A Study Of Primary Sedimentary Structures In Banded Iron Formations (BIFs) Of Nagavi Area, Gadag Schist Belt, Karnataka, India





Nagavi Area, Gadag Schist Belt, Sedimentary Structures, Banded Iron Formations.


Primary sedimentary structures play a vital role in mineralisation. The banded iron formations (BIF’s) are unique rock formations in geological history. The banded iron formations of Gadag schist belt, Karnataka, India, exhibit primary sedimentary structures like meso and micro folds, ripple marks, cross lamination, parting lineation and graded bedding. BIF of Nagavi area is one of the most typical Precambrian formations of the Gadag schist belt (GSB). BIF’s outcrops were delineated during field visit. Most of the outcrops were located on top of the hill and Meta-basalts on either side of the hill and trending NW-SE direction. The BIFs of Nagavi study area exhibit prominent primary sedimentary structures and a few preconsolidation deformation structural features, like folds, faults and brecciation between bands were also observed. The sedimentary structures along with petrographic observations it indicates that the BIFs associated with quartz vein in the form of silica iron oxide.


S.C. Puranik, (2011): “Primary Sedimentary Structures in Banded Iron Formations from Gadag Schist Belt, Karnataka, India”, International Journal of Earth Science and Engineering ISSN 0974, Vol. 04, No. 02 – March 2011, pp. 111-121.

Chakrabarthi et al, (1993): “Reported a few primary sedimentary structures in the meta-sediments of the area”.

Naqvi SM, Rogers JJW, (1987): “Precambrian geology of India” Oxford monographs on geology and geophysics No.6. Oxford University Press, New York, p 223.

Naqvi, S.M, (1997): Comment on “The Sandur Schist Belt and its adjacent plutonic rocks: Implications of Late Archean Crustal Evolution in Karnataka”. Jour.Geol. Soc. India, Vol. 49, No.4, pp.459-460.

Rajamani V, Shivakumar K, Shirey SB and Hanson GN. (1985): “Geochemistry and petrogenesis of amphibolites from the Kolar Schist Belt, South India: evidence for ultramafic magma generation by low per cent melting”. J Petrol 26:92–123.

Naqvi SM, Rana Prathap JG, (2007): Geochemistry of adakites from Neoarchean active continental margin of Shimoga schist belt, Western Dharwar Craton, India: implications for the genesis of TTG. Precambrian Res 156:32–54.

Sawkar, R.H., (2010): Gold mining, “A development authority in Karnataka, Journal of Geological society of India”, Vol. 76, pp. 208-214.

Beeraiah M. B.; Sengupta S. (2001): Venkateswamy; Ramachandran T. V “Exploration for gold in sulphidic banded magnetite chert of Nagavi-Mallasamudra area, Gadag schist belt”. Special Publication Series Geological Survey of India 58, Pages 339-343.

Ramachandran TV, Beeraiah MB, Sengupta S, (2001): “Exploration for Auriferous ore zones in Gadag schist belt, Karnataka—some aspects of mineral development in India”. Geol Soc. India and Geology Dept. Andhra University, Visakhapatnam, pp. 53–66.

Ramadass G, Ramaprasada Rao I B, Himabindu D and Srinivasulu N (2002): “Pseudo-surface velocities (densities) and pseudo-depth densities (velocities) along selected parts in the Dharwar Craton, India”; Current Science 82 (2) 197-202.

Gross, G. A. (1972): Primary features will cherty iron formation, Sediment. Geol. Vol. 7, pp.291-261.

Narayanaswamy, S. and Ahmed, M, (1963): Geology of the Gadag Gold Field, Dharwar district, Mysore State. Geol. Soc.I ndia, Mem.1 pp.107-116.

Chadwick B, Vasudev VN, Hegde GV (2003): “The Chitradurga Schist Belt and its adjacent Plutonic Rocks, NW of Tungabhadra, Karnataka: a duplex in the Late Archaean convergent setting of the Dharwar Craton”. J Geol Soc. India 61:645–663.

Ugarkar AG, Panaskar DB, Ranganath Gowda G, (2000): Geochemistry, petrogenesis and tectonic setting of metavolcanics and their implications for gold mineralisation in Gadag Gold Field, Southern India.Gondwana Res 3:371–384.

Ugarkar A G and Devaraju T C, (1994): “Ore mineralogy of western auriferous zone of Gadag, greenstone belt,Karnataka”; J. Geol. Soc. India 43, 549-555.

Kaila K L, Roy Chowdhury K, Reddy P R, Krishna V G, Hari Narain, Subbotin S I, Sollogub V B, Chekunov A V, Kharetchko G E, Lazarenko M A and Ilchenko T V (1979): “Crustal structure along the Kavali Udipi profile in the Indian peninsular shield fromdeep seismic sounding” J. Geol. Soc. India, 20 PP307-333.




How to Cite

Agasnalli, C., Chandrappa, K. D., & Lakkundi, T. K. (2022). A Study Of Primary Sedimentary Structures In Banded Iron Formations (BIFs) Of Nagavi Area, Gadag Schist Belt, Karnataka, India. Journal of Mines, Metals and Fuels, 69(11), 411–416. https://doi.org/10.18311/jmmf/2021/29413