2020
DOI: 10.1007/s12594-020-1582-1
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Thrust Shear Sense and Shear Zone Fabrics in the Higher Himalaya, Siyom Valley, Eastern Arunachal Himalaya, India

Abstract: The Higher Himalayan Crystallines (HHC) in the Siyom river section of eastern Arunachal Himalaya, display top-to- ESE compressional ductile shear from Pene to Menchuka. In this part of the Himalayan Metamorphic Belt (HMB), the base of the Main Central Thrust (MCT) is the southern boundary of the ductile shear fabrics in HHC. Across the MCT, a significant break in the grade of metamorphism is observed between the HHC and the Lesser Himalayan Sequences (LHS). The ductile shear fabrics documented in the HHC are p… Show more

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Cited by 6 publications
(6 citation statements)
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“…After the development of MBT‐2, ~E‐W extension represents active Himalayan deformation of arc‐parallel extension north of MFT. If the arc‐parallel extension is coupled with the model of oblique convergence and clockwise rotation of the Indian plate, a stress regime can be interpreted for the formation of Kopili and Bomdila faults in the region in phases (Figure 12; Goswami, Baruah, et al, 2020; Goswami, Mahanta, et al, 2020). Published age 40 Ar/ 39 Ar dating of micas and (U–Th)/He dating of apatite from the Ama Drime Massif in southern Tibet suggests inception of arc‐parallel extension in Himalaya at 13–12 Ma and this age coincides with the cessation of activity along with MCT and south Tibet Detachment (STD) locally (Jessup et al, 2008; Kali et al, 2010).…”
Section: Discussionmentioning
confidence: 99%
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“…After the development of MBT‐2, ~E‐W extension represents active Himalayan deformation of arc‐parallel extension north of MFT. If the arc‐parallel extension is coupled with the model of oblique convergence and clockwise rotation of the Indian plate, a stress regime can be interpreted for the formation of Kopili and Bomdila faults in the region in phases (Figure 12; Goswami, Baruah, et al, 2020; Goswami, Mahanta, et al, 2020). Published age 40 Ar/ 39 Ar dating of micas and (U–Th)/He dating of apatite from the Ama Drime Massif in southern Tibet suggests inception of arc‐parallel extension in Himalaya at 13–12 Ma and this age coincides with the cessation of activity along with MCT and south Tibet Detachment (STD) locally (Jessup et al, 2008; Kali et al, 2010).…”
Section: Discussionmentioning
confidence: 99%
“…This may be due to continued thrusting and thrust loading made σ 2 subvertical (Fossen, 2016). Bomdila faults in the region in phases (Figure 12; Goswami, Baruah, et al, 2020;. Published age 40 Ar/ 39 Ar dating of micas and (U-Th)/He dating of apatite from the Ama Drime Massif in southern Tibet suggests inception of arcparallel extension in Himalaya at 13-12 Ma and this age coincides with the cessation of activity along with MCT and south Tibet Detachment (STD) locally (Jessup et al, 2008;Kali et al, 2010).…”
Section: Phase 3: E-w Extension In the Lower Siwalik Dafla And Middle...mentioning
confidence: 95%
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“…The Bhareli Formation consists of alternating sequence of carbonaceous shale, coal, silt stone, and sandstone in the lower part which indicates a continental facies (Figure 14). These sediments occur as thrust slices/caught up materials in folds—between the Lesser Himalayan Bomdila Group of rocks in the north and Sub–Himalayan Siwalik Group in the south (Goswami et al, 2013; Goswami, Baruah, Mahanta, Kalita, & Borah, 2020). Parts of the Permian Gondwana rocks might stay concealed beneath the orogenic belts along the periphery of the upper Assam shelf (Nayak et al, 2004; Verma & Mukhopadhyay, 1977).…”
Section: Hydrocarbon Potential Of Gondwana Sedimentsmentioning
confidence: 99%
“…(b): (19) Laskar (1956), (20) Singh (1973), (21) Singh and Mathur (1982), (22) Diener (1905), (23) Tripathi and Roy Chowdhury (1983), (24) Laul, Mishra, and Shrivastava (1988), (25) Dutta, Gill, and Srinivasan (1983), (26) Acharyya et al (1975), (27) Laskar (1954). (c) (28) Nayak et al (2009), (29) Prakash et al (1988), (30) Singh (2013), (31) Mahanta et al (2017), (32) Mahanta et al (2019), (33) Mahanta et al (2020), (34) Mahanta et al (2021), (35) Goswami et al (2013) (36) Goswami, Baruah, et al (2020), (37) GSI (2010), (38) Srivastava and Bhattacharya (1996), (39) Roy Chowdhury (1978), (d) (40) Jayprakash and Patel (1991), (41) Singh (1975), (42) Singh (1979), (43) Singh and Singh (1983), (44) Prasad, Dey, Gogoi, and Maithani (1989), (45) Sinha, Satsangi, and Mishra (1986), (46) Jayprakash et al (1990), (47) Laskar (1954), (48) Laul, Khan, and Sinha (1986), (49) Roychowdhury and Sinha (1983), (50) Sinha and Mathur (1977)…”
Section: Hydrocarbon Potential Of Gondwana Sedimentsmentioning
confidence: 99%