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![Litho-structural map of the study area (prepared by the authors). Orientations of different planar and linear structures are shown through lower hemisphere projections (a–h). Two migmatised zones at Tato and Rego are also shown. Colours and symbols indicating lithology are described in the legend. The MCT at Pene and the Bille-Kaying Fault are marked. (a) F1 hinge line in LHS. (b) F2 hinge line in LHS. (c) Pole plots of S1 in LHS. (d) Pole plots of S2 in LHS. (e) Pole plots of S1 in HHC. (f) Pole plots of S2 in HHC. (g) F1 hinge line in HHC. (h) F2 hinge line in HHC. (i) F3 hinge line in HHC (Locations where faults are marked: Pene: 28°31'34.1" N; 94°33'36.5" E; Kaying: 28°25'20"N: 94°4'66.9" E; Bille: 28°32'36.6" N: 94°38'32" E).]()
![The field relationship along HHC in Siyom Valley showing the folded metamorphic isograd model (drawn from Searly et al, 2008 and references therein).The shaded area shows the zones of partial melting (containing sillimanite + K- feldspar) at Tato and Rego. The isograds have been sheared by ESE directed simple shear. The isograds are flattened to the MCT ductile shear zone as shown in the figure. Below the ductile zone, the MCT brittle fault has a thrusted contact with the LHS at Pene. In the upper part, the right way –up isograd below STD is shown. b. The structural interpretation of the HHC along Siyom valley from Pene to Menchuka in ESE –WNW cross section (looking north). The diagram is not in scale.1. Top-to-ESE upward ductile compressional shear, 2. Boudins, 3. Top-to ESE brittle-ductile compressional shear; MCT: Main Central Thrust; HHC: Higher Himalayan Crystallines; STDS: South Tibetan Detachment System; TH: Tethyan Himalaya; BD: Basal Detachment. The interpretation is based on the surface geology and the extent and geometry of the structures in the subsurface is only based on speculation. The basal detachment inside HHC is based on findings from the other sections (Mukherjee, 2012 and references therein).]()
![S-C fabrics in HHC. (a) The sigmoidal S-surfaces are deflected near the C-surfaces in the garnet –kyanite schist near Hirgo. The angle between S and C is ~21°. The sense of shear is top-to-ESE. (b) Intensely sheared mylonitic granite near Pene. The late extensional C′ -plane also further deflects the S –surfaces. (c) The C -plane deflecting S-surface in quartz-biotite schist near Menchuka (d) The sub-horizontal C-planes making acute angle with S-surfaces near Yapik village. The sense of shear is top-to-ESE. (Locations: Hirgo: 28°30'53.3"N: 94°26'99.8"E; Yapik: 28°30'69.3"N: 94°28'54.2" E; Menchuka: 28°36'036" N: 94°07'853" E)]()
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1-20 OF 58 RESULTS FOR
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Journal Article
Thrust Shear Sense and Shear Zone Fabrics in the Higher Himalaya, Siyom Valley, Eastern Arunachal Himalaya, India Available to Purchase
Publisher: Geological Society of India
Published: 01 November 2020
Jour. Geol. Soc. India (2020) 96 (5): 447–457.
...Tapos Kumar Goswami; Sukumar Baruah; Bashab Nandan Mahanta; Pranjit Kalita; Polash Bora 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...
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Litho-structural map of the study area (prepared by the authors). Orientati... Available to Purchase
in Thrust Shear Sense and Shear Zone Fabrics in the Higher Himalaya, Siyom Valley, Eastern Arunachal Himalaya, India
> Journal of the Geological Society of India
Published: 01 November 2020
in the legend. The MCT at Pene and the Bille-Kaying Fault are marked. (a) F1 hinge line in LHS. (b) F2 hinge line in LHS. (c) Pole plots of S1 in LHS. (d) Pole plots of S2 in LHS. (e) Pole plots of S1 in HHC. (f) Pole plots of S2 in HHC. (g) F1 hinge line in HHC. (h) F2 hinge line in HHC. (i
Image
The field relationship along HHC in Siyom Valley showing the folded metamor... Available to Purchase
in Thrust Shear Sense and Shear Zone Fabrics in the Higher Himalaya, Siyom Valley, Eastern Arunachal Himalaya, India
> Journal of the Geological Society of India
Published: 01 November 2020
by ESE directed simple shear. The isograds are flattened to the MCT ductile shear zone as shown in the figure. Below the ductile zone, the MCT brittle fault has a thrusted contact with the LHS at Pene. In the upper part, the right way –up isograd below STD is shown. b. The structural interpretation
Journal Article
Testimony of Intraformational Limestone Breccias on Lokapur-Simikeri Disconformity, Kaladgi Basin Available to Purchase
Publisher: Geological Society of India
Published: 01 January 1998
Jour. Geol. Soc. India (1998) 51 (1): 43–48.
... tectonics and not as a result of a second transgression of the contemporary sea. Copyright © 1998 Geological Society of India 1998 Geological Society of India Sedimentology Kaladgi Basin Disconformity Meso- Neoproterozoic Basin Evolution Karnataka JOURNAL GEOLOGICAL SOCIETY OF INDIA Vot5l...
Journal Article
On Some Aspects of the Stratigraphy, Depositional Environment and its Bearing on Uranium Mineralisation in Parts of the Singhbhum Shear Zone, Bihar Available to Purchase
Publisher: Geological Society of India
Published: 01 May 1994
Jour. Geol. Soc. India (1994) 43 (5): 557–571.
.... Copyright © 1994 Geological Society of India 1994 Geological Society of India Uranium Economic Geology Stratigraphy Sedimentation Singhbhum Shear Zone Bihar JOURNAL GEOLOGICAL SOCIEfY OF INDIA Vol. 43, May., 1994, pp. 557-571 On some Aspects of the Stratigraphy, Depositional. Environment...
Journal Article
Deformed Cross-Bedding from the Hindoli Group of Rajasthan Available to Purchase
Publisher: Geological Society of India
Published: 01 February 1996
Jour. Geol. Soc. India (1996) 47 (2): 175–178.
... Geological Society of India 1996 Geological Society of India JOURNAL GEOLOGICAL SOCIETY OF INDIA Vo1.47, Feb. 1996, pp. 175-I78 Deformed Cross-Bedding from the Hindoli Group of Rajasthan SURENDRSAINGH Geological Survey of India, 15-16, Jhalana Dungri, Jaipur - 302 004 Ahstract : Deformed cross-bedding...
Image
S-C fabrics in HHC. (a) The sigmoidal S-surfaces are deflected near the C... Available to Purchase
in Thrust Shear Sense and Shear Zone Fabrics in the Higher Himalaya, Siyom Valley, Eastern Arunachal Himalaya, India
> Journal of the Geological Society of India
Published: 01 November 2020
Fig.5. S-C fabrics in HHC. (a) The sigmoidal S-surfaces are deflected near the C-surfaces in the garnet –kyanite schist near Hirgo. The angle between S and C is ~21°. The sense of shear is top-to-ESE. (b) Intensely sheared mylonitic granite near Pene. The late extensional C′ -plane also
Journal Article
A Study on the Time Relations Between Movements, Metamorphism and Granite Emplacement in the Middle Proterozoic Delhi Supergroup Rocks of Rajasthan Available to Purchase
Publisher: Geological Society of India
Published: 01 October 1985
Jour. Geol. Soc. India (1985) 26 (10): 726–733.
..., and the granites emplaced coevally with this event indicated ca . 1450 Ma Rb/Sr isochron age. No definite relationship could be established for the 850-700 Ma secondary (mineral) ages with DF3 deformation and M2 metamorphism. JOURNAL GEOLOGICAL SOCIETY OF INDIA Vol. 26, Oct. 1985, Pp. 726 to 733 A study...
Journal Article
Quaternary Lacustrine Deposit of Kalidhang, District Sirmur, Himachal Pradesh Available to Purchase
Publisher: Geological Society of India
Published: 01 January 1982
Jour. Geol. Soc. India (1982) 23 (1): 39–45.
... couplets indicates that sedimentation continued for about 150 years. JOURNAL GEOLOGICAL SOCIETY Or INDIA Vol. 23. Jan. 1982. pp. 39 to 4S QUATERNARY LACUSTRINE DEPOSIT OF KALlDHANG, DISTRICT SIRMUR, HIMACHAL PRADESH P. K. SWAIN House No. 2321, Sector 22-C, Chandigarh 160017 Abstract The Kalidhang clays...
Journal Article
Occurrence of Tephra / Volcanic Tuff in the Tertiary Sediments of Himachal Himalaya from Tileli Area, Mandi District, H.P.: Implication for Stratigraphy and Uranium Mineralization Available to Purchase
Publisher: Geological Society of India
Published: 01 January 2014
Jour. Geol. Soc. India (2014) 83 (1): 5–12.
... et al., 1995 ). Email: [email protected] 22 02 2013 20 05 2013 01 01 2014 Copyright © 2014 Geological Society of India 2014 Geological Society of India Tephra Uranium mineralisation Dharamsala Himachal Pradesh The lithological unit lying below...
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Journal Article
Hill Slope Stability Analysis using Two and Three Dimensions Analysis: A Comparative Study Available to Purchase
Publisher: Geological Society of India
Published: 01 March 2017
Jour. Geol. Soc. India (2017) 89 (3): 295–302.
... Copyright © 2017 Geological Society of India 2017 Geological Society of India τ f is the shear stress along the sliding surface which can be calculated by the eqn. 5 . The stability of hilly terrains of India are subjected to risk due to its geodynamic and furry nature, unprecedented...
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Journal Article
Fluid Evolution in the Closepet Granite: A Magmatic Source for CO 2 in Charnockite Formation at Kabbaldurga ? Available to Purchase
Publisher: Geological Society of India
Published: 01 July 1991
Jour. Geol. Soc. India (1991) 38 (1): 55–65.
... for dehydration with the Closepet magma. Copyright © 1991 Geological Society of India 1991 Geological Society of India Closepet Granite Fluid Inclusions Immiscibility Charnockite Dehydration JOURNAL GEOLOGICAL SOCIETY OF INDIA Vol. 38, July 1991, pp. 55 to 65 Fluid Evolution in the Closepet...
Journal Article
Small-Scale Structures in Tuffs Associated with Iron-Ore Volcanics of Barsua Valley, Sundargarh District, Orissa, India Available to Purchase
Publisher: Geological Society of India
Published: 01 April 1989
Jour. Geol. Soc. India (1989) 33 (4): 309–320.
...B. K. Mohapatra; A. K. Paul; R. K. Sahoo Abstract The paper records small-scale primary and secondary structures in different tuffaceous rocks of Barsua Valley, Sundargarh district, Orissa, India. The tuffs of acid, basic and intermediate composition are structurally both isotropic and anisotropic...
Journal Article
Dugwell Inflows from Shallow Deccan Basalt Aquifers Available to Purchase
Publisher: Geological Society of India
Published: 01 June 1997
Jour. Geol. Soc. India (1997) 49 (6): 705–714.
.... Copyright © 1997 Geological Society of India 1997 Geological Society of India Deccan Basalt Aquifers Hydraulic Conductivity Groundwater JOURNAL GEOLOGICAL SOCIETY OF INDIA Vo1.49, June 1997, pp. 705-714 DugweU Inflows from Shallow Deccan Basalt Aquifers HIMANSHU KULKARNI AND S.B. DEOLANKAR...
Journal Article
Time-Space Relationship in the Metallogenetic Domains of Rajasthan Available to Purchase
Publisher: Geological Society of India
Published: 01 September 1976
Jour. Geol. Soc. India (1976) 17 (3): 359–369.
... related to post-Delhi acid intrusives has influenced the copper mineralisation in the miogeosyncline. Both the domains have borne the stresses of repeated orogeny, which have reoriented ore localisation. .:JOURNAL Of THE GEOLOGICAL SOCII!TY OF INDIA ver, 17, No.3, 1976, pp. 359 to 369 TIME-SPACE...
Journal Article
Sediment Yield Assessment, Prioritization and Control Practices in Chambal River Basin Employing SYI Model Available to Purchase
Publisher: Geological Society of India
Published: 01 November 2022
Jour. Geol. Soc. India (2022) 98 (11): 1585–1594.
... . In: E.M. Bridges , I.D. Hannam , L.R. Oldeman , F.W.T. Pening de Vries , S.J. Scherr and S. Sompatpanit (Eds.), Responses to Land Degradation. Proc. 2nd. Internat. Conf. on Land Degradation and Desertification, Khon Kaen, Thailand . New Delhi, India . Oxford Press , pp...
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Journal Article
Uranium Mineralization in Singhbhum Shear Zone, Bihar: IV Origin and Geological Time Frame Available to Purchase
Publisher: Geological Society of India
Published: 01 December 1983
Jour. Geol. Soc. India (1983) 24 (12): 615–627.
...) the sooty pitchblende, secondary uranium minerals and supergene uraniferous iron oxides are due to subsequent local remobilization and deposition. Thus, uranium mineralization in the Singhbhum Shear Zone is the result of a series of overalapping geological processes. JOURNAL GEOLOGICAL SOCIETY OF INDIA Vol...
Journal Article
Uranium Mineralization in the Siwaliks of Northwestern Himalaya, India Available to Purchase
Publisher: Geological Society of India
Published: 01 March 1993
Jour. Geol. Soc. India (1993) 41 (3): 243–258.
... of the uraniferous zones. JOURNALGEOLOGICASLOCIETYOF INDIA Vol. 41, March 1993, pp. 243 to 258 Uranium Mineralization in the Siwaliks of Northwestern Himalaya, India RAVI KAUL, K. UMAMAEIESWAR, S. CHANDRASEKARAN, R. D. DESHMUKH AND B. M. SWARNKAR* Atomic Minerals Division, Department of Atomic Energy, A M D Complex...
Journal Article
Lithostratigraphy of the Precambrian Rocks around Koira, Sundargarh District, Orissa Available to Purchase
Publisher: Geological Society of India
Published: 01 March 1975
Jour. Geol. Soc. India (1975) 16 (1): 55–68.
... Group, is subdivided, on lithological grounds, into five formations. Copyright © 1975 Geological Society of India 1975 Geological Society of India JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA Vol. 16, No. I, 1975, pp. 55 to 68 LITHOSTRATIGRAPHY OF THE PRECAMBRIAN ROCKS AROUND KOIRA, SUNDARGARH...
Journal Article
Petrological and geochemical characteristics of Mesoproterozoic dyke swarms in the Gardar Province, South Greenland: Evidence for a major sub-continental lithospheric mantle component in the generation of the magmas Available to Purchase
Journal: Mineralogical Magazine
Published: 01 August 2015
Mineralogical Magazine (2015) 79 (4): 909–939.
... to bulk silicate earth as well as relatively flat heavy rare-earth element ( HREE ) patterns ((Gd/Yb) N = 1.4–1.9) indicating melt generation above the garnet stability field. The dyke rocks investigated show strong geochemical and geochronological similarities to pene-contemporaneous mafic dyke swarms...
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