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Chattoraj, Shovan Lal
- Glauconites from the Late Palaeocene - Early Eocene Naredi Formation, Western Kutch and their Genetic Implications
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1 Department of Earth Sciences, Indian Institute of Technology Bombay, Powai, Mumbai - 400 076, IN
1 Department of Earth Sciences, Indian Institute of Technology Bombay, Powai, Mumbai - 400 076, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 73, No 4 (2009), Pagination: 567-574Abstract
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.
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