Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

Glauconites from the Late Palaeocene - Early Eocene Naredi Formation, Western Kutch and their Genetic Implications


Affiliations
1 Department of Earth Sciences, Indian Institute of Technology Bombay, Powai, Mumbai - 400 076, India
     

   Subscribe/Renew Journal


Glauconitic minerals are considered as one of the valuable input parameters in sequence stratigraphic analysis of a basin. In the present study glauconitic minerals are reported from subtidal green shale facies in the lower part of the Late Paleocene-Early Eocene Naredi Formation of western Kutch. On the basis of the foraminiferal assemblage the glauconite bearing beds are interpreted to have formed in a mid shelf depositional settings of an unstable marine conditions. XRD studies confirm the glauconite mineralogy of the green pellets and provide an estimation of glauconite maturity. Textural attributes of the glauconites confirm their derivation by different degrees of alteration of precursor feldspar grains. Because of the authigenic origin and autochthonous nature, these glauconites hold promise for understanding sequence stratigraphy of the Palaeogene succession of the western Kutch.

Keywords

Glauconite, Subtidal, Pellets, Feldspar, Authigenic, Palaeogene, Western Kutch.
Subscription Login to verify subscription
User
Notifications
Font Size

  • AMOROSI, A. (1994) The glaucony-bearing horizon in the lower Miocene Bisciario Formation (Umbria-Marche Apennines). G. Geol., Bologona. v.56/1, pp.7-16.

  • AMOROSI, A. (1995) Glaucony and sequence Stratigraphy: A conceptual framework of distribution in siliciclastic sequences. Jour. Sediment. Res., v.B65, pp.419-425.

  • AMOROSI, A. (1997) Detecting compositional, spatial, and temporal attributes of glaucony: a tool for provenance research. Sediment. Geol., v.109, pp135-153.

  • AMOROSI, A. and CENTINEO, M.C. (1996) Glucony from the Eocene of the Isle of Wright (southern UK): Implications for basin analysis and sequence stratigraphic interpretation. Jour. Geol. Soc. London, pp.878-896.

  • BANDOPADHYAY, P.C. (2007) Interpretation of authigenic vs. allogenic green peloids of ferric clay in the Proterozoic Penganga Group, southern India. Clay Miner., v.42, pp.471-485.

  • BANERJEE, S., JEEVAN KUMAR, S. and ERIKSSON, P.G. (2008) Mg-rich illite in marine transgressive and highstand system tracts: Examples from the Palaeoproterozoic Semri Group, central India. Precambrian Res., v.162, pp.212-226.

  • BISWAS, S.K. (1987) Regional tectonic framework, structure and evolution of the western margin basins in India. Tectonophysics, v.135, pp.307-327.

  • BISWAS, S.K. (1992) Tertiary Stratigraphy of Kutch. Jour. Pal. Soc. India, v.37, pp.1-29.

  • BURST, J.F. (1958a) Their mineral nature and applications to stratigraphic interpretations. Amer. Assoc. Petrol. Geol. Bull., v.42, pp.310-327.

  • BURST, J.F. (1958b) Mineral Heterogeneity in "Glauconite" pellets. Am. Mineral., Bull., v.43, pp.481-497.

  • CHATTORAJ, S.L., BANREJEE, S. and SARASWATI, P.K. (2008) Sedimentation, Palageography and Sequence Startigraphic Framework of the Late Palaeocene to Early Eocene Naredi Formation, Western Kutch, Gujarat. Int. Assoc. Gondwana Res. Conf. series 5, p.116.

  • DASGUPTA, S., CHAUDHURI, A.K. and FUKUOKA, M. (1990) Compositional characteristics of glauconitic alterations of K-feldspar from India and their implications. Jour. Sediment. Petrol., v.60, pp.277-281.

  • DEB, S.P. and FUKUOKA, M. (1998) Fe-illites in a Proterozoic deep marine slope deposit in the Penganga Group of the Pranhita Godavari Valley - their origin and environmental significance. Jour. Geol., v.106, pp.741-749.

  • GHOSH, A., SAHA, S., SARASWATI, P.K., BANERJEE, S., BURLEY, S. and GUNDU RAO, T.K. (2007) Gallitellia - a proxy for palaeo monsoonal upwelling on the western coast of India. Geol. Soc. America, Abstracts 39/6, p.584.

  • KITAMURA, A. (1998) Glaucony and carbonate grains as indicators of the condensed section: Omma Formation, Japan. Sediment. Geol., v.122, pp.151-163.

  • KROON, D. and NEDERBRAGT, A. (1990) Ecology and paleoecology of triserial planktic foraminifera. Mar. Micropaleontol., v.16, pp.25-38.

  • KOSSOVSKAYA, A.G. and DRITS, V.A. (1970) The variability of micaceous minerals in sedimentary rocks. Sedimentology, v.15, pp.83-101.

  • LEE, C.H., CHOI, S. and SUH, M. (2002) High iron glaucony from the continental shelf of the Yellow Sea off the southwestern Korean Peninsula. Jour. Asian Earth Sci., v.20, pp.507-515.

  • ODIN, G.S. and MATTER, A. (1981) De glauconiarium origine. Sedimentology, v.28, pp.611-641.

  • PORRENGA, D.H. (1967) Glauconite and chamosite as depth indicators in the marine environment. Mar. Geol., v.5, pp.495-501.

  • RAY, A.K., GHOSH, C.C., SEN, P., GHOSH, A., NAG. S., SAHA, D. and CHOWDHURY, A. (1984) Palaeogene of Kutch - An Alternative View on the Initial Part of the Sequence. Indian Jour. Earth Sci., v.11, pp.207-224.

  • SARASWATI, P.K. and BANERJEE, R.K. (1995) Post-Trappean sedimentation history of the North western Kutch. Proc. 10th Ind. Colloq. Micropal. Strat., pp.377-390.

  • SINGH, I.B. (1978) Microfacies, Petrography and Mineralogy of the Tertiary Rock of Guar Nala near Narayan Sarovar, Kutch, India, and their Palaeoecological Significance. Jour. Pal. Soc. India, v.21-22, pp.78-95.

  • VELDE, B. (1985) Clay minerals. Developments in Sedimentology 40. Amsterdam, Elsevier, pp.427.


Abstract Views: 223

PDF Views: 0




  • Glauconites from the Late Palaeocene - Early Eocene Naredi Formation, Western Kutch and their Genetic Implications

Abstract Views: 223  |  PDF Views: 0

Authors

Shovan Lal Chattoraj
Department of Earth Sciences, Indian Institute of Technology Bombay, Powai, Mumbai - 400 076, India
Santanu Banerjee
Department of Earth Sciences, Indian Institute of Technology Bombay, Powai, Mumbai - 400 076, India
P. K. Saraswati
Department of Earth Sciences, Indian Institute of Technology Bombay, Powai, Mumbai - 400 076, India

Abstract


Glauconitic minerals are considered as one of the valuable input parameters in sequence stratigraphic analysis of a basin. In the present study glauconitic minerals are reported from subtidal green shale facies in the lower part of the Late Paleocene-Early Eocene Naredi Formation of western Kutch. On the basis of the foraminiferal assemblage the glauconite bearing beds are interpreted to have formed in a mid shelf depositional settings of an unstable marine conditions. XRD studies confirm the glauconite mineralogy of the green pellets and provide an estimation of glauconite maturity. Textural attributes of the glauconites confirm their derivation by different degrees of alteration of precursor feldspar grains. Because of the authigenic origin and autochthonous nature, these glauconites hold promise for understanding sequence stratigraphy of the Palaeogene succession of the western Kutch.

Keywords


Glauconite, Subtidal, Pellets, Feldspar, Authigenic, Palaeogene, Western Kutch.

References