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South Tibetan Detachment

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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
Published: 01 June 2018
Italian Journal of Geosciences (2018) 137 (2): 175-187.
...Chiara Montemagni; Salvatore Iaccarino; Chiara Montomonli; Rodolfo Carosi; Arvind K. Jain; Igor M. Villa ABSTRACT In the Garhwal Himalaya, the Malari granite, a small pluton, intrudes the upper portion of the Greater Himalayan Sequence (GHS) and is deformed in the South Tibetan Detachment System...
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Journal Article
Published: 01 February 2017
Italian Journal of Geosciences (2017) 136 (1): 5-14.
... Detachment. The granitic dykes dip to the north often showing a mylonitic deformation with a top-down to-the-N sense of shear. The high-angle fractures are interpreted to be related to the evolution of the South Tibetan Detachment toward a brittle regime of deformation. U-Pb monazite ages constrain...
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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...
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Journal Article
Journal: Lithosphere
Published: 01 October 2009
Lithosphere (2009) 1 (5): 259-281.
...Dawn A. Kellett; Djordje Grujic; Saskia Erdmann Abstract In the eastern Himalaya (Bhutan), there are two distinct top-down-to-the-north segments of the South Tibetan detachment system. The outer segment is a diffuse ductile shear zone preserved as klippen in broad open synforms. New age constraints...
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Series: Geological Society, London, Special Publications
Published: 01 January 2006
DOI: 10.1144/GSL.SP.2006.268.01.16
EISBN: 9781862395169
... and an anonymous reviewer. In the Nyalam area of southern Tibet and adjoining Nepal, from south to north, three main geological units can be recognized: the Main Central Thrust (MCT) system, the Greater Himalaya zone, and the South Tibetan Detachment System (STDS) ( Fig. 1 ). The MCT is a north-dipping, low...
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Series: GSA Special Papers
Published: 01 January 1992
DOI: 10.1130/SPE269
... Six transects mapped across the boundary between the Tibetan sedimentary sequence and the underlying Greater Himalayan metamorphic sequence in southern Tibet demonstrate that a series of gently north-dipping normal faults, the South Tibetan detachment system, separates these two rocks sequences...
Journal Article
Journal: GSA Bulletin
Published: 14 December 2017
GSA Bulletin (2017) 130 (5-6): 1041-1056.
...Renaud Soucy La Roche; Laurent Godin; James L. Crowley Abstract Recent mapping in the Jajarkot klippe highlights the presence of the South Tibetan detachment in an external crystalline nappe south of the main Himalayan range and provides structural constraints on the emplacement mechanism...
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Journal Article
Published: 01 May 2001
Geological Magazine (2001) 138 (3): 253-276.
... thick sequence of amphibolite to granulite facies gneiss, bounded by the Main Central Thrust at the base, and by the extensional faults of the South Tibetan Detachment System at the top. Geochronological and structural data demonstrate that coeval movements along both the Main Central Thrust and South...
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Image
Schematic diagrams of the evolution of the <b>South</b> <b>Tibetan</b> <b>detachment</b> system ...
Published: 16 April 2019
Figure 12. Schematic diagrams of the evolution of the South Tibetan detachment system (STDS) in northwestern Bhutan. TH—Tethyan Himalayan rocks; CF—Chekha Formation; GH—Greater Himalayan rocks. Yellow stars indicate rocks that will eventually be juxtaposed by motion on the STDS. (A) 26–22 Ma
Image
Top-SW shortening in the <b>South</b> <b>Tibetan</b> <b>detachment</b> system (STDS) and Tethyan...
in > Geosphere
Published: 01 June 2016
Figure 8. Top-SW shortening in the South Tibetan detachment system (STDS) and Tethyan Himalayan Sequence (THS), Kali Gandaki transect. See Plate 1 for locations of photographs. (A–C) F4 folding and associated top-S/SW shearing deform S3 foliation in the STDS. F4 hinge planes (dashed lines
Image
Microstructural shear-sense indicators in the <b>South</b> <b>Tibetan</b> <b>detachment</b> syst...
in > Geosphere
Published: 01 June 2016
Figure 9. Microstructural shear-sense indicators in the South Tibetan detachment system (STDS)–Kali Gandaki. See Plate 1 and Figure 4 for relative structural positions of samples. (A) Sample P13/026—Grain-shape–preferred orientation (SPO) long-axis alignment of calcite and dolomite records
Image
Sketch illustrating hydrothermal system of active <b>South</b> <b>Tibetan</b> <b>detachment</b> ...
in > Geology
Published: 01 July 2013
Figure 4. Sketch illustrating hydrothermal system of active South Tibetan detachment (STD) during late Early Miocene. Precipitation sourced at high elevation penetrates down to brittle-ductile transition through synextensional brittle normal faults within Tethyan Himalayan Sequence
Image
(A) Restoration of the <b>South</b> <b>Tibetan</b> <b>Detachment</b> at ca. 35 Ma in the Dhaulag...
in > Geosphere
Published: 01 August 2010
Figure 15. (A) Restoration of the South Tibetan Detachment at ca. 35 Ma in the Dhaulagiri–Annapurna Himalaya. Three rock samples have been restored to their depths of origin. The green box illustrates the depth of peak kyanite-grade metamorphism of GHS unit 3 gneisses, the yellow box illustrates
Image
Cross sections across the outer and inner <b>South</b> <b>Tibetan</b> <b>detachment</b>. See  Fi...
Published: 01 October 2009
Figure 3. Cross sections across the outer and inner South Tibetan detachment. See Figure 2 for location of section lines. (A) A-A′ and A″-A″″ sections across the outer South Tibetan detachment in the Lingshi area. (B) B-B′ section across the outer South Tibetan detachment in the Ura area. (C) C
Series: Geological Society, London, Special Publications
Published: 01 January 2015
DOI: 10.1144/SP412.11
EISBN: 9781862397040
... bold grey lines are the proposed T–t paths. FC denotes fast cooling. ( a ) South Tibetan Detachment (STD) shear zone (upper part of unit 4) (modified from Liu et al. 2012 ); ( b ) unit 2. The gas released by the samples showed significant amounts of atmospheric argon, leading to amounts...
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Series: GSA Special Papers
Published: 01 January 2004
DOI: 10.1130/0-8137-2383-3(2004)383[73:OBVRSC]2.0.CO;2
... structures. In the north of the transect significant clockwise rotations of 47° ± 8° with respect to the Indian plate are observed in the Tethyan metasediments north of the South Tibetan detachment system. This result coincides with earlier data from the Tethyan sedimentary series in the central Himalaya...
Journal Article
Journal: GSA Bulletin
Published: 01 November 2010
GSA Bulletin (2010) 122 (11-12): 1865-1876.
...Himanshu K. Sachan; Matthew J. Kohn; Anubhooti Saxena; Stacey L. Corrie Abstract In the Garhwal region, India, the Malari leucogranite cuts the South Tibetan detachment system, a large-scale normal fault system at the top of the High Himalaya. The leucogranite crosscuts ductile normal-sense shear...
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Image
Photographs of key structural relationships within the <b>South</b> <b>Tibetan</b> <b>detach</b>...
Published: 01 March 2013
Figure 7. Photographs of key structural relationships within the South Tibetan detachment shear zone and the Tethyan Himalayan Sequence. (A) Top-to-the-north S-C fabric in mylonitic augen gneiss, South Tibetan detachment shear zone. Location noted in Figure 6 ; pencil for scale; view looking