Heavy Mineral Composition and Sources of Himalayan Neogene Sediments Occurring along the Garu-Likabali Road Section, West Siang District, Arunachal Pradesh, India

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Roshmi Boruah
Jayanta Jivan Laskar


The Neogene sedimentary sequence of the Arunachal Himalayas is represented by the Dafla, Subansiri and Kimin Formations. Their systematic heavy mineral analysis along the Garu-Likabali Road section indicates that the heavy mineral assemblage is composed of fifteen heavy mineral varieties comprising of andalusite, biotite, chloritoid, chlorite, epidote, garnet, hornblende, hypersthene, kyanite, muscovite, rutile, sphene, staurolite, tourmaline and zircon, besides opaque minerals. The assemblage points towards a complex sediment provenance for the Neogene sedimentary sequences with sediment inputs from pre-existing igneous, metamorphic and sedimentary rocks. The boundary between the Dafla and Subansiri Formation in the region can be demarcated on the basis of disappearance of Hypersthene in the heavy mineral suite of the older Dafla Formation as well as appearance and persistence of staurolite in the same Formation.

Heavy mineral analysis, neogene sediments, Arunachal Himalaya.

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Boruah, R., & Jivan Laskar, J. (2020). Heavy Mineral Composition and Sources of Himalayan Neogene Sediments Occurring along the Garu-Likabali Road Section, West Siang District, Arunachal Pradesh, India. Journal of Geography, Environment and Earth Science International, 24(1), 26-33. https://doi.org/10.9734/jgeesi/2020/v24i130191
Original Research Article


Chirouze F, Dupont-Nivet G, Huyghe P, Van der Beek P, Chakraborti T, Bernet M, Erens V. Magnetostratigraphy of the Neogene Siwalik Group in the far Eastern Himalaya: Kameng section, Arunachal Pradesh, India. Journal of Asian Earth Sciences. 2012;117-135.

DeCelles PG, Gehrels GE, Quade J, Ojha TP, Kapp PA, Upreti BN. Neogene foreland basin deposits, erosional unroofing, and the kinematic history of the Himalayan fold-thrust belt, Western Nepal. Geological Society of American Bulletin. 1998;2-21.

Ojha TP, Butler RF, DeCelles PG, Quade J. Magnetic polarity stratigraphy of the Neogene foreland basin deposits of Nepal. Basin Research. 2009;61-90.

Acharyya SK, Ghosh RN, Ghosh SC. Geological framework of the Eastern Himalayas in parts of Kameng, Subansiri, Siang District, Arunachal Pradesh. Proceedings of the Symposium on Geology and Mineral Resources of North Eastern Himalayas, Geol. Surv. of India Misc. Publ. No. 43. 1983;145-152.

Geological Survey of India, Key Papers presented in group discussion on Tertiary stratigraphy of North Eastern India held at Shillong, April 1985, Geol. Surv. of India Spl. Publ. No. 23. 1989;43.

Geological Survey of India, Geology and Mineral Resources of Arunachal Pradesh. Geol. Surv. India Misc. Publ. No. 30(IV); 2010.

Nandy, DR. The Eastern Himalayas and the Indo-Burman Orogen in relation to the Indian Plate movement. Proceedings of the Symposium on Geology and Mineral Resources of North Eastern Himalayas. Geol. Surv. of India Misc. Publ. No. 43. 1983;153- 159.

Mahanta BN, Sekhose K, Nandhagopal N, Sarkar RL, Singh PK. Siwalik Group of the North-Eastern Himalaya. National workshop on Indian Siwalik: Recent Advances and Future Research. 2017;206-221.

Karunakaran C, Ranga Rao A. Status of exploration for Hydrocarbons in the Himalayan Region-contributions to stratigraphy and structure. Sec.III; Oil and Natural Gas Resources, Himalayan Geol. Seminar; New Delhi. 1976;1-71.

Mathur LP, Evans P. Oil in India. International Geological Congress. 1964; 22nd session.

Das Gupta S, Mukhopadhaya M, Nandy DR. Active tectonic features in the central part of the Himalaya. Tectonophysics. 1987;255–264.

Nandy DR, Das Gupta S. Seismotectonics domains of NE India and adjoining areas. Phy. And Chem. of the Earth. 1991;371-384.

Valdiya KS. Himalayan transverse faults and folds and their parallelism with sub-surface structures of North Indian Plains. Tectonophysics. 1976;32:353-386.

Wadia DN. Geology of India. 3rd ed. Mac Millan and Co Ltd, London; 1953.

Dutta SK, Singh HP. Palynology of the Siwalik rocks of the Lesser Himalayas, Kameng district. Proceedings of 4th Palynological Conference of India; 1976.

Lindholm RC. A Practical Approach to Sedimentology. Allen and Unwin: London; 1987.

Morton AC, Hallsworth CR. Processes controlling the composition of Detrital Heavy Mineral Assemblages in Sandstones. Sedimentary Geology. 1999; 124:3–29.

Carver RE. Heavy mineral separation. Procedures in Sedimentary Petrology. New York: Wiley- Interscience; 1971.

Mange MA, Wright DT. Heavy minerals in use, Developments in Sedimentology;58, Elsevier; 2007.

Milner HB. An Introduction to Sedimentary Petrography with special reference to loose detrital deposits. 4th ed. London: George Allen and Unwin; 1962.

Evans P, Hayman RJ, Majeed MA. The Graphical Representation of Heavy Mineral Analyses. World Petroleum Congress. 1933;251-256.

Deer WA, Howie RA, Zussman J. An Introduction to the Rock forming minerals, Longman Group Limited, Hongkong; 1985.

Hubert JF. A zircon-tourmaline-rutile maturity index and the interdependence of the composition of heavy mineral assemblages with the gross composition and texture of sandstones; 1962.

Prothero DR, Schwab F. Sedimentary Geology; 1996.