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northwestern Bhutan

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Journal Article
Journal: Lithosphere
Published: 16 April 2019
Lithosphere (2019) 11 (4): 465-487.
..., and offset magnitude of the South Tibetan detachment system (STDS) are available. Here, we integrate petrofabric, finite strain, and kinematic data with metamorphic and deformation temperatures to generate a structural model for the STDS in northwestern Bhutan. We divide the STDS into an ∼2-km-thick lower...
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Journal Article
Journal: GSA Bulletin
Published: 01 November 2016
GSA Bulletin (2016) 128 (11-12): 1679-1695.
... between Cambrian marine shelf deposits and coarse Ordovician conglomerate, as well as widespread granitic plutons. Although the lateral extent of this event is poorly known, two regions in the central and eastern Himalaya, the Kumaon of India and klippen of Bhutan, contain conglomerate units that may...
FIGURES
Journal Article
Published: 14 September 2010
Geological Magazine (2010) 148 (3): 351-379.
...NIGEL C. HUGHES; PAUL M. MYROW; N. RYAN MCKENZIE; D. A. T. HARPER; O. N. BHARGAVA; S. K. TANGRI; K. S. GHALLEY; C. M. FANNING Abstract The Pele La Group in the Wachi La section in the Black Mountains of central Bhutan represents the easternmost exposure of Cambrian strata known in the Himalaya...
Journal Article
Journal: Lithosphere
Published: 14 July 2017
Lithosphere (2017) 9 (5): 774-795.
... and Hollister, 1991 ; Grujic et al., 2002 , 2011 ; Warren et al., 2011 , 2012 ). In northwestern Bhutan, Warren et al. (2011) showed that GH rocks above the Laya thrust attained eclogite- and granulite-facies conditions prior to their exhumation, whereas those below were deformed at upper amphibolite...
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Journal Article
Journal: Geology
Published: 01 May 2006
Geology (2006) 34 (5): 341-344.
... of the eastern Himalaya (Bhutan) indicate clear isotopic differences directly comparable with the equivalent units from the central Himalaya. Zircons from metaquartzites of the High Himalayan Series that range in age from 980 to 1820 Ma and an orthogneiss intruded at 825 ± 9 Ma bracket deposition to between 816...
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Journal Article
Published: 01 February 2017
Italian Journal of Geosciences (2017) 136 (1): 5-14.
...Chiara Montomoli; Rodolfo Carosi; Daniela Rubatto; Dario Visonà; Salvatore Iaccarino Abstract In Western Bhutan Himalayas leucogranite dykes emplaced in sub-vertical hybrid fractures that cut across the high-grade rocks of the upper Greater Himalayan Sequence just below to the South Tibetan...
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Journal Article
Journal: GSA Bulletin
Published: 01 July 2011
GSA Bulletin (2011) 123 (7-8): 1406-1426.
...Sean Long; Nadine McQuarrie; Tobgay Tobgay; Catherine Rose; George Gehrels; Djordje Grujic Abstract New mapping in eastern Bhutan, in conjunction with U-Pb detrital zircon and δ 13 C data, defines Lesser Himalayan tectonostratigraphy. The DalingShumar Group, 2–6 km of quartzite (Shumar Formation...
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Journal Article
Journal: Lithosphere
Published: 01 August 2013
Lithosphere (2013) 5 (4): 438-449.
... with this physiographic transition in eastern Bhutan—the Lhuentse fault. Low-temperature (U-Th)/He apatite data suggest that the Lhuentse fault has been active since the Pliocene, and (U-Th)/He dates on offset hydrothermal hematite deposits from within the fault zone demonstrate a component of Quaternary slip. Although...
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Journal Article
Journal: GSA Bulletin
Published: 01 July 2011
GSA Bulletin (2011) 123 (7-8): 1427-1447.
...Sean Long; Nadine McQuarrie; Tobgay Tobgay; Djordje Grujic Abstract We present a new geologic map of eastern and central Bhutan and four balanced cross sections through the Himalayan fold-thrust belt. Major structural features, from south to north, include: (1) a single thrust sheet of Subhimalayan...
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Journal Article
Published: 01 March 2016
Journal of the Geological Society (2016) 173 (2): 352-369.
...Lucy V. Greenwood; Tom W. Argles; Randall R. Parrish; Nigel B. W. Harris; Clare Warren Abstract Lithotectonic mapping, metamorphic observations and U–Pb zircon ages underpin a substantial revision of central Bhutan geology, notably a more extensive and continuous outcrop of the Tethyan Sedimentary...
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Journal Article
Journal: Lithosphere
Published: 01 February 2013
Lithosphere (2013) 5 (1): 67-81.
..., has been mapped for over 2000 km coincident with the Himalayan range crest. In most areas, the immediate hanging wall of the South Tibetan fault system sole detachment consists of predominantly carbonate rocks of Lower Paleozoic age. However, in the Bhutan sector of the eastern Himalaya (∼89°E–92°E...
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Journal Article
Published: 16 November 2018
Journal of the Geological Society (2018) 176 (2): 284-305.
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Journal Article
Journal: Geology
Published: 01 January 2003
Geology (2003) 31 (1): 75-78.
...Chris Duncan; Jeff Masek; Eric Fielding Abstract Differences in the topography of central Nepal and Bhutan are characterized by map and profile patterns of elevation, slope, relief, and stream gradients. Nepal exhibits a narrow hinterland zone of extreme relief, steep slopes and channels, and deep...
FIGURES
Journal Article
Journal: Geology
Published: 01 December 2003
Geology (2003) 31 (12): 1109-1112.
... Himalayan, High Himalayan and Tethyan Series) have been recognized over 2500 km along strike from Bhutan to Kashmir. However, their extension westward to the Nanga Parbat syntaxis remains equivocal. We have supplemented detailed field work in the area with isotopic analysis aimed at revealing distinct...
FIGURES
Journal Article
Published: 01 July 2002
Journal of Paleontology (2002) 76 (4): 709-717.
... collage at Yinchangou, northwestern Yunnan, are here assigned to Kunmingaspis yunnanensis Chang, 1964 , and the concept of the genus Kunmingaspis is reconsidered. Although there is debate about to the paleogeographic affinities of the Yunling collage, the apparent presence of this species supports...
FIGURES
Journal Article
Journal: Lithosphere
Published: 01 October 2011
Lithosphere (2011) 3 (5): 346-366.
... of this structure. In northwestern Bhutan, the Kakhtang thrust, which was active between ca. 14 and ca. 10 Ma ( Grujic et al., 2002 ), is probably continuous with the Laya thrust ( Fig. 2 ), which constitutes a sharp contact between the granulite-bearing unit above and the amphibolite-bearing unit below ( Davidson...
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Journal Article
Journal: Lithosphere
Published: 01 October 2009
Lithosphere (2009) 1 (5): 259-281.
... system. The more internal, northern segment is referred to here as the inner South Tibetan detachment and the more external, southern segment is referred to as the outer South Tibetan detachment. In northwestern Bhutan, the inner South Tibetan detachment occurs as two closely spaced normal-sense faults...
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Journal Article
Published: 01 June 2003
Bulletin of the Seismological Society of America (2003) 93 (3): 1395-1400.
...) above the plane of detachment as proposed in the models, the seismic activity continues from surface to the lower crust (0–45 km) to the north of MBT, and earthquakes are produced by a thrust mechanism. The earthquakes to the east of Sikkim, in the Bhutan Himalaya, on the other hand, are produced along...
FIGURES
Journal Article
Journal: Geology
Published: 01 November 2012
Geology (2012) 40 (11): 971-974.
... the petrologic arguments for large displacements, at least in the eastern Himalaya. Near the western boundary of Bhutan, the trace of the STFS is apparently offset ∼70 km across a NNE-SSW–trending graben, the Yadong cross structure. This offset has been attributed by previous authors to left-lateral slip along...
FIGURES
Journal Article
Journal: GSA Bulletin
Published: 01 September 2010
GSA Bulletin (2010) 122 (9-10): 1660-1670.
... to Bhutan (∼2000 km). By sampling rocks from one time interval for nearly the entire length of an orogen, and by covering a range of lithotectonic units, we minimize time as a significant source of variance in detrital age spectra, and thus obtain direct assessment of the spatial variability in sediment...
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