimphedi and Phulchauki groups which range in age from Precambrian to Lower Palaeozoic, is situated in the frontal part of the Main Central Thrust sheet. Although it is likely that a tectonothermal event antedated...
Journal Article
Journal: GSA Bulletin
Published: 01 January 2006
GSA Bulletin (2006) 118 (1-2): 185–198.
... the Himalaya : Terra Nova , v. 15 p. 46 – 51 doi: 10.1046/j.1365-3121.2003.00463.x. Johnson , M.R.W. , and Rogers , G. , 1997 , Rb-Sr ages of micas from the Kathmandu complex, central Nepalese Himalaya: Implications for the evolution of the Main Central thrust : Journal of the Geological...
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Journal Article
Published: 01 December 2017
Earthquake Spectra (2020) 33 (1_suppl): 35–53.
... through the colluvial slopes and terraces of the Late Pleistocene, and on the northwest part of the valley, the Kalphu Khola Fault, which runs through the Late Pleistocene gneissic boulder beds ( Nakata et al. 1998 ). The complex tectonic environment surrounding the Kathmandu basin is shown in Figure 2...
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Journal Article
Published: 01 August 2020
Earthquake Spectra (2020) 36 (3): 1549–1569.
... there is complex wave propagation as in basin contexts (e.g. Bindi et al., 2009 ), yet the geological structure beneath Kathmandu remains uncertain. The Kathmandu Valley is underlain by sediments derived from both lacustrine and fluvio-deltaic origins ( Sakai et al., 2002 ). The northern portion...
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Journal Article
Published: 05 March 2019
Bulletin of the Seismological Society of America (2019) 109 (2): 672–687.
...Meng Chen; Shengji Wei Abstract The relatively low damage in the Kathmandu Valley caused by the 2015 M w 7.8 Gorkha earthquake has attracted much attention. To gain a deeper understanding of this phenomenon, we conduct broadband ground‐motion simulations for both the mainshock and the M w 7.2...
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Journal Article
Published: 01 December 2017
Earthquake Spectra (2020) 33 (1_suppl): 55–72.
... at five sites in Kathmandu ( Molnar et al. 2017b ). Kathmandu Valley is underlain primarily by Precambrian high-grade metasediment basement rocks such as slates, schists, and marbles (Phulchauki Group) that are intensely folded and faulted, whereas intrusive gneissic rocks of the Shivapuri complex...
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Journal Article
Published: 01 February 1980
Journal of the Geological Society (1980) 137 (1): 1–34.
... by recumbent folding, block faulting, nappe structure and other explanations have been offered. The crystalline complex of Kathmandu in central Nepal, recently mapped in detail, consists primarily of a right way up sequence of regionally metamorphosed sediments displaying a metamorphic zonation roughly...
Journal Article
Published: 01 November 2015
Seismological Research Letters (2015) 86 (6): 1524–1532.
...‐98) in rare instances. Within the Kathmandu Valley, intensities were generally 6–7 EMS. This surprising (and fortunate) result can be explained by the nature of the mainshock ground motions, which were dominated by energy at periods significantly longer than the resonant periods of vernacular...
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Journal Article
Published: 01 November 2015
Seismological Research Letters (2015) 86 (6): 1540–1548.
... the mainshock and the aftershock could be explained by geometric effects (e.g., Kawase, 1996 ). Indeed, the Kathmandu basin has a complex geometric shape ( Sakai, 2001 ). These two events have two different azimuths; and, for the aftershock, HVSR s display differences between the two horizontal components...
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Journal Article
Published: 14 October 2015
Seismological Research Letters (2015) 86 (6): 1533–1539.
... 7.8 Gorkha, Nepal, earthquake sequence collected using existing and new Quake-Catcher Network (QCN) and U.S. Geological Survey NetQuakes sensors located in the Kathmandu Valley. A comparison of QCN data with waveforms recorded by a conventional strong-motion (NetQuakes) instrument validates the QCN...
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Journal Article
Published: 19 November 2019
Bulletin of the Seismological Society of America (2020) 110 (1): 26–37.
... distribution in the northern and southern clusters reflect the complex geometry of the Main Himalayan thrust. The aftershocks are located both on the slip surface and through the entire hanging wall. The 1D velocity structure obtained from this study is almost constant at a P ‐wave velocity ( V P ) of 6.0 km...
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Journal Article
Journal: Geosphere
Published: 01 June 2017
Geosphere (2017) 13 (3): 771–781.
... locations of the Main Central thrust, though it cannot be uniquely identified as such. This study provides the first steps toward empirical constraints on the location and geometry of thrust structures in the region, helping to clarify the complex local kinematic framework. These methods not only help...
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Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 01 August 2015
Lithosphere (2015) 7 (4): 441–464.
... metamorphic core in the Kanchenjunga area demonstrates that the Himalayan metamorphic core was dominated by underplating from at least the Oligocene through to present, and that the internal structure of the exhumed metamorphic core is significantly more complex than has been documented previously...
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Journal Article
Journal: Geosphere
Published: 01 October 2016
Geosphere (2016) 12 (5): 1575–1593.
... of the Himalaya : Journal of Asian Earth Sciences , v. 25 , p. 695 – 706 , doi:10.1016/j.jseaes.2004.04.010. Johnson , M. , Oliver , G. , Parrish , R.R. , and Johnson , S.P. , 2001 , Synthrusting metamorphism, cooling, and erosion of the Himalayan Kathmandu Complex, Nepal : Tectonics...
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Journal Article
Journal: GSA Bulletin
Published: 01 January 2003
GSA Bulletin (2003) 115 (1): 3–20.
... and discussed in the ensuing sections. The Tetang Formation displays complex stratigraphic patterns associated with remnant paleotopography, with no significant thickening toward the eastern or western basin-bounding faults ( Fig. 7 ). Along the eastern flank of the basin, where the contact relationships...
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Journal Article
Published: 01 December 2017
Earthquake Spectra (2020) 33 (1_suppl): 197–218.
..., structural damage was not significant in medium-to-high rise apartment buildings in the Kathmandu Valley. The Silver City Apartment Complex, one of the tallest buildings in Kathmandu, sits at one of the highest points of the city. Shown in Figure 7a , it comprises two buildings, one of which was still...
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Journal Article
Published: 06 May 2020
Seismological Research Letters (2020) 91 (4): 2399–2408.
... [NEIC], see Data and Resources ) originated 80 km northwest of Kathmandu within a cluster of background seismicity that is believed to correspond to the bottom of the locked portion of the MHT ( Avouac et al. , 2015 ). Several recent studies from geodetic, aftershock seismicity, and geologic mapping...
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Journal Article
Published: 17 February 2017
Quarterly Journal of Engineering Geology and Hydrogeology (2017) 50 (1): 69–80.
... later. In Nepal, for example, the first mountain road to be constructed was the Tribhuvan Highway built between 1953 and 1956, linking Hetauda on the Terai Plain with Kathmandu ( Fig. 1 ). Between 1959 and 1962 the first road into Bhutan was constructed between Phuentsholing on the Indian border...
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Journal Article
Published: 01 November 2015
Seismological Research Letters (2015) 86 (6): 1514–1523.
... the MFT , south of Kathmandu ( Bollinger et al. , 2014 ). Field observations after the 2015 rupture, which nucleated on MHT ( Avouac et al. , 2015 ), suggest the rupture only extended to the base of the MFT . These findings are consistent with the magnitude dependence of surface rupture for events...
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Journal Article
Published: 01 February 2013
Bulletin of the Seismological Society of America (2013) 103 (1): 180–195.
...  (8) , and the number of Fourier components was increased by a factor of 16 by padding trailing zeroes to interpolate time intervals by 1/16. The latter half of the Fourier components were then set to the complex conjugates of the first half to get real‐valued waveforms by using the FFT...
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