Abstract
Bomdila Gneiss (BG) of Western Arunachal Himalaya (WAH), a suite of felsic magmatic rocks of different components of Palaeoproterozoic age is hosted within the Lesser Himalayan Sedimentary Sequence (LHSS) and placed between the two notable thrust systems- MCT at the top of the structural level to the north and MBT at the lower structural level to the south. Both MCT and MBT are highly sheared ductile zone of high strain and the felsic batholith around Bomdila signatures the protolithic history as porphyritic granite. The BG is highly sheared, strained and displays a number of shear sense indicators like σ, δ, mica fish, stretch ribbon, S-C fabric, dislocation fabric and effect of mylonitisation. Stratigraphic status, magnetic susceptibility and whole rock geochemistry of BG have been studied to evaluate the tectonostratigraphy and nature of granite as ilmanite series (reduced type) and the related data sets are correlated as supplements with the redox state (moderately reduced type).
Similar content being viewed by others
References
Acharya, S.K., Ghosh, S.C., Ghosh, R.N. and Shah, S.C. (1975) The continental Gondwana Group and associated marine sequences of Arunachal Pradesh (NEFA), Eastern Himalayas. Himalayan Geol., v.5, pp.60–82.
Bakliwal, P.C. and Das, A.K. (1971) Geology of parts of Kameng district, NEFA. Geol. Surv. India Unpubld. Progress Report for FS-1970-71.
Bhalla, J.K. and Bishui, P.K. (1989) Geochronology and geochemistry of granite emplacement and metamorphism in northeastern Himalaya. Rec. Geol. Surv. India, v.122, pp.18–20.
Bhattacharjee, S. and Nandy, S. (2008) Geology of the Western Arunachal Himalaya in parts of Tawang and West Kameng districts, Arunachal Pradesh. Jour. Geol. Soc. India, v.72, pp.199–207.
Bhusan, S.K. (1999) Reappraisal of the geology between the MBF and the MCT in western Arunachal Pradesh. In: P.K. Verma (Ed.), Geological Studies in the Eastern Himalayas. Pilgrim books Pvt. Ltd., Delhi, pp.161–176.
Bhusan, S.K., Passayat, R.N. and Agarwal, R.K. (1991) Preliminary investigation for base metal mineralisation near Shergaon, West Kameng district, Arunachal Pradesh. Rec. Geol. Surv. India, v.124 (4), pp.115–127.
Bhusan, S.K., Banerjee, D.C., Bindal, C.M., Sharma, S., Agarwal, R.K., Passayat, R.N. and Srivastava, J.K. (1989) Preliminary report on section measurement in parts of West Kameng and Lower Subansiri districts, Arunachal Pradesh. Geol. Surv. India Unpubld. Report.
Bonin, B. (1982) Les granites des complexes annulaires. Manuels et Méthodes, v.4, B.R.G.M., France.
Brun, J.P. and Pons, J. (1981) Strain patterns of pluton-emplacement in crust undergoing noncoaxial deformation, Sierra Morena, SouthernSpain. Jour. Struct. Geol., v.3, pp. 219–229.
Das, D.P., Bakliwal, P.C. and Dhoundial, D.P. (1975) A brief outline of geology of parts of Kameng district, NEFA. Geol. Surv. India Misc. Publ., v.24(1), pp.115–127.
Dhoundial, D.P., Kumar, G., Singh, S. and Reddy, K.V.S. (1989). Geology of Arunachal Himalaya. Geol. Surv. India Unpubld. Report.
Goswami, S., Bhowmik, S.K. and Dasgupta, S. (2009) Petrology of a non-classical Barrovian inverted metamorphic sequence from the western Arunachal Himalaya, India. Jour. Asian Earth Sci., v.36, pp.390–406.
Hutton, D.H.W. (1988) Granite emplacement mechanisms and tectonic controls: inferences from deformation studies. Trans. Royal Soc. Edinburgh, Earth Sci., v.79, pp.245–255.
Ishihara, S. (1971) Model and chemical composition of the granitic rocks related to the major molybdenum and tungsten deposits in the Inner zone of southwest Japan. Jour. Geol. Soc. Japan, v.77, pp. 441–452.
Ishihara, S. (1977) The magnetite -series and ilmenite series granitic rocks. Mining Geol., v.27, pp.293–305.
Ishihara, S. Anhaeusser, C.R. and Laurence, J.R. (2001) Granitoid- series evaluation of the archean Johannesburg dome granitoids, South Africa. Econ. Geol. Research Institute. Information Circular — No. 357. Nov. 2001, pp.1–10.
Jain, A.K., Singh, S. and Manickavasagam, R.M. (2002) Himalayan collision tectonics. Gondwana Res. Group Mem., v.7, 114p.
Kumar, G. (1997) Geology of Arunachal Pradesh. Geol. Soc. India, Bangalore, 217p.
Kanaya, H. and Ishihara, S. (1973) Regional variation of magnetic susceptibility of granitic rocks in Japan. Jour. Japan Assoc., Mineral. Petrol. Econ. Geol., v.68.pp.219–224 (In Japanease with English abstract)
Kumar, S. and Pathak, M. (2009) Magnetic susceptibility and geochemistry of felsic igneous rocks from western Himalaya; Implications of granitic series evaluation in orogenic belt. Magmatism,tectonism and mineralization; edited by Santosh Kumar.Macmillan publisher India Ltd. pp.74–91.
Kumar, S. (2008) Magnetic Susceptibility Mapping of Ladakh Granitoids, northwest higher Himalaya: Implication to redox series of felsic magmatism in the subduction environments. Mem. Geol.. Soc. India (B.R. Arora and R. Sharma, Eds.) No.72, pp.83–102.
Mazumdar N., Bhattacharjee S., Nandy, S. and Sarma, K.P. (2014) Structural analyses of lesser Himalayan sequence and strain calculation of the Shergaon conglomerate of West Kameng district, Arunachal Pradesh, India, Internat. Jour. Earth Sci. Engg, v.7(1), pp.239–250.
Paul, J., Biirgrnann, R., Gaur, V.K., Bilham, R., Larson, K. M., Anandal, M.B., Jade, S., Mukal, M., Anuparna, T.S., Satyal, G. and Kumar, D. (2001) The motion and active deformation of India. Geophys. Res. Lett., v.28, pp.647–650.
Ramesh, D.S., Kumar, M.R., Devi, E.U. and Raju, P.S. (2005) Moho geometry and upper mantle images of NE India. Geophys. Res. Lett., v.32, L 143–1.
Ramsay, J.G. (1967) Folding and fracturing of rocks: New York, McGraw-Hill, 568p.
Sarma, K.P., Bhattacherjee, S, Nandy, S., Konwar, P. and Mazumdar, Nandita (2011) Thrust bound lithounits of Western and Eastern sectors of Arunachal Himalaya, India: An integrated approach of correlation. Mem. Geol. Soc. India, v.77, pp.33–41.
Singh, S. and Sharma, R. (1990) Geology of part of lower Subansiri, East Kameng district, Arunachal Pradesh. Rec. Geol. Surv. India, v.123(4), pp.3–5.
Singh, S. (1988) Geology of Tawang — Woming La and Gashe La area, Tawang district, Arunachal Pradesh. Geol. Surv. India, Unpubld. Progress Report for FS-1987–88.
Singh, R.K.B. (2010) Geochemistry and petrogenesis of granitoids of Lesser Himalayan crystalline, Western Arunachal Himalaya. Jour. Geol. Soc. India, v.75, pp.618–631.
Srivastava, R.K., Srivastava, H.B. and Srivastava, V. (2009) Petrology and Geochemistry of Proterozoic olivine tholeiite intrusives from Central Crystallines of the western Arunachal Himalaya, India: evidence for a depleted mantle. Curr. Sci., v.97(9), pp.1355–1361.
Srivastava, H.B., Srivastava, V., Srivastava, R.K. and Singh, C.K. (2011) Structural analyses of the crystalline rocks between Dirang and Tawang, West Kameng District, Arunachal Himalaya. Jour. Geol. Soc. India, v.78, pp.45–56.
Tripathi, C., Jain, L.S. and Basu Roy, S. (1979) A note on the find sulphide mineralisation in Lumla area, Kameng district, Arunachal Pradesh. Indian Minerals, v.33(2), pp.55.
Takagi, T. and Tsukimera, K. (1997) Genesis of oxidized and reduced type granite. Econ. Geol., v.92, pp.81–86.
Yin, A., Dubey, C.S., Kelty, T.K., Gehrels, G.E., Chow, C.Y., Grove, M. and Lovera, O. (2006) Structural evolution of the Arunachal Himalaya and implications for asymmetric development of the Himalayan orogen. Curr. Sci., v.90, pp.195–206.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Sarma, K.P., Bhattacharjee, S., Nandy, S. et al. Structure, stratigraphy and magnetic susceptibility of Bomdila Gneiss, Western Arunachal Himalaya, India. J Geol Soc India 84, 544–554 (2014). https://doi.org/10.1007/s12594-014-0162-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12594-014-0162-7