 | | Journal (article/letter/editorial) | | Lesser Himalayan rocks exposed in the Modi Khola valley, central Nepal Aaron J. Martin Æ Jibamitra Ganguly...detailed structural mapping in the Modi Khola valley of central Nepal reveal that large displacement thrust-sense...assemblages in the samples collected from the Modi Khola valley record only one episode of metamorphism to... IYSZ Garhwal STDS INDIA M RT RT Delhi Annapurna Kathmandu 500 km CT 84° DT MBT BHUTAN Br...utra ve r MFT MC m NEPAL Indus River Fig. 1 Generalized geologic map of Nepal modified from Amatya |  | | Journal (article/letter/editorial) | | Himalayan metamorphic core between the Annapurna and Dhaulagiri, central Nepal J . - C . VA NN AY 1 A N D K ....metamorphic core of the Himalaya in the Kali Gandaki valley of central Nepal corresponds to a 5-km-thick sequence...overlying low-grade Tethyan Zone (TZ) by the Annapurna Detachment. Structural, petrographic, geothermobarometric...first (Eohimalayan) episode included prograde, kyanite-grade metamorphism, during which the GHS was buried...(Neohimalayan) event corresponded to a retrograde phase of kyanite-grade recrystallization, related to thrust emplacement |  | | Book | | subdivision of the Himalayan belt is valid for India and Nepal sectors. The Pakistan sector has difficulties in...Capital Publishing Company, New Delhi.) central Nepal (Fig. 1.2). The HHC sequence overlying MCT2 is named...grade metamorphism in the HHC zone of the Himachal Pradesh covering areas like Kullu, Manali, Rohtang, and...Lithotectonic Subdivisions of the Himalaya In the Darma Valley of Kumaon Himalaya, Thakur (1977) described a divergent...staurolite, which is followed up northwards by kyanite, sillimanite, and sillimanite-bearing migmatite |  | | Report (chapter) | | such as the Kalopani and the Modi –Khola shear zones in central Nepal (Hodges et al. 1996; Vannay &...2003; Grujic et al. 2012), the Tamor –Khola Thrust in far-eastern Nepal (Schelling & Arita 1991) and the Trisuli...Trisuli –Likhu Fault in the Kathumandu Nappe, central Nepal (Arita et al. 1997). According to Mukherjee et al...earlier exhumation of the GHSu at least in western Nepal (Carosi et al. 2010; Montomoli et al. 2013). The...values of 2–3 km in western Nepal (Carosi et al. 2002, 2007), 30 km in eastern Nepal and Bhutan (Daniel et |  | | Report (chapter) | | the tectonic evolution of the High Himalaya in Nepal: the art of the possible David John Waters DOI:...the tectonic evolution of the High Himalaya in Nepal: the art of the possible 2 Department of Earth...Abbreviated title: High Himalayan metamorphism, Nepal A N Abstract A CC EP T ED M This review...Himalayan Sequence (GHS) and adjacent units in Nepal, in the light of recent research. The importance...Sequence (GHS) and its upper and lower boundaries, in Nepal and adjacent parts of South Tibet (Fig. 1). Downloaded |  | Zhang, Lin‐Kui, Li, Guang‐Ming, Cao, Hua‐Wen, Zhang, Zhi, Dong, Sui‐Liang, Liang, Wei, Fu, Jian‐Gang, Huang, Yong, Xia, Xiang‐Biao, Dai, Zuo‐Wen, Pei, Qiu‐Ming, Zhang, Shou‐Ting (2020) Activity of the south Tibetan detachment system: Constraints from leucogranite ages in the eastern Himalayas. Geological Journal, 55 (7). 5540-5573 doi:10.1002/gj.3756 | Journal (article/letter/editorial) | | the high- fold belt. grade metamorphosed GHC (kyanite and sillimanite phase metamor- Early Cretaceous...Harrison, & Lin, 2008) in the THS of Shannan municipality, China. The mica Ar–Ar ages in Gyaca County...K–Ar ages of illite in Dhaulagiri and Hidden Valley in Nepal are 30–25 Ma (Crouzet et al., 2007). The Ar–Ar...Ma (Ding et al., 2016; Ding et al., 2016; Gao, kyanite-facies Barrovian metamorphism (M1) early in the...two stages of activity along the sillimanite–kyanite-bearing gneiss in the Mabjia and Kangmar the STTS |  | | Journal (article/letter/editorial) | | of the Greater Himalayan Sequence, Annapurna Himalaya, central Nepal: Insights from titanite petrochronology...Short title: Titanite reveals long-lived thrust in Nepal ABSTRACT The Greater Himalayan Sequence (GHS) has...this study, we examine this concept in central Nepal by integrating temperature-time (T-t) paths, based...previously-identified intra-GHS thrusts in central Nepal, and thrusting duration was 3-6 Ma longer than proposed...than rates for other intra-GHS thrust sheets in Nepal. The overlap in high temperature titanite U-Pb ages |  | | Journal (article/letter/editorial) | | heat flow near the Main Central Thrust, central Nepal Himalaya L.A. Derry a,⁎, M.J. Evans b, R. Darling...springs thermochronometry a b s t r a c t In central Nepal hot springs are common in a broad zone where deeply...occur in all of the major river valleys of central Nepal, but their contribution to the thermal budget of...graben that contains the upper reaches of the Kali Gandaki river at altitudes of 3500–4000 m. The second common...large, deeply incised valleys in this section of Nepal have significant geothermal activity. Many of the |  | | Book | | Geology Reviews Megh Raj Dhital Geology of the Nepal Himalaya Regional Perspective of the Classic Collided...from Tatopani Megh Raj Dhital Geology of the Nepal Himalaya Regional Perspective of the Classic Collided...Geology Tribhuvan University Kirtipur, Kathmandu Nepal ISBN 978-3-319-02495-0 ISBN 978-3-319-02496-7 DOI...geological setup as Nepal. Forming a bridge between the Western and Eastern Himalaya, Nepal occupies a pivotal...time span from the Proterozoic to Holocene, the Nepal Himalaya preserves unique geological events. Varied |  | | Journal (article/letter/editorial) | | and decreased southwards to 633–667 °C in the kyanite and sillimanite-muscovite zones, and northwards...peak temperature reached a maximum value in the kyanite zone of 9.0–12.6 kbar and decreased northwards...within the GHC in the Langtang (Kohn, 2008) and Annapurna regions (Corrie & Kohn, 2011). However, few detailed... 2012) is recognized within the GHC in eastern Nepal (Fig. 1), it is still unclear whether thrusts commonly...garnet and staurolite zones within the LHS, to kyanite, sillimanite and cordierite zones within the GHC |  | Girault, Frédéric, Perrier, Frédéric, Gajurel, Ananta Prasad, Bhattarai, Mukunda, Koirala, Bharat Prasad, Bollinger, Laurent, Fort, Monique, France-Lanord, Christian (2012) Effective radium concentration across the Main Central Thrust in the Nepal Himalayas. Geochimica et Cosmochimica Acta, 98. 203-227 doi:10.1016/j.gca.2012.09.001 | Journal (article/letter/editorial) | | concentration across the Main Central Thrust in the Nepal Himalayas Frédéric Girault a,⇑, Frédéric Perrier...Campus, Tribhuvan University, Ghantaghar, Kathmandu, Nepal c National Seismological Centre, Department of Mines...Mines and Geology, Lainchaur, Kathmandu, Nepal d Département Analyse Surveillance Environnement, CEA...of 622 rock samples from 6 different sites in the Nepal Himalayas was measured in the laboratory using radon...sites, located from Lower Dolpo in Western Nepal to Eastern Nepal, are divided into 9 transects which cut |  | | Journal (article/letter/editorial) | | granite and Tibetan Slab migmatites in central Nepal P. Barbey a, M. Brouand b, P. Le Fort ‘, A. P&her...1995; accepted 1 February 1996 Abstract In central Nepal, the Tibetan Slab is made up of biotite-gneisses...Lithos 38 (1996163-79 in the Himalaya (Central Nepal), that has been assumed to derive from the underlying...granite Fig. 1. (a) Schematic map of the Himalaya Nepal after Colchen et al. (1986). redrawn Lesser Himalaya...Crystalline (HHC, also called Tibetan Slab in central Nepal) onto the Lesser Himalaya low-grade formations (Fig |  | | Journal (article/letter/editorial) | | core in the Accepted Article Likhu Khola region, East Central Nepal S. SHRESTHA1, K. P. LARSON1, C. GUILMETTE2...ubc.ca Short Title P-T-t evolution of the Likhu Khola region This article has been accepted for publication...dating of the metapelites from Likhu Khola region in east-central Nepal, combined with previously published...wellexposed portion of the HMC in the Likhu Khola region of east central Nepal (Figure 1b; From et al., 2014), combining...HMC. 2. LIKHU KHOLA REGION Reconnaissance scale mapping that included the Likhu Khola region was carried |  | | Report (chapter) | | implications for upper crustal shortening in central Nepal S. KHANAL1*, D. M. ROBINSON1, S. MANDAL1 & P. SIMKHADA2...Department of Mines and Geology, Lainchaur, Kathmandu, Nepal *Corresponding author (e-mail: skhanal@crimson.ua...structural architecture of Himalaya in central Nepal. The Main Central thrust (MCT) is at the base of...confirms its orogenic-scale presence in central Nepal. Supplementary material: U– Pb geochronological...Evidence for the presence of the RMT in central Nepal is presented by Kohn et al. (2004) in the footwall |  | | Journal (article/letter/editorial) | | garnets from a semipelitic schist from central Nepal reveal parallel, spiraling bands of high and low...Formation, exposed in the Modi Khola valley of the western Annapurna Range, central Nepal (outcrop location 28363958N...The sample location is on the west side of the valley at nearly the same structural position as the location...the hanging wall of the Ramgarh thrust. In the Annapurna Range, the exposed part of the Lesser Himalayan...heterogeneity in a semi-pelitic schist from central Nepal not only at the centimeter to quartermillimeter |  | He, Dian, Webb, A. Alexander G., Larson, Kyle P., Martin, Aaron J., Schmitt, Axel K. (2015) Extrusion vs. duplexing models of Himalayan mountain building 3: duplexing dominates from the Oligocene to Present. International Geology Review, 57 (1) 1-27 doi:10.1080/00206814.2014.986669 | Journal (article/letter/editorial) | | modification to the structural framework of the central Nepal Himalaya would alter our understanding of the extrusion...appears to be compelling evidence in the central Nepal Himalaya, but it has as yet been documented at only...results obtained in the Dadeldhura klippe of western Nepal are presented in a companion paper (He et al. 2014)...2010). The Kathmandu Nappe is located in central Nepal with Kathmandu city near its centre (Figure 3)....81° HHT Mt. Everest Shishapangma Dhaulagiri Annapurna A’ N 28° Cambrian-Ordovician granite B’ 3°E |  | | Journal (article/letter/editorial) | | to 85°E indicates that, the western and central Nepal Himalaya have been thickened by 0.5 and 1–1.5 times...low-relief surface in the Mugu-Dolpa region of west Nepal. We propose that these results can be explained...convergence direction, such as Kumaun and western Nepal Himalaya (McCaffrey, 1992; Platt, 1993). Early efforts...metamorphic core complexes in the Kumaun and western Nepal Himalaya, respectively (Fig. 1). Both exhume mid-crustal...differences in structure suggest that the Kumaun and Nepal Himalaya is an ideal place to study the 3-D strain |  | Rapa, Giulia, Groppo, Chiara, Rolfo, Franco, Petrelli, Maurizio, Mosca, Pietro, Perugini, Diego (2017) Titanite-bearing calc-silicate rocks constrain timing, duration and magnitude of metamorphic CO 2 degassing in the Himalayan belt. Lithos, 292. 364-378 doi:10.1016/j.lithos.2017.09.024 | Journal (article/letter/editorial) | | (L-GHS), in the GosainkundHelambu region of central Nepal (N28°00'37.3'', E85°29'50.9''; 3365 m a.s.l.; Fig...K-feldspar, muscovite, paragonite, margarite, kyanite, quartz, CE titanite, rutile, ilmenite and zoisite...aClc=0.7; aTr=0.7; aDi=0.7; aZo=0.75); calcite, kyanite, microcline, muscovite, quartz, titanite, rutile...titanite from U-GHS calc-silicate rocks from the Annapurna region (some tens of km westward of our AC studied...(2017) basing on their own field data from eastern Nepal Himalaya. Here we refine those preliminary estimates |  | | Report (issue) | | Fluctuations in the Inner Himalaya (North of the Annapurna and Dhaulagiri Himalaya), by Hermann Achenbach...Fluvial Response in the Tectonically Active Yamuna Valley, North-Western Himalaya: Timescales and Source-to-Sink...Uplift and Exhumation along the Arun River (Eastern Nepal): Implications for the Mechanism of Uplift of the...of Asbestos Mining and Milling in Behram Dehri, District Charssada, Northern Pakistan, by Noor Jehan and...Greater Himalayan Crystalline Sequence, Sutlej Valley and Shimla Klippe, NW India, by Richard D. Law |  | Chakraborty, S., Anczkiewicz, R., Gaidies, F., Rubatto, D., Sorcar, N., Faak, K., Mukhopadhyay, D.K., Dasgupta, S. (2016) A review of thermal history and timescales of tectonometamorphic processes in Sikkim Himalaya (NE India) and implications for rates of metamorphic processes. Journal of Metamorphic Geology, 34 (8) 785-803 doi:10.1111/jmg.12200 | Journal (article/letter/editorial) | | These are separated by a thrust whose equivalent in Nepal has been called the Ramgarh Thrust from the metasedimentary...pelitic lithologies diminish in abundance beyond the kyanite-zone and a region of calcareous and quartzitic...to the Namche migmatite Orthogneiss in adjacent Nepal (see descriptions in Lombardo et al., 1993; Goscombe...samples, mostly at the northern end of this unit, kyanite has also been found – see Sorcar et al., 2014)...Chu) which lies entirely within the staurolite–kyanite-zone of the Barrovian sequence, indicating that |  | | Journal (article/letter/editorial) | | 2009), starting from paragonite melting in the kyanite-zone (mineral abbreviations according to Kretz...and/or as prismatic crystals (Fig. 2a, e, f). Kyanite is present as relict in the northernmost samples...contain abundant prismatic sillimanite (Fig. 2e). Kyanite is interpreted as a relict formed during the prograde...composition of zircon in migmatites of the HHC in eastern Nepal (Tamor-Ghunsa section), *50 km west of Sikkim (Imayama...HHC has been recently reported in nearby eastern Nepal (Imayama et al. 2012). In that area however, the |  | | Journal (article/letter/editorial) | | filled and open symbols indicate presence of only kyanite and only sillimanite, respectively, whereas the...metamorphic sequence of the Himalayan rocks in Nepal, Martin et al. (2009) used Eq. (1) to select appropriate...probabilities are: P 1 = 0.222, P 2 = 0.194, P 3 = 0.167, P4 = 0.139, P5 = 0.111, P6 = 0.083, P7 = 0.056, P8 =...Lesser Himalayan rocks exposed in the Modi Khola valley, central Nepal. Contributions to Mineralogy 159,...history of the Ryoko metamorphic belt in the Yanai district, south-west Japan: constraints from Rb–Sr and |  | | Journal (article/letter/editorial) | | in the eastern Himalaya is sandwiched between Nepal on the west and Bhutan in the east. A classical...a combination of garnet, biotite, sillimanite (kyanite in four samples), plagioclase, quartz, and K-feldspar...belonging to the TG group—TG6, TG8, TG9, and TG10), kyanite occurs in addition, typically associated with plagioclase...mesosome in one instance. The relationship between kyanite and sillimanite is not clear because these occur...inferred P–T path (see below) passes through the kyanite field, it is not clear whether the kyanites are |  | | Report (chapter) | | Monazite ages in two traverses through the GHS at Modi and Langtang show a similar sequence: early prograde...last at the bottom, and also at different times in Modi and Langtang. There is no evidence in the Downloaded...amounts of aluminosilicate polymorphs (sillimanite, kyanite or andalusite) A occasionally occur in leucogranites...large intrusive complex: the Manaslu leucogranite, Nepal Himalaya. Journal of Petrology, 47, 71–95, ED ... & Avouac, J.P. 2006. Mountain building in the Nepal Himalaya: thermal and kinematic model. Earth and |  | | Journal (article/letter/editorial) | | near the Main Central Thrust in the Modi Khola Valley of central Nepal (courtesy of M.J. Rubenach). The...roadside outcrop 4 km east of Hini, in the H u m Valley (Powell & Vernon, 1979). Garnet porphyroblasts...detailed microstructural analysis of the rocks from Nepal, Pakistan and Vermont shows that correlated foliations...constant in orientation in a single rock sample (Nepal and Pakistan) and across macroscopic folds (Vermont;...porphyroblasts with the same orientation (see Appendix) from Nepal (Figs 2 & 3), Pakistan (Figs 4 & 5 ) and Vermont |
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